ADDITIVE FOR LITHIUM ION SECONDARY BATTERY POSITIVE ELECTRODE MATERIAL, LITHIUM ION SECONDARY BATTERY POSITIVE ELECTRODE MATERIAL CONTAINING SAME, AND LITHIUM ION SECONDARY BATTERY
The present invention addresses the problem of providing a novel additive for a positive electrode material capable of improving the performance of a lithium ion secondary battery, a lithium ion secondary battery positive electrode material including the same, and a lithium ion secondary battery. The improvement in performance refers to an increase in the performance of the lithium ion secondary battery when the positive electrode additive is added compared to when not added. Provided are: an additive for a positive electrode material used in a nonaqueous electrolyte lithium ion secondary battery, the additive being a compound containing a rare earth element, boron, oxygen, and hydrogen, characterized in that the compound is amorphous; a lithium ion secondary battery positive electrode material including the same; and a lithium ion secondary battery.
H01M 4/62 - Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
H01M 4/13 - Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulatorsProcesses of manufacture thereof
H01M 4/36 - Selection of substances as active materials, active masses, active liquids
H01M 4/505 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
H01M 4/525 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
2.
ADDITIVE FOR LITHIUM-ION SECONDARY BATTERY POSITIVE ELECTRODE USING ELECTROLYTE SOLUTION, LITHIUM-ION SECONDARY BATTERY POSITIVE ELECTRODE MATERIAL, AND LITHIUM-ION SECONDARY BATTERY
NATIONAL UNIVERSITY CORPORATION OKAYAMA UNIVERSITY (Japan)
NIPPON DENKO CO., LTD. (Japan)
Inventor
Teranishi, Takashi
Sasaoka, Chinatsu
Hirabaru, Hikaru
Hidaka, Kyoko
Abstract
22 in a lithium-ion secondary battery positive electrode material that contains one or more of Mn, Fe and Ni; and a lithium ion secondary battery positive electrode material and a lithium ion secondary battery containing same. An additive for a lithium ion secondary battery positive electrode is characterized by containing a composite oxide that is present together with a lithium ion secondary battery positive electrode material containing cations of one or more elements selected from among Mn, Fe, Ni and Co, and in that the composite oxide does not contain alkali metal ions or alkaline earth metal ions, has an acid point and a base point, and has a relative dielectric constant of 20 or more. Also provided are a lithium ion secondary battery positive electrode material and a lithium ion secondary battery containing the additive.
ABCD12 ± σ12 ± σ, wherein A to D representing molar ratios satisfy a certain relationship, the lattice constant ratio c/a is 2.52 or less, the solid electrolyte has a NASICON-type structure of a rhombohedral crystal system having a lattice volume of 1505 Å3- 1522 Å3, and the proportion of triclinic structures is reduced as much as possible. The solid electrolyte is produced by: heating a mixture solution to remove moisture, wherein the mixture solution includes a Zr raw material, a Y raw material, a P raw material, and a chelating agent, and the pH of the mixture solution is adjusted to 7.0 or less; firing the mixture in ambient atmosphere to obtain an oxide precursor; adding a Li raw material thereto; and further firing same in ambient atmosphere.
C01B 25/45 - Phosphates containing plural metal, or metal and ammonium
H01B 1/06 - Conductors or conductive bodies characterised by the conductive materialsSelection of materials as conductors mainly consisting of other non-metallic substances
H01B 1/08 - Conductors or conductive bodies characterised by the conductive materialsSelection of materials as conductors mainly consisting of other non-metallic substances oxides
H01B 13/00 - Apparatus or processes specially adapted for manufacturing conductors or cables
ABCD12±σ12±σ, where A to D, which indicate molar ratios, satisfy a prescribed relationship, the lattice constant ratio c/a is no more than 2.52, and the lattice volume is 1,505-1,522 Å3, and in which a substance having a triclinic crystal structure is included in a prescribed proportion relative to the rhombohedral NASICON-type structure. When obtaining the solid electrolyte, a mixed solution containing a Zr raw material, a Y raw material, a P raw material, and a chelating agent and prepared at a pH of no more than 7.0 is heated to remove moisture, the mixed solution is fired in an air atmosphere to obtain an oxide precursor, and a Li raw material is added thereto and further fired in an air atmosphere to produce the solid electrolyte.
