Provided in the present application are a waste positive electrode material full-chain integrated repair and regeneration method and an application thereof. The method comprises the following steps: (1) mixing waste positive electrode material with a sodium source, and performing calcination treatment to obtain sodium-doped waste positive electrode material; (2) taking the sodium-doped waste positive electrode material as an adsorbent for performing carbon dioxide adsorption treatment to obtain adsorbed positive electrode material; and (3) mixing the adsorbed positive electrode material with a carbon-containing lithium source, and performing sintering treatment to obtain repaired and regenerated positive electrode material. The doped sodium ions in the repair and recovery process increase the carbon dioxide adsorption efficiency and also replace lithium, so that the structural stability of the positive electrode material can be effectively improved while lithium defects are repaired, reducing the capacity loss of the electrode material during charging and discharging; the valence of nickel ions can also be stabilised, lithium-nickel mixing can be reduced, and to a certain extent phase changes during charging and discharging can be inhibited, thereby improving structural stability and electrochemical performance.
H01M 10/54 - Récupération des parties utiles des accumulateurs usagés
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p. ex. batteries à insertion ou intercalation de lithium dans les deux électrodesBatteries à l'ion lithium
2.
NICKEL-MANGANESE-COPPER-IRON CARBONATE PRECURSOR, PREPARATION METHOD, AND USE IN PREPARATION OF SODIUM-ION BATTERY POSITIVE ELECTRODE MATERIAL
Disclosed in the present disclosure are a nickel-manganese-copper-iron carbonate precursor, a preparation method, and the use in the preparation of a sodium-ion battery positive electrode material. Four metal ions of Ni2+, Mn2+, Fe2+and Cu2+ can be complexed, and the metal ions are slowly released under the action of a precipitator, thereby co-precipitating the four metal ions, such that the prepared precursor is uniform in terms of morphology and segregation does not occur. Impurities such as sodium and sulfur in the precipitated product can be reduced by means of performing a post-treatment on the product, and the content of copper in the precursor can also be increased.
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p. ex. LiNiO2, LiCoO2 ou LiCoOxFy
H01M 4/50 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de manganèse
3.
SALT LAKE LITHIUM EXTRACTION ELECTRODIALYSIS APPARATUS
Disclosed is a salt lake lithium extraction electrodialysis apparatus, which relates to the technical field of lithium salt production. Said apparatus comprises a containing assembly, an electrodialysis assembly, and a stirring assembly; the containing assembly comprises a barrel, a top cover, and a feed pipe; the top of the barrel is rotatably connected to the top cover, the barrel is in communication with one end of the feed pipe, and an inner slot is formed on an inner wall of the barrel; a communication pipe is arranged on the top cover; the electrodialysis assembly comprises a first anode cylinder, a first ion exchange membrane, a first cathode cylinder, a second ion exchange membrane, and a second anode cylinder; the top of the first anode cylinder is fixedly connected to the top cover, and a gap is present between the bottom of the first anode cylinder and the bottom wall of the barrel body. The present apparatus facilitates lithium chloride, sodium, and potassium cations in passing through the first ion exchange membrane and entering into a space between between the first ion exchange membrane and the first cathode cylinder, and after a round of purification, a concentrated solution is formed; also, the present apparatus can stir and mix a raw material liquid, which accelerates the movement of cations in the raw material liquid and is beneficial for improving extraction efficiency.
C25C 1/02 - Production, récupération ou affinage électrolytique des métaux par électrolyse de solutions des métaux légers
C02F 1/469 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par des procédés électrochimiques par séparation électrochimique, p. ex. par électro-osmose, électrodialyse, électrophorèse
4.
FILTER DEVICE AND PREPARATION SYSTEM FOR NICKEL-COBALT-MANGANESE PRECURSOR
A filter device (1) for a nickel-cobalt-manganese precursor, comprising: a tank (11), a filter screen (12), an iron remover (13), a filter inlet valve (14) and a filter outlet valve (15), wherein the tank (11) is provided with a feed inlet (111) and a discharge outlet (112), the feed inlet (111) and the discharge outlet (112) respectively being arranged at two ends of the tank (11) in a first direction (X), the filter inlet valve (14) being arranged at the feed inlet (111), and the filter outlet valve (15) being arranged at the discharge outlet (112); the filter screen (12) is detachably arranged inside the tank (11) and, in the first direction (X), divides the interior of the tank (11) into a feed cavity (113) and a discharge cavity (114), the feed cavity (113) being in communication with the feed inlet (111), and the discharge cavity (114) being in communication with the discharge outlet (112); and the iron remover (13) is mounted on the side wall of the tank (11) and located in the feed cavity (113).
22244 is then used for precipitating valuable metals, and therefore the solution can be ensured to have a stable pH, which is maintained within a stable pH range, and the growth speed of nickel-cobalt hydroxide particles is slowed down at the same time, thereby greatly improving the product purity and obtaining a product having a low water content and large particles.
A lithium-ion battery composite positive electrode material, and a preparation method therefor and the use thereof. The lithium-ion battery composite positive electrode material comprises a positive electrode matrix material and a composite polymer coating layer coating the surface of the positive electrode matrix material. The composite polymer coating layer is obtained by means of a cross-linking reaction of an ionic conductive polymer and PEDOT:PSS. The ionic conductive polymer comprises any one or a combination of at least two of PEO, PEG or PEI. By means of cross-linking the ionic conductive polymer and PEDOT:PSS, a uniform and compact composite polymer coating layer is formed, thereby reducing the crystallinity of the ionic conductive polymer, and modifying a sulfonic acid group of PEDOT:PSS, such that the synergistic effect of the ionic conductive polymer and PEDOT:PSS achieves an electron-ion dual-function channel conductive effect. The composite polymer coating layer effectively improves the electron transport rate and reaction kinetics of the positive electrode material.
H01M 4/58 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de composés inorganiques autres que les oxydes ou les hydroxydes, p. ex. sulfures, séléniures, tellurures, halogénures ou LiCoFyEmploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de structures polyanioniques, p. ex. phosphates, silicates ou borates
H01M 4/60 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de composés organiques
H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
7.
HIGH-VOLTAGE PULSE SEPARATION DEVICE FOR POSITIVE ELECTRODE SHEET OF RETIRED LITHIUM-ION BATTERY
Disclosed in the present application is a high-voltage pulse separation device for a positive electrode sheet of a retired lithium-ion battery. The device comprises a tray assembly (1), a cutting mechanism (2) and a high-voltage pulse mechanism (3), wherein the tray assembly (1) is formed by assembling tray bodies (11), the upper surface of the tray assembly (1) serving as a support flat surface, which is configured to support an electrode sheet (100) to be cut; a first fixing plate (12) is further provided on the upper surface of each tray body (11), and the side edge of the electrode sheet (100) is fastened between the first fixing plate (12) and the tray body (11); a cutter (22) is disposed above a cutting operation zone, and the cutter (22) can move to be inserted into a gap between two tray bodies (11), thus cutting the electrode sheet (100) into two electrode sheets (200) to be pulsed; and a pulse operation zone of the high-voltage pulse mechanism (3) is configured for placement of the tray body (11), and two pulse electrodes (34) are respectively connected to two ends of each electrode sheet (200) to be pulsed.
H01M 10/54 - Récupération des parties utiles des accumulateurs usagés
B23D 31/00 - Machines à cisailler ou dispositifs de cisaillage couverts par aucun ou par plusieurs des groupes Combinaisons de machines à cisailler
B23D 15/04 - Machines à cisailler ou dispositifs de cisaillage taillant au moyen de lames se déplaçant parallèlement les unes par rapport aux autres n'ayant qu'une lame mobile
B23D 33/02 - Agencements pour tenir, guider ou faire avancer les pièces pendant le travail
222 nanosheet solution to obtain a mixed solution; and (3) performing solid-liquid separation treatment on the mixed solution, and performing calcination treatment on the obtained solid material to obtain the modified positive electrode material. By means of preparing nanoparticles with strong electronegativity and making the particles of the positive electrode material charged, the nanoparticles with strong electronegativity are uniformly and spontaneously loaded on the charged particles by utilising the acting force between the nanoparticles with strong electronegativity and the electrons, and finally a uniform coating layer is formed on the surface of the positive electrode material by means of calcination.
H01M 4/58 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de composés inorganiques autres que les oxydes ou les hydroxydes, p. ex. sulfures, séléniures, tellurures, halogénures ou LiCoFyEmploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de structures polyanioniques, p. ex. phosphates, silicates ou borates
H01M 4/505 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de manganèse d'oxydes ou d'hydroxydes mixtes contenant du manganèse pour insérer ou intercaler des métaux légers, p. ex. LiMn2O4 ou LiMn2OxFy
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p. ex. LiNiO2, LiCoO2 ou LiCoOxFy
9.
WASTE BATTERY ELECTROLYTE COLLECTION APPARATUS AND USE METHOD THEREOF
Disclosed are a waste battery electrolyte collection apparatus and a use method thereof. The waste battery electrolyte collection apparatus comprises a conveying mechanism (10) and a liquid collection mechanism (20), the liquid collection mechanism (20) comprising a liquid collection tank (21), a liquid collection pipe (22), a cutter (23), a driving assembly (24) and an elastic body (25). A surface of the elastic body (25) facing the conveying mechanism (10) is provided with multiple protrusions (25a) disposed in an annular manner and spaced apart. A through hole (25b) is provided in the middle of the elastic body (25), and the through hole (25b) is used to guide an electrolyte flowing out of a liquid flow port (b) into the liquid collection pipe (22). The apparatus can effectively prevent odor generated by the electrolyte from being emitted into air from the liquid flow port (b).
A battery crushing apparatus, comprising a conveying apparatus (1), a crushing box (2), a shock-absorbing apparatus (3), an air cylinder assembly (4), a crushing cavity (5), a third electric telescopic assembly clamping apparatus (6), a liquid suction apparatus (7), a nitrogen inflation apparatus (8), a crushing apparatus (9), and a dust suction apparatus (10), the liquid suction apparatus (7) being fixed at one end of the crushing box (2), the crushing cavity (5) being arranged in the crushing box (2), the liquid suction apparatus (7) penetrating the crushing cavity (5), and the dust suction apparatus (10) being mounted on the side of the crushing box (2) furthest from the liquid suction apparatus (7); direct breakdown can be implemented, and breakdown is more detailed: after being separated, the liquid and solid can be further broken down; the electrolyte can be recycled, and after being broken down, the solid can be transported out in a unified manner for unified treatment, so that the presence of liquid will not affect transportation; in addition, as the liquid is extracted in advance, environmental pollution can be avoided.
A vehicle-mounted battery crushing apparatus, comprising a rotating mechanism (1), the rotating mechanism being fixedly connected to the inside of a carriage (7) to lift batteries; turnover mechanisms (2), there being multiple turnover mechanisms fixedly surrounding a rotating end of the rotating mechanism to feed in batteries; a battery storage mechanism (3), the battery storage mechanism being fixedly connected to the inside of the turnover mechanism to store batteries; and a crushing mechanism (4), the crushing mechanism being fixedly connected to one side of the rotating mechanism to crush batteries; the rotating mechanism can drive the plurality of turnover mechanisms on the surface of the rotating mechanism to rotate so as to lift batteries to the highest point for feeding in; during the process of the rotating mechanism driving the turnover mechanisms to rotate, the battery storage mechanism keeps an opening in the turnover mechanism facing upward the whole time, so that a worker can conveniently place batteries into the battery storage mechanism through a feed opening formed in the carriage.
233 on the surface of the matrix, such that the occurrence of gas production is further inhibited. In addition, the positive electrode material prepared in the present application can effectively inhibit high-pressure gas production by utilizing the characteristics of strong bond strength of the Al-O bond and strong bond strength of the Mg-O bond, without decreasing voltage, and can also maintain high capacity, and has good development potential.
H01M 4/505 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de manganèse d'oxydes ou d'hydroxydes mixtes contenant du manganèse pour insérer ou intercaler des métaux légers, p. ex. LiMn2O4 ou LiMn2OxFy
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p. ex. LiNiO2, LiCoO2 ou LiCoOxFy
H01M 4/62 - Emploi de substances spécifiées inactives comme ingrédients pour les masses actives, p. ex. liants, charges
A doped modified hard carbon material, a preparation method therefor and a use thereof, relating to the technical field of new energy materials. According to the preparation method, a discharge plasma is used in combination with a ball milling process to sequentially dope oxygen atoms and sulfur atoms into a pre-carbonized raw material, and then calcination is carried out to form a hard carbon material, and a discharge plasma is used in combination with an oscillation vibration process to further carry out carbon coating treatment on a doped material. In this way, a special chemical reagent is not needed to generate waste liquid, and the production energy consumption is low. Due to doping of oxygen atoms and sulfur atoms and coating modification of a carbon layer, the produced product has large spacing of material layers, has a large number of pore sites in the interior for sodium ion storage, has moderate specific surface area, and shows high sodium storage capacity and initial coulombic efficiency when being applied to a sodium ion battery.
