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
4.
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
5.
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
An order-to-disorder transformed spinel phase lithium nickel manganese oxide material, a preparation method therefor and a use thereof. A matrix of the spinel phase lithium nickel manganese oxide material is primarily based on an ordered spinel phase, but the surface of the matrix is a surface layer primarily based on a disordered spinel phase. Moreover, there is also a doping element for increasing the degree of disorder and/or promoting single crystallization in the matrix. By introducing the doping element, the content of trivalent manganese in the matrix is increased, so that the internal degree of disorder is increased on the basis of the ordered spinel phase; moreover, single crystal particles of the order-to-disorder transformed spinel phase lithium nickel manganese oxide material are at the micron level, and said material has a small specific surface area and excellent capacity. The surface layer primarily based on the disordered spinel phase can further improve the capacity, cycle performance and rate capability of the order-to-disorder transformed spinel phase lithium nickel manganese oxide material, so that said material has great advantages in subsequent material coating. The order-to-disorder transformed spinel phase lithium nickel manganese oxide material can be widely used in preparation of lithium battery positive electrodes.
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
7.
FULL-CHAIN INTEGRATED METHOD FOR RECYCLING LITHIUM FROM BATTERY AND STORING CARBON DIOXIDE
Disclosed herein is a full-chain integrated method for recycling lithium from a battery and storing carbon dioxide. The method comprises the following steps: carrying out electrochemical lithium extraction by using an electrolytic tank, and introducing a gas containing carbon dioxide and hydrogen fluoride into a cathode chamber solution of the electrolytic tank, such that a lithium fluoride precipitate is obtained in an anode chamber, and carbonate wastewater is obtained in the cathode chamber, wherein the electrolytic tank comprises a lithium-rich battery material anode, a lithium-deficient battery material cathode, a monovalent anion exchange membrane, the cathode chamber solution and an anode chamber solution, and the cathode chamber and the anode chamber are separated by using the monovalent anion exchange membrane.
A positive electrode material, and a preparation method therefor and the use thereof. The positive electrode material comprises a substrate material and a coating layer arranged on the surface of the substrate material, wherein a bulk phase of the substrate material is doped with metal M, the near-surface layer of the substrate material is doped with Na in a gradient decreasing mode from outside to inside, and the coating layer comprises a perovskite-structure oxide containing metal Me. The coating layer comprises Me, O and La elements, and a substrate is subjected to bulk phase and near-surface layer gradient doping by using doping elements of specific types and contents, and is subjected to surface coating by using perovskite, such that the problem of structure deterioration under high voltages can be solved, and the gas production of a battery can be improved.
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 4/505 - 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 4/485 - 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
9.
LITHIUM ION BATTERY POSITIVE ELECTRODE MATERIAL, PREPARATION METHOD AND USE
A lithium ion battery positive electrode material, a preparation method and the use. By means of adjustment and optimization of doping elements, the doping amount and the parameters of a preparation process, single crystal or single crystal-like particles are obtained, so as to reduce micro-cracks, and reduce side reactions at interfaces, thus obtaining a lithium-cobalt oxide having good storage performance, cycle performance and gas evolution performance at voltages of 4.50V or above and suitable for the field of power batteries.
H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
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 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
10.
SINGLE-CRYSTAL LITHIUM-RICH MANGANESE-BASED POSITIVE ELECTRODE MATERIAL AND PREPARATION METHOD THEREFOR, AND BATTERY
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 4/485 - 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
Provided is a multi-component separation system for battery crushing and recycling. The system comprises: a first screening mechanism (1), which is used for pre-screening treatment of materials after high-temperature pyrolysis; a secondary crusher (2), which is connected to the first screening mechanism and used for initial crushing treatment of the materials that have been screened out by the first screening mechanism and do not meet the requirements; a second screening mechanism (3), which is connected to the secondary crusher and used for screening treatment of the materials that have been crushed by the secondary crusher; a fine crusher (4), which is connected to the second screening mechanism and used for fine crushing treatment of the materials that have been screened out by the second screening mechanism and do not meet the requirements; a third screening mechanism (5), which is connected to the fine crusher and used for screening treatment of the materials that have been crushed by the fine crusher; and a specific gravity separator (6), which is used for separation treatment of the materials that have been screened out by the third screening mechanism and do not meet the requirements. Further provided is a multi-component separation method for battery crushing and recycling. According to the multi-component separation system and method, through the cooperation of multi-stage screening and multi-stage crushing, the battery crushing and recycling utilization rate is effectively improved.
A CTP battery pack disassembly method, comprising: performing a pre-treatment operation on a CTP battery pack to remove an upper cover, an electric control module, and a shielding accessory; performing a discharge operation on the CTP battery pack after the pre-treatment operation on same has been completed; performing an automatic cut-off operation on a busbar connected between two adjacent battery cells in the CTP battery pack; performing a heating operation on a bottom portion of the CTP battery pack; performing a turnover operation on the CTP battery pack after the heating operation on same has been completed; and performing a vibration operation on the CTP battery pack after the turnover operation on same has been completed, to separate each battery cell from the inside of the CTP battery pack. The above-described CTP battery pack disassembly method enables the efficiency of disassembly by workers to be high during disassembly of a CTP battery pack, while also enabling good safety of the workers during disassembly of the CTP battery pack.
An underwater crushing and recovery system for lithium batteries, comprising a dual-shaft shredder (2). An inner cavity of the dual-shaft shredder (2) is located in a water reservoir (4), and the inner cavity of the dual-shaft shredder (2) is in communication with the water reservoir (4). The water reservoir (4) communicates with a circulating water tank by means of a circulating water pump (11). A material discharging position below the dual-shaft shredder (2) communicates with the circulating water tank by means of a first screw conveyor (3). In the system, lithium batteries are conveyed by means of a belt conveyor into the dual-shaft shredder to undergo preliminary crushing, during which the lithium batteries are covered in water, thereby avoiding the situation in which a large number of crushed particles go flying during crushing of the batteries, and effectively preventing the crushing process from polluting the environment in which processing equipment is located, which would in turn lead to affected environmental safety. Moreover, the crushing cavity of the dual-shaft shredder is arranged within the water reservoir, and dilution of an electrolyte solution with water in the water reservoir causes the batteries to fail, which avoids the generation of sparks from battery crushed particles and the combustion of same resulting from short-circuiting of some of the batteries during crushing, and which can effectively protect environmental safety.
A positive electrode material containing a nano aluminum oxide coating layer and a preparation method for the positive electrode material. The method comprises the following steps: adding an aluminum source and a carbon source into a solvent to obtain a dispersion system; adding a positive electrode material into the dispersion system, stirring and carrying out a reaction to obtain a gel; drying the gel and sintering in an inert atmosphere to obtain a precursor; and carrying out heat treatment on the precursor in an oxidizing atmosphere to obtain a positive electrode material containing a nano aluminum oxide coating layer.
H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
H01M 4/48 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques
H01M 4/46 - Alliages à base de magnésium ou d'aluminium
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 fiber ball filter, comprising: a double-layer pressing plate assembly (3), comprising a first pressing plate (31) and a second pressing plate (32) arranged in sequence. First water-permeable holes (33) are formed in the first pressing plate (31), and second water-permeable holes (34) are formed in the second pressing plate (32). A lifting/lowering control assembly (4) is used for controlling the double-layer pressing plate assembly (3) to move up and down so as to be switched between a working position and a flushing position. The working position is the position of the double-layer pressing plate assembly (3) when a fiber ball filtering member is pressed, and the flushing position is the position of the double-layer pressing plate assembly (3) when the backwashing expansion rate of the fiber ball filtering member is a first preset proportion. A rotation control assembly (5) is connected to the first pressing plate (31), and controls the rotation to adjust the area of the overlapping portion of the first water-permeable holes (33) and the second water-permeable holes (34). According to the fiber ball filter, the backwashing effect of the fiber ball filtering member can be improved, the fiber ball filtering member is prevented from being damaged during backwashing, and the present invention solves the problems of fiber balls being prone to being bonded during lifting of the pressing plates after backwashing of the fiber ball filtering member, and non-uniform distribution of the fiber balls when the fiber ball filtering materials are pressed again.
B01D 24/04 - Filtres à substance filtrante non agglomérée, c.-à-d. à substance filtrante sans aucun liant entre les particules ou les fibres individuelles qui la composent avec le lit filtrant stationnaire pendant la filtration la substance filtrante étant calée entre des parois perméables fixes
B01D 24/06 - Filtres à substance filtrante non agglomérée, c.-à-d. à substance filtrante sans aucun liant entre les particules ou les fibres individuelles qui la composent avec le lit filtrant stationnaire pendant la filtration la substance filtrante étant calée entre des parois perméables fixes les parois perméables comprenant une série de jalousies ou de fentes
B01D 24/46 - Régénération de la substance filtrante dans le filtre
16.
METHOD OF PREPARING HARD CARBON ANODE MATERIAL AND USE THEREOF
The present invention discloses a method of preparing a hard carbon anode material and use thereof. Starch is mixed with nano-silica, the obtained mixture is heat treated at 150° C. to 240° C. under an inert atmosphere, the obtained first-sintered product is heat treated at 180° C. to 220° C. under an oxygen-containing atmosphere, the second-sintered product is cyclonically separated to remove nano-silica to obtain pre-oxidized starch-based microspheres, and the pre-oxidized starch-based microspheres are performed carbonization treatment under an inert atmosphere to obtain the hard carbon anode material. In the present invention, the silica particles can be adsorbed on the surface of the starch raw material, and cross-linking occurs between the starch molecular chains during the heat treatment process, and under the barrier of the silicon dioxide, the starch particles will not be cross-linked but fused to form a spherical structure. The introduction of oxygen atoms during the pre-oxidation process produces oxygen vacancy and increases the active sites for sodium ion storage after carbonization, thus increasing the reversible capacity of sodium ion batteries.