C01B 25/45 - Phosphates containing plural metal, or metal and ammonium
H01B 1/06 - Conductors or conductive bodies characterised by the conductive materialsSelection of materials as conductors mainly consisting of other non-metallic substances
H01B 1/08 - Conductors or conductive bodies characterised by the conductive materialsSelection of materials as conductors mainly consisting of other non-metallic substances oxides
H01B 13/00 - Apparatus or processes specially adapted for manufacturing conductors or cables
In a brushless DC motor (1), the number of poles of a magnet is greater than or equal to four and greater than the number of slots, and a motor stator (4) of the brushless DC motor (1) has a two-split core structure. A teeth core (6) of the motor stator (4) is provided with narrow auxiliary pole teeth (63) disposed between main pole teeth (62), around which a coil is wound. Imbalance of the circumferential-direction magnetic flux distribution is eliminated, and cogging torque is reduced. The magnetic flux generated from the coils (5(U), 5(V), 5(W)) of each phase wound around the main pole teeth (62) and the magnetic flux of the magnet flow efficiently to the auxiliary pole teeth (63) via a cylindrical section (61) of the teeth core (6), and thus the electromotive force can be increased.
Provided is a dielectric material for ceramic capacitors, which has low temperature dependence and a high relative permittivity. A dielectric powder for ceramic capacitors, comprising a powder of a composite oxide having a garnet-type or garnet-type-like crystal structure containing essential elements of Li, La, Zr, and O, having Li site vacancies obtained by substituting some of the essential elements by an additive element different from the essential elements, and having an ion conductivity at room temperature of 1×10−5 S/cm or more, and a dielectric material for ceramic capacitors obtained by sintering the dielectric powder.
C04B 35/48 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on zirconium or hafnium oxides or zirconates or hafnates
In a garnet-type or garnet-like LLZ-based lithium ion-conductive oxide material, a high ion conductivity is realized. Specifically, the lithium ion-conductive oxide material contains each element of Li, La, Zr and O and at least an A element, the A element has a d electron, and is in a cation state where regular octahedral coordination preference in stabilization of an anion of oxygen by a ligand field becomes 50 kJ/mol or more, and a mole ratio A/La of the A element to La is 0.01 or more and 0.45 or less.
Provided is a dielectric material for ceramic capacitors which has low temperature dependence and a high relative dielectric constant. Provided are: a dielectric material for ceramic capacitors, characterized by comprising a composite oxide powder that has a garnet-type or garnet-like crystal structure which contains essential elements Li, La, Zr, and O, having Li site vacancies that are obtained by substitution of a portion of the essential elements with an additive element which differs from the essential elements, and having an ion conductivity at room temperature of at least 1×10-5 S/cm; and a dielectric material for ceramic capacitors obtained by sintering the dielectric material.
C04B 35/50 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on rare earth compounds
2222 emission-reducing manganese alloy and comprises a step (1) for heating a manganese ore to cause same to undergo hydrogen reduction to obtain a reduced manganese ore.
The present invention realizes an additive which can be added to the electrodes of a lithium-ion secondary battery and can improve the characteristics thereof. An additive for lithium ion secondary battery electrodes, characterized in that: the additive is a composite oxide having a crystal structure of a garnet type or a crystal structure that resembles a garnet type containing the elements Li, La, Zr, and O; for some of the elements, element Li is partially substituted with an element A that is different from said elements and is capable of forming Li site vacancies; the Li site vacancy ratio is 40 to 80%; and the ion conductivity at room temperature is at least 1×10–5 S/cm.
H01M 4/13 - Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulatorsProcesses of manufacture thereof
H01M 4/62 - Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
H01B 1/06 - Conductors or conductive bodies characterised by the conductive materialsSelection of materials as conductors mainly consisting of other non-metallic substances
H01B 1/08 - Conductors or conductive bodies characterised by the conductive materialsSelection of materials as conductors mainly consisting of other non-metallic substances oxides
12.
LITHIUM ION-CONDUCTIVE OXIDE MATERIAL AND ALL-SOLID-STATE LITHIUM SECONDARY BATTERY
The present invention enables a garnet-type or garnet-like LLZ lithium ion-conductive oxide material to have a high ion conductivity. The present invention specifically provides a lithium ion-conductive oxide material which contains Li, La, Zr and O elements, while also containing at least element A, wherein: the element A has a d electron, while being in the state of a positive ion that has an octahedral coordination selectivity of 50 kJ/mol or more during the stabilization by means of the ligand field of a negative ion of oxygen; and the molar ratio of the element A to La, namely, A/La is from 0.01 to 0.45.