A lithium iron phosphate composite material, and a preparation method therefor and the use thereof. The preparation method comprises: mixing a porous inorganic nanofiber aerogel, a lithium source, an iron source, a phosphorus source and a carbon source to obtain a dispersion, carrying out spray drying to obtain a precursor, and then sintering same to obtain a lithium iron phosphate composite material. The porous inorganic nanofiber aerogel is used for in-situ compounding of lithium iron phosphate, and the lithium iron phosphate is synthesized; the presence of the porous nanofiber makes lithium iron phosphate particles be more uniformly distributed and do not agglomerate; and the dual effect of combining the porous nanofiber with the aerogel can effectively shorten the transport path of Li+, thereby effectively improving the rate capacity of an obtained material. In addition, a supporting effect can further be achieved, thereby avoiding damage caused by pressing and other machining processes, and volume change during charging and discharging of the obtained material can be alleviated, thereby avoiding the problem of cracking, etc., and improving the stability of the material.
H01M 4/1397 - Procédés de fabrication d’électrodes à base de composés inorganiques autres que les oxydes ou les hydroxydes, p. ex. sulfures, séléniures, tellurures, halogénures ou LiCoFy
H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
H01M 4/485 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques d'oxydes ou d'hydroxydes mixtes pour insérer ou intercaler des métaux légers, p. ex. LiTi2O4 ou LiTi2OxFy
16.
AUTOMATED APPARATUS AND TREATMENT METHOD FOR TREATING POSITIVE ELECTRODE SHEET BY PULSE DISCHARGING
The present application discloses an automated apparatus and treatment method for treating a positive electrode sheet by pulse discharging. The automated apparatus comprises a box body, a cutting and feeding mechanism, and a pulse generating mechanism. The box body is provided with a cavity, the cavity being provided with an opening. The cutting and feeding mechanism comprises a first driving member, a rotating shaft, a plurality of first holding assemblies, and at least one cutting member. The plurality of first holding assemblies are uniformly distributed around the circumference of the rotating shaft. The first holding assemblies each comprises a first holding head and an extension part, the extension part being connected between the first holding head and the rotating shaft, and the first holding head being capable of holding a positive electrode sheet and rotating along with the rotating shaft to approach the opening. The cutting member is arranged near the first holding head, and the cutting member is capable of cutting the positive electrode sheet. The pulse generating mechanism comprises a second holding assembly and a third holding assembly. Both the second holding assembly and the third holding assembly are capable of holding the positive electrode sheet to pass through the opening and both are capable of being energized. In this way, automatic cutting and feeding and pulse discharging treatment can be performed on the positive electrode sheet by means of the automated apparatus.
A recovery system and a recovery method for lithium-iron-phosphate precursor slurry iron-discharge sewage. The recovery system comprises a first filter (4), a pipeline iron remover (5) and a second filter (8), which are connected in sequence, in the movement direction of lithium-iron-phosphate precursor slurry iron-discharge sewage (1). The recovery system can effectively treat the lithium-iron-phosphate precursor slurry iron-discharge sewage (1), realizing filter cake recovery and filtrate reuse, wherein recovered pure water is recycled to reduce the manufacturing cost of the pure water, and the sewage that has been treated by means of the system can be recovered for production line dosing or cleaning equipment, thereby achieving zero discharge of production line sewage.
Provided in the present application are a biomass-based hard carbon material, and a preparation method therefor and the use thereof. The preparation method comprises: sequentially performing anaerobic baking, impurity removal, oxidative modification and high-temperature carbonization on a biomass raw material to obtain a biomass-based hard carbon material. In the present application, by means of first sequentially performing anaerobic baking and impurity removal, lignin, cellulose, etc., in the biomass raw material are destroyed, and pores and defects are left inside the biomass raw material, such that the material is in a metastable-state structure to expose impurities; thus, impurity removal can be selected at a normal temperature, and an impurity removal effect is good; and the impurity content of the obtained biomass-based hard carbon is low, the ash content thereof can be reduced to 0.5 wt% or below, and the obtained biomass-based hard carbon has a disordered interlayer structure, thereby facilitating the intercalation/deintercalation of sodium ions, such that the material can show relatively high reversible capacity and initial efficiency performance.
C01B 32/05 - Préparation ou purification du carbone non couvertes par les groupes , , ,
H01M 4/583 - Matériau carboné, p. ex. composés au graphite d'intercalation ou CFx
H01M 10/054 - Accumulateurs à insertion ou intercalation de métaux autres que le lithium, p. ex. au magnésium ou à l'aluminium
H01M 4/58 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de composés inorganiques autres que les oxydes ou les hydroxydes, p. ex. sulfures, séléniures, tellurures, halogénures ou LiCoFyEmploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de structures polyanioniques, p. ex. phosphates, silicates ou borates
A method for recycling waste lithium iron phosphate, belonging to the technical field of material recycling. The method specifically separately reprocesses the precipitate and leachate obtained by separating and leaching waste lithium iron phosphate powder, using membrane concentration to highly enrich the lithium ions in the leachate and fully utilizing the filtrate generated during the treatment process, and ultimately can simultaneously and efficiently recover and obtain lithium salt and iron phosphate products. The entire method can achieve a lithium recovery rate of 95% or greater for waste lithium iron phosphate, the maximum concentration of impurity elements in the obtained iron phosphate not exceeding 5 ppm, and the quality of the iron phosphate product being relatively high.
A method for preparing battery-grade lithium carbonate from brine lithium carbonate, comprising the following steps: dissolving brine lithium carbonate to obtain a lithium-containing solution, and adding an extraction agent into the lithium-containing solution to perform extraction, to obtain an extraction solution and a raffinate; performing reverse extraction on the extraction solution to obtain a reverse extraction solution, and performing lithium precipitation processing or pyrolysis on the reverse extraction solution, to obtain battery-grade lithium carbonate, the extractant comprising a β-diketone and a co-extraction agent.
A battery tab cutting apparatus, comprising a clamping assembly (1), a cutting assembly (2) and a linkage assembly. A rack (34) is disposed on the clamping assembly (1). The cutting assembly (2) comprises a cutting base plate (21), a swing rod (22) and a cutter (23), the cutting base plate (21), the swing rod (22) and the cutter (23) being connected in sequence, and the cutter (23) being swingably disposed on the cutting base plate (21) by means of the swing rod (22). The linkage assembly comprises a first linkage member (31), a second linkage member (32), a third linkage member (33) and the rack (34), the rack (34) being disposed on the clamping assembly (1). The cutting base plate (21) is rotatably sleeved on the first linkage member (31). The first linkage member (31) is provided with a first spiral tooth section (311) and a second spiral tooth section (312). The second linkage member (32) is connected to the swing rod (22), and the second linkage member (32) has a threaded connection to the first spiral tooth section (311). Two ends of the third linkage member (33) engage with the second spiral tooth section (312) and the rack (34), respectively. The battery tab cutting apparatus can cut a tab off while pulling a cover plate away from a housing, such that the pulling away of the battery cover plate and the cutting of the tab can be performed in a link matter, thereby improving the overall operation efficiency of battery disassembly.
A sodium phosphate-coated sodium ion positive electrode material, a preparation method therefor and a use thereof, belonging to the technical field of battery materials. The sodium phosphate-coated sodium ion positive electrode material comprises a sodium ion positive electrode material and a sodium phosphate layer coated on the surface of the sodium ion positive electrode material, the thickness of the sodium phosphate layer being 1-20 nm. The sodium phosphate comprises at least one of sodium calcium phosphate, sodium barium phosphate, sodium strontium phosphate, sodium magnesium phosphate, and sodium aluminum phosphate. The sodium phosphate-coated sodium ion positive electrode material has a round shape, smooth surface, and uniform thickness.
H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p. ex. LiNiO2, LiCoO2 ou LiCoOxFy
H01M 4/62 - Emploi de substances spécifiées inactives comme ingrédients pour les masses actives, p. ex. liants, charges
H01M 4/505 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de manganèse d'oxydes ou d'hydroxydes mixtes contenant du manganèse pour insérer ou intercaler des métaux légers, p. ex. LiMn2O4 ou LiMn2OxFy
H01M 10/054 - Accumulateurs à insertion ou intercalation de métaux autres que le lithium, p. ex. au magnésium ou à l'aluminium
A vehicle-mounted battery crushing mechanism, comprising: a first crushing assembly (1), the first crushing assembly (1) being arranged within a vehicle compartment (8) and being arranged at an angle to transport a battery; a second crushing assembly (2), the second crushing assembly (2) being rotatably connected to the top of the first crushing assembly (1) to compress and crush a battery; a cutting assembly (3), the cutting assembly (3) being fixedly connected on the first crushing assembly (1) and fixedly connected to a rotating shaft of the first crushing assembly (1), the cutting assembly (3) cutting the battery on the side opposite the first crushing assembly (1) and the second crushing assembly (2). The present mechanism solves the technical problems where, when using current vehicle-mounted battery crushing mechanisms, it is not convenient to rapidly crush waste batteries entering into a vehicle compartment into small materials capable of being collected, thus reducing crushing efficiency of batteries, and it is not convenient to collect waste liquid when performing crushing, thus reducing subsequent treatment efficiency of the waste batteries.
B26D 1/00 - Coupe d'une pièce caractérisée par la nature ou par le mouvement de l'élément coupantAppareils ou machines à cet effetÉléments coupants à cet effet
H01M 10/54 - Récupération des parties utiles des accumulateurs usagés
H01M 6/52 - Récupération des parties utiles des éléments ou batteries usagés
24.
METHOD FOR RECYCLING FLUORINE-CONTAINING WASTE RESIDUE
The present text belongs to the technical field of fluorine-containing waste residue recycling, and in particular relates to a method for recycling fluorine-containing waste residue. The present text discloses: by means alkali leaching, performing secondary alkali leaching treatment on a fluoride salt-type fluorine-containing waste residue. The method is simple, efficient, and low in cost; sodium fluoride can be recycled from the fluoride salt, reducing waste residue processing pressure.
B09B 3/80 - Destruction de déchets solides ou transformation de déchets solides en quelque chose d'utile ou d'inoffensif impliquant une étape d'extraction
25.
DEVICE FOR SEPARATING BATTERY ELECTRODE SHEET BY HIGH-VOLTAGE PULSE, AND BATTERY ELECTRODE SHEET RECYCLING METHOD
The present application relates to a device for separating a battery electrode sheet by a high-voltage pulse, and a battery electrode sheet recycling method. The device for separating a battery electrode sheet by a high-voltage pulse comprises a water tank (4), a pulse discharge assembly (3), a guide assembly (1) and a driving assembly (2). The pulse discharge assembly (3) is located above the water tank (4). The pulse discharge assembly (3) comprises a power supply and two clamping heads (32) arranged at an interval, the clamp heads (32) are electrically connected to the power supply, and the clamp heads are configured to clamp a battery electrode sheet (6). The guide assembly (1) is configured to drive the pulse discharge assembly (3) to move up and down, and enable the battery electrode sheet (6) to be selectively immersed in water. The driving assembly (2) is configured to drive the pulse discharge assembly (3) to move along the length direction of the water tank (4).
Provided in the present disclosure is a recycling method for ferrophosphorus slag. The recycling method comprises the following steps: (1) mixing ferrophosphorus slag, a conductive agent and a binder, pressing same into a sheet, then compounding the sheet with a current collector to obtain a cathode electrode, mixing a waste lithium-ion battery positive electrode powder, the conductive agent and the binder, pressing same into a sheet, and compounding the sheet with the current collector to obtain an anode electrode; (2) injecting an electrolyte into a cathode chamber and an anode chamber of an electrolysis device, providing an anion exchange membrane between the cathode chamber and the anode chamber, and applying a voltage to the cathode electrode and the anode electrode to carry out an electrolytic reaction; and (3) adjusting the pH of the cathode chamber, adding an oxidizing agent thereto to carry out an oxidation reaction, and sintering the obtained precipitate to obtain a battery-grade iron phosphate. In the present disclosure, by using the ferrophosphorus slag, which has been pressed into blocks, as the cathode of an electrolytic cell, ferric iron therein is reduced into ferrous iron and dissolved out, and aluminum ions continue to remain in the ferrophosphorus slag blocks, thereby achieving the separation of iron and aluminum.
A nano-cobalt(II) hydroxide, a preparation method therefor, and a use thereof, belonging to the technical field of lithium-ion batteries. The preparation method comprises: reacting a cobalt salt solution and a precipitant solution at 30-35 ℃, and during the reaction process, adjusting the amount of precipitant solution added so as to control the pH of the reaction system to be 13-13.5, and after the reaction is finished, obtaining a nano-cobalt(II) hydroxide slurry. The precipitant solution comprises a liquid alkali and a deflocculant, and the mass ratio of the solute in the liquid alkali to the deflocculant is 1:0.02-0.05. Carrying out the reaction at a lower temperature prevents particle agglomeration caused by intensified Brownian motion among particles, thus facilitating the synthesis of ultra-fine nano-cobalt(II) hydroxide while reducing energy consumption; when the interaction forces between molecules become stronger, the use of both a higher pH and the deflocculant allows good dispersibility to still be maintained, thus reducing the occurrence of agglomeration; and the obtained crystal grains are small in size, are not prone to agglomerate, and have good dispersibility.
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p. ex. LiNiO2, LiCoO2 ou LiCoOxFy
28.
