# US 10,483,530 B2 · Cathode active material and fluoride ion battery

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- Number: US 10,483,530 B2
- Document ID: US10483530B2
- Status: Granted
- Kind: B2
- Application number: 16/157,778
- Filed: 2018-10-11
- Published: 2019-04-25
- Granted: 2019-11-19
- Earliest claimed: 2018-10-11
- Assignees: Toyota Jidosha Kabushiki Kaisha
- Applicants: Toyota Jidosha Kabushiki Kaisha
- Inventors: Hidenori Miki
- Web page: https://patentgrep.com/patent/US10483530B2

## CPC

- H01M 4/364: {as mixtures}
- H01M 4/5815: {Sulfides}
- H01M 4/582: {Halogenides}
- H01M 10/05: Accumulators with non-aqueous electrolyte (H01M10/39 takes precedence)
- H01M 10/0566: Liquid materials
- H01M 2004/027: {Negative electrodes}
- H01M 2004/028: {Positive electrodes}
- Y02E 60/10: Energy storage using batteries
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

A main object of the present disclosure is to provide a cathode active material that is used in a fluoride ion battery and is capable of being charged and discharged at a high potential. The present disclosure achieves the object by providing a cathode active material used in a fluoride ion battery, the cathode active material comprising: a Ce element, a S element, and a F element; and a composition represented by CeSF.

## Claims

### Claim 1

A cathode active material used in a fluoride ion battery, the cathode active material comprising:
a Ce element, a S element, and a F element; and
a composition represented by CeSF.

### Claim 2

A cathode active material used in a fluoride ion battery, the cathode active material comprising:
a Ce element, a S element, and a F element; and
a crystal phase having a peak at a position of 2θ=25.4°±0.5°, 31.2°±0.5°, 41.0°±0.5°, 45.0°±0.5°, and 52.6°±0.5° in an X-ray diffraction measurement using a CuKα ray.

### Claim 3 (depends on 1)

A fluoride ion battery comprising:
a cathode active material layer, an anode active material layer, and an electrolyte layer formed between the cathode active material layer and the anode active material layer;
wherein the cathode active material layer contains the cathode active material according to claim 1.

### Claim 4 (depends on 2)

A fluoride ion battery comprising:
a cathode active material layer, an anode active material layer, and an electrolyte layer formed between the cathode active material layer and the anode active material layer;
wherein the cathode active material layer contains the cathode active material according to claim 2.