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1. WO2020138014 - α-ALUMINA, SLURRY, POROUS FILM, LAMINATED SEPARATOR, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND METHOD FOR PRODUCING SAME

Publication Number WO/2020/138014
Publication Date 02.07.2020
International Application No. PCT/JP2019/050452
International Filing Date 24.12.2019
IPC
C01F 7/02 2006.01
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
FCOMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE EARTH METALS
7Compounds of aluminium
02Aluminium oxide; Aluminium hydroxide; Aluminates
C01F 7/06 2006.01
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
FCOMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE EARTH METALS
7Compounds of aluminium
02Aluminium oxide; Aluminium hydroxide; Aluminates
04Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom
06by treating aluminous minerals with alkali hydroxide
H01M 4/13 2010.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4Electrodes
02Electrodes composed of, or comprising, active material
13Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
H01M 4/139 2010.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4Electrodes
02Electrodes composed of, or comprising, active material
13Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
139Processes of manufacture
H01M 10/0566 2010.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10Secondary cells; Manufacture thereof
05Accumulators with non-aqueous electrolyte
056characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
0564the electrolyte being constituted of organic materials only
0566Liquid materials
H01M 2/16 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
2Constructional details, or processes of manufacture, of the non-active parts
14Separators; Membranes; Diaphragms; Spacing elements
16characterised by the material
CPC
C01F 7/02
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
FCOMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
7Compounds of aluminium
02Aluminium oxide; Aluminium hydroxide; Aluminates
C01F 7/06
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
FCOMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
7Compounds of aluminium
02Aluminium oxide; Aluminium hydroxide; Aluminates
04Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom
06by treating aluminous minerals ; or waste-like raw materials; with alkali hydroxide ; , e.g. leaching of bauxite according to the Bayer process
H01M 10/0566
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10Secondary cells; Manufacture thereof
05Accumulators with non-aqueous electrolyte
056characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
0564the electrolyte being constituted of organic materials only
0566Liquid materials
H01M 4/13
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4Electrodes
02Electrodes composed of or comprising active material
13Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
H01M 4/139
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4Electrodes
02Electrodes composed of or comprising active material
13Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
139Processes of manufacture
H01M 50/409
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
50Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
40Separators; Membranes; Diaphragms; Spacing elements inside cells
409Separators, membranes or diaphragms characterised by the material
Applicants
  • 住友化学株式会社 SUMITOMO CHEMICAL COMPANY, LIMITED [JP]/[JP]
Inventors
  • 奈須 義総 NASU, Tomomichi
  • 坂元 俊介 SAKAMOTO, Syunsuke
  • 尾崎 裕謙 OZAKI, Hirotaka
Agents
  • 特許業務法人アスフィ国際特許事務所 USFI PATENT ATTORNEYS INTERNATIONAL OFFICE
Priority Data
2018-24292426.12.2018JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) α-ALUMINA, SLURRY, POROUS FILM, LAMINATED SEPARATOR, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND METHOD FOR PRODUCING SAME
(FR) ALPHA-ALUMINE, BOUILLIE, FILM POREUX, SÉPARATEUR STRATIFIÉ ET BATTERIE SECONDAIRE À ÉLECTROLYTE NON AQUEUX ET SON PROCÉDÉ DE PRODUCTION
(JA) αアルミナ、スラリー、多孔膜、積層セパレータ、並びに非水電解液二次電池及びその製造方法
Abstract
(EN)
The purpose of the present invention is to provide alumina to be used in a slurry capable of suppressing irregularities on the surface of a porous film. The present invention is an α-alumina having a crystallite size of 95 nm or less and a lattice strain of 0.0020 or less determined by Rietveld refinement. The BET specific surface area of the α-alumina by the nitrogen adsorption method is preferably 10 m2/g or less. Also, the volume-based cumulative 50% equivalent particle size D50 of the α-alumina is preferably 2 μm or less.
(FR)
Le but de la présente invention est de fournir de l'alumine destinée à être utilisée dans une bouillie susceptible de supprimer des irrégularités sur la surface d'un film poreux. La présente invention est une alpha-alumine ayant une taille de cristallite de 95 nm ou moins et une contrainte de réseau de 0,0020 ou moins, déterminée par affinement de Rietveld. La surface spécifique BET de l'alpha-alumine par le procédé d'adsorption d'azote est de préférence inférieure ou égale à 10 m2/g. De plus, la taille de particule équivalente à 50 % cumulée en volume (D50) de l'alpha-alumine est de préférence de 2 µm ou moins.
(JA)
多孔膜の表面の凹凸を抑制できるスラリーに用いるアルミナを提供することを目的とする。本発明は、リートベルト解析により求まる結晶子サイズが95nm以下であり、格子ひずみが0.0020以下であるαアルミナである。前記αアルミナの窒素吸着法によるBET比表面積が10m2/g以下であることが好ましい。また、前記αアルミナの体積基準の累積50%相当粒子径D50が2μm以下であることも好ましい。
Also published as
Latest bibliographic data on file with the International Bureau