WASTE ACTIVATED CARBON MODIFICATION AND REGENERATION METHOD AND MODIFIED AND REGENERATED ACTIVATED CARBON
Disclosed in the present invention are a waste activated carbon modification and regeneration method and modified and regenerated activated carbon. The method comprises: sequentially performing chemical complexation, chemical modification and heating modification regeneration on waste activated carbon to obtain modified and regenerated activated carbon. According to the method in the present application, valuable metals in the waste activated carbon can be recycled by means of the step of chemical complexation; after recycling, the waste activated carbon is modified by means of the step of chemical modification, so that the specific surface area of the waste activated carbon can be increased, the surface functional groups thereof are increased, and the polarity thereof is increased; and then by means of the step of heating modification regeneration, most of organic matters on the waste activated carbon can be decomposed and gasified, thereby reducing the carbon loss, enhancing a pore structure of the activated carbon, and optimizing the adsorption performance of the activated carbon, obtaining the modified and regenerated activated carbon having good performance.
The present application belongs to the field of nickel laterite treatment methods, and specifically relates to a method for producing high-grade nickel matte using nickel laterite. Nickel laterite (such as limonite-type nickel laterite) having high iron content and low nickel and silicon content is used as a raw material, and sequentially undergoes steps such as over-reduction roasting, magnetic separation, and reduction-sulfidation roasting, to prepare high-grade nickel matte. In the process route provided by the present invention, existing equipment such as rotary kilns, electric furnaces, and magnetic separators can be used for production; the process is easy to control, and costs are low. The process route provided by the present application can also achieve the purpose of directly using limonite-type nickel laterite to produce high-grade nickel matte, while ensuring the nickel recovery rate.
The present disclosure relates to the technical field of positive electrode materials for lithium ion batteries and provides a high-nickel positive electrode material, and a preparation method therefor and a use thereof. The present disclosure comprises: first preparing a high-nickel core precursor by means of a co-precipitation method, and then preparing a carbonate shell layer containing a dioxime compound by means of a two-step method; obtaining a core-shell structure high-nickel positive electrode material precursor, and carrying out a chelation reaction between the dioxime compound in the carbonate shell layer and nickel ions, so that the nickel content in the carbonate shell layer is reduced, the thermal stability of the high-nickel positive electrode material is improved, and the instability problem caused by an excessively high nickel content in the high-nickel positive electrode material is solved. In addition, due to the chelation reaction between the dioxime compound and the nickel ions, a shell structure having a low nickel gradient can be formed in the carbonate shell layer, and the nickel content in the carbonate shell layer gradually decreases along the direction away from the core structure. In addition, in the present disclosure, an organic solvent is used for washing, so that the impact of water on the structure of the high-nickel positive electrode material can be avoided.
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p. ex. LiNiO2, LiCoO2 ou LiCoOxFy
H01M 4/505 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de manganèse d'oxydes ou d'hydroxydes mixtes contenant du manganèse pour insérer ou intercaler des métaux légers, p. ex. LiMn2O4 ou LiMn2OxFy
A remaining-battery-capacity-based low-carbon recycling method and apparatus for a traction battery, and a computer-readable storage medium. The recycling method comprises: when the carbon emission amount corresponding to the power supply efficiency of a traction battery is greater than a preset carbon emission index value, determining to recycle the traction battery, and additionally providing a heat recovery apparatus in a traction battery recycling apparatus, wherein the heat recovery apparatus is used for recovering heat which is generated when the traction battery breaks, and used for heating air inside the traction battery recycling apparatus; and selecting from among a plurality of different time periods the time period corresponding to the lowest carbon emission amount, so as to recycle the traction battery. The operating efficiency of the traction battery is accurately determined on the basis of real-time working state data of different parameters of the traction battery, and an appropriate occasion is selected for recycling the traction battery; and the impact of recycling the traction battery in different time periods on carbon emissions is calculated, and an appropriate time period is selected for recycling the traction battery.
Disclosed is a resource utilization method for iron-aluminum slag and nickel laterite ore acid leaching residue, belonging to the technical field of resource recovery and reuse. In the method, ternary solid waste iron-aluminum slag is processed using a suspension roasting pre-reduction pyrogenic method; after initial drying, and by means of a suspension roasting pre-reduction furnace, the iron-aluminum slag is further dried to remove water of crystallization and is pre-reduced, and valuable metals such as Ni and Co are enriched. The method has high pre-reduction efficiency and low production costs, is environmentally friendly, and the entire process is highly operable and produces little ferronickel slag. The ferronickel and nickel pig iron prepared and obtained via the present method have high nickel and iron content, and the ferronickel and nickel pig iron of the present invention have a high Ni, Co, and Fe direct recovery rate.
The present invention belongs to the field of lithium-ion batteries. Disclosed are a lithium iron phosphate composite material and a preparation method therefor. By subjecting lithium iron phosphate to morphology design in a product system, introducing a titanium dioxide nanotube and constructing a cross-linked carbon conductive network coating layer having a special structure, the existing performance defects of lithium iron phosphate are effectively solved, and good rate capability can be shown when lithium iron phosphate is used in a positive electrode material of a lithium-ion battery, and therefore the prepared lithium iron phosphate composite material is very suitable for full-chain integrated production in the field of power batteries.
C01B 25/45 - Phosphates contenant plusieurs métaux ou un métal et l'ammonium
H01M 4/58 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de composés inorganiques autres que les oxydes ou les hydroxydes, p. ex. sulfures, séléniures, tellurures, halogénures ou LiCoFyEmploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de structures polyanioniques, p. ex. phosphates, silicates ou borates
H01M 4/62 - Emploi de substances spécifiées inactives comme ingrédients pour les masses actives, p. ex. liants, charges
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p. ex. batteries à insertion ou intercalation de lithium dans les deux électrodesBatteries à l'ion lithium
34.
COATED MODIFIED POSITIVE ELECTRODE MATERIAL AND PREPARATION METHOD THEREFOR
A coated modified positive electrode material and a preparation method therefor. The preparation method for the coated modified positive electrode material comprises the following steps: mixing a lithium source, a precursor and a compound containing M, and performing calcining, crushing and sieving to obtain a sintered product; and putting the obtained sintered product and a compound containing M' into a reaction kettle for stirring, and performing stepwise heating, continuous stirring and cooling to obtain the coated modified positive electrode material. The coated modified positive electrode material has a uniform surface coating, less floating powder and the like, simple and mild preparation conditions, significantly reduced manufacturing processes, more controllable quality stability, and low manufacturing cost, and is more environmentally friendly. The prepared lithium-ion battery interface is relatively more stable, and has advantages in performance such as service life and gas production without affecting capacity.
H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p. ex. LiNiO2, LiCoO2 ou LiCoOxFy
H01M 4/485 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques d'oxydes ou d'hydroxydes mixtes pour insérer ou intercaler des métaux légers, p. ex. LiTi2O4 ou LiTi2OxFy
35.
PREPARATION METHOD FOR AND USE OF SODIUM-ION BATTERY NEGATIVE ELECTRODE MATERIAL
66222-NiS, biochar, and a binder in water, heating for reaction, carrying out solid-liquid separation, drying an obtained solid, and sintering in an inert atmosphere to obtain the sodium-ion battery negative electrode material.
H01M 4/58 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de composés inorganiques autres que les oxydes ou les hydroxydes, p. ex. sulfures, séléniures, tellurures, halogénures ou LiCoFyEmploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de structures polyanioniques, p. ex. phosphates, silicates ou borates
36.
METHOD FOR REMOVING ALUMINUM AND COPPER FROM A FERRIC PHOSPHATE RESIDUE AND USE THEREOF
A method for removing aluminum and copper from a ferric phosphate residue and the use thereof, the method comprising: subjecting a ferric phosphate residue to acid leaching to obtain an acid leaching solution; then mixing iron simple substance with the acid leaching solution to perform a first copper removal reaction, then mixing same with a soluble sulfide, such as sodium sulfide, and performing a second copper removal reaction, so as to obtain a copper-removed acid leaching solution; mixing an extractant with the copper-removed acid leaching solution, and performing extraction to obtain a ferrous phosphate solution and an aluminum-rich organic phase, thereby completing the removal of aluminum and copper. The present invention uses iron powder and a soluble sulfide for deep removal of copper and then extracts aluminum by using an extractant having high selectivity on aluminum, thus achieving the separation and removal of aluminum and copper. Using the iron powder and soluble sulfide can convert ferric iron in the system into ferrous iron, thereby preventing the loss of iron element during aluminum extraction processes, ensuring the recovery ratio of ferric phosphate to be greater than 99%, and effectively improving the purity of the obtained ferrous phosphate solution.
A waste battery feeding system for a whole industrial chain, the system comprising: a support frame, wherein a workbench is rotatably provided on the support frame, the workbench has a plurality of stations, a battery cell clamp is fixedly provided on each station, a glue grinding device, a voltage measuring device, an insulation treatment device, a qualified cell grasping device and an unqualified cell grasping device are sequentially provided on the support frame in the circumferential direction of the workbench, and the glue grinding device, the voltage measuring device, the insulation treatment device, the qualified cell grasping device and the unqualified cell grasping device are all arranged corresponding to one station; a first conveyor line arranged on one side of the qualified cell grasping device; and a second conveyor line arranged on one side of the unqualified cell grasping device.
A positive electrode material, a preparation method for a positive electrode material, and a use of a positive electrode material. The positive electrode material comprises titanium dioxide coated on a ternary material, and polydimethylsiloxane is grafted onto the titanium dioxide to form a hydrophobic layer. In one aspect, the hydrophobic layer can physically isolate the ternary material from reacting with water and carbon dioxide in the air. In another aspect, when polydimethylsiloxane is grafted onto titanium dioxide, the connection by means of chemical bonds between the two can form a hydrophobic layer more stable than by bonding or in similar approaches. Moreover, a hydrophobic layer formed by polydimethylsiloxane being grafted onto titanium dioxide, compared with directly using siloxane to modify a ternary material, has better hydrophobicity, and more stable durability in long-term electrolyte infiltration, preventing the reaction of HF acid with titanium dioxide or a positive electrode material in the electrolyte, thus enhancing the chemical stability of the positive electrode material as well as battery safety.
H01M 4/505 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de manganèse d'oxydes ou d'hydroxydes mixtes contenant du manganèse pour insérer ou intercaler des métaux légers, p. ex. LiMn2O4 ou LiMn2OxFy
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p. ex. LiNiO2, LiCoO2 ou LiCoOxFy
H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
H01M 4/62 - Emploi de substances spécifiées inactives comme ingrédients pour les masses actives, p. ex. liants, charges
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p. ex. batteries à insertion ou intercalation de lithium dans les deux électrodesBatteries à l'ion lithium
A lithium nickel manganese oxide positive electrode material, a preparation method therefor and a battery, belonging to the technical field of batteries. With regard to the lithium nickel manganese oxide positive electrode material, constructing a lithium phosphate coating layer and a solid electrolyte coating layer on the surface of a lithium nickel manganese oxide crystal effectively inhibits dissolution of transition metal in the positive electrode material, helping to reduce contact between the surface of the material and an electrolyte, thus reducing the corrosion effect of the electrolyte on the surface of the material, and allowing the material to have more excellent cycle performance. Moreover, the provision of the lithium phosphate layer can effectively reduce the phenomenon of low capacity caused by lithium capture by the solid electrolyte from the positive electrode material, thus achieving the purposes of improving the reversible specific capacity and long cycle performance of the material.
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p. ex. LiNiO2, LiCoO2 ou LiCoOxFy
H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
H01M 4/58 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de composés inorganiques autres que les oxydes ou les hydroxydes, p. ex. sulfures, séléniures, tellurures, halogénures ou LiCoFyEmploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de structures polyanioniques, p. ex. phosphates, silicates ou borates
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p. ex. batteries à insertion ou intercalation de lithium dans les deux électrodesBatteries à l'ion lithium
40.
ACTIVE MATERIAL THREAD, PREPARATION METHOD, AND USE
Disclosed in the present disclosure are an active material thread, a preparation method, and a use. The active material thread is formed by an electrode active material, polyester, a conductive agent, and a binder, the active material thread is woven on a filamentous carrier using the textile technology to form an electrode, and because the active material thread has good mechanical properties, the electrode of such a structure has good conformality, so that material pulverization caused by a volume change of the electrode in the charging and discharging process is inhibited to a certain extent, and cracking of an electrode sheet is inhibited. Compared with a traditional electrode manufactured by direct coating, a mesh electrode can improve the stability of the electrode, and can also improve the conductivity of ions, thereby ensuring the lithium ion transmission rate in the electrochemical process.
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p. ex. batteries à insertion ou intercalation de lithium dans les deux électrodesBatteries à l'ion lithium
41.