H01B 1/06 - Conductors or conductive bodies characterised by the conductive materialsSelection of materials as conductors mainly consisting of other non-metallic substances
H01B 1/08 - Conductors or conductive bodies characterised by the conductive materialsSelection of materials as conductors mainly consisting of other non-metallic substances oxides
JOHNSON MATTHEY PUBLIC LIMITED COMPANY (United Kingdom)
Inventor
Aihara, Keigo
Itoh, Tomoharu
Konno, Hirofumi
Nagaoka, Shuhei
Yamada, Takashi
Abstract
2/g or more etc. was obtained. Further, by applying the oxygen storage and release material to the catalyst, it is possible to assist the purification of exhaust gas as it changes every instant in accordance with the driving conditions and possible to obtain a catalyst with a higher ability to remove harmful components of catalytic precious metals than before. In particular, it is possible to obtain an automotive exhaust gas purification system excellent in ability to remove CO, NOx, and HC.
F01N 3/10 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
F01N 3/08 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
14.
METHOD FOR TREATING TREATMENT LIQUID AND METHOD FOR TREATING EXHAUST GAS
This method for treating a treatment liquid comprises a removal step for removing impurities from a filtrate h to obtain a boron solution k, by circulating, through an anion exchange resin 11, the filtrate h as a treatment liquid containing boron, calcium, and a nitrous acid. Furthermore, this method for treating a treatment liquid comprises, prior to the removal step, a reduction step in which a reducing agent m containing a sulfamic acid is added to the filtrate h.
JOHNSON MATTHEY PUBLIC LIMITED COMPANY (United Kingdom)
Inventor
Aihara, Keigo
Itoh, Tomoharu
Konno, Hirofumi
Nagaoka, Shuhei
Yamada, Takashi
Abstract
23 3 and has an ionic conductivity of 2×10-55022/g or more. Furthermore, by applying the oxygen absorbing and releasing material to a catalyst, it is possible to obtain a catalyst which assists in the purification of exhaust gas that constantly changes according to the driving state and has a higher hazardous ingredient purification performance of precious metals than before. In particular, it is possible to obtain an automobile exhaust gas purification system having excellent CO, NOx and HC purification capacity.
F01N 3/10 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
16.
Ceria-zirconia-based composite oxide oxygen storage material, exhaust gas cleaning catalyst, and honeycomb structure for exhaust gas cleaning
F01N 3/10 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
B01J 23/63 - Platinum group metals with rare earths or actinides
B01D 53/94 - Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
B01J 21/06 - Silicon, titanium, zirconium or hafniumOxides or hydroxides thereof
17.
CERIA·ZIRCONIA-BASED COMPOSITE OXIDE OXYGEN ABSORPTION/RELEASE MATERIAL, EXHAUST GAS CLEANING CATALYST AND HONEYCOMB STRUCTURE FOR EXHAUST GAS CLEANING
Provided are the following: a ceria·zirconia-based composite oxide oxygen absorption/release material which has a rapid oxygen absorption/release rate and which has an OSC function capable of responding rapidly to an exhaust gas composition in which there are no large fluctuations in terms of atmosphere but which changes rapidly close to the stoichiometric air-fuel ratio; an exhaust gas cleaning catalyst; and a honeycomb structure for exhaust gas cleaning. This oxygen absorption/release material is a ceria·zirconia-based composite oxide and is characterized by having a composition whereby the molar ratio of cerium and zirconium is such that cerium / (cerium + zirconium) is 0.33-0.90 and the ion conductance, as measured using an alternating current impedance method, is 1×10-5 S/cm or more at 400°C, and in that one or more rare earth metal ions M selected from among Sm3+, Eu3+, Pr3+, Gd3+ and Dy3+, each of which has a coordination number of more than 7.0, are contained at a quantity of 0.5-15 mol.% relative to the total quantity of cations.
F01N 3/10 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
18.