Provided in the present invention are a decommissioned-traction-battery screening method and system taking carbon emission into consideration. The decommissioned-traction-battery screening method comprises: in response to an input operation of a client, acquiring the carbon emission of each decommissioned traction battery within a current boundary range before decommission; acquiring state-of-health parameters of the decommissioned traction batteries by means of charging and discharging; on the basis of the carbon emission and the state-of-health parameters, classifying the decommissioned traction batteries into several categories; and on the basis of the classification result, determining a disposal mode for each decommissioned traction battery, wherein the disposal mode comprises cascade use and dismantling for recycling. In the present application, state-of-health parameters and the carbon emission of decommissioned traction batteries are taken into consideration during a screening process, and on the basis of the state-of-health parameters and the carbon emission, the batteries are classified into categories, so as to advise the disposal mode of the batteries. Thus, the overall carbon emission of the batteries in the life cycle thereof can be effectively controlled, and the production of a relatively large amount of carbon emissions during the process of cascade use or dismantling for recycling is avoided.
A water-isolated and oxygen-free crushing device for lithium batteries, comprising a shredder (2) arranged in a water storage tank (1), a driving electric motor (21) for the shredder (2) being provided on the outer wall of the water storage tank (1), and the shredder (2) is located below a water level line of the water storage tank (1); and a discharging machine (3) arranged at the bottom in the water storage tank (1), the bottom of the water storage tank (1) being in communication with a circulating water tank by means of a conveying device (11). In the device, the shredder is arranged in the water storage tank, so as to prevent electrolyte from leaking and control the reaction of batteries by means of crushing wrapped in water. Batteries are shredded in water by means of the shredder, the shredded batteries are classified into sinking materials such as battery shells and tabs, and floating materials such as electrode plates and films, and the shredded materials can be delivered to the next process by means of a discharging machine; and the conveying device is also arranged at the bottom of the water storage tank to realize water circulation between the water storage tank and the circulating water tank, and some crushed slag materials can also be conveyed to the circulating water tank for sedimentation and separation.
B09B 3/30 - Destruction de déchets solides ou transformation de déchets solides en quelque chose d'utile ou d'inoffensif impliquant un traitement mécanique
Disclosed is a preparation method for a high-nickel ternary cathode material, including the steps of mixing a LiOH powder with a high-nickel ternary precursor according to a molar ratio of (0.6 to 0.95):1, performing primary sintering in an oxygen atmosphere, adding a metal oxide into a LiOH solution to obtain a mixed solution, mixing the mixed solution with a primary-sintered material in a protective atmosphere, drying and crushing a mixed material, performing secondary sintering on a powder material, spraying an atomized boric acid alcohol solution onto a secondary-sintered material, and then tempering to obtain the high-nickel ternary cathode material.
A method for improving cyclic rising of a battery, and a lithium ion battery. The method comprises: using a preset charging current to carry out constant-current constant-voltage charging on a battery to be tested until the voltage of said battery reaches a rated voltage, and the current of said battery reaches a target cutoff current (S110); and sequentially carrying out constant-current discharging on said battery twice, wherein a method for carrying out constant-current discharging on said battery comprises: standing said battery for a first preset duration; and when standing is finished, carrying out constant-current discharging on said battery until the voltage of said battery reaches a preset cutoff voltage (S120).
H01M 10/48 - Accumulateurs combinés à des dispositions pour mesurer, tester ou indiquer l'état des éléments, p. ex. le niveau ou la densité de l'électrolyte
21.
AEROGEL INTERFACIAL PHOTOTHERMAL EVAPORATION MATERIAL, AND PREPARATION METHOD THEREFOR AND USE THEREOF
An aerogel interfacial photothermal evaporation material, and a preparation method therefor and the use thereof. The aerogel interfacial photothermal evaporation material comprises graphene, a carbonized ternary precursor and oxide nanoparticles, wherein the graphene coats the surface of the carbonized ternary precursor, and the oxide nanoparticles are loaded on the surface of the carbonized ternary precursor coated with the graphene.
B01J 13/00 - Chimie des colloïdes, p. ex. production de substances colloïdales ou de leurs solutions, non prévue ailleursFabrication de microcapsules ou de microbilles
C09K 5/14 - Substances solides, p. ex. pulvérulentes ou granuleuses
C02F 1/14 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par chauffage par distillation ou évaporation utilisant l'énergie solaire
C02F 103/08 - Eau de mer, p. ex. pour le dessalement
22.
PREPARATION METHOD FOR AND USE OF IRON PHOSPHATE MATERIAL
44 material. By using a ferrate to oxidize organic phosphorus, the ferrate itself is reduced into ferric iron, and provides an iron source and also serves as an oxidizing agent; by introducing humic acid during the oxidation process, a competitive oxidation relationship with the organic phosphorus is formed; the ferrate is activated into an iron-based intermediate having higher oxidizability; and after the humic acid is oxidized, the electronegativity is enhanced, such that iron ions can be adsorbed to play a dispersing role, thereby preventing the generated iron phosphate from being agglomerated, such that the particle size thereof is uniform, which is conductive to improving the electrical properties of the subsequently prepared lithium iron phosphate.
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
23.
METHOD FOR RECYCLING POSITIVE ELECTRODE MATERIAL OF WASTE LITHIUM BATTERY BY MEANS OF HIGH-VOLTAGE PULSES
A method for recycling a positive electrode material of a waste lithium battery by means of high-voltage pulses. The method comprises: crushing a waste positive electrode sheet under the synergistic effect of high-voltage pulses and ultraviolet irradiation, wherein a positive electrode material in the waste positive electrode sheet comprises a positive electrode material matrix and a coating layer that is coated on the positive electrode material matrix, and the coating layer comprises titanium dioxide. As the waste positive electrode sheet is crushed by means of the synergism of high-voltage pulses and ultraviolet irradiation, the positive electrode material coated with titanium dioxide can be effectively stripped from a positive electrode current collector, and the stripping rate is significantly improved; and the content of aluminum in the stripped positive electrode material is very low.
A preparation method for a hard carbon negative electrode material. The method comprises the following steps: uniformly mixing a polymer material and a cross-linking agent, so as to obtain a mixture; placing the mixture in an oxygen-free environment and performing primary calcination, so as to obtain a precursor; placing the precursor in an oxygen-containing environment and performing secondary calcination, so as to obtain a modified precursor; and placing the modified precursor in an oxygen-free environment and performing third calcination, so as to obtain a hard carbon negative electrode material. By mixing the polymer material and the cross-linking agent, carrying out primary calcination to achieve cross-linking among polymers, carrying out secondary calcination to introduce an oxygen-containing functional group, and carrying out tertiary calcination and a pore closing treatment, the prepared hard carbon has a disordered interlayer structure, which is beneficial for the intercalation/deintercalation of sodium ions, thereby exhibiting a relatively high reversible capacity and first charge-discharge efficiency. The prepared hard carbon negative electrode material is further applied to a negative electrode of a sodium-ion battery.
A short-process lithium extraction method for a lithium clay ore. The method comprises the following steps: calcining the lithium clay ore to obtain a cured material; dissolving the cured material, concentrated sulfuric acid and an alkali metal sulfate in pure water to perform a hydrothermal reaction, and filtering same to obtain a leachate; adsorbing the leachate with a calcium-magnesium-removal resin column for impurity removal, so as to obtain an impurity-removed solution; and adding a saturated sodium carbonate solution to the impurity-removed liquid, and filtering same to obtain lithium carbonate filter residues. By means of a pressure leaching method, the lithium leaching rate is increased, and Al3+34222 (where X is Na or K). The alunite is insoluble in water and slightly soluble in sulfuric acid, has relatively good crystallinity, less adsorption entrainment of free ions, and almost no lithium entrainment. By using this characteristic of alunite, Al3+ dissolved out from the lithium ore by acid is converted into an alunite precipitate, thereby reducing the Al/Li ratio of the leachate; in addition, a small amount of calcium and magnesium ions are adsorbed by using the calcium-magnesium-removal resin, and finally lithium is collected in the form of lithium carbonate.
A method for preparing a modified nano-tricobalt tetraoxide. The method comprises the following steps: preparing a cobalt salt solution, an alkali solution and a sintering aid; introducing an inert gas into a reaction kettle to replace air in the reaction kettle, such that a reaction is performed in the inert atmosphere, adding the cobalt salt solution and the alkali solution, and mixing and reacting same, so as to obtain a nano-cobalt hydroxide slurry having a water content of 85-90 wt%; subjecting the nano-cobalt hydroxide slurry to filter pressing, so as to obtain a press-dried nano-cobalt hydroxide slurry having a water content of 60-70 wt%; drying the press-dried nano-cobalt hydroxide slurry, so as to obtain a dried nano-cobalt hydroxide slurry having a water content of less than 10 wt%; and oxidizing and crushing the dried nano-cobalt hydroxide slurry, and mixing and modifying same with the sintering aid, so as to obtain modified nano-tricobalt tetraoxide having a water content of less than 1 wt% and a D50 of less than 1 μm. The water content of the nano-cobalt hydroxide slurry is reduced in gradient by means of the two steps of filter pressing and drying; and the sintering temperature is reduced by taking the sintering aid as a catalyst.
The present invention belongs to the technical field of lithium battery preparation. Disclosed is a method for synthesizing a lithium manganese iron phosphate material coated with discontinuous vapor deposition carbon. The method for synthesizing the discontinuous vapor deposition carbon-coated lithium manganese iron phosphate material comprises the following steps: (1) preparing a precursor; (2) carrying out pre-sintering organic carbon coating; (3) carrying out rotary kiln vapor deposition carbon coating; and (4) carrying out crushing and sieving. In the method for synthesizing a lithium manganese iron phosphate material coated with discontinuous vapor deposition carbon, raw materials are selected to prepare a precursor, the precursor is then subjected to two-stage sintering of pre-sintering organic carbon coating and rotary kiln vapor deposition carbon coating, and same is then crushed and sieved to obtain a lithium manganese iron phosphate material coated with discontinuous vapor deposition carbon. The lithium manganese iron phosphate material coated with discontinuous vapor deposition carbon prepared by means of the present synthesis method has a compact and uniform coated carbon layer and has relatively good electronic conductivity.
