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1. WO2021123151 - ALKALI METAL ELECTRODES AND METHODS FOR PREPARING THE SAME

Publication Number WO/2021/123151
Publication Date 24.06.2021
International Application No. PCT/EP2020/087004
International Filing Date 18.12.2020
IPC
H01M 4/04 2006.1
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
04Processes of manufacture in general
H01M 4/134 2010.1
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
134Electrodes based on metals, Si or alloys
H01M 4/1395 2010.1
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
1395of electrodes based on metals, Si or alloys
H01M 4/36 2006.1
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
36Selection of substances as active materials, active masses, active liquids
H01M 10/42 2006.1
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10Secondary cells; Manufacture thereof
42Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
CPC
H01M 10/4235
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10Secondary cells; Manufacture thereof
42Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
4235Safety or regulating additives or arrangements in electrodes, separators or electrolyte
H01M 4/0416
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
04Processes of manufacture in general
0402Methods of deposition of the material
0416involving impregnation with a solution, dispersion, paste or dry powder
H01M 4/0445
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
04Processes of manufacture in general
0438by electrochemical processing
044Activating, forming or electrochemical attack of the supporting material
0445Forming after manufacture of the electrode, e.g. first charge, cycling
H01M 4/134
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
134Electrodes based on metals, Si or alloys
H01M 4/1395
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
1395of electrodes based on metals, Si or alloys
H01M 4/366
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
36Selection of substances as active materials, active masses, active liquids
362Composites
366as layered products
Applicants
  • ARKEMA FRANCE [FR]/[FR]
  • OXIS ENERGY LIMITED [GB]/[GB]
Inventors
  • LAWTON, Samuel
  • DIBDEN, James
  • PLÉE, Dominique
Agents
  • BANDPAY & GREUTER
Priority Data
19306748.520.12.2019EP
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) ALKALI METAL ELECTRODES AND METHODS FOR PREPARING THE SAME
(FR) ÉLECTRODES DE MÉTAL ALCALIN ET PROCÉDÉS DE PRÉPARATION ASSOCIÉS
Abstract
(EN) The invention relates to a method for modifying an electrode comprising an alkali metal, comprising: - casting a salt solution comprising at least one salt comprising an alkaline ion and a solvent on the electrode; - casting a fluoropolymer solution comprising at least one fluoropolymer and a solvent on the electrode; and - drying the electrode. The invention also relates to an electrode comprising an alkali metal at least partly covered by a solid electrolyte interphase, said solid electrolyte interphase having atomic ratios of carbon, fluorine and sulfur atoms of 1 C : 0.15 to 0.80 F: 0.02 to 0.30 S.
(FR) L'invention concerne un procédé de modification d'une électrode comprenant un métal alcalin, comprenant : - la coulée d'une solution saline comprenant au moins un sel comprenant un ion alcalin et un solvant sur l'électrode ; - la coulée d'une solution de fluoropolymère comprenant au moins un fluoropolymère et un solvant sur l'électrode ; et - le séchage de l'électrode. L'invention concerne également une électrode comprenant un métal alcalin au moins partiellement recouvert par une interphase d'électrolyte solide, ladite interphase d'électrolyte solide ayant des rapports atomiques d'atomes de carbone, de fluor et de soufre de 1 C : 0,15 à 0,80 F : 0,02 à 0,30 S.
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