PROCESS FOR PRODUCING VANADIUM-DIOXIDE-BASED HEAT-STORAGE MATERIAL
A process for producing a VO2-based heat-storage material, characterized by comprising a step (a) in which V2O5 is mixed with a carbon material and a step (b) in which the resultant mixture is heated in an inert gas atmosphere, the mixing proportion of the V2O5 to the carbon material in the mixing step (a) being in the range of 1:(0.41-0.54) in terms of the molar ratio of V2O5:(carbon atoms in the carbon material), and the heating temperature in the heating step (b) being above 900ºC but lower than 1,542ºC. Due to this, a process is provided by which a VO2-based heat-storage material having sufficient heat storage properties is easily mass-produced at low cost.
A ceria-zirconia-based composite oxide which has a crystal phase of the composite oxide of a single solid-solution phase even after exposure to a high temperature over a long time and has a small change in mode pore diameter and in pore volume before and after a high temperature durability test is provided. This is realized by a ceria-zirconia-based composite oxide having a chemical composition, by mass ratio, of zirconia: 30% to 80%, a total of oxides of one or more elements selected from yttrium and rare earth elements having atomic number 57 to 71 (except cerium and promethium): 0% to 20%, and a balance of ceria and unavoidable impurities, in which ceria-zirconia-based composite oxide, the composite oxide is deemed to be a single solid-solution phase in an X-ray diffraction pattern after a durability test which heats the oxide in the atmosphere at a temperature condition of 1100° C. for 5 hours and has a ratio (b/a) of mode pore diameter (b) of a pore distribution after a durability test which heats the oxide in the atmosphere at a temperature condition of 1100° C. for 5 hours to the mode pore diameter (a) before the durability test of 1.0≤b/a≤2.0 and/or has a ratio (d/c) of pore volume (d) after a durability test which heats the oxide in the atmosphere at a temperature condition of 1100° C. for 5 hours to the pore volume (c) before the durability test of 0.20≤d/c≤1.00.
The problem of the present invention is to provide composite particles with which the charge-discharge cycle properties of a nonaqueous electrolyte secondary cell such as a lithium ion secondary cell can be improved, and a method for producing the particles. These composite particles of a silicon phase-containing substance and graphite comprise multiple scale-like graphite particles and silicon phase-containing particles. The multiple scale-like graphite particles are disposed in layers. The silicon phase-containing particles comprise a silicon phase and a non-silicon phase. Moreover, the silicon phase-containing particles are inserted between the multiple scale-like graphite particles. When an electrode having an electrode density of 1.70 + 0.02 g/cm3 is produced from the composite particles of a silicon phase-containing substance and graphite, the ratio of the "intensity I (110) of the peak attributed to the (110) plane" to the "intensity I (004) of the peak attributed to the (004) plane" in the X-ray diffraction image of the electrode is preferably within a range of 0.0010 to 0.0300.
Provided is a ceria-zirconia mixed oxide which has small changes in mode pore diameter and/or pore volume before and after a high temperature tolerance test. A CZ mixed oxide which has a component composition, in mass ratio, of 30 to 80% of zirconia, 0 to 20% of a total of one type of more of oxides of the third element selected from yttrium and rare earth elements of atomic number of 57 to 71 (except cerium and promethium), and a balance of ceria and unavoidable impurities, wherein the mixed oxide is characterized in that the crystal phase after a tolerance test of heating the same for five hours at a temperature condition of 1100°C atmosphere is solid solution phase only, a ratio (b/a) of mode diameter (b) of pore distribution after the tolerance test with respect to mode diameter (a) before the tolerance test is 1.0 to 2.0, and/or a ratio (d/c) of pore volume (d) after the tolerance test with respect to pore volume (c) before the tolerance test is 0.20 to 1.00.
A raw material alloy for a R-T-B-based magnet (wherein R represents at least one of rare earth elements including Y; and T represents at least one of transition elements including Fe as the essential element), said alloy containing a R2T14B phase as the main phase and R-rich phases in each of which R is concentrated, wherein the distance between the R-rich phases is 10 μm or more and the ellipsoidal aspect ratio of each of the R-rich phases is 0.6 or more. A fine powder produced by milling the raw material alloy has excellent fluidability, and enables the production of a sintered magnet having a complicated shape. When the raw material alloy for a R-T-B-based magnet contains Dy and/or Tb as R, it is desirable that the percentage ratio (A/B) produced by dividing the total concentration (A) of Dy and Tb in the main phase by the total concentration (B) of Dy and Tb in each of the R-rich phases is 180% or more. It is also desirable that the percentage ratio (D/C) produced by dividing the concentration (D) of an impurity in each of the R-rich phases by the concentration (C) of the impurity in the main phase is 230% or more.