C01B 25/45 - Phosphates contenant plusieurs métaux ou un métal et l'ammonium
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 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
C01B 32/05 - Préparation ou purification du carbone non couvertes par les groupes , , ,
28.
METHOD FOR RECYCLING RAFFINATE ACID IN PROCESS OF WET-PROCESS PURIFICATION PHOSPHORIC ACID PRODUCTION
YICHANG BRUNP YIHUA NEW MATERIAL CO., LTD. (Chine)
Inventeur(s)
Wang, Wei
Wang, Hao
Ruan, Dingshan
Li, Changdong
Zheng, Haiyang
Ding, Daijun
Abrégé
The present disclosure belongs to the technical field of battery raw materials. Disclosed is a method for recycling raffinate acid in a process of wet-process purification phosphoric acid production. The method comprises: removing sulfur, fluorine, arsenic and heavy metals in raffinate acid to be treated, so as to obtain pretreated acid; pre-neutralizing the pretreated acid; then performing purification to obtain a purified liquid and precipitate residues containing iron, aluminum and magnesium; and rectifying the purified liquid to obtain industrial-grade phosphoric acid. The method can achieve effective recycling on the phosphorus resource in the raffinate acid, and the produced industrial-grade phosphoric acid can be used as a raw material to prepare battery-grade phosphates.
A method for recovering nickel and cobalt from a lateritic nickel ore. The method comprises the following steps: subjecting lateritic nickel ore to acid leaching, performing solid-liquid separation so as to obtain a leachate, and then sequentially removing iron, aluminum, calcium and magnesium in the leachate, so as to obtain a calcium-and-magnesium-removed solution; subjecting the calcium-and-magnesium-removed solution to adsorption with an ion exchange resin column for nickel adsorption, and then subjecting same to desorption and evaporative crystallization with sulfuric acid, so as to obtain nickel sulfate and adsorption raffinate; and subjecting the adsorption raffinate to adsorption with an ion exchange resin column for cobalt adsorption, and then subjecting same to desorption and evaporative crystallization with sulfuric acid, so as to obtain cobalt sulfate. The method has the advantages of simple process flow, relatively low production cost, stability and reliability.
C22B 3/42 - Traitement ou purification de solutions, p. ex. de solutions obtenues par lixiviation par extraction utilisant l'échange d'ions
C22B 3/24 - Traitement ou purification de solutions, p. ex. de solutions obtenues par lixiviation par des procédés physiques, p. ex. par filtration, par des moyens magnétiques par adsorption sur des substances solides, p. ex. par extraction avec des résines solides
30.
SOLID ELECTROLYTE CONTAINING LITHIUM IRON PHOSPHATE COATING LAYER AND PREPARATION METHOD THEREOF
The present invention belongs to the field of solid electrolytes, and specifically relates to a solid electrolyte containing a lithium iron phosphate coating layer and a preparation method therefor. The preparation method comprises the following steps: mixing a lithium resource, a phosphorus resource, a reducing agent and a ferrous resource to obtain a mixed solution; and soaking a solid electrolyte ceramic sheet in the mixed solution for a hydrothermal reaction, so as to obtain a solid electrolyte containing a lithium iron phosphate coating layer.
H01M 10/0561 - Accumulateurs à électrolyte non aqueux caractérisés par les matériaux utilisés comme électrolytes, p. ex. électrolytes mixtes inorganiques/organiques l'électrolyte étant constitué uniquement de matériaux inorganiques
31.
BORON-DOPED POSITIVE ELECTRODE MATERIAL PRECURSOR, AND PREPARATION METHOD THEREFOR AND USE THEREOF
A boron-doped positive electrode material precursor, and a preparation method therefor and a use thereof. According to the preparation method, a metal hydroxide raw material is directly mixed with a solution containing borate ions, and a heating reaction is implemented to obtain a boron-doped positive electrode material precursor. The method uses the characteristic that the surface and the internal pores of the metal hydroxide are rich in a large amount of active hydroxyl, to cause the metal hydroxide and the hydroxyl of the borate ions to generate weak interaction, thereby enhancing the uniform adsorption of the boron element on the surface and the internal pores, thus obtaining a precursor having an excellent boron doping effect, and avoiding boron salt residues caused by using a boron salt and a ball milling method. Compared with existing coprecipitation methods, the precipitation efficiency of the boron element is greatly improved, and the solution obtained by separation can be recycled as a solution containing borate ions. The boron-doped positive electrode material prepared by using the precursor has good capacity performance and excellent cycle performance.
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 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 4/505 - 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 method for removing fluorine from a waste lithium battery, comprising the following steps: disassembling a waste lithium battery, carrying out reduction and acid leaching, carrying out solid-liquid separation, and taking a liquid phase to obtain a leachate; carrying out copper removal and aluminum removal on the leachate to obtain an aluminum-removed liquid; adding sodium fluoride into the aluminum-removed liquid to precipitate lithium so as to obtain a lithium-precipitated liquid; and sequentially adding an oxidizing agent and an iron salt solution into the lithium-precipitated liquid, and standing to obtain a fluorine-removed liquid and fluorine removal residue.
Disclosed is a method for removing a manganese element in a nickel-cobalt-manganese-containing solution and a use thereof. A nickel-cobalt-manganese-containing solution is adjusted to be weakly acidic, part of manganese in the solution is oxidized, and then manganese is precipitated in the form of trimanganese tetraoxide; in addition, sodium silicate is used as a dispersant to inhibit further agglomeration or growth of trimanganese tetraoxide particles; and the recovery efficiency and purity of the manganese element are improved in combination with flotation, thereby facilitating the use of a nickel-cobalt-containing solution downstream, and obtaining nickel-cobalt products having higher quality.
Disclosed in the present invention is a vehicle-mounted battery crushing device, comprising a rotating mechanism; a number of feeding mechanisms, which are fixedly connected to the top of the rotating mechanism, wherein the feeding mechanisms are configured to feed batteries; a squeezing and piercing mechanism, which is fixedly connected to the bottom of the rotating mechanism; a crushing mechanism, which is fixedly connected to the bottom of the squeezing and piercing mechanism and configured to crush the batteries; and a battery shooting mechanism, which is fixedly connected to a surface of the squeezing and piercing mechanism, wherein a shooting end of the battery shooting mechanism extends into an inner cavity of the squeezing and piercing mechanism. The technical problem to be solved by the present invention lies in that it is not convenient for the existing vehicle-mounted battery crushing device to automatically feed batteries to be crushed during usage, when too many materials exist in the crushing device, effective crushing cannot be performed, internal blockage of the crushing device is caused, and the working reliability of the crushing device is reduced.
A carbon emission assessment system for recycling of decommissioned battery includes: an information module configured to obtain operation stages of the recycling of decommissioned battery and an input inventory corresponding to each of the operation stages, an instruction module configured to store a carbon dioxide emission calculation formula and carbon dioxide emission factors of different substances, an accounting module, and an analysis module configured to compare the carbon emission results obtained by the accounting module with a pre-stored standard carbon emission to obtain a comparison result, wherein the accounting module is configured to retrieve the carbon emission calculation formula and the carbon emission factors of different substances in the instruction module, in response to the operation stages and the input inventory in the information module inputted by a user, and to obtain carbon emission results for different operation stages.
A compositely coated ternary precursor, and a preparation method therefor and use thereof are provided. The material includes a ternary precursor and a coating layer attached to a surface of the ternary precursor, wherein the coating layer is obtained from a precipitation reaction of a first metal ion and a first polyanion. The metal ion and the polyanion can undergo a precipitation reaction to form a precipitate, to form a uniformly distributed coating layer on the surface of the ternary precursor. After the coated precursor is sintered into a cathode material, part of the coating can form a protective layer on the surface of the material; and the other part of the coating can permeate into the material to form bulk phase doping.
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 4/02 - Électrodes composées d'un ou comprenant un matériau actif
A washing method for a ternary precursor is provided. According to the washing method, by means of multi-stage alcohol leaching, on the premise of ensuring that various properties of a washed material to be dried are identical to those of a material to be dried in a conventional washing process, the moisture contained in the washed material is less, and the washed material is easier to dry. In the washing method for the ternary precursor, a washing procedure in a back-end program of an existing washing procedure is replaced with at least two stages of echelon multistage washing procedures, and the mass fraction of an alcohol solution in a post-washing procedure is higher than that of the alcohol solution in a pre-washing procedure.
The present invention relates to the technical field of carbon emissions, and in particular relates to a method and a system for quantitative analysis of carbon emissions based on power battery recycling. The method comprises: sampling battery recovery processing data of each stage of power battery recycling at specific sampling intervals during a sampling period; extracting the battery recovery processing data at each stage of power battery recycling, to obtain a corresponding time-quantized feature; conducting an influencing factor analysis on the time-quantized features, to obtain a key influencing factor for carbon emissions; and obtaining quantitative information of power battery carbon emissions according to the key influencing factor for carbon emissions and time-quantized features. In the invention, by means of performing quantitative processing on a battery recycling processing data at various stages of power battery regeneration utilization, a comprehensive and accurate analysis of carbon emission in the regeneration utilization process is achieved. Furthermore, quantitative information on power battery carbon emissions is optimized and adjusted on the basis of reinforcement learning, thereby increasing the accuracy of quantification of carbon emissions.