METHOD FOR REMOVING PHOSPHORUS FROM EXTRACTION WASTEWATER IN HYDROMETALLURGY INDUSTRY
Provided in the present disclosure is a method for removing phosphorus from extraction wastewater in the hydrometallurgy industry. The method comprises the following steps: S1, adjusting the pH of extraction wastewater to 3.5-4.5, adding ferrous sulfate thereto, and then carrying out an ultrasonic treatment to obtain a suspension; S2, carrying out solid-liquid separation on the suspension, taking out the liquid phase, stirring same, adding an acid solution to adjust the pH to 3-3.5, then adding ferrous sulfate and hydrogen peroxide, introducing oxygen and pressurizing same, and heating same to perform a reaction; S3, adding an alkaline solution thereto to adjust the pH to 7.5-8, then sequentially adding a coagulant and a flocculant thereto, carrying out solid-liquid separation, then taking out the liquid phase, adjusting the pH to 6-7, carrying out ozonation, adding aluminum sulfate after the reaction is finished, carrying out solid-liquid separation, and then measuring the phosphorus content of the effluent.
C02F 1/78 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par oxydation au moyen d'ozone
C02F 1/72 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par oxydation
C02F 103/16 - Nature de l'eau, des eaux résiduaires ou des eaux ou boues d'égout à traiter provenant de procédés métallurgiques, c.-à-d. de la production, de la purification ou du traitement de métaux, p. ex. déchets de procédés électrolytiques
42.
ELECTRIC-PULSE DESORPTION RECOVERY METHOD FOR POSITIVE ELECTRODE SHEET OF WASTE LITHIUM-ION BATTERY
An electric-pulse desorption recovery method for a positive electrode sheet of a waste lithium-ion battery. The recovery method comprises the following steps: (1) after discharging the waste lithium-ion battery, disassembling same to obtain a positive electrode sheet, performing high-voltage pulse discharging on the positive electrode sheet, then sorting and screening to obtain a positive electrode material and an aluminium foil; and (2) performing infrared heating on the positive electrode material to obtain a positive electrode material powder, performing hydrothermal lithium-supplementing repair on the positive electrode material powder, and calcining the lithium-supplemented repaired material to obtain a regenerated lithium-ion battery positive electrode material. The recovery method has advantages such as low energy consumption, high efficiency in separating the aluminium foil and the positive electrode material, good dispersibility of positive electrode material particles, and a good hydrothermal lithium-supplementing effect, thus achieving the recovery and reuse of positive electrode sheets of waste lithium-ion batteries.
A preparation method for nickel sulfate and a use thereof, belonging to the technical field of nickel sulfate preparation. The method comprises: reacting carbon dioxide with a nickel-iron alloy to produce a mixed solid containing nickel oxide and ferrous oxide, and a mixed gas containing carbon monoxide; reacting the mixed solid with sulfuric acid to obtain a first mixed solution containing nickel sulfate and ferrous sulfate, and subsequently removing the ferrous sulfate to obtain nickel sulfate. The described method avoids the problem that flammable and explosive hydrogen gas is generated during traditional nickel sulfate preparation by means of acid leaching of nickel-iron alloys, thus improving the safety of the process. The nickel sulfate thereby obtained can be further used to prepare a lithium nickel manganese cobalt oxide battery precursor.
Provided in the present disclosure are a positive electrode material precursor, a preparation method therefor, and the use thereof. The preparation method comprises: mixing a glycine buffer solution containing ethylene glycol with a metal source, and reacting same to obtain the positive electrode material precursor. The present disclosure uses the glycine buffer solution as a reaction substrate solution, and adds the metal source to same for reaction, thereby keeping the pH of the system stable, and improving the uniformity and purity of the metal element. In addition, by means of a synergistic effect between glycine and ethylene glycol, interfacial energy of different crystal planes of the precursor particles can be effectively regulated, thereby regulating the growth and arrangement modes of the precursor particles to enable precipitated particles to preferentially grow in the orientation of (003) crystal planes, so as to obtain elongated strip-shaped primary particles, which can provide a rapid diffusion channel for lithium ions, reduces the diffusion resistance of Li+ and improves the orderliness of the crystal structure, thereby improving the rate capability and the cycling stability of the positive electrode material.
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p. ex. batteries à insertion ou intercalation de lithium dans les deux électrodesBatteries à l'ion lithium
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p. ex. LiNiO2, LiCoO2 ou LiCoOxFy
45.
METHOD FOR RECYCLING AND PREPARING IRON PHOSPHATE FROM IRON PHOSPHATE-CONTAINING COLLECTED DUST MATERIAL, AND USE OF IRON PHOSPHATE
A method for recycling and preparing iron phosphate from an iron phosphate-containing collected dust material, comprising the following steps: sieving an iron phosphate-containing collected dust material, adding water to form a slurry, and carrying out filtering to obtain an anhydrous iron phosphate filter cake; preparing a slurry from the anhydrous iron phosphate filter cake and a phosphoric acid solution, and carrying out heating, recrystallization, and solid-liquid separation to obtain an iron phosphate dihydrate filter cake; and drying and roasting the iron phosphate dihydrate filter cake to obtain anhydrous iron phosphate. The anhydrous iron phosphate prepared using the method has a high tap density, a small particle size, a large specific surface area, and a low impurity content, can effectively improve the electrochemical performance of a battery, and has a wide application prospect.
H01M 4/58 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de composés inorganiques autres que les oxydes ou les hydroxydes, p. ex. sulfures, séléniures, tellurures, halogénures ou LiCoFyEmploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de structures polyanioniques, p. ex. phosphates, silicates ou borates
46.
PROCESSING DEVICE FOR LITHIUM BATTERY POSITIVE ELECTRODE MATERIAL
Disclosed is a processing device for a lithium battery positive electrode material, including a base, where the base is fixedly provided with barrel bodies by means of a support, a sleeve is rotatably clamped between the two barrel bodies, a stirring assembly transversely penetrates through interiors of the barrel bodies and the sleeve, the base is further provided with a power mechanism, and the power mechanism separately drives the sleeve and the stirring assembly to rotate. Due to the cooperation of the barrel bodies, the sleeve and the stirring assembly, the stirring assembly can effectively scrape attachments on the inner walls of the barrel bodies, and a first stirring blade in the sleeve and a second stirring blade in the stirring assembly are cooperated to stir, gather and further disperse and disarrange the material, such that the material can be mixed more uniformly.
B01F 29/64 - Mélangeurs à récipients rotatifs tournant autour d'un axe horizontal ou incliné, p. ex. mélangeurs à tambour avec des dispositifs d'agitation se déplaçant par rapport au récipient, p. ex. en tournant
B01F 35/12 - Entretien des mélangeurs utilisant des moyens mécaniques
A composite lithium manganese iron phosphate material, and a preparation method therefor and the use thereof, which are used in the technical field of lithium-ion battery positive electrode materials. The composite lithium manganese iron phosphate material comprises a lithium manganese iron phosphate active material and a solid additive, the solid additive comprising a porous solid electrolyte and a lithium manganese iron phosphate deposit, wherein the lithium manganese iron phosphate deposit is deposited on pores and the surface of the porous solid electrolyte, and the solid additive is dispersed inside and on the surface of the lithium manganese iron phosphate active material in a particle form. A solid electrolyte transport channel is added to the lithium manganese iron phosphate active material, thereby increasing the contact between a positive electrode and a solid electrolyte sheet, and significantly improving both the transport efficiency and ionic conductivity of interface lithium ions and the cycling stability and chargeable and dischargeable capacity of a battery.
Provided in the present disclosure is a method for preparing iron phosphate by means of full-chain integrated recycling of a waste lithium iron phosphate battery. The method comprises the following steps: (1) mixing a waste lithium iron phosphate material with a mixed chloride, and heating and melting the mixture, so as to obtain a mixed melt; (2) mixing the mixed melt with sodium stearate, then subjecting the mixture to a blowing reaction, and separating same to obtain carbon-containing lithium iron phosphate scum; (3) mixing the scum with an acid solution, adding hydrogen peroxide to perform a leaching reaction, and carrying out solid-liquid separation to obtain a lithium-containing solution and carbon-containing phosphorus iron slag; and (4) mixing the carbon-containing phosphorus iron slag with an acid solution, leaching the mixture to obtain a phosphorus iron solution, adjusting the phosphorus iron ratio, and adding a complexing agent to perform a coprecipitation reaction, so as to obtain iron phosphate. The method of the present disclosure can improve the purity of the recycled lithium, also avoid a multi-step impurity-removal process required to be carried out during the process of preparing iron phosphate from the phosphorus iron slag after lithium extraction, and further improve the purity and phosphorus iron recovery rate of the iron phosphate prepared from the phosphorus iron slag.
Provided in the present disclosure are a lithium manganese iron phosphate positive electrode material, and a preparation method therefor and the use thereof. The preparation method comprises the following steps: (1) mixing an iron source, a manganese source and a solvent, freezing the mixture to obtain a frozen solution A, freezing a phosphorus source solution to obtain a frozen solution B, crushing the frozen solution A and the frozen solution B at a low temperature, and pressing and freezing same to obtain a frozen solution C; (2) placing the frozen solution C in a reflux device, mixing a complexing agent and hydrogen peroxide to obtain a mixed solution, controlling the reflux of the mixed solution between the reflux device and a reaction device, and controlling the concentration and pH of the complexing agent in the system until the frozen solution C is completely melted to obtain a turbid liquid; and (3) subjecting the turbid liquid to a solid-liquid separation treatment, then mixing same with a lithium source, and sintering the mixture to obtain a lithium manganese iron phosphate positive electrode material. In the present disclosure, the raw material solutions are prepared into frozen solutions in advance, and the dissolution of the frozen solutions is controlled by using a reflux method, such that a coprecipitation reaction is slowly carried out, thereby preparing a lithium manganese iron phosphate positive electrode material having a small particle size and uniform element distribution.
C01B 25/45 - Phosphates contenant plusieurs métaux ou un métal et l'ammonium
H01M 4/58 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de composés inorganiques autres que les oxydes ou les hydroxydes, p. ex. sulfures, séléniures, tellurures, halogénures ou LiCoFyEmploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de structures polyanioniques, p. ex. phosphates, silicates ou borates
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p. ex. batteries à insertion ou intercalation de lithium dans les deux électrodesBatteries à l'ion lithium
50.
IRON PHOSPHATE, AND PREPARATION METHOD THEREFOR AND USE THEREOF
Iron phosphate, and a preparation method therefor and the use thereof. The preparation method comprises the following steps: (1) mixing a ferrous salt, a phosphorus source and a solvent to obtain a mixed salt solution, and freezing the mixed salt solution to obtain a frozen mixed salt solution; (2) placing the frozen mixed salt solution in a reflux device, controlling the reflux of a hydrogen peroxide solution between the reflux device and a reaction device, controlling the concentration of hydrogen peroxide in the system, and performing a reaction until the frozen mixed salt solution is completely dissolved; and (3) adjusting the pH in the system, and subjecting same to an aging reaction and solid-liquid separation to obtain iron phosphate. The solution containing the ferrous salt and the phosphorus source is frozen in advance, hydrogen peroxide is controlled to flow through the frozen mixed salt solution, and the reaction can be slowly performed by controlling the concentration and flow rate of hydrogen peroxide, such that the iron element and the phosphorus element in the prepared iron phosphate precursor are uniformly distributed, and surface defects are few.
H01M 4/58 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de composés inorganiques autres que les oxydes ou les hydroxydes, p. ex. sulfures, séléniures, tellurures, halogénures ou LiCoFyEmploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de structures polyanioniques, p. ex. phosphates, silicates ou borates
51.
TERNARY POSITIVE ELECTRODE MATERIAL, AND PREPARATION METHOD THEREFOR AND USE THEREOF
The present disclosure provides a ternary positive electrode material, and a preparation method therefor and a use thereof. The preparation method comprises the following steps: (1) mixing a nickel source, a cobalt source and a solvent, freezing to obtain a frozen solution A, mixing an aluminum source, a complexing agent and a solvent, freezing to obtain a frozen solution B, crushing the frozen solution A and the frozen solution B at a low temperature, pressing, and freezing to obtain a frozen solution C; (2) placing the frozen solution C in a backflow device, controlling an alkaline backflow liquid to flow back between the backflow device and a reaction device until the frozen liquid C is completely melted to obtain a suspension; and (3) carrying out solid-liquid separation on the suspension, mixing the obtained solid product with a lithium source, and sintering to obtain a ternary positive electrode material. According to the present disclosure, a simple backflow melting operation is used, the proportion of elements of the material can be guaranteed by means of a simple operation, uniform coprecipitation of nickel, cobalt and aluminum is achieved, and an ammonia complexing agent does not need to be used in the method, such that the environmental pollution is reduced, the distribution of the elements of the prepared ternary positive electrode material is uniform, and the lattice order degree is high.