B22F 1/00 - Metallic powderTreatment of metallic powder, e.g. to facilitate working or to improve properties
B22F 9/08 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
C22C 33/02 - Making ferrous alloys by powder metallurgy
H01F 1/057 - Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
H01F 1/06 - Magnets or magnetic bodies characterised by the magnetic materials thereforSelection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys in the form of particles, e.g. powder
23.
STARTING-MATERIAL ALLOY FOR R-T-B TYPE MAGNET AND PROCESS FOR PRODUCING SAME
A starting-material alloy for R-T-B type magnets which comprises an R2T14B phase as the main phase and an R-rich phase having an increased concentration of R, wherein the main phase comprises dendrite trunks and secondary dendrite arms that branch off from the dendrite trunks, the volume proportion of the region where the secondary dendrite arms have generated being 2-60%. Thus, excellent coercive force in the R-T-B type sintered magnet can be ensured even when the addition amount of a heavy rare-earth element is reduced. It is preferable that the alloy should have a spacing between grains of the R-rich phase of 3.0 μm or less and a volume proportion of chill crystals of 1% or less. Furthermore, it is preferable that the spacing between the secondary dendrite arms should be 0.5-2.0 μm and the R-rich phase should have an aspect ratio in terms of corresponding ellipse of 0.5 or less.
B22F 9/08 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
C22C 33/02 - Making ferrous alloys by powder metallurgy
H01F 1/057 - Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
H01F 1/08 - Magnets or magnetic bodies characterised by the magnetic materials thereforSelection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together
H01F 41/02 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformersApparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils or magnets
24.
ALLOY PARTICLES, ELECTRODE, NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, AND METHOD FOR PRODUCING ALLOY PARTICLES
The objective of the present invention is to provide a negative electrode material for nonaqueous electrolyte secondary batteries, which has a charge/discharge cycle life equal to or longer than those of conventional negative electrode materials for nonaqueous electrolyte secondary batteries, and which has a charge/discharge capacity larger than those of conventional negative electrode materials for nonaqueous electrolyte secondary batteries. Each alloy particle of the present invention comprises a metal silicide phase and silicon phases. The metal silicide phase is formed of silicon atoms and at least two kinds of metal atoms. The silicon phases are mainly formed of silicon atoms. The silicon phases are dispersed in the metal silicide phase. The silicon phases account for 20% by mass or more of the total mass of each alloy particle. Meanwhile, silicon atoms account for 85% by mass or less of the total mass of each alloy particle.
Provided is an automatic operation system capable of automatically operating any device without modification to the device itself. An automatic operation system for automatically executing a series of operation commands to a manufacturing device (50), the automatic operation system comprising: an operation procedure creation unit (101) for generating a series of operation commands; an operation procedure execution unit (102) for executing the series of operation commands; an operation signal output unit (103) for transmitting to the manufacturing device (50) a signal corresponding to an operation signal of an input device of the manufacturing device (50) on the basis of the executed operation command; an image information acquisition unit (104) for acquiring the information of an image displayed on a display device (52) of the manufacturing device (50) and performing image recognition on the basis of the executed operation command; and an operation initial settings unit (105) for acquiring the information of the manufacturing device (50) as required for generating the series of operation commands, assigning an ID to the information required for setting each of the operation commands, and registering the ID.
The present invention addresses the problem of providing silicon-graphite composite particles capable of further improving the charge/discharge-cycle characteristics of a nonaqueous electrolyte secondary cell such as a lithium-ion secondary cell, and a method for manufacturing the particles. These silicon-graphite composite particles (100) are provided with a plurality of scaly graphite particles (120) and silicon particles (110). The plurality of scaly graphite particles are aligned in layers. The silicon particles are held between the plurality of scaly graphite particles. When an electrode having an electrode density of 1.70±0.02 g/cm3 is prepared from the silicon-graphite composite particles, the ratio of the intensity I (004) of the peak belonging to surface (004) in relation to the intensity I (110) of the peak belonging to surface (110) for the electrode in an X-ray diffraction image should preferably be within a range of 0.0010 to 0.0300.