Disclosed is a method for short-range recovery of a valuable metal from a waste ternary lithium battery. By means of the steps of nickel and cobalt precipitation by a two-stage chemical precipitation method and trisodium phosphate-based lithium precipitation, the problem in the prior art of high content of impurities in lithium carbonate is solved and high-quality lithium carbonate is obtained; in addition, the whole process is carried out in a normal pressure environment. Compared with the complex process of recovering nickel, cobalt, and manganese metals by an extraction + MVR evaporative crystallization method and recovering a lithium metal after MVR concentration, the demand of a waste ternary lithium battery recovery process for energy consumption and the pollution of the waste ternary lithium battery recovery process to the environment are greatly reduced, and industrial production is facilitated.
Disclosed are a double-coated lithium-rich manganese-based positive electrode material, a preparation method and a use. According to the double-coated lithium-rich manganese-based positive electrode material, the surface of a lithium-rich manganese-based positive electrode material is firstly coated with metal oxide to form a first coating layer, the chemical stability of the oxide is relatively good, and a coated sample structure is not prone to being corroded and damaged; and then the first coating layer is coated with one or more of fluoride, oxide and phosphate to form a second coating layer, wherein the fluoride, oxide and phosphate can enter lattices of the lithium-rich manganese-based positive electrode material and occupy oxygen vacancies to inhibit oxygen precipitation.
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
42.
CARBON EMISSION MONITORING METHOD AND SYSTEM FOR BATTERY RECYCLING, DEVICE, AND MEDIUM
The present invention provides a carbon emission monitoring method and system for battery recycling, a device, and a medium. The method comprises: inputting acquired scrap information of a lithium battery to be recycled into a pre-constructed scrap classification model for classification prediction to obtain a scrap type; on the basis of the scrap type, determining an optimal recovery method and performing recovered carbon emission prediction on said lithium battery to obtain a carbon emission monitoring target value; performing recycling treatment on said lithium battery according to the optimal recovery method, and on the basis of the acquired actual carbon emission and actual economic revenue from recycling which correspond to each process step, obtaining the actual total carbon emission in recycling and the actual total economic revenue from recycling; and on the basis of the actual total carbon emission in recycling and the actual total economic revenue from recycling in combination with the carbon emission monitoring target value, evaluating the carbon emission in the recovery process of said lithium battery to obtain a carbon emission evaluation result. According to the present invention, a universal carbon emission monitoring method can be provided for lithium battery recovery, and comprehensive and accurate integrated monitoring and scientific and reasonable evaluation of carbon emission in the lithium battery recovery process can be realized.
H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
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
44.
PRODUCTION LINE AND PRODUCTION METHOD FOR POSITIVE ELECTRODE MATERIAL OF LITHIUM-ION BATTERY
Disclosed is a production line and production method for positive electrode material of a lithium-ion battery. The production line comprises a roller kiln; a gas collecting device communicated with the roller kiln and configured to collect gas inside the roller kiln; and a free lithium-measuring device configured to measure content of free lithium in the gas collected by the gas collecting device.
Production process of a lithium battery cathode material is provided, comprising: (1) temperature difference test: putting, into a saggar, a material to be sintered, placing the saggar into a roller kiln heat preservation area, setting a same sintering temperature t on an upper layer and a lower layer of the roller kiln heat preservation area according to the characteristics of said material, sintering in a specific atmosphere, and measuring a temperature difference Δt between a surface layer and a bottom layer of the material during sintering; and (2) formal sintering: putting said material into the saggar, placing the saggar into the roller kiln heat preservation area, setting the sintering temperature of the upper layer of the roller kiln heat preservation area as t according to the temperature difference Δt measured in step (1), the sintering temperature of the lower layer being (t+Δt), and sintering said material in a specific atmosphere.
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
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
46.
MAGNETIC FLOTATION COLUMN AND METHOD FOR RECYCLING SPENT LITHIUM BATTERIES
Disclosed in the present disclosure are a magnetic flotation column and a method for recycling spent lithium batteries. On the basis of the differences between graphite and a positive electrode powder in terms of specific gravity, wettability and magnetism, a flotation column having a magnetic field is applied to the separation of graphite and a positive electrode powder in black mass of a battery, which is conducive to achieving rapid and thorough separation of the graphite and the positive electrode powder and producing a graphite concentrate which can be directly graphitized, thereby reducing chemical costs, and improving the quality of the graphite concentrate.
abcd22, wherein 0.1≤a≤0.8, 0.1≤b≤0.8, 0.1≤c≤0.8, 0.02≤d≤0.5, and a+b+c+d=1. The nickel-iron-manganese-copper precursor is granular, and has a sulfur content of no more than 1,200 ppm, a specific surface area of no more than 50 m 2/g, and a tap density of not less than 1.25 g/cm3.The preparation of the precursor comprises: mixing an intermediate precursor with an antioxidant, a complexing agent and a precipitant to carry out deep coprecipitation and preliminary desulfurization treatment, wherein the intermediate precursor is obtained by preliminarily co-precipitating a nickel-iron-manganese-copper mixed metal sulfate solution and a precipitant according to a preset molecular formula of the precursor. The method involves simple operations, and can obtain a nickel-iron-manganese-copper precursor having low sulfur content and good particle morphology. The precursor can be further used for preparing a positive electrode material and a battery.
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 10/054 - Accumulateurs à insertion ou intercalation de métaux autres que le lithium, p. ex. au magnésium ou à l'aluminium
Disclosed are a battery full-process crushing, sorting and recycling system and method. The recycling system comprises a feeding system (1), an oxygen-free shredding system (2), a low-temperature drying system (3), a pre-sorting system (4), a high-temperature pyrolysis system (5), multiple screening and sorting systems (6), a deep processing system (7), a tail gas treatment system, a fire protection system and a control system. The present system uses multi-stage black mass collection, which is different from conducting screening and collection in the final stage, as in the prior art. The content of black mass impurities obtained by means of multi-stage collection is lower, the purity of each type of material is higher, and the recovery value is higher. The oxygen-free shredding system is used to perform two-stage pre-crushing of materials in an oxygen-free environment, to reduce the risk of fire. An entire battery can be crushed, which is different from manual breaking open of a battery in the prior art. The crushing is carried out only after the electrolyte is released. The oxygen-free crushing processing used is more environment-friendly, safe and efficient.
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
An electrode for extracting lithium from a salt lake and a preparation method thereof, belonging to the field of electrode technology, comprising a current collector and a coating distributed on at least one surface of the current collector. The coating comprises n regions arranged along the same center point and formed in sequence from the inside to the outside, the region closest to the center point of the coating is the first region (101), the region farthest from the center point of the coating is the nth region, wherein, the average porosity of the coating decreases from the first region (101) to the nth region, and the average porosity difference between any two adjacent regions is 1% to 20%. The electrode can effectively improve the purity of recovered lithium.
The present invention provides a method for preparing iron phosphate from ferrophosphorus slag. The method comprises the following steps: (1) pretreating ferrophosphorus slag to obtain a mixture containing aluminum phosphate; (2) mixing the mixture with chloride, roasting to obtain roasted slag, after washing and filtering, mixing the roasted slag with an acid solution, and after reaction, performing solid-liquid separation to obtain a solution A; (3) mixing the solution A with elemental iron, after reaction, carrying out solid-liquid separation to obtain a solution B, and adding an iron source and/or a phosphorus source to adjust a molar ratio of phosphorus to iron to obtain a raw material solution; and (4) mixing the raw material solution with hydrogen peroxide, adjusting the pH value for reaction, carrying out solid-liquid separation to obtain iron phosphate dihydrate, and carrying out sintering treatment to obtain iron phosphate. The method of the present invention can realize deep removal of Al and Cu impurities, thereby preparing high-purity iron phosphate; and the method has a simple process and relatively low costs.
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 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
52.
FULL-CHAIN INTEGRATED COMBINED SALT LAKE LITHIUM EXTRACTION AND AMMONIA PRODUCTION METHOD
The present disclosure provides a full-chain integrated combined salt lake lithium extraction and ammonia production method, the method comprises the following steps (1) using a lithium-rich electrode as an anode and a first carbon electrode as a cathode, injecting an electrolyte to perform discharge treatment to obtain a lithium-poor electrode; (2) using the lithium-poor electrode as a cathode and a second carbon electrode as an anode, placing them in a salt lake brine to perform one-step constant voltage electrolysis to obtain a lithium-embedded electrode; (3) using the lithium-embedded electrode as an anode and a porous carbon electrode as a cathode, separating the same using a diaphragm, injecting an organic purification liquid, continuously introducing nitrogen into the organic purification liquid of the cathode, and performing two-step constant voltage electrolysis; (4) taking out the porous carbon electrode and placing it in water, reacting to obtain a lithium-rich solution, collecting the gas, and obtaining ammonia. The method described in the present disclosure can obtain ammonia while obtaining a lithium salt solution with low impurities, thereby improving the production value of a salt lake lithium extraction process.
A recycling control method and apparatus for a battery, a movable recycling method and apparatus for a battery, and a battery recycling system. The recycling control method for a battery comprises: acquiring a first performance parameter of a battery, second location information of the battery, and first location information of a movable recycling apparatus (S110); predicting retirement information of the battery according to the first performance parameter of the battery (S120); planning a recycling route of the battery according to the retirement information and second location information of the battery and the first location information of the movable recycling apparatus (S130); and according to the recycling route of the battery, controlling the movable recycling apparatus to recycle the battery according to the recycling route (S140).
Disclosed in the present invention are an electrochemical directional circulation-based deintercalation and intercalation balance method and apparatus in lithium extraction, a device, and a medium. The method comprises: performing deintercalation and intercalation in lithium extraction on the basis of working index parameters set for an electrolytic cell, and calculating a lithium deintercalation duration required by a lithium intercalation tank electrode plate; inputting the working index parameters into a pre-trained lithium intercalation duration calculation model, and outputting a lithium intercalation duration corresponding to complete lithium intercalation; calculating a duration difference on the basis of the lithium deintercalation duration and the lithium intercalation duration, inputting the duration difference and the working index parameters into a pre-trained reducing agent calculation model, and outputting a reducing agent dosage required by the lithium intercalation tank electrode plate; and controlling the balance of lithium intercalation and lithium deintercalation on the basis of a reducing agent of the required reducing agent dosage. The deintercalation and intercalation rate in lithium extraction can be balanced, and the lithium extraction efficiency is improved.