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p. ex. LiNiO2, LiCoO2 ou LiCoOxFy
H01M 4/485 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques d'oxydes ou d'hydroxydes mixtes pour insérer ou intercaler des métaux légers, p. ex. LiTi2O4 ou LiTi2OxFy
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p. ex. batteries à insertion ou intercalation de lithium dans les deux électrodesBatteries à l'ion lithium
A vehicle-mounted battery recovery device (10), comprising a base (100), a suspension carrying mechanism (200), and a material feeding mechanism (300), a liquid cooling mechanism (400), and a positioning and conveying mechanism (500) sequentially arranged along the suspension carrying mechanism (200). The material feeding mechanism (300) is arranged on the base (100) and configured to convey a battery positioning disc (20) to a first predetermined position. The liquid cooling mechanism (400) comprises a liquid cooling driving member (410) and a first sliding door (420). The base (100) is provided with a freezing liquid nitrogen receiving tank (102) and a first sliding slot (104), and the freezing liquid nitrogen receiving tank (102) is communicated with the first sliding slot (104). The liquid cooling driving member (410) is mounted on the base (100). The first sliding door (420) is located in the first sliding slot (104) and slidably connected to the base (100). A power output end of the liquid cooling driving member (410) is connected to the first sliding door (420), so as to drive the first sliding door (420) to open or close the freezing liquid nitrogen receiving tank (102). The suspension carrying mechanism (200) is located above the base (100) and is configured to loosen or clamp the battery positioning disc (20), so as to carry the battery positioning disc (20) from the material feeding mechanism (300) to the freezing liquid nitrogen receiving tank (102) and the positioning and conveying mechanism (500) sequentially. The positioning and conveying mechanism (500) is mounted on the base (100) and configured to position and convey the battery positioning disc (20). The vehicle-mounted battery recovery device (10) further comprises a shell-removal mechanism (1100) and a core-removal mechanism sequentially arranged along a conveying direction of the positioning and conveying mechanism (500).
Disclosed is a method for full-chain integrated recycling of post-lithium-extractraction ferrophosphorus slag from waste batteries. The method comprises the following steps: (1) carrying out primary acid leaching on post-lithium-extractraction ferrophosphorus slag, and adding an iron ion precipitant for reaction to obtain impurity-removed ferrophosphorus slag; (2) carrying out secondary acid leaching on the impurity-removed ferrophosphorus slag to obtain a ferrophosphorus solution; and (3) mixing the ferrophosphorus solution with a buffer solution, carrying out a precipitation reaction, and carrying out heat treatment on obtained precipitates upon completion of reaction to obtain iron phosphate. According to the present application, firstly, impurities in ferrophosphorus slag are removed by means of primary acid leaching, and an iron ion precipitant is added such that iron ions dissolved in the acid leaching form precipitates, avoiding iron loss; and then secondary acid leaching is carried out such that all Fe and P are leached out, effectively increasing the recovery rate of iron in the ferrophosphorus slag. In addition, the iron phosphate precipitation process is carried out in a buffer solution, so that the purity of iron phosphate can be increased, and the uniform consistency of iron phosphate particles can be improved, thereby obtaining high-quality iron phosphate.
A low-carbon battery cell separator and electrode plate separation and recovery device. A traction member pulls an electrode assembly to move in a first direction and through a cutting member, one of recovery mechanisms, one of tearing mechanisms, a further recovery mechanism, a further tearing mechanism and the remaining recovery mechanisms in sequence, so as to recover a first separator, a first electrode plate, a second electrode plate and a second separator in sequence, realizing the automatic recovery of separators and electrode plates of battery cells.
H01M 10/54 - Récupération des parties utiles des accumulateurs usagés
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p. ex. batteries à insertion ou intercalation de lithium dans les deux électrodesBatteries à l'ion lithium
55.
BATTERY CELL ELECTRODE SHEET AND SEPARATOR WINDING DEVICE
A battery cell electrode sheet and separator winding device. An electrode sheet or a separator is held in place by means of suction cup assemblies (14), and a first driving member drives a rotary drum (11) to rotate, so as to drive the electrode sheet or the separator to cover onto a plurality of suction cup assemblies (14), a plurality of guide rollers (13), and an insertion roller (15), which are located outside of the rotary drum (11); when the rotary drum (11) drives the insertion roller (15) to move to a protrusion of a cam (12), the insertion roller (15) moves outwards in the radial direction of the rotary drum (11) and passes through an insertion slot (211) of a winding drum (21), so as to insert the electrode sheet or the separator into the winding drum (21); then, the rotary drum (11) continues to rotate, such that, under the action of an elastic member (16), the insertion roller (15) exits from the insertion slot (211); next, a third driving member drives a pressing member (22) to fix against an inner wall of the winding drum (21) the electrode sheet or the separator that has been pushed into the winding drum (21); thus, by means of a second driving member driving the winding drum (21) to rotate, the electrode sheet or the separator can be wound into the winding drum (21). The battery cell electrode sheet and separator winding device can complete a winding operation without the need for manually fixing the end of an electrode sheet or a separator, and is thus highly practical.
A vehicle-mounted crushing apparatus (10), comprising: a vehicle container (100); a crushing mechanism (200), which comprises a crushing box (210), a filter plate (220), a sliding door assembly (230) and a crushing assembly (240), wherein the crushing box (210) is mounted in the vehicle container (100), a crushing cavity (202) is provided in the crushing box (210), a feeding port (204) in communication with the crushing cavity (202) is provided in the top of the crushing box (210), an oxygen concentration sensor (2023) is provided in the crushing cavity (202), the filter plate (220) is transversely arranged in the crushing cavity (202) and is connected to an inner wall of the crushing box (210), a plurality of liquid passing holes (222) distributed at intervals are provided in the filter plate (220), a discharge port (206) in communication with a main crushing cavity (2022) is provided on a side wall of the crushing box (210), the sliding door assembly (230) is slidably connected to the crushing box (210), the sliding door assembly (230) is configured to open or close the discharge port (206), the crushing assembly (240) is mounted at the feeding port (204), and the crushing assembly (240) is configured to crush a battery; a nitrogen supply mechanism (300), which comprises a nitrogen pipe body (310) and a supply control valve (320), wherein one end of the nitrogen pipe body (310) is in communication with the main crushing cavity (2022), and the other end of the nitrogen pipe body (310) is externally connected to a nitrogen source, the supply control valve (320) is arranged on the nitrogen pipe body (310), a control end of the supply control valve (320) is electrically connected to the oxygen concentration sensor (2023), and the supply control valve (320) is configured to be opened when the oxygen concentration in the crushing cavity (202) is equal to a preset concentration threshold value; and a waste gas treatment mechanism (400), which is located in the vehicle container (100), wherein the waste gas treatment mechanism (400) is in communication with each of the main crushing cavity (2022) and an evaporation cavity (2024), and the waste gas treatment mechanism (400) is configured for temporary storage and processing of a waste gas.
A battery discharge and casing removal device (10), comprising: a machine body (100), a first conveying mechanism (200), a battery placement support (300), a discharge mechanism (400), a second conveying mechanism (500), a casing removal mechanism (600), a core extraction mechanism (700) and a carrying mechanism (800). The second conveying mechanism (500) comprises a rotating component (520). A plurality of batteries (20) are loaded in batches at a loading position to a positioning discharge area via the battery placement support (300), and are subjected to batch discharging by means of the discharge mechanism (400); and the carrying mechanism (800) moves the battery placement support (300) from the positioning discharge area to the rotating component (520) for batch casing removal and core extraction processing. Performing batch discharge, casing removal and core extraction processing on the plurality of batteries (20) shortens the overall recovery time of the batteries (20).
The present disclosure discloses a method for recycling a lithium-ion battery electrolyte. After the waste lithium-ion battery is discharged, it is frozen and disassembled to obtain a battery cell containing an electrolyte. The battery cell is immersed in a lithium hydroxide solution containing a catalyst for reaction. The battery cell after the reaction is taken out and washed. The washing solution is mixed with the lithium hydroxide solution after the reaction to obtain a mixed solution. The mixed solution is filtered to obtain a filtrate and a filter residue. The filter residue is reacted with a hydrofluoric acid solution to obtain anhydrous lithium salt. The anhydrous lithium salt is mixed with an organic solution, and PF5 gas is introduced. The mixture is reacted, and filtered to obtain an organic liquid. The organic solution is frozen and filtered to obtain lithium hexafluorophosphate.
The present invention relates to the technical field of oil-water separation devices. Disclosed are an oil removal apparatus and a flushing method therefor. The oil removal apparatus comprises a tank body. A lower water distribution region, a first-stage material filling region, an intermediate water collection region, a second-stage material filling region, and an upper water collection region are arranged in sequence from bottom to top in the tank body. A water intake pipe and a water drainage pipe are provided on the tank body. Two layers of perforated plates are disposed in the intermediate water collection region in the tank body. The tank body is further provided with a first-stage water production pipe and a second-stage water production pipe. The water intake pipe, the water drainage pipe, the first-stage water production pipe, and the second-stage water production pipe each is provided with a valve. The tank body is further provided with manholes in one-to-one correspondence with the first-stage material filling region, the intermediate water collection region, and the upper water collection region. The tank body is provided with material discharging ports at the bottoms of the first-stage material filling region and the second-stage material filling region. Water intake and discharge can selectively be performed by means of different piping, and different flushing methods are selected for a first-stage filling material and a second-stage filling material, so that the oil removal effect is improved and the amount of backwashing wastewater is reduced. Material discharging and replacement can be performed on the first-stage filling material and the second-stage filling material by means of material discharging ports, so that the waste of activated carbon is reduced.
C02F 1/40 - Dispositifs pour séparer ou enlever les substances grasses ou huileuses, ou les matières flottantes similaires
C02F 1/28 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par absorption ou adsorption
B01J 20/20 - Compositions absorbantes ou adsorbantes solides ou compositions facilitant la filtrationAbsorbants ou adsorbants pour la chromatographieProcédés pour leur préparation, régénération ou réactivation contenant une substance inorganique contenant du carbone libreCompositions absorbantes ou adsorbantes solides ou compositions facilitant la filtrationAbsorbants ou adsorbants pour la chromatographieProcédés pour leur préparation, régénération ou réactivation contenant une substance inorganique contenant du carbone obtenu par des procédés de carbonisation
A lithium extraction electrode, a lithium extraction method, and a lithium extraction system. The lithium extraction electrode is designed based on a specific structure, and, after a lithium removal reaction is performed, can be directly used in electrochemical lithium extraction of water; after lithium extraction is completed, lithium ions can be directly recycled by means of a reverse reaction, and the lithium ions can be put into a next batch of water for lithium extraction. Thus there is no requirement for replacement or apparatus assistance, and lithium extraction efficiency is high.
23abc22 material, the removal of Li+22O is reduced, thereby reducing lattice oxygen removal, thus mitigating unstable Mn elements on the surface layer of the material due to oxygen removal, and reducing the formation of a low-capacity spinel structure, wherein x is greater than 0 and less than or equal to 1, a+b+c=1, a is greater than 0 and less than 1, b is greater than or equal to 0 and less than 1, and c is greater than 0 and less than 1. The presence of a fast ion conductor layer can also improve the ion diffusion rate in the lithium-rich manganese-based positive electrode material, thereby effectively improving the ionic conductivity of the lithium-rich manganese-based positive electrode material, improving the capacity, and improving the rate performance and cycling performance.
H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
H01M 4/485 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques d'oxydes ou d'hydroxydes mixtes pour insérer ou intercaler des métaux légers, p. ex. LiTi2O4 ou LiTi2OxFy
H01M 4/505 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de manganèse d'oxydes ou d'hydroxydes mixtes contenant du manganèse pour insérer ou intercaler des métaux légers, p. ex. LiMn2O4 ou LiMn2OxFy
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p. ex. LiNiO2, LiCoO2 ou LiCoOxFy
H01M 4/62 - Emploi de substances spécifiées inactives comme ingrédients pour les masses actives, p. ex. liants, charges
62.
MANGANESE IRON PHOSPHATE PRECURSOR, LITHIUM MANGANESE IRON PHOSPHATE POSITIVE ELECTRODE MATERIAL, PREPARATION METHOD AND USE
The present disclosure belongs to the technical field of lithium batteries, and specifically relates to a manganese iron phosphate precursor, a lithium manganese iron phosphate positive electrode material, a preparation method, and a use. The present disclosure utilizes the feature of iron phosphate precipitation and aluminum phosphate precipitation having similar Ksp, first synthesizing aluminum iron phosphate by means of coprecipitation, and mixing the aluminum iron phosphate evenly, and then using a reaction between aluminum iron phosphate and manganese chloride to prepare a stable manganese iron phosphate precursor; aluminum chloride generated during the reaction can be directly volatilized. The synthesis route provided by the present disclosure can effectively solve the problem of a non-uniform manganese iron phosphate precursor caused by directly coprecipitating manganese phosphate and iron phosphate; the iron-manganese ratio of the prepared manganese iron phosphate precursor is closer to a target value, and the specific capacity and cycle performance of the lithium manganese iron phosphate then prepared using said precursor can be effectively improved. The entire process is simple and easy to operate, with low process costs, and has very good prospects for industrial application.
The present disclosure relates to the technical field of analytical chemistry, and in particular to a method for measuring the content of calcium fluoride in lithium iron phosphate hydrometallurgical waste residues. The method comprises: using citric acid to treat lithium iron phosphate hydrometallurgical waste residues to dissolve iron and aluminum in the waste residues, using the reducibility of the citric acid to reduce Fe3+into Fe2+ to avoid complexation with fluoride ions, and due to calcium fluoride being insoluble in the citric acid, separating iron and aluminum from the lithium iron phosphate hydrometallurgical waste residues by means of a solid-liquid separation method; and using inorganic strong acid to dissolve the solid material obtained after solid-liquid separation to obtain a solution under test, using a fluorine ion selection electrode to accurately measure the content of fluorine in said solution, and then calculating the content of calcium fluoride in the lithium iron phosphate hydrometallurgical waste residues. The measurement method provided by the present disclosure does not require the addition of iron and aluminum masking agents such as triethanolamine, has the advantages of involving simple and convenient operation and low costs, and can be used for quickly and accurately measuring the content of calcium fluoride in lithium iron phosphate hydrometallurgical waste residues on a large scale.
