# US 2013/0280613 A1 · Electrode thin film, all-solid lithium battery, and method of manufacturing electrode film

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- Number: US 2013/0280613 A1
- Document ID: US20130280613A1
- Status: Published application
- Kind: A1
- Application number: 13/885,259
- Filed: 2011-11-15
- Published: 2013-10-24
- Earliest claimed: 2010-11-15
- Assignees: Toyota Jidosha Kabushiki Kaisha
- Inventors: Jun Akedo; Daniel Popovici; Hideyuki Nagai
- Web page: https://patentgrep.com/patent/US20130280613A1

## CPC

- H01M 4/0421: {involving vapour deposition}
- C01G 51/42: containing alkali metals, e.g. LiCoO2
- H01M 4/0402: {Methods of deposition of the material}
- H01M 4/0419: {involving spraying}
- H01M 4/06: Electrodes for primary cells
- H01M 4/131: Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
- H01M 4/1391: of electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
- H01M 4/485: of mixed oxides or hydroxides for inserting or intercalating light metals, e.g. LiTi2O4 or LiTi2OxFy (H01M4/505, H01M4/525 take precedence)
- H01M 4/525: of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
- H01M 6/18: with solid electrolyte
- H01M 10/0525: Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
- H01M 10/0562: Solid materials
- C01P 2006/10: Solid density
- C01P 2006/40: Electric properties
- H01M 4/0404: {by coating on electrode collectors}
- H01M 4/0483: {by methods including the handling of a melt (H01M4/0438, take precedence)}
- H01M 2004/021: {Physical characteristics, e.g. porosity, surface area}
- H01M 2004/028: {Positive electrodes}
- H01M 2300/002: Inorganic electrolyte
- H01M 2300/0068: inorganic
- Y02E 60/10: Energy storage using batteries
- Y02P 70/50: Manufacturing or production processes characterised by the final manufactured product
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- C01G: COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F (metal hydrides {monoborane, diborane or addition complexes thereof} C01B6/00; salts of oxyacids of halogens C01B11/00; peroxides, salts or peroxyacids C01B15/00; thiosulfates, dithionites, polythionates C01B17/64; compounds containing selenium, or tellurium C01B19/00; binary compounds of nitrogen with metals C01B21/06; azides C01B21/08; {compounds containing nitrogen, other non-metals and metal C01B21/082}; metal amides C01B21/092; nitrites C01B21/50; {compounds of noble gases C01B23/0005}; phosphides C01B25/08; salts of oxyacids of phosphorus C01B25/16; carbides C01B32/90; compounds containing silicon C01B33/00; compounds containing boron C01B35/00; compounds having molecular sieve properties but not having base-exchange properties C01B37/00; compounds having molecular sieve and base-exchange properties, e.g. crystalline zeolites, C01B39/00; cyanides C01C3/08; salts of cyanamide C01C3/16; thiocyanates C01C3/20)
- C01P: INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS

## Abstract

An electrode thin film to be used in an all-solid lithium battery is formed predominantly of lithium cobaltate and has a density larger than or equal to 3.6 g/cm3 and smaller than or equal to 4.9 g/cm3.

## Claims

### Claim 1

An electrode thin film to be used in an all-solid lithium battery, characterized in that:
the electrode thin film is formed predominantly of lithium cobaltate and has a density larger than or equal to 3.6 g/cm3 and smaller than or equal to 4.9 g/cm3.

### Claim 2 (depends on 1)

The electrode thin film according to claim 1, wherein the electrode thin film is formed using one selected from the group consisting of aerosol deposition, gas deposition, flame spraying, and cold spraying.

### Claim 3 (depends on 2)

The electrode thin film according to claim 2, wherein a pressure when the electrode thin film is formed is higher than 100 Pa and smaller than or equal to 400 Pa.

### Claim 4 (depends on 1, 2, 3)

The electrode thin film according to any one of claims 1 to 3, wherein a percentage of lithium cobaltate in the electrode thin film is higher than or equal to 90 mol %.

### Claim 5 (depends on 1, 2, 3, 4)

An all-solid lithium battery characterized by comprising:
a positive electrode active material layer that contains a positive electrode active material;
a negative electrode active material layer that contains a negative electrode active material; and
a solid electrolyte layer that is formed between the positive electrode active material layer and the negative electrode active material layer, wherein
the positive electrode active material layer is the electrode thin film according to any one of claims 1 to 4.

### Claim 6 (depends on 5)

The all-solid lithium battery according to claim 5, wherein the all-solid lithium battery is a secondary battery.

### Claim 7

A method of manufacturing an electrode thin film to be used in an all-solid lithium battery, characterized by comprising:
forming an electrode thin film that is formed predominantly of lithium cobaltate and that has a density larger than or equal to 3.6 g/cm3 and smaller than or equal to 4.9 g/cm3.

### Claim 8 (depends on 7)

The method according to claim 7, wherein, when the electrode thin film is formed, the electrode thin film is formed using one selected from the group consisting of aerosol deposition, gas deposition, flame spraying, and cold spraying.

### Claim 9 (depends on 7, 8)

The method according to claim 7 or 8, wherein a pressure used when the electrode thin film is formed is higher than 100 Pa and smaller than or equal to 400 Pa.

### Claim 10 (depends on 7, 8, 9)

The method according to any one of claims 7 to 9, wherein a percentage of lithium cobaltate in the electrode thin film is higher than or equal to 90 mol %.