The invention belongs to the field of lithium-ion batteries. Provided are a ternary material precursor and a ternary material prepared therefrom. By limiting several parameters of the ternary material precursor, including the specific surface area thereof, the peak intensity ratio I001/I101 of crystal diffraction characteristic peaks, the length-width ratio of whiskers, the true density and the internal porosity, higher quality stability and electrochemical performance can be obtained when the ternary material precursor is subsequently used for preparing a ternary material, especially a single-crystal ternary material.
H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
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
56.
MOISTURE-RESISTANT POSITIVE ELECTRODE MATERIAL, AND PREPARATION METHOD THEREFOR AND USE THEREOF
1+axyza2bf22, and the outer coating layer comprises R. The material provided in the present application has good moisture resistance and electrochemical performance, and can be widely applied to the preparation of batteries.
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
57.
ELECTRODE AND PREPARATION METHOD THEREFOR, DEVICE FOR EXTRACTING LITHIUM FROM SALT LAKE, AND METHOD FOR EXTRACTING LITHIUM FROM SALT LAKE
The present disclosure belongs to the technical field of extraction of lithium from a salt lake, and particularly relates to an electrode and a preparation method therefor, a device for extracting lithium from a salt lake, and a method for extracting lithium from a salt lake. The surface of an electrode matrix is modified by using an amphoteric diblock copolymer, so as to form a diblock copolymer coating layer; and the amphoteric diblock copolymer contains both a hydrophilic block and a hydrophobic block, wherein the hydrophobic block is easily adsorbed on the surface of the electrode matrix to form a stable coating, and the hydrophilic block can improve the hydrophilicity of the electrode and can also complex lithium ions on the surface of the electrode, thereby improving the lithium extraction efficiency.
The present disclosure provides a porous lithium-poor electrode, a preparation method therefor, and a use thereof. The preparation method comprises the following steps: (1) mixing an electrode active material, manganese dioxide, a conductive agent, a binder, and a solvent to obtain a slurry, and coating the slurry onto a surface of a current collector to obtain a lithium-rich electrode; (2) using the lithium-rich electrode as a positive electrode and an AgCl electrode as a negative electrode, adding a first electrolyte solution, and carrying out a first step of constant voltage treatment to obtain a lithium-poor electrode; and (3) using the lithium-rich electrode as a positive electrode and the lithium-poor electrode as a negative electrode, adding a second electrolyte solution, and carrying out a second step of constant voltage treatment to obtain the porous lithium-poor electrode. The voltage of the second step of constant voltage treatment is 1.5-2.5 V. The porosity of the interior of the porous lithium-poor electrode of the present disclosure is controllable, the mass transfer effect in the electrode is high, and the lithium extraction performance is good.
The present disclosure belongs to the technical field of lithium batteries, and specifically relates to lithium tungstate, and a preparation method therefor and the use thereof. In the present disclosure, lithium hydroxide, a tungsten source and an easily decomposable ammonium salt are used as raw materials, and heat generated in a reaction process is absorbed by utilizing the characteristic of the ammonium salt being easily decomposed with heat; therefore, a thermal field can be uniformly distributed in the reaction process, preventing morphological changes of lithium tungstate caused by local overheating, and nano-scale cubic-phase lithium tungstate can be prepared by means of a solid-phase reaction at normal temperature. Compared with a conventional high-temperature solid-phase method, the preparation method provided in the present disclosure does not require high-temperature conditions, the energy consumption involved therein is significantly reduced, and same is suitable for industrial mass production.
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
60.
LITHIUM-RICH MANGANESE-BASED POSITIVE ELECTRODE MATERIAL, AND PREPARATION METHOD AND APPLICATION THEREOF
The present disclosure belongs to the field of lithium battery technology, and specifically relates to a lithium-rich manganese-based positive electrode material, and a preparation method and an application thereof. By means of performing surface oxidation of a dried lithium-rich manganese-based precursor and by means of precisely controlling the oxidation temperature and time, the manganese element can achieve a shallow oxidation effect, during a sintering process with a lithium salt, a layer of spinel structure can be formed on the surface of the material, the spinel structure has a three-dimensional lithium ion diffusion channel, and the channel can accelerate the transmission rate of lithium ions and can effectively improve the electrochemical performance of the material.
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 4/1391 - Procédés de fabrication d'électrodes à base d'oxydes ou d'hydroxydes mixtes, ou de mélanges d'oxydes ou d'hydroxydes, p. ex. LiCoOx
H01M 4/131 - Électrodes à base d'oxydes ou d'hydroxydes mixtes, ou de mélanges d'oxydes ou d'hydroxydes, p. ex. LiCoOx
The present disclosure belongs to the technical field of recycling of spent batteries. Disclosed is a method for full-chain integrated treatment of spent ternary lithium batteries. The method comprises the following steps: subjecting black mass in a spent ternary lithium battery to be treated and a reducing agent to first roasting, so as to obtain a first roasted product; subjecting the first roasted product to a lithium extraction treatment, and subjecting lithium-extracted residues obtained by means of the lithium extraction treatment to magnetic separation; subjecting a non-magnetic material obtained by means of the magnetic separation to first acid leaching and solid-liquid separation, so as to obtain first acid leaching residues; subjecting the first acid leaching residues to second roasting, so as to obtain a second roasted product; and subjecting graphite in the second roasted product to flotation. The method can at least efficiently recycle graphite in spent ternary lithium batteries, thereby avoiding the wasting of resources.
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 disclosure relates to the field of lithium-ion batteries. Disclosed is a method for reducing residual alkali on the surface of a high-nickel positive electrode material. The method comprises the following steps: uniformly stirring and mixing a gel containing polyethylene oxide and high-nickel positive electrode material particles, standing, and performing centrifugal separation to obtain a high-nickel positive electrode material and a lithium complex gel. According to the present disclosure, the gel containing polyethylene oxide is mixed with the high-nickel positive electrode material, residual alkali is efficiently removed by using polyethylene oxide having the property of complexing lithium ions, the process does not cause damage to the interior of high-nickel positive electrode material particles, the operation is simple, the gel can be subsequently recycled, and harmless treatment of a product is realized.
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
63.
ELECTRODE ACTIVE MATERIAL COATED WITH SOLID-STATE ELECTROLYTE LAYER, AND PREPARATION METHOD THEREFOR AND USE THEREOF
The invention relates to the technical field of extraction of lithium from a salt lake. Disclosed are an electrode active material (1) coated with a solid-state electrolyte layer (2), and a preparation method therefor and the use thereof. The structure of the electrode active material (1) coated with the solid-state electrolyte layer (2) is a core-shell structure, wherein a core structure is composed of the electrode active material (1), and a shell structure is composed of the solid-state electrolyte layer (2); and the solid-state electrolyte layer (2) is formed by complexing polyethylene oxide, which is doped with inorganic nanoparticles, with a lithium salt, and has good lithium ion conductivity. The electrode active material (1) coated with the solid-state electrolyte layer (2) is used for preparing an electrode for extraction of lithium from a salt lake, and the obtained electrode for extraction of lithium from a salt lake has better lithium extraction efficiency, cycling stability and lithium extraction capacity.
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 4/62 - Emploi de substances spécifiées inactives comme ingrédients pour les masses actives, p. ex. liants, charges
64.
TERNARY POSITIVE ELECTRODE MATERIAL, AND PREPARATION METHOD THEREFOR AND USE THEREOF
A ternary positive electrode material, and a preparation method therefor and a use thereof. The preparation method for the ternary positive electrode material comprises the following steps: (1) mixing a ternary precursor and a lithium source, and carrying out first-stage sintering treatment to obtain a first-stage sintered material; and (2) crushing the first-stage sintered material obtained in step (1), mixing the crushed first-stage sintered material with titanium dioxide, carrying out second-stage sintering treatment on a mixture of the first-stage sintered material and the titanium dioxide under illumination, and oxidizing divalent nickel into trivalent nickel to obtain the ternary positive electrode material. In the preparation process of the ternary positive electrode material, divalent nickel can be oxidized into trivalent nickel under the assistance of illumination while trivalent nickel is inhibited from being converted into divalent nickel, thereby reducing the nickel-lithium mixed arrangement of the material.
The present disclosure provides a full-chain integrated lithium recovery method, the method comprises the following steps: (1) mixing a lithium-containing material from waste lithium batteries and a reducing agent and then roasting to obtain a roasted sand; (2) concentrating a high calcium chloride brine and then adding sodium dihydrogen phosphate to obtain dicalcium phosphate and a brine solution by solid-liquid separation; and (3) mixing the roasted sand and the brine solution to obtain transition slag calcium carbonate and a mixed solution by solid-liquid separation, mixing the mixed solution with an alkaline solution to adjust the pH, heating and stirring, and then performing solid-liquid separation to obtain a lithium phosphate precipitate and a recovery liquid. The method described in the present disclosure can extract lithium from high calcium chloride salt lake brine while recovering lithium from waste lithium-ion batteries, thus realizing the full-chain integrated recovery of lithium.
A resource recycling treatment method for washing water in the process of preparing iron phosphate from a nickel-iron alloy, relating to the technical field of battery resource recovery. The method comprises carrying out precision membrane filtration, electrocoagulation reaction, disc filtration, bag filtration, acidic ultrafiltration, cation exchange, polishing filtration, primary acidic reverse osmosis treatment, etc., on iron phosphate washing water to be treated. By means of the aforementioned treatment, pure water in the iron phosphate washing water can be recycled under acidic conditions during the entire process without adjusting the pH value, thereby solving the problems of discharge and disposal of washing wastewater in iron phosphate. Furthermore, resource recycling cyclic comprehensive utilization can be formed. The entire treatment process does not introduce new ions interfering with the entire production system and is green, environmentally-friendly, and low in cost.