The purpose of the present invention is to provide composite graphitic particles that can form a dense conductive network in an electrode when forming an electrode of a nonaqueous electrolyte secondary battery such as a lithium ion secondary battery or the like, and to provide a method for manufacturing the same. These composite graphitic particles can include graphite, conductive carbonaceous fine particles, and non-graphitic carbon. The graphite is preferably natural graphite, and more preferably is a spherical graphite granule formed by aggregating a plurality of natural graphite flakes. Furthermore, the graphite is preferably smoothed. The conductive carbonaceous fine particles are directly adhered to the graphite. The non-graphitic carbon is at least partially adhered to the conductive carbonaceous fine particles and the graphite. Furthermore, when a predetermined external force is applied to the composite graphitic particles, the conductive carbonaceous fine particles detach from the graphite.
Provided is a method for producing an alloy piece for a rare earth magnet by feeding a molten alloy to an outer peripheral surface of a cooling roll (3) and solidifying the same to cast an ingot (4) and then breaking the ingot (4), wherein subjecting the outer peripheral surface of the cooling roll (3) to a blast treatment and removing adhered matter from the outer peripheral surface of the cooling roll (3) makes it possible to reduce a variance in the crystal structure in the resulting alloy piece. Preferably, a projecting material that has a median diameter D50 of 3.0 mm or lower and includes one or more types from among a metallic projecting material, non-metallic projecting material, and a resin-based projecting material is used as a projecting material when implementing the blast treatment. Also, preferably, the discharge pressure is 0.10-1.00 MPa when implementing the blast treatment.
B22D 11/06 - Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
B22D 11/00 - Continuous casting of metals, i.e. casting in indefinite lengths
29.
METHOD FOR MANUFACTURING ALLOY PIECES AND APPARATUS FOR SORTING ALLOY PIECES
A method for manufacturing alloy pieces, wherein strip-cast alloy pieces are supplied to a comb-shaped sieve (13) having slitted gaps (16) formed by a plurality of teeth (15) disposed at a predetermined pitch (W), the sieve (13) is caused to vibrate, and the alloy pieces are sorted into those that pass through the slitted gaps (16) and those remaining on the sieve (13), making it possible to efficiently sort thin alloy pieces and irregularly shaped alloy pieces, and manufacture alloy pieces without having irregularly shaped alloy pieces mixed therewith. If the average thickness of the alloy pieces supplied to the comb-shaped sieve (13) is T, the pitch (W) between the teeth (15) of the comb-shaped sieve (13) is preferably 10T or less.
B07B 1/12 - Apparatus having only parallel elements
B07B 1/28 - Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting, or wobbling screens
B07B 1/46 - Constructional details of screens in generalCleaning or heating of screens
B22D 11/06 - Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
B22F 9/04 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using physical processes starting from solid material, e.g. by crushing, grinding or milling
H01F 41/02 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformersApparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils or magnets
An R-T-B-Ga-based magnet material alloy (provided that R is at least one type of rare-earth element including Y, and T at least one type of transition element requiring Fe), wherein the alloy comprises a R2T14B phase (3) being the main phase and R-rich phases (1 and 2) in which R is concentrated, and by making the Ga content ratio (% by mass) of a non-crystal phase (1) within the R-rich phase higher than the Ga content ratio (% by mass) of a crystal phase (2) within the R-rich phase, the magnetic property of a rare-earth magnet used as a material is able to be improved and magnetic property variance is reduced. An average thickness of the R-T-B-Ga-based magnet material alloy no less than 0.1mm and no greater than 1.0mm is preferable in order to minimize formation of chill crystals and α-Fe crystallization.