G01N 27/26 - Recherche ou analyse des matériaux par l'emploi de moyens électriques, électrochimiques ou magnétiques en recherchant des variables électrochimiquesRecherche ou analyse des matériaux par l'emploi de moyens électriques, électrochimiques ou magnétiques en utilisant l'électrolyse ou l'électrophorèse
64.
LITHIUM BATTERY POSITIVE ELECTRODE PROCESSING WASTEWATER RECOVERY AND TREATMENT APPARATUS AND METHOD
The present application relates to the technical field of lithium battery positive electrode processing wastewater recovery and treatment. Disclosed are a lithium battery positive electrode processing wastewater recovery and treatment apparatus and method. The apparatus comprises: a collection unit, comprising a first storage tank and a second storage tank, the first storage tank being configured to store phosphorus-containing wastewater, and the second storage tank being configured to store lithium-containing wastewater; a reaction unit, comprising a pool body and a press filtration module, wherein the pool body comprises a reaction chamber and a precipitation chamber communicated with each other, a stirring module is mounted in the reaction chamber, a horizontally arranged filling material layer and a vertically arranged partition plate are mounted in the precipitation chamber, a side of the filling material layer is connected to the partition plate, the partition plate and the filling material layer divide the precipitation chamber into an upper region and a lower region, the press filtration module comprises a diaphragm pump and a filter press, and the lower region is communicated with the filter press by means of the diaphragm pump; and a test unit, comprising a pH meter, a flow meter, and a turbidity meter. According to the recovery and treatment apparatus and method of the present application, wastewater residues can be fully utilized and the costs of wastewater recovery are reduced.
A Prussian blue positive electrode material, and a preparation method therefor and a use thereof. The preparation method comprises the following steps: (1) respectively freezing a portion of a sodium ferrocyanide solution and a portion of a transition metal salt solution, crushing the frozen sodium ferrocyanide solution and the frozen transition metal salt solution at a low temperature and mixing same, and pressing and freezing to obtain a frozen mixed solution; (2) mixing the other portion of the sodium ferrocyanide solution and the other portion of the transition metal salt solution at a low temperature, and then performing heating treatment to obtain a seed crystal suspension; and (3) placing the frozen mixed solution in a backflow device, controlling the seed crystal suspension to flow back between a reaction kettle and the backflow device until the frozen mixed solution is completely dissolved, and then performing aging treatment to obtain a Prussian blue positive electrode material. According to the method, the reaction rate can be controlled, so that the reaction rate is low, particle agglomeration is reduced, and the electrical performance of the material is more excellent.
H01M 4/58 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de composés inorganiques autres que les oxydes ou les hydroxydes, p. ex. sulfures, séléniures, tellurures, halogénures ou LiCoFyEmploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de structures polyanioniques, p. ex. phosphates, silicates ou borates
H01M 10/054 - Accumulateurs à insertion ou intercalation de métaux autres que le lithium, p. ex. au magnésium ou à l'aluminium
66.
TERNARY POSITIVE ELECTRODE MATERIAL, AND PREPARATION METHOD THEREFOR AND USE THEREOF
Provided in the present disclosure are a ternary positive electrode material, and a preparation method therefor and the use thereof. The preparation method comprises the following steps: (1) mixing a nickel source, a cobalt source, a non-ammonia complexing agent and a solvent, freezing the mixture to obtain a frozen solution A, freezing a manganese salt solution to obtain a frozen solution B, crushing the frozen solution A and the frozen solution B at a low temperature, and pressing and freezing same to obtain a frozen solution C; (2) placing the frozen solution C in a reflux device, controlling the reflux flow of an alkaline reflux between the reflux device and a reaction device until the frozen solution C is completely melted to obtain a turbid liquid, and subjecting the turbid liquid to solid-liquid separation to obtain a precursor; and (3) mixing the precursor with a lithium source, and sintering the mixture to obtain a ternary positive electrode material. By means of the method of the present disclosure, grains can be slowly generated, thereby avoiding a seed crystal agglomeration phenomenon caused by excessive fast growth, and nickel, cobalt and manganese elements in the prepared precursor are uniformly distributed, thereby improving the electrochemical performance of the ternary positive electrode material.
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p. ex. LiNiO2, LiCoO2 ou LiCoOxFy
H01M 4/505 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de manganèse d'oxydes ou d'hydroxydes mixtes contenant du manganèse pour insérer ou intercaler des métaux légers, p. ex. LiMn2O4 ou LiMn2OxFy
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p. ex. batteries à insertion ou intercalation de lithium dans les deux électrodesBatteries à l'ion lithium
67.
METHOD FOR MEASURING CHROMIUM CONTENT IN LATERITE-NICKEL ORE
The present invention relates to the technical field of detection and analysis. Disclosed is a method for measuring the chromium content in laterite-nickel ore. In the present invention, a standard addition method is used, that is, a matrix in a standard solution is similar to a sample matrix, and analysis parameters are reasonably selected, so that matrix effects of easily ionized elements and other elements can be suppressed or eliminated. That is, laterite-nickel ore is digested by using a simple, efficient and low-cost method integrating sodium peroxide alkali fusion, hot water leaching, and hydrochloric acid dissolution, and the ionization interference of ICP-OES is reduced by the standard addition method, so that current research and development requirements are met, and a fast and simple method is provided for subsequent batch testing.
G01N 21/73 - Systèmes dans lesquels le matériau analysé est excité de façon à ce qu'il émette de la lumière ou qu'il produise un changement de la longueur d'onde de la lumière incidente excité thermiquement en utilisant des brûleurs ou torches à plasma
Disclosed in the present invention are a salt lake lithium extraction device and method, belonging to the technical field of salt lake lithium extraction. The salt lake lithium extraction device comprises: a feed liquid tank, a cathode chamber, an anode chamber, an extraction tank and a boron removal tank, wherein the feed liquid tank, the cathode chamber, the anode chamber, the extraction tank and the boron removal tank are sequentially separated by exchange membranes, and the extraction tank is connected to a back extraction tank. In the present disclosure, by means of providing the extraction tank and the boron removal tank, formation of boric acid precipitation which affects lithium extraction is effectively avoided during the lithium extraction process, and moreover, boron removal reaction is carried out while lithium extraction is performed, such that brine does not need to be pretreated for boron removal, thus simplifying the process, and effectively improving the lithium recovery rate and the purity of lithium.
C22B 3/20 - Traitement ou purification de solutions, p. ex. de solutions obtenues par lixiviation
C22B 3/38 - Traitement ou purification de solutions, p. ex. de solutions obtenues par lixiviation par extraction liquide-liquide utilisant des composés organiques contenant du phosphore
69.
COMPOSITE LITHIUM EXTRACTION ADSORBENT, AND PREPARATION METHOD THEREFOR AND USE THEREOF
Provided in the present disclosure are a composite lithium extraction adsorbent, and a preparation method therefor and the use thereof. The composite lithium extraction adsorbent comprises a lithium extraction adsorbent and a modified oxygen evolution catalyst provided on the surface of the lithium extraction adsorbent, and the modified oxygen evolution catalyst comprises a sulfur-containing NiFe-LDH oxygen evolution catalyst. In the present disclosure, the lithium extraction adsorbent and the modified oxygen evolution catalyst are compounded to prepare the composite lithium extraction adsorbent, the composite lithium extraction adsorbent is electrified during the adsorption and lithium extraction process to ensure that OH-on the surface of the adsorbent is consumed, and also, the adverse effect of ClO- is eliminated, the alkalinity of the surface of the adsorbent is reduced, corrosion of the adsorbent is reduced, and the service life of the adsorbent is prolonged.
B01J 20/04 - Compositions absorbantes ou adsorbantes solides ou compositions facilitant la filtrationAbsorbants ou adsorbants pour la chromatographieProcédés pour leur préparation, régénération ou réactivation contenant une substance inorganique contenant des composés des métaux alcalins, des métaux alcalino-terreux ou du magnésium
B01J 20/30 - Procédés de préparation, de régénération ou de réactivation
C25B 1/04 - Hydrogène ou oxygène par électrolyse de l'eau
70.
DEVICE AND METHOD FOR EXTRACTING LITHIUM FROM SALT LAKE
Provided in the present disclosure are a device and method for extracting lithium from a salt lake. The device comprises a power supply, a lithium-extracting compartment, a lithium-removing compartment and an electrolyte compartment. The method comprises the following steps: (1) mixing a lithium-removing material and an electrolyte to prepare a lithium-removing flowing slurry, and mixing a lithium-intercalated material and lithium-containing salt lake brine to prepare a lithium-intercalated flowing slurry; (2) injecting an electrolyte into the electrolyte compartment, making the lithium-removing flowing slurry flow through the lithium-removing compartment, making the lithium-intercalated flowing slurry flow through the lithium-extracting compartment, and energizing same to carry out a lithium-extracting reaction; and (3) collecting the liquid flowing out of the lithium-extracting compartment, filtering same and then mixing same with the electrolyte, making the mixture flow through the lithium-removing compartment, continuing to carry out the lithium-extracting reaction, and collecting the liquid in the electrolyte compartment to obtain a lithium-rich solution. The device for extracting lithium from a salt lake of the present disclosure has a simple structure, and the method reduces the impurity-removing pressure of an ion exchange membrane and prolongs the service life of the ion exchange membrane; in addition, the obtained lithium-rich solution has a low impurity concentration, and the effect of impurity removal is better.
Disclosed are a lithium iron manganese phosphate, and a preparation method and the use thereof, belonging to the technical field of battery materials. Manganese ferrous phosphate is synthesized by using a coprecipitation method, and oxidized with chlorine gas. During the oxidation process, some ferrous ions are oxidized into trivalent iron, which reacts with chlorine gas to generate ferric chloride. With the volatilization of ferric chloride, the trivalent iron is removed, which forms channels available for lithium ion diffusion in manganese ferrous phosphate, thereby improving the diffusion rate of lithium ions, and forming a lithium iron manganese phosphate positive electrode material with a more stable structure and excellent performance.
H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
H01M 4/583 - Matériau carboné, p. ex. composés au graphite d'intercalation ou CFx
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p. ex. batteries à insertion ou intercalation de lithium dans les deux électrodesBatteries à l'ion lithium
The present disclosure belongs to the field of lithium ore metallurgy. Provided in the present disclosure is a method for extracting lithium and aluminum from red mud and lithium chinastone. The method comprises: mixing lithium chinastone and red mud, subjecting the mixture to primary roasting, soaking same in water to obtain a soaked material, subjecting the soaked material to secondary roasting, subjecting the soaked material from the secondary roasting to primary leaching to obtain a leachate, and removing impurities from the resulting leachate to obtain an accepted lithium liquid product, and subjecting the resulting leaching residue to secondary leaching to obtain an aluminum solution with a high aluminum content, thereby achieving the extraction of both lithium and aluminum, and the effective separation thereof. In the method, the red mud, which is also industrial solid waste, is used as a raw material, and lithium is directly extracted from the lithium chinastone ore raw material; the method is simple and reliable, and has low production costs and a high lithium recovery rate reaching 98.7% or more, thereby facilitating large-scale industrialization; and the method uses a large amount of industrial solid waste, and is more environmentally friendly with considerable economic benefits.
A step-by-step recycling method for decommissioned lithium batteries. The method comprises the following steps: performing pre-processing on a decommissioned lithium battery, to obtain a powder; mixing the powder and a first organic acid, and performing a leaching reaction, to obtain a leachate containing lithium and aluminum, and a first leaching residue; mixing the first leaching residue and a composite ammonia source, and performing a leaching reaction, to obtain a copper-containing leachate and a second leaching residue; performing acid leaching on the second leaching residue, to obtain a solution containing nickel, cobalt, manganese and iron, and a third leaching residue; and mixing the solution containing nickel, cobalt, manganese and iron with a pH value regulator, performing a reaction, and aging, to obtain a solution containing nickel, cobalt, and manganese, and an iron precipitation residue. The method reduces the loss of valuable metal elements lithium, nickel, cobalt and manganese, and the output of slag; increases the recovery rate of metallic lithium; implements high-value utilization of copper and aluminum in the leaching solution; and reduces process production costs. In addition, reclamation and reduction of solid waste in a lithium battery wet recycling process is achieved.