The present application provides an adjustable electrochemical deintercalation-based lithium extraction system and an application thereof. The electrochemical deintercalation-based lithium extraction system comprises a voltage monitor, a neural network model and an automatic temperature regulator; the voltage monitor acquires the real-time voltage of a cathode plate, inputs the real-time voltage of the cathode plate into the neural network model to obtain a corresponding temperature value, and inputs the temperature value into the automatic temperature regulator; the automatic temperature regulator performs automatic regulation to reach a desired temperature, so that the working voltage of an anode electrode plate is consistent with the working voltage of a cathode electrode plate.
The present disclosure relates to the field of Prussian blue materials, and provides a modified Prussian blue material, a preparation method therefor, and a use thereof. The modified Prussian blue material provided by the present disclosure comprises a Prussian blue material serving as a core layer, and sodium iron phosphate and optional sodium M phosphate which serve as an in-situ coating layer. According to the present disclosure, the sodium iron phosphate and the optional sodium M phosphate can be generated on the surface of the Prussian blue material in situ, such that the coating is tighter, the material can achieve a certain waterproof effect, the Prussian blue material can be effectively isolated from an electrolyte to avoid direct contact therebetween, side effects with the electrolyte and the dissolution of metal ions are reduced, and therefore the cycle stability of the Prussian blue material is improved. The coating means used in the present disclosure is simple and easy to operate, and the prepared modified Prussian blue material has good cycle stability and can be widely applied to the preparation of positive electrode materials in sodium ion batteries.
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 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
H01M 10/054 - Accumulateurs à insertion ou intercalation de métaux autres que le lithium, p. ex. au magnésium ou à l'aluminium
69.
LITHIUM EXTRACTION SYSTEM AND LITHIUM EXTRACTION METHOD
A lithium extraction system and a lithium extraction method. The lithium extraction system comprises a lithium extraction device and a capacitor device (1). The lithium extraction device comprises an electrolytic cell (4) and a partition plate (6); the partition plate (6) partitions the electrolytic cell (4) into a cathode chamber (5) and an anode chamber (7); a cathode (3) is provided in the cathode chamber (5) and is an electrode made of an electrode material capable of adsorbing lithium; an anode (8) is provided in the anode chamber (7) and is an electrode made of an electrode material capable of intercalating lithium; the anode chamber (7) is communicated with a negative electrode of the capacitor device (1) by means of a pipe (2), and the cathode chamber (5) is communicated with a positive electrode of the capacitor device (1) by means of a pipe (2); and an electrolyte is provided in the capacitor device (1). The lithium extraction method is performed by using the lithium extraction system and comprises the following steps: S1: introducing an anode electrolyte into an anode chamber (7) of a lithium extraction device, and at the same time, introducing a cathode electrolyte into a cathode chamber (5), wherein the cathode electrolyte contains lithium ions; and disconnecting power after the capacitor device (1) is charged; and S2: electrifying the lithium extraction device to perform lithium extraction.
The present application provides a composite positive electrode material precursor and a preparation method therefor. The composite positive electrode material precursor comprises nickel-cobalt-manganese hydroxide secondary particles; a Na-containing substance is attached to the surfaces of the nickel-cobalt-manganese hydroxide secondary particles and gaps of wafers; doping and coating of Na ions can be achieved without adding a Na additive during sintering of a positive electrode material. The preparation method for the precursor comprises: dehydrating a precursor slurry, sequentially spraying a washing agent and a coating agent, and drying to obtain the precursor. A water washing step is omitted in a washing process, the original Na ions of the washing agent are reserved, and a certain Na source is added, thereby improving the structural stability, the rate capability and the cycle performance of a ternary positive electrode material.
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 4/48 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques
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
71.
COMPOSITE LITHIUM-SUPPLEMENTING MATERIAL, AND PREPARATION METHOD THEREFOR AND USE THEREOF
The present disclosure belongs to the technical field of lithium-ion battery materials, and particularly relates to a composite lithium-supplementing material, and a preparation method therefor and the use thereof. An organic lithium-supplementing agent is dispersed in a carbon nano skeleton having a three-dimensional conductive network structure, and is more uniformly dispersed by means of the three-dimensional conductive network structure, thereby improving the utilization rate of active sites of the organic lithium-supplementing agent which participate in an electrochemical reaction; in addition, the carbon nano skeleton can further improve the conductivity of the composite lithium-supplementing material, thereby reducing the decomposition voltage plateau.
The present disclosure belongs to the technical field of lithium batteries, and in particular relates to a lithium manganese iron phosphate positive electrode material, a preparation method therefor and the application thereof, and a lithium manganese iron phosphate positive electrode sheet, a preparation method therefor and the application thereof. A superionic conductor is introduced into a lithium manganese iron phosphate substrate, and the type of the superionic conductor is selected and optimized, such that the direct contact of an electrolyte with iron and manganese can be reduced to a greater extent due to the presence of the superionic conductor and a carbon layer, thereby ameliorating a side reaction between the surfaces of positive electrode particles and the electrolyte, and the internal structure of lithium manganese iron phosphate positive electrode particles can be stabilized, thereby improving the electrochemical performance of the material. During preparation of the electrode sheet, due to an introduced regulator, the electrode sheet can be prevented from excessively swelling in an electrolyte, and a positive electrode active material can be tightly adhered to a current collector; and during a cycle process, an electrode structure can be stabilized, and the material is prevented from falling off the electrode sheet, thereby improving the cycling performance of a battery.
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
73.
LITHIUM EXTRACTION DEINTERCALATION TANK AND USE THEREOF
Provided in the present disclosure are a lithium extraction deintercalation tank and the use thereof. Partition plates with openings are arranged in main tanks, and the openings of adjacent partition plates are staggered up and down to form a plurality of connected "pipelined" lithium extraction tanks; a solution to be subjected to lithium extraction is led "zigzag" to the plurality of lithium extraction tanks, such that the concentration of lithium ions in said solution is gradually reduced in a flow direction; and lithium extraction electrodes containing different lithium ion sieve materials are correspondingly provided according to changes in the concentration, and the lithium extraction electrodes are configured to be different constant-current sections having operating currents decreasing progressively in sequence and/or different constant-voltage sections having operating voltages decreasing progressively in sequence, so as to perform electrolytic lithium extraction, thereby realizing a simple, flexible and efficient lithium extraction mode.
5050 are used as raw materials for grading, and before calcination, the small-particulate ternary positive electrode material is reacted with a silicon source so that the surface of the small-particulate ternary positive electrode material is coated with silicon dioxide to form a ternary composite positive electrode material having a core-shell structure, thereby significantly improving the conductivity, the cycling stability and the tap density of the ternary positive electrode material, and reducing the content of residual alkali on the surface of the ternary positive electrode material.
The present disclosure provides a magnetic lithium-rich electrode, and a preparation method therefor and a use thereof. The magnetic lithium-rich electrode comprises a current collector and an active material layer provided on a surface of the current collector; the active material layer comprises an electrode active material, a magnetic material, a conductive agent, and a binder; the porosity of the magnetic lithium-rich electrode is 10-60%. In the present disclosure, by means of a magnetic field-assisted lithium extraction method in which a magnetic field is applied in an electrode preparation process, electrode porosity and the lithium ion conduction rate can be improved, thus the electrode internal mass transfer rate is increased and the electrochemical lithium extraction efficiency is markedly improved.
The present disclosure belongs to the technical field of cobalt hydroxide preparation. Disclosed are a preparation method for and the use of a cobalt hydroxide nanosheet. The preparation method comprises: mixing first liquid caustic soda and water to prepare a base solution; under a protective atmosphere, adding in a parallel flow manner a cobalt salt solution, second liquid caustic soda and a silane coupling agent to the base solution so as to carry out a reaction, controlling the reaction pH to be 12-13 during the parallel flow process, and obtaining a cobalt hydroxide slurry after the reaction is completed; and carrying out solid-liquid separation on the cobalt hydroxide slurry, washing the obtained solid material, and drying and crushing same to obtain a cobalt hydroxide nanosheet.
H01M 4/52 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer
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 provides an electrochemical deintercalation-based lithium extraction method. The method comprises the following steps: (1) injecting a salt solution into an anode chamber of an electrochemical deintercalation-based lithium extraction device, injecting salt-lake brine into a cathode chamber thereof, using a lithium-rich electrode as an anode, using a lithium-poor electrode as a cathode, applying a first voltage to carry out primary lithium extraction, and suspending the reaction when the current is lower than 0.2 mA; (2) removing the lithium-poor electrode, using the lithium-rich electrode as the cathode, using an auxiliary electrode as the anode, applying a second voltage to carry out secondary lithium extraction, and suspending the reaction when the current is lower than 0.2 mA; and (3) removing the auxiliary electrode, using the lithium-poor electrode as the cathode, repeating the steps of primary lithium extraction and secondary lithium extraction to carry out multi-stage lithium extraction until the relation is satisfied: a-b < 1%, ending the first multi-stage lithium extraction, carrying out the multi-stage lithium extraction after switching the anode and the cathode, and repeating the multi-stage lithium extraction for n times to obtain a lithium-rich solution. The method disclosed by the present disclosure can fully exert the adsorption performance of materials, reduces capacity attenuation of thereof, and avoids the problem of mismatch between capacities.
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
79.
METHOD FOR EXTRACTING LITHIUM FROM SALT LAKE BY MEANS OF ELECTROCHEMICAL DEINTERCALATION
Disclosed in the present application is a method for extracting lithium from salt lake by means of electrochemical deintercalation. The method comprises the following steps: (1) separately injecting a recovery liquid into an anode chamber and injecting salt lake brine into a cathode chamber, isolating same by using an anion exchange membrane, and performing a constant-voltage reaction using a lithium-rich electrode as an anode and a lithium-poor electrode as a cathode; (2) when the current density of the constant-voltage reaction is reduced to 30-40 A/m2, injecting a highly-reductive gas into the salt lake brine; and (3) when the current density is reduced to 5 A/m2, powering same off to stop the reaction, exchanging the cathode and the anode, and repeating the constant-voltage reaction, so as to obtain a lithium-rich solution. The present application introduces the reductive gas into the brine at the cathode, so as to improve the lithium intercalation rate of the cathode, thus sufficiently ensuring the adsorption capacity of electrodes and avoiding the problem of capacity attenuation during cyclic lithium extraction processes.