H01F 1/057 - Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
When casting an ingot by heating a starting material to form a molten R-T-B based alloy and by solidifying the molten alloy as a result of supplying same to a rapid cooling roll, it is possible to inhibit the variation in the crystalline structure of the obtained alloy piece due to the rapid cooling roll wearing down by adjusting the temperature of the molten alloy in accordance with the arithmetic average roughness (Ra) of the surface of the rapid cooling roll and/or the average interval (Sm) between concaves and convexes, and by controlling the R-rich phase interval in the crystalline structure of the obtained alloy piece to a target value. When adjusting the temperature of the molten alloy in accordance with the arithmetic average roughness (Ra) and/or the average interval (Sm) between concaves and convexes, it is preferred that the temperature of the molten alloy is adjusted in accordance with the equation Δt=-7×(|ΔRa|×|ΔSm|)0.5/α, wherein Δt represents the degree (°C) by which the temperature of the molten alloy is adjusted, ΔRa represents the amount (μm) by which the arithmetic average roughness (Ra) changes, ΔSm represents the amount (μm) by which the average interval (Sm) between the concaves and convexes changes, and α represents a coefficient of correlation.
B22D 11/06 - Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
B22D 11/00 - Continuous casting of metals, i.e. casting in indefinite lengths
An alloy piece production device (1) comprising: a crystallinity controlling means (2) that controls the alloy crystal structure of provided alloy pieces, in a desired state; a cooling means (3) that cools the alloy pieces discharged from the crystallinity controlling means (2); and a chamber that maintains these in a decompressed or inert gas atmosphere. Heat processing can be uniformly applied over long periods to the alloy pieces immediately after ingots have been crushed, because the crystallinity controlling means (2) has: a rotation-type heating drum (21) having a cylindrical shape and which heats the supplied alloy pieces; and a switching means (23) that switches between retaining and discharging the alloy pieces supplied to the inside wall side of the heating drum (21). It is desirable for the heating drum (21) to have a brushing-up blade plate (22) that brushes up the alloy pieces supplied to the inside wall side in line with the rotation of the heating drum (21).
B22F 1/00 - Metallic powderTreatment of metallic powder, e.g. to facilitate working or to improve properties
B22F 9/04 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using physical processes starting from solid material, e.g. by crushing, grinding or milling
A modified natural graphite material that provides a negative electrode plate with excellent adhesion between a negative electrode composite material and a current collector has a circularity of 0.92-1.0, and the incidence angle dependency S60/0 of the peak intensity ratio obtained from the C-K end X-ray absorption spectrum of a powder measured using the emitted light as an excitation light source is 0.5-0.7. Preferably at least one of the following conditions is satisfied: absolute specific gravity is 2.25 g/cm3 or higher, tap density is 1.0-1.4 g/cm3, and the linseed oil absorption is 20-50 cm3/100 g. A carbonaceous material may be adhered to at least a portion of the surface thereof.
The disclosed anode material, which is provided as the anode material of a low-cost non-aqueous electrolyte secondary battery, and which suppresses the amount of high-cost Co that is used, contains three types of powdered material, which respectively are alloy material A, alloy material B, and a conductive material. Alloy material A contains an alloy having a CoSn2 structure containing Co, Sn, and Fe, and the amount of Sn contained is at least 70.1 mass% and less than 82.0 mass% of alloy material A. Alloy material B contains Co3Sn2, has a lower discharge capacity than alloy material A, and the ratio (RB) of the mass of alloy material B to the total of the mass of alloy material A and the mass of alloy material B is greater than 5.9% and less than 27.1%. The amount of conductive material contained is at least 7 mass% and no greater than 20 mass% of the total of alloy material A, alloy material B, and the conductive material. The exothermic onset temperature obtained by means of differential scanning calorimetry of this anode material is less than 375.4°C.
Disclosed is a natural graphite particle forming a negative electrode active substance for a non-aqueous electrolyte secondary battery, characterized by having a circularity of 0.93 - 1.0 and a surface roughness of 1.5% of the largest particle diameter. Also disclosed is a method for producing modified particles of natural graphite in which grinding and spheronizing are carried out by applying an impact force to the natural graphite particles and there is a process for obtaining intermediate particles with a circularity of 0.93 - 1.0 as well as a process for obtaining the modified natural graphite particles by performing surface smoothing using mechanical milling of the intermediate particles obtained.
Provided is a negative electrode material for a nonaqueous electrolyte secondary battery. Said negative electrode material is capable of improving the cycle characteristics of a lithium ion secondary battery. Also provided is a method for manufacturing the provided negative electrode material. Said negative electrode material contains at least two types of powdered alloy material. One powdered alloy material (A) contains cobalt, tin, and iron and does not contain titanium. The other powdered alloy material (B) contains iron, titanium, and tin and constitutes between 10% and 30% of the total mass of both powdered alloy materials.