C22B 7/00 - Mise en œuvre de matériaux autres que des minerais, p. ex. des rognures, pour produire des métaux non ferreux ou leurs composés
C22B 3/16 - Extraction de composés métalliques par voie humide à partir de minerais ou de concentrés par lixiviation dans des solutions organiques
C22B 3/14 - Extraction de composés métalliques par voie humide à partir de minerais ou de concentrés par lixiviation dans des solutions inorganiques alcalines contenant de l'ammoniaque ou des sels d'ammonium
Disclosed are an electrode material for lithium extraction from salt lake, and a preparation method and a use thereof. The preparation method comprises the following steps: (1) heating an electrode active material, and mixing the heated electrode active material with an organic solvent to obtain a dispersion liquid; (2) mixing the dispersion liquid with an organic positive electrode coating agent, and implementing a heating reflux reaction; and (3) cooling a material obtained by the heating reflux reaction, and removing a supernatant after centrifugation to obtain an electrode material for lithium extraction from salt lake. In the present application, an organic positive electrode material coating layer is coated on the surface of an electrode material, so that the mechanical strength of an electrode can be improved, and the electrode has high lithium ion conductivity in the lithium extraction process while the electrode capacity is not reduced.
C22B 3/22 - Traitement ou purification de solutions, p. ex. de solutions obtenues par lixiviation par des procédés physiques, p. ex. par filtration, par des moyens magnétiques
H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
75.
APPARATUS FOR EFFICIENTLY PRETREATING AND RECYCLING WASTE BATTERY
Disclosed is an apparatus for efficiently pretreating and recycling a waste battery, which includes a bottom plate, a recycling device, a conveying device and a treatment device, and one end of a top portion of the bottom plate is fixedly mounted with a bottom portion of the conveying device. According to the invention, by arranging a fixing assembly and the recycling device, a suction pump can suck a slurry and an electrolyte in a battery downwardly for dropping, and a driving assembly can rapidly convey the slurry and the electrolyte in the battery to the treatment device for treatment at the same time.
H01M 10/54 - Récupération des parties utiles des accumulateurs usagés
B02C 18/10 - Désagrégation par couteaux ou autres organes coupants ou déchirants qui transforment le matériau en fragmentsHachoirs ou appareils similaires utilisant des vis ou analogue à couteaux rotatifs à l'intérieur de récipients verticaux les organes de transmission étant disposés au-dessus du récipient
B02C 23/16 - Séparation ou triage de matériaux, associé au broyage ou à la désagrégation au moyen d'un séparateur délimitant la fin de la zone de broyage ou de désagrégation, p. ex. au moyen d'un tamis empêchant la sortie des matériaux hors dimension
B04B 11/00 - Alimentation, chargement, ou déchargement des tambours
B65G 51/00 - Transport d'objets par tuyaux ou tubes utilisant l'écoulement ou la pression d'un fluideTransport d'objets sur une surface plane, p. ex. le fond d'un caniveau, par jets disposés le long de la surface
Disclosed are a lithium extraction device and a lithium extraction method, relating to the technical field of lithium extraction. In the lithium extraction device, by providing a movable ionic membrane, the ionic membrane can be replaced or adjusted according to requirements, without replacing electrodes, so as to perform multiple adsorption and desorption processes. In this process, the ionic membrane does not need to be cleaned, thereby omitting cleaning water, and greatly saving energy consumption and costs. Moreover, in this process, intercalated and deintercalated electrodes do not need to be replaced back and forth, thereby improving the lithium extraction efficiency.
Disclosed is a method for recycling materials in waste batteries by means of full-chain integrated treatment, relating to the technical field of battery recycling. The method comprises: grafting a positive electrode sheet and a separator connected to the positive electrode sheet in a waste battery, so that the separator and a positive electrode binder for the positive electrode sheet are cross-linked by means of a graft; swelling the grafted material to reduce the bonding force between the positive electrode binder and a positive electrode current collector in the positive electrode sheet; and under the action of an external force, separating the positive electrode current collector from a positive electrode active material to which the separator is bonded. By means of the method, the positive electrode active material and the current collector in the waste battery can be effectively separated, and then the separated materials can be recycled.
A device and method for stripping aluminum foil and a positive electrode material of a waste lithium ion battery based on full-chain integration. The device for stripping the aluminum foil and the positive electrode material of the waste lithium ion battery based on the full-chain integration comprises: a freezing mechanism (110), a positive electrode sheet traction mechanism (120), a laser heating mechanism (140), a negative pressure mechanism (160), and a stripping chamber (130). The freezing mechanism (110) is disposed outside the stripping chamber (130) and is configured to freeze a positive electrode sheet (200) placed on the positive electrode sheet traction mechanism (120). The positive electrode sheet traction mechanism (120) passes through the stripping chamber (130). The laser heating mechanism (140) is located in the stripping chamber (130) and oriented toward the positive electrode sheet (200) on the positive electrode sheet traction mechanism (120). The negative pressure mechanism (160) is located in the stripping chamber (130) and is located below the positive electrode sheet traction mechanism (120). A scraper (131) is further disposed in the stripping chamber (130). The scraper (131) is disposed on an upper surface of the positive electrode sheet traction mechanism (120) and is in contact with the positive electrode sheet (200) to strip off the aluminum foil (201) and the positive electrode material of the positive electrode sheet (200). According to the device, the efficient separation of the positive electrode material and the aluminum foil is implemented, and the purity of a recycled material is increased.
H01M 10/54 - Récupération des parties utiles des accumulateurs usagés
B09B 3/30 - Destruction de déchets solides ou transformation de déchets solides en quelque chose d'utile ou d'inoffensif impliquant un traitement mécanique
B09B 3/40 - Destruction de déchets solides ou transformation de déchets solides en quelque chose d'utile ou d'inoffensif impliquant un traitement thermique, p. ex. évaporation
B09B 3/50 - Destruction de déchets solides ou transformation de déchets solides en quelque chose d'utile ou d'inoffensif impliquant un rayonnement, p. ex. des ondes électromagnétiques
79.
PREPARATION METHOD FOR FLAKY IRON PHOSPHATE AND PREPARATION METHOD FOR FLAKY LITHIUM IRON PHOSPHATE
Disclosed are a preparation method for flaky iron phosphate and a preparation method for flaky lithium iron phosphate. According to the present disclosure, electrical pulses are introduced during the preparation of iron phosphate, so that the reaction rate during iron phosphate synthesis can be controlled, and impurity ions entrained during iron phosphate precipitation can be reduced; in addition, flaky iron phosphate can be obtained, and then flaky lithium iron phosphate having good electrochemical performance is obtained; furthermore, the presence of the electrical pulses is beneficial to generating flaky iron phosphate having a smaller size and improving the density of iron phosphate, thereby improving the electrochemical performance of lithium iron phosphate which serves as a positive electrode material.
C01B 25/45 - Phosphates contenant plusieurs métaux ou un métal et l'ammonium
H01M 4/58 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de composés inorganiques autres que les oxydes ou les hydroxydes, p. ex. sulfures, séléniures, tellurures, halogénures ou LiCoFyEmploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de structures polyanioniques, p. ex. phosphates, silicates ou borates
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p. ex. batteries à insertion ou intercalation de lithium dans les deux électrodesBatteries à l'ion lithium
80.
METHOD FOR EXTRACTING FLUORINE FROM NICKEL-COBALT-MANGANESE SULFATE SOLUTION
The present application relates to the field of wastewater treatment, and discloses a method for extracting fluorine from a nickel-cobalt-manganese sulfate solution. The method comprises the following steps: mixing a nickel-cobalt-manganese sulfate solution and concentrated sulfuric acid for activation; carrying out multi-stage countercurrent extraction on the activated liquid by means of an organic phase, wherein the organic phase comprises tributyl phosphate, isooctyl alcohol, and a diluent; carrying out multistage countercurrent washing on the fluorine-containing organic phase; and carrying out multi-stage countercurrent stripping on the washed fluorine-containing organic phase. According to the present application, for extraction of fluorine in a nickel-cobalt-manganese sulfate solution, tributyl phosphate is used as the extractant, and isooctyl alcohol is added to improve phase separation in a mixer-settler; the process steps are simple and the extraction rate is as high as 90% or above.
The present application discloses a method for preparing ferric phosphate, including the following steps: mixing a surfactant with a first metal liquid containing iron and phosphorus elements, adding with adding seed crystal, aging under heating and stirring, filtering the aged solution to obtain a filter residue, and drying and sintering the filter residue, thereby obtaining the ferric phosphate; the seed crystal is ferric phosphate dihydrate or basic ammonium ferric phosphate. In the present application, the surfactant is used for modification of the seed crystal, secondary crystal nucleus is generated, which induces the formation of the basic framework of the product particles. Through the aging process, the deposition of the crystal nucleus on the surface of the seed crystal makes the framework of the crystal grain more complete, so that the primary particles are arranged more densely and orderly and tend to constitute spherical secondary particles.
A high-voltage ternary positive electrode material includes ternary positive electrode active material particles and a flexible coating body, the flexible coating body being coated on surfaces of the ternary positive electrode active material particles; wherein, the flexible coating body includes a mixture of polyaniline and a polyurethane elastomer.
H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p. ex. LiNiO2, LiCoO2 ou LiCoOxFy
H01M 4/62 - Emploi de substances spécifiées inactives comme ingrédients pour les masses actives, p. ex. liants, charges
H01M 10/42 - Procédés ou dispositions pour assurer le fonctionnement ou l'entretien des éléments secondaires ou des demi-éléments secondaires
83.
METHOD FOR RECYCLING AND TREATING ELECTROLYTIC SOLUTION OF LITHIUM ION BATTERY
A method for recycling and treating an electrolytic solution of a lithium ion battery includes S1: cooling a fully discharged lithium ion battery below a freezing point of the electrolytic solution, and then disassembling and crushing the lithium ion battery to obtain a crushed solid containing the electrolytic solution, S2: under a protection of an inert gas, placing the crushed solid in a supercritical CO2 extraction instrument in which an entrainer is added; S3: conducting extraction; and S4: collection an extraction product with a cryogenic device, and adsorbing water in the extraction product using a 4 Å type lithiated molecular sieve, adsorbing HF in the extraction product using weak-base anion-exchange resin and adsorbing organic acid and alcohol in the extraction product using a 5 Å type lithiated molecular sieve.
B01D 15/34 - Séparation par sélection en fonction de la taille, p. ex. chromatographie d'exclusion de tailleFiltration sur gelPerméation
B01D 15/36 - Adsorption sélective, p. ex. chromatographie caractérisée par le mécanisme de séparation impliquant une interaction ionique, p. ex. échange d'ions, paire d'ions, suppression d'ions ou exclusion d'ions
B09B 3/80 - Destruction de déchets solides ou transformation de déchets solides en quelque chose d'utile ou d'inoffensif impliquant une étape d'extraction
Doped cobaltosic oxide and a preparation method therefor. According to the method, a pre-oxidation process is used in combination with specific processing additives to prepare the product, such that the "sticking to a furnace" phenomenon can be effectively alleviated. In addition, the product prepared has high particle uniformity and is free of obvious cracking, a doping element has a gradient distribution, and a lithium cobalt oxide material prepared has good electrochemical performance. The method makes full-chain integrated production of doped cobaltosic oxide in the field of lithium batteries possible.
c1-dde2-ea1-bbf2-f2-f, the M element being a doping element, the Q element being a wrapping element, the T element being a doping element, and the E element being a wrapping element. By matching large and small particles of lithium cobalt oxide, an oxygen reduction reaction between an electrolyte and the surface of a positive electrode material can be inhibited, Co valence state changes in the positive electrode material are inhibited, Co dissolution is reduced, the capacity is increased, and the storage and gas production performance of a lithium cobalt oxide positive electrode material are improved.
H01M 4/485 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques d'oxydes ou d'hydroxydes mixtes pour insérer ou intercaler des métaux légers, p. ex. LiTi2O4 ou LiTi2OxFy
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p. ex. LiNiO2, LiCoO2 ou LiCoOxFy
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p. ex. batteries à insertion ou intercalation de lithium dans les deux électrodesBatteries à l'ion lithium
86.
METHOD FOR PREPARING SODIUM HYDROXIDE ON BASIS OF SODIUM SULFATE WASTEWATER GENERATED DURING LITHIUM BATTERY RECOVERY
A method for preparing sodium hydroxide on the basis of sodium sulfate wastewater generated during lithium battery recovery. The method comprises the following steps: adding a calcium oxide powder to sodium sulfate wastewater, and mixing and reacting same, so as to obtain a mixed reaction solution; filtering the mixed reaction solution, so as to obtain a reaction mother solution; subjecting the reaction mother solution to a nanofiltration operation, so as to obtain a sodium hydroxide solution and a concentrated sodium sulfate solution; subjecting the sodium hydroxide solution to a reverse osmosis operation, so as to obtain the sodium hydroxide solution; subjecting the sodium hydroxide solution, which has undergone the reverse osmosis, to an electrodialysis operation, so as to obtain the sodium hydroxide solution; and subjecting the sodium hydroxide solution, which has undergone the electrodialysis, to an evaporation and concentration operation, so as to obtain the sodium hydroxide solution.
Disclosed are a method for synthesizing a ternary precursor under assistance of electric pulses and a use. According to the present disclosure, under the action of electric pulses, a coprecipitation reaction slows down the growth speed of a crystal nucleus without using a complexing agent, so that the obtained crystal grains are finer, and have higher sphericity; and the presence of the electric pulses in the aging process can also make the growth of the crystal grains more uniform and denser.