The present disclosure provides a method for full-chain integrated low-carbon production of a positive electrode material. The method comprises the following steps: (1) preparing a ternary precursor by means of a coprecipitation method, collecting first waste gas, and carrying out pre-oxidation treatment on the precursor to obtain an oxidized precursor; (2) mixing the oxidized precursor and lithium carbonate for first-stage sintering, collecting second waste gas, and introducing oxygen-containing gas for second-stage sintering to obtain a ternary positive electrode material; and (3) mixing a phosphorus source, an iron source and a lithium source to obtain a lithium iron phosphate precursor, mixing the lithium iron phosphate precursor with a carbon source, introducing the second waste gas, carrying out calcination treatment to obtain a lithium iron phosphate positive electrode material, and absorbing the second waste gas with a solution of the first waste gas to obtain an ammonium carbonate solution. According to the present disclosure, by changing the oxidation mode of a ternary material, the two preparation processes of the ternary material and a lithium iron phosphate material can cooperate with each other, and separation and recycling of two atmospheres are achieved by controlling conditions so as to achieve the objective of energy saving and carbon reduction.
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 4/1397 - 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 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 relates to a preparation method for flaky cobalt hydroxide. The preparation method comprises the following steps: mixing a precipitant, a cobalt salt solution and humic acid, and carrying out a precipitation reaction to obtain a slurry; carrying out solid-liquid separation on the slurry; and sequentially washing and drying the separated solid to obtain flaky cobalt hydroxide. The preparation method provided by the present disclosure can prepare well-dispersed and oxidation-free flaky cobalt hydroxide, and the operation process thereof does not need an additional crushing link, thus saving cost; and the method is safe and non-toxic.
A method and device for defining a carbon emission accounting boundary for recycling of power batteries are provided. The method includes: setting an overall process flow range for the recycling of a decommissioned power battery; according to the overall process flow range, and in combination with an evaluation need corresponding to the carbon emissions accounting, generating a corresponding boundary; according to the boundary, outputting unit processes and an inventory structure corresponding to the recycling of the retired power battery.
The invention relates to the technical field of positive electrode materials. Disclosed are a Prussian blue positive electrode material and a preparation method therefor, and a Prussian blue positive electrode sheet. The preparation method for the Prussian blue positive electrode material comprises the following steps: mixing a sodium ferrocyanide solution, a hydrophobic liquid and a surfactant until phase separation does not occur, so as to obtain a precursor microemulsion; adding a transition metal salt solution to the precursor microemulsion, and stirring same, so as obtain a Prussian blue microemulsion; and subjecting the Prussian blue microemulsion to an aging treatment, solid-liquid separation, washing and drying, so as to obtain the Prussian blue positive electrode material. The Prussian blue positive electrode material prepared by using the method is unlikely to absorb water, and has good storage performance and conductivity.
A battery module end plate and side plate disassembling apparatus (10) and a battery module end plate and side plate disassembling method. The battery module end plate and side plate disassembling apparatus (10) comprises a mounting frame (100), a conveying mechanism (10a), and a rotary pressing and detaching mechanism (400). The rotary pressing and detaching mechanism (400) comprises a pressing assembly (410), a rotary insertion assembly (420), and a rotary platform assembly (430). A battery module is conveyed to the rotary platform assembly (430) by means of the conveying mechanism (10a), the pressing assembly (410) presses and holds the battery module, an acting end of the rotary insertion assembly (420) is inserted into a through hole of the battery module after the battery module is held, and after the insertion is completed, the rotary insertion assembly (420) rotates until an end plate of the battery module is completely detached from a side plate of the battery module.
H01M 10/54 - Récupération des parties utiles des accumulateurs usagés
B23P 19/00 - Machines effectuant simplement l'assemblage ou la séparation de pièces ou d'objets métalliques entre eux ou des pièces métalliques avec des pièces non métalliques, que cela entraîne ou non une certaine déformationOutils ou dispositifs à cet effet dans la mesure où ils ne sont pas prévus dans d'autres classes
85.
PREPARATION METHOD FOR CARBONACEOUS MATERIAL, CARBONACEOUS MATERIAL AND USE
The present disclosure relates to the technical field of carbon materials, and particularly relates to a preparation method for a carbonaceous material, the carbonaceous material and a use. A carbonized material formed by a biomass material is sintered at a high temperature in a chlorodifluoromethane atmosphere, and in this process, chlorodifluoromethane is decomposed to generate tetrafluoroethene and hydrogen chloride gas, tetrafluoroethylene can generate octafluorocyclobutane, and octafluorocyclobutane can react with silicon dioxide to generate silicon tetrafluoride, carbon dioxide and carbon; and the generated hydrogen chloride gas can react with metal impurities at a high temperature to generate metal chloride. By means of the preparation method provided by the present disclosure, metal impurities such as iron and calcium can be removed while silicon dioxide is removed, acid pickling and alkali washing processes are not needed, and waste liquid treatment is not involved.
A recovery treatment method based on a lithium-extracted battery powder, which method comprises the following steps: subjecting the battery powder, which has been subjected to lithium extraction, to a pulping operation, so as to obtain a slurry; mixing sulfuric acid, a reducing agent and the slurry, and then subjecting the mixture to a first-section leaching and filtering operation, so as to obtain a first leachate and a first leaching residue; subjecting the first leachate to a P204 extraction and impurity removal operation, so as to obtain a battery-grade nickel-cobalt-manganese solution; mixing sulfuric acid, the reducing agent and the first leaching residue, and then subjecting the mixture to a second-section leaching and filtering operation, so as to obtain a second leachate and a second leaching residue; subjecting the second leachate to an impurity removal and filtration operation, so as obtain a filtrate and a filtering residue; and subjecting the second leaching residue to a high-acid leaching and filtering operation, so as to obtain a battery-grade graphite raw material, wherein the pH value in the first-section leaching and filtering operation is 4-6, and the pH value in the second-section leaching and filtering operation is 1-2.
The present disclosure relates to a method for extracting lithium by means of electrochemical deintercalation and the use thereof. The method comprises the following steps: (1) constructing an electrolytic tank for lithium extraction; and (2) energizing the electrolytic tank to extract lithium, and in a lithium extraction process, periodically increasing the voltage and applying ultrasound to the electrolytic tank, so as to complete lithium extraction by means of electrochemical deintercalation. The voltage is periodically increased, and during lithium extraction, a slight water electrolysis reaction occurs on an electrode sheet by means of the changes of the voltage, such that micro- and nano-scale bubbles are generated in an electrode; and by means of the synergistic action of same and the ultrasonic effect, brine in the electrode can undergo ultrasonic cavitation and can be disturbed, such that the flowing of the brine is promoted, and an internal mass transfer channel blocked by an impurity phase is dredged.
The present disclosure belongs to the technical field of extraction of lithium from a salt lake. Disclosed are a method for preparing lithium-ion sieve particles, and the use of lithium-ion sieve particles. The method comprises: mixing a lithium-ion sieve powder, a binder and a pore forming agent, and then extruding and granulating same, so as to obtain porous particles; placing carbon fibers in a strong oxidizing solution to undergo a first heat treatment, taking same out, and cleaning and drying same, so as to obtain modified carbon fibers; and placing the modified carbon fibers in a silane coupling agent solution to undergo a second heat treatment, so as to obtain a turbid liquid, adding the porous particles to the turbid liquid, mixing same until uniform, subjecting same to a third heat treatment, and filtering and drying same, so as to obtain lithium-ion sieve particles.
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
B01J 20/30 - Procédés de préparation, de régénération ou de réactivation
Disclosed are a preparation method for high-performance lithium iron phosphate and use thereof. The method comprises the following steps: dispersing a lithium salt into a solvent A, and adding an organic acid to adjust the pH to obtain a mixed solution; dispersing porous iron phosphate into a solvent B, and adding an organic carbon source to obtain a mixed slurry A; adding the mixed slurry A into the mixed solution; grinding the obtained slurry; adding a dispersing agent into the grinding material for stirring and dispersing to obtain a mixed slurry B; placing the mixed slurry B under the pressure of 100-1000 Pa for aging and drying; and sintering the obtained dry material in an inert atmosphere to obtain lithium iron phosphate.
C04B 35/447 - Produits céramiques mis en forme, caractérisés par leur compositionCompositions céramiquesTraitement de poudres de composés inorganiques préalablement à la fabrication de produits céramiques à base d'oxydes à base de phosphates
C04B 35/626 - Préparation ou traitement des poudres individuellement ou par fournées
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
90.
USE OF LITHIUM FERROCYANIDE, ANOLYTE, AND METHOD FOR EXTRACTING LITHIUM FROM SALT LAKE BRINE BY MEANS OF ELECTRICAL DE-INTERCALATION
The present disclosure belongs to the technical field of lithium extraction from brine, and particularly relates to the use of lithium ferrocyanide, an anolyte, and a method for extracting lithium from salt lake brine by means of electrical de-intercalation. The method comprises extracting lithium from salt lake brine by means of electrical de-intercalation by using a salt lake brine electrical de-intercalation lithium extraction device. The salt lake brine electrical de-intercalation lithium extraction device comprises an electrolytic bath, an anion exchange membrane, an anode and a cathode, wherein the anion exchange membrane is arranged in the electrolytic bath to vertically divide the electrolytic bath into a cathode chamber and an anode chamber; the anode is arranged in the anode chamber; and the cathode is arranged in the cathode chamber. A voltage is applied to the cathode and the anode, so as to carry out lithium extraction by means of electrical de-intercalation, and an anolyte is added into the anode chamber during the process of lithium extraction by means of electrical de-intercalation. In the present disclosure, by means of adding lithium ferrocyanide into an anode chamber as an anolyte, the intercalation amount of a cathode ion sieve can be guaranteed, such that the lithium de-intercalation capacity of the cathode and the anode is more matched, and the lithium extraction efficiency is improved.
