# US 2014/0193697 A1 · Aqueous electrolyte battery

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- Number: US 2014/0193697 A1
- Document ID: US20140193697A1
- Status: Published application
- Kind: A1
- Application number: 14/204,689
- Filed: 2014-03-11
- Published: 2014-07-10
- Earliest claimed: 2010-05-25
- Assignees: Toyota