A fouled material treatment method. The method comprises: using sulfuric acid to carry out first leaching treatment on a fouled device to be treated; and using mixed acid to carry out second leaching treatment on the fouled device that has been subjected to the first leaching treatment, wherein the mixed acid comprises phosphoric acid and other acids, and the other acids do not contain any one of hydrochloric acid, nitric acid, oxalic acid, and hydrofluoric acid. The method consumes a short time, has a good fouled material removal effect and low cost, would not cause serious corrosion to devices, can implement recycling of leachates, and can be widely used for the cleaning of fouled materials in different devices.
A method for measuring the content of tricobalt tetraoxide in lithium cobalt oxide, relating to the technical field of quantitative measurement of tricobalt tetraoxide. The method comprises the following steps: carrying out acid treatment on a lithium cobalt oxide sample to be tested to dissolve lithium cobalt oxide, and then carrying out solid-liquid separation, reacting the solid obtained by separation with a potassium permanganate solution and a sulfuric acid solution, adding a potassium iodide solution to end the reaction, and titrating to an end point with a sodium thiosulfate solution by taking starch as an indicator. By means of the method, a measurement result having high accuracy can be obtained.
G01N 21/78 - Systèmes dans lesquels le matériau est soumis à une réaction chimique, le progrès ou le résultat de la réaction étant analysé en observant l'effet sur un réactif chimique produisant un changement de couleur
The present disclosure relates to the technical field of salt lake lithium extraction and recovery, and in particular to a method for extracting lithium from a salt lake by using a flow electrode, and a device for extracting lithium from a salt lake. By using a flow electrode slurry mixed with a lithium intercalation/deintercalation active material as a lithium ion electric deintercalation carrier, using a flow electrode slurry mixed with a calcium intercalation/deintercalation active material as a calcium ion electric deintercalation carrier, and incorporating an electrochemical principle, salt lake lithium extraction is carried out, and in the process of lithium intercalation, Ca2+and Mg2+ generate a competitive effect when entering a flow electrode, so that magnesium ions do not easily enter a lithium-intercalated slurry by means of an ion exchange membrane, thereby inhibiting the intercalation of the magnesium ions into the lithium intercalation/deintercalation active material; and in a lithium intercalation/deintercalation system, the electrode potential of calcium ions is significantly different from that of lithium ions, so that the calcium ions cannot be intercalated into the lithium intercalation/deintercalation active material. Therefore, the method provided by the present disclosure can effectively separate lithium and magnesium, thereby improving the purity of recovered lithium.
The present disclosure relates to the technical field of battery material preparation, and in particular to a preparation method for a large-particle cobaltosic oxide, comprising the following steps: mixing a cobalt salt solution with a carbonate-containing precipitant solution A, performing solid-liquid separation after reaction, taking solid phase substances, and drying and crushing to obtain amorphous nano cobalt carbonate; mixing a cobalt salt solution with a carbonate-containing precipitant solution B and a carbonate-containing precipitant solution C, generating cobalt carbonate particles after reaction, then adding the amorphous nano cobalt carbonate for reaction to obtain a reaction solution containing a cobalt carbonate matrix coated with the amorphous nano cobalt carbonate; and adding a hydroxyl-containing precipitant solution D into the reaction solution, adding the cobalt salt solution and the precipitant solution D, generating mixed particles after reaction, then performing solid-liquid separation, taking solid phase substances to obtain a cobalt carbonate/cobalt hydroxide mixture, performing primary sintering and then mixing with the amorphous nano cobalt carbonate, and performing secondary sintering to obtain a large-particle cobaltosic oxide.
A coated and modified lithium cobalt oxide, and a preparation therefor and the use thereof. By coating the surface of lithium cobalt oxide with Na, Ni, a rare earth metal and P, the cycling performance and initial efficiency of a lithium cobalt oxide positive electrode material can be improved under a relatively high voltage of 4.2 V or higher, and the comprehensive performance of the material can be improved; moreover, Na and the rare earth metal serving as dual pillars can maintain the structural stability of the surface layer of the material, and the synergistic effect of a sodium salt coating layer and a composite coating layer is more conducive to an improvement in the cycling performance of the material.
H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p. ex. LiNiO2, LiCoO2 ou LiCoOxFy
H01M 4/58 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de composés inorganiques autres que les oxydes ou les hydroxydes, p. ex. sulfures, séléniures, tellurures, halogénures ou LiCoFyEmploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de structures polyanioniques, p. ex. phosphates, silicates ou borates
H01M 4/1391 - Procédés de fabrication d'électrodes à base d'oxydes ou d'hydroxydes mixtes, ou de mélanges d'oxydes ou d'hydroxydes, p. ex. LiCoOx
93.
METHOD FOR COATING LITHIUM NICKEL COBALT MANGANESE OXIDE CATHODE MATERIAL
The present disclosure discloses a method for coating a lithium nickel cobalt manganese oxide cathode material, and relates to the technical field of the synthesis of cathode materials. The present disclosure provides a method for coating a lithium nickel cobalt manganese oxide cathode material, comprising the following steps: (1) mixing the lithium nickel cobalt manganese oxide cathode material with a potassium permanganate solution, and introducing an olefin; and (2) after a reaction is completed, a reaction product is dried and calcinated to obtain a manganese-dioxide-coated lithium nickel cobalt manganese oxide cathode material; wherein the number of carbon atoms in the olefin is ≤10, and the number of carbon-carbon double bonds in the olefin is 1. By introducing an olefin when mixing a lithium nickel cobalt manganese oxide cathode material with a potassium permanganate solution, directed coating of surface defects is realized.
H01M 4/02 - Électrodes composées d'un ou comprenant un matériau actif
H01M 4/505 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de manganèse d'oxydes ou d'hydroxydes mixtes contenant du manganèse pour insérer ou intercaler des métaux légers, p. ex. LiMn2O4 ou LiMn2OxFy
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p. ex. LiNiO2, LiCoO2 ou LiCoOxFy
94.
NICKEL-COBALT-ALUMINUM TERNARY POSITIVE ELECTRODE MATERIAL PRECURSOR, AND PREPARATION METHOD THEREFOR AND USE THEREOF
The present application belongs to the technical field of lithium ion batteries. Disclosed are a nickel-cobalt-aluminum ternary positive electrode material precursor, and a preparation method therefor and the use thereof. The preparation method for the nickel-cobalt-aluminum ternary positive electrode material precursor comprises the following steps: (1) adding a nickel source, a cobalt source and an aluminum source into deionized water to prepare a mixed solution, adding a complexing agent and a precipitant into the mixed solution for a reaction, carrying out solid-liquid separation, and performing drying to obtain a solid product; and (2) adding the solid product into a modified graphene paste, and carrying out primary ball milling, hydrothermal reaction, secondary ball milling, drying and crushing to obtain the nickel-cobalt-aluminum ternary positive electrode material precursor, the modified graphene paste comprising the following components: a fluorine-containing silane coupling agent, a soluble boron-containing compound, a surfactant, graphene and absolute ethyl alcohol. The prepared nickel-cobalt-aluminum ternary positive electrode material precursor has good structural stability and consistency, thereby remarkably improving the electrical properties and cycle performance of lithium ion batteries.
The present application relates to the technical field of battery recovery. Disclosed is a method for recovering valuable metals from a lithium-ion battery. In the present application, waste rubber particles are used as a fuel and a reducing agent, and after the waste rubber particles and a lithium-ion battery electrode powder are mixed and granulated, primary roasting and pyrolysis and secondary roasting and pyrolysis are conducted; a gas generated by the waste rubber particles has a relatively high heat value, also has an extremely high reducibility, and can reduce a ternary lithium battery electrode powder into soluble lithium oxide; lithium metal can be recovered by means of water leaching, and therefore a metal recovery rate is high and the energy consumption is low; and since the waste rubber particles are used, the resource recycling rate can be increased, and the method is economical and environmentally friendly.
An integrated extraction system and a control method therefor. The integrated extraction system comprises at least an extraction tank and a controller, wherein a first speed reducer (3) for adjusting the stirring of a stirrer and a second speed reducer (6) for adjusting the vertical movement of an aqueous-phase regulating tube are at least mounted in the extraction tank, the stirrer being arranged in a mixing tank (4) of the extraction tank, and the aqueous-phase regulating tube being arranged in a clarification tank (5) of the extraction tank; and the controller is configured to obtain a feed flow rate of the extraction tank, solution information of the clarification tank (5), and the stirring frequency of the stirrer, and perform PID control over the feed flow rate, the stirring frequency, and the position of the aqueous-phase regulating tube on the basis of the feed flow rate, the solution information and the stirring frequency. In this way, it is possible to realize automatic control of the extraction tank, reduce the interference of human factors, and improve the production line stability.
METHOD FOR RECOVERING NICKEL, COBALT, MANGANESE, LITHIUM, AND NEGATIVE ELECTRODE GRAPHITE FROM TERNARY LITHIUM BATTERY BY MEANS OF HIGH-PRESSURE REDUCTION
A method for recovering nickel, cobalt, manganese, lithium, and negative electrode graphite from a ternary lithium battery by means of high-pressure reduction, comprising the following steps: carrying out low-acid leaching on waste battery powder, mixing low-acid leaching residues obtained after solid-liquid separation with an alkaline solution to make a slurry, carrying out high-pressure leaching on roasting residues obtained after primary roasting of the slurry, and carrying out secondary roasting on high-pressure leaching residues obtained after solid-liquid separation, thereby obtaining battery-grade graphite powder.
C22B 7/00 - Mise en œuvre de matériaux autres que des minerais, p. ex. des rognures, pour produire des métaux non ferreux ou leurs composés
C22B 3/06 - Extraction de composés métalliques par voie humide à partir de minerais ou de concentrés par lixiviation dans des solutions inorganiques acides
The present invention provides a method for removing PVDF and aluminum from a lithium iron phosphate positive electrode material, comprising the following steps: S1: performing mixing and ball-milling on lithium iron phosphate powder, a first ionic liquid, and ethanol, and performing solid-liquid separation to obtain PVDF-removed lithium iron phosphate powder; and S2: mixing and heating alcohol, a second ionic liquid, and the PVDF-removed lithium iron phosphate powder prepared in step S1, and separating alcohol and aluminum alkoxide to obtain PVDF-removed and aluminum-removed lithium iron phosphate powder, wherein the first ionic liquid and the second ionic liquid in steps S1 and S2 are independently selected from a fluorine-containing ionic liquid.
H01M 10/54 - Récupération des parties utiles des accumulateurs usagés
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p. ex. batteries à insertion ou intercalation de lithium dans les deux électrodesBatteries à l'ion lithium
H01M 4/58 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de composés inorganiques autres que les oxydes ou les hydroxydes, p. ex. sulfures, séléniures, tellurures, halogénures ou LiCoFyEmploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de structures polyanioniques, p. ex. phosphates, silicates ou borates
99.
METHOD FOR FULL-CHAIN INTEGRATED REGENERATION OF WASTE LITHIUM IRON PHOSPHATE POSITIVE ELECTRODE SHEETS, AND REGENERATED LITHIUM IRON PHOSPHATE POSITIVE ELECTRODE SHEET
A method for regeneration of waste lithium iron phosphate positive electrode sheets, and a regenerated lithium iron phosphate positive electrode sheet. By means of an electrochemical mode, the method enables lithium iron phosphate to be regenerated without any damage to the structure thereof; the method avoids the discharge of acid-alkali wastewater in large quantities during a wet recovery process, and also avoids the problem of reduced activity of lithium iron phosphate due to the lattice changes in the lithium iron phosphate caused by aerobic calcination during a pyrogenic recovery process; moreover, the process is simple, lithium iron phosphate does not need to be stripped from positive electrode sheets, a positive electrode sheet is directly obtained after regeneration, and a binder, a conductive agent, etc., in the positive electrode sheet do not need to be additionally replenished; and the performance of a regenerated lithium iron phosphate positive electrode material is equivalent to that of the initially prepared lithium iron phosphate positive electrode material.
H01M 10/54 - Récupération des parties utiles des accumulateurs usagés
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p. ex. batteries à insertion ou intercalation de lithium dans les deux électrodesBatteries à l'ion lithium
C25C 1/02 - Production, récupération ou affinage électrolytique des métaux par électrolyse de solutions des métaux légers
100.
LITHIUM COBALT OXIDE POSITIVE ELECTRODE MATERIAL, PREPARATION METHOD THEREFOR AND USE THEREOF
A lithium cobalt oxide positive electrode material, a preparation method therefor and the use thereof. The positive electrode material comprises large particles and small particles. The large particles have a lower content of nickel and manganese; a small amount of the nickel element increases the capacity and a small amount of manganese stabilizes the structure; the presence of nickel and manganese inhibits cobalt dissolution to a certain degree, thus improving battery storage; additionally, the slight doping of nickel and manganese enhances intrinsic properties and allows the large particles to normally grow, thus improving the compaction density of an electrode sheet and ensuring the compression resistance. The small particles have a higher content of nickel and manganese; since the small particles have a small size and a larger BET, small particles are likely to grow into quasi-single crystals, so that compared with the slight doping of nickel and manganese, the presence of higher amounts of nickel and manganese is more beneficial for improving the storage and gas generation properties while improving the battery capacity.
H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p. ex. LiNiO2, LiCoO2 ou LiCoOxFy