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
91.
CERAMIC MEMBRANE ELECTROLYTIC BATH FOR EXTRACTING LITHIUM FROM SALT LAKE BY MEANS OF ELECTRICAL DE-INTERCALATION, AND ELECTROLYSIS DEVICE AND METHOD FOR EXTRACTING LITHIUM FROM SALT LAKE BY MEANS OF ELECTRICAL DE-INTERCALATION
The present disclosure relates to the technical field of lithium extraction from a salt lake, and provides a ceramic membrane electrolytic bath for extracting lithium from a salt lake by means of electrical de-intercalation, and an electrolysis device and method for extracting lithium from a salt lake by means of electrical de-intercalation. In the present disclosure, a lithium ion conductor ceramic membrane is used as a bottom wall and a side wall, so as to form a ceramic membrane electrolytic bath, such that the ceramic membrane electrolytic bath has the effect of preferentially selectively permeating Li+. The ceramic membrane electrolytic bath provided in the present disclosure can be arranged in brine of an electrolysis device for extracting lithium from a salt lake by means of electrical de-intercalation; water is added to the ceramic membrane electrolytic bath; a lithium-intercalated electrode is placed as a cathode therein; and Li+ in the brine moves towards the cathode under the action of an electric field, is preferentially separated from other impurity cations by means of the ceramic membrane electrolytic bath and is preliminarily enriched in pure water, thereby reducing the influence of the impurity cations on the electrical de-intercalation process. The preparation method for a lithium-ion ceramic membrane is simple and easy for large-scale production, and has a low cost.
22O on the surface of the material, thereby reducing the generation of residual alkali; in addition, lithium is diffused to the core without an excessively long calcination time, such that the calcination time can be shortened, production energy consumption is reduced, and carbon emissions are reduced.
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 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 4/131 - Électrodes à base d'oxydes ou d'hydroxydes mixtes, ou de mélanges d'oxydes ou d'hydroxydes, p. ex. LiCoOx
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
93.
METHOD FOR TREATING WASTE BATTERIES IN FULL-CHAIN INTEGRATED MANNER, AND REGENERATED POSITIVE ELECTRODE MATERIAL AND BATTERY
The present invention belongs to the technical field of battery material recovery, and disclosed are a method for treating waste batteries in a full-chain integrated manner, and a regenerated positive electrode material and battery. The method comprises the following steps: reacting a lithium-containing negative electrode sheet in a waste battery with a lower alcohol, so as to obtain a lower lithium alkoxide; and performing first lithium-supplementing repair on a positive electrode material in the waste battery by using the lower lithium alkoxide in a gas form, so as to obtain a pre-repaired positive electrode material. By means of the method, lithium in the negative electrode sheet of the waste battery can be effectively recovered, and the positive electrode material of the waste battery is subjected to lithium supplementation by using the lower lithium alkoxide in a gas form, such that deep lithium supplementation of the positive electrode material can be realized, and the uniformity of lithium supplementation of the positive electrode material is improved. The pre-repaired positive electrode material is further prepared into a battery by means of a subsequent treatment, and a relatively high specific capacity and cycle retention rate can be obtained.
The present disclosure belongs to the technical field of Prussian blue materials, and particularly relates to a method for preparing a Prussian blue material, and a Prussian blue material and the use thereof. The Prussian blue material is prepared according to electrochemical principles, and transition metal cations and transition metal cyanide anions are separated by means of a cation exchange membrane; and after energization, the transition metal cations can be slowly released and react with the transition metal cyanide anions, and the speed of precipitate formation can be further controlled by controlling a current, such that structure defects caused by a very fast reaction rate are avoided. The preparation method is beneficial for improving the electrochemical performance of a product when being used for preparing a positive electrode material for a sodium-ion battery.
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
The present disclosure belongs to the technical field of batteries. Disclosed are a modified high-nickel ternary positive electrode material and a preparation method therefor, and a battery. The modified high-nickel ternary positive electrode material is obtained by coating a high-nickel ternary positive electrode material with a lithium-free or lithium-poor Prussian blue material, and performing lithium replenishment on the coating layer in an electrolyte solution. The modified high-nickel ternary positive electrode material has a low surface residual alkali content and a relatively high specific capacity. The preparation method for the modified high-nickel ternary positive electrode material is simple, is easy to operate, and can be industrially promoted. The battery comprising the modified high-nickel ternary positive electrode material is enabled to have relatively high electrochemical performance.
H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
H01M 4/52 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer
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 4/131 - Électrodes à base d'oxydes ou d'hydroxydes mixtes, ou de mélanges d'oxydes ou d'hydroxydes, p. ex. LiCoOx
96.
TERNARY POSITIVE ELECTRODE MATERIAL, PREPARATION METHOD THEREFOR AND USE THEREOF
The present disclosure belongs to the technical field of lithium battery recovery, and particularly relates to a ternary positive electrode material, a preparation method therefor and the use thereof. The method comprises placing a lithium nickel manganese cobalt oxide positive electrode material in a humid environment, such that Li2O on the surface of the material absorbs water to generate LiOH; and then subjecting same to a substitution reaction with a halogenated alkane to generate a halogenated lithium and an alcohol. The preparation method provided by the present disclosure involves a shorter technological process, and the prepared ternary positive electrode material has the advantage of low residual alkali contents. The halogenated alkane has neither strong oxidation nor acidity, and therefore does not cause damage to the structure of the ternary material, thereby enabling the positive electrode material to keep excellent electrochemical properties.
H01M 4/1315 - Électrodes à base d'oxydes ou d'hydroxydes mixtes, ou de mélanges d'oxydes ou d'hydroxydes, p. ex. LiCoOx contenant des atomes d'halogène, p. ex. 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
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
97.
POSITIVE ELECTRODE MATERIAL CO-MODIFIED BY MEANS OF DOPING AND COATING WITH HIGH-ENTROPY OXIDE, AND PREPARATION METHOD THEREFOR AND USE THEREOF
Disclosed in the present disclosure are a positive electrode material co-modified by means of doping and coating with a high-entropy oxide, and a preparation method therefor and the use thereof. The positive electrode material comprises a substrate and a high-entropy oxide, wherein part of the high-entropy oxide coats the surface of the substrate to form a coating layer, part of the high-entropy oxide enters the surface layer of the substrate to form a doped layer, and the substrate is an O3 type layered transition metal oxide. In the present disclosure, the high-entropy oxide is utilized to coat the substrate, such that good effects are achieved on the rate and cycle performance of a positive electrode material of a sodium-ion battery.
The present disclosure relates to the technical field of extraction of lithium from a salt lake. Provided are an electrode-coating-free method for extracting lithium by means of electrochemical deintercalation, and the use thereof. The electrode-coating-free method for extracting lithium by means of electrochemical deintercalation comprises: using a lithium-ion battery powder separated from spent lithium-ion batteries as a lithium-intercalated powder, and using the lithium-ion battery powder which has been subjected to delithiation as a lithium-deintercalated powder; respectively adding the lithium-intercalated powder and the lithium-deintercalated powder to an anode zone and a cathode zone of an electrolytic bath for lithium extraction, and respectively adding solid conductive particles to the anode zone and the cathode zone, wherein the particle size of the solid conductive particles is larger than that of the lithium-intercalated powder and that of the lithium-deintercalated powder; and applying a voltage to an anode electrode and a cathode electrode to extract lithium. In the present disclosure, positive and negative electrode powders of spent lithium-ion batteries are used as a lithium ion adsorbent, and are directly added to brine without the need for using a carrier or coating same onto an electrode plate, and lithium extraction can be conducted simply by means of energization; therefore, the method is easy and convenient to operate, and realizes resource utilization of spent lithium-ion batteries.
xyzthn2abcefg22. M is a +2-valent metal element, and Q is a +4-valent metal element. The present disclosure reduces interface side reactions by means of surface doping using a positive divalent metal element, and by means of doping the O3-O'3 phase using a positive tetravalent metal element, inhibits manganese dissolution of the phase during a cycle and inhibits manganese dissolution of O'3 after the O3-O'3 phase transformation of the material, thereby improving the cycle performance of the material.
H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
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 10/054 - Accumulateurs à insertion ou intercalation de métaux autres que le lithium, p. ex. au magnésium ou à l'aluminium
100.
WASTE LITHIUM BATTERY PYROGENIC SLAG LITHIUM EXTRACTION METHOD APPLIED TO INTEGRATION OF ENTIRE INDUSTRIAL CHAIN OF LITHIUM BATTERIES
The present disclosure relates to the technical field of lithium battery recovery, and relates to a waste lithium battery pyrogenic slag lithium extraction method applied to the integration of the entire industrial chain of lithium batteries. Pyrogenic slag is mixed with a roasting agent which is a mixed inorganic salt and a cation exchanger for heat treatment; silicate structures in the pyrogenic slag can be activated under the action of high temperature; when silicates are mixed with a molten salt formed by the roasting agent, under the driving of a chemical position gradient, ions would diffuse and large-radius cations can exchange with small-radius cations in lattices; a cation exchanger is added for catalysis, and under the condition, lithium ions are converted from an insoluble silicate phase into a soluble lithium salt phase, so that lithium is recycled by leaching. The method has a high conversion rate, a simple process, and is easy for industrial production; the process does not require the use of strong acids or strong alkalis, so that the consumption of acids and alkalis is reduced; in addition, no acidic and alkaline waste gas would be generated in the process, thereby reducing the cost of environmental protection treatment. The method is a green and environmentally friendly recovery process.