H01M 4/38 - Selection of substances as active materials, active masses, active liquids of elements or alloys
B22F 9/04 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using physical processes starting from solid material, e.g. by crushing, grinding or milling
B22F 9/08 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
A mixed carbon material comprising a carbon material (A) and a carbon material (B), the mixed carbon material being suitable for use as a negative-electrode material with which it is possible to provide a nonaqueous secondary battery in which the negative electrode has a high capacity and high charge acceptance and which has a low irreversible capacity. The carbon material (A) and the carbon material (B) each comprises a core material comprising a graphite powder and a surface carbon substance adherent to and/or covering at least some of the surface of the graphite powder, the surface carbon substance comprising amorphous carbon and/or turbostratic carbon. The compressive density of the carbon material (A) alone is 1.80-1.90 g/cm3, that of the carbon material (B) alone is 1.45-1.65 g/cm3, and that of the mixed carbon material is 1.75-1.84 g/cm3. The carbon material (B) has an average particle diameter which is 14 µm or smaller and is smaller than the average particle diameter of the carbon material (A). The carbon material (A) and the carbon material (B) have specific surface areas of 4 m2/g or smaller and 6 m2/g or smaller, respectively.
Disclosed is a mixed carbon material that is a negative electrode material which can suppress a lowering in charge acceptability and high-temperature storage stability in a high-capacitance and high-density electrode. The mixed carbon material contains a carbon material A comprising a core material of a graphite powder and an amorphous carbon and/or carbon having a turbostratic structure deposited on or covering the surface of the core material and a carbon material B of a graphite powder. The compressibility measured as a packed material density (g/cm3) by filling 1.00 g of a material into a cylindrical mold having an inner diameter of 15 mm, pressing the material at a pressure of 8.7 kN, and reducing the pressure to 0.15 kN is 1.60 to 1.78 g/cm3 for the carbon material A and 1.75 to 1.85 g/cm3 for the carbon material B. The compressibility of the carbon material A is smaller than that of the carbon material B, and the mixing ratio (carbon material A/carbon material B) is 1 to 9 in terms of mass ratio.
H01M 4/58 - Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFySelection of substances as active materials, active masses, active liquids of polyanionic structures, e.g. phosphates, silicates or borates
Disclosed is a hydrogen storage alloy which can be used as a material for a negative electrode of a nickel-hydrogen battery to be used in a hybrid vehicle, specifically as a power source of a traction motor for a vehicle body. The alloy is an AB5-type hydrogen storage alloy having a CaCu5-type crystalline structure and is represented by the general formula: RNiaCobAlcMnd (R: a mixture of rare earth metals), wherein a, b, c and d satisfy the requirements represented by the following formulae: 4.15≤a≤4.4, 0.15≤b≤0.35, 1≤c/d≤1.7 and 5.25≤a+b+c+d≤5.45.
B60K 6/28 - Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the electric energy storing means, e.g. batteries or capacitors
H01M 4/38 - Selection of substances as active materials, active masses, active liquids of elements or alloys
41.
CLEANING APPARATUS FOR ELECTRIC FURNACE BY-PRODUCT GAS RECOVERY DUCT
A cleaning apparatus for electric furnace by-product gas recovery duct that is capable of removing any dust deposited in a gas duct from precooling column to Venturi scrubber at the time of dust removal from by-product gas generated in reducing refining of alloy iron, etc. by means of a dust removing apparatus including the Venturi scrubber without the need to halt the operation of the electric furnace. Accordingly, at a gas-outlet-side end portion of traverse duct extending from precooling washing column to Venturi scrubber, there is provided a traverse duct deposit dust cleaning lance which is inserted through a gas seal portion in the traverse duct in a fashion permitting forward and back traveling and which at its proximal end is fitted with a pressurized water supply portion and at its distal end is fitted with a pressurized water jetting nozzle. Just above region of the traverse duct where the Venturi scrubber is fitted, there is provided a vertical duct deposit dust cleaning lance which is inserted through a gas seal portion in a vertical duct extending from the traverse duct to the Venturi scrubber in a fashion permitting forward and back traveling and which at its proximal end is fitted with a pressurized water supply portion and at its distal end is fitted with a pressurized water jetting nozzle.
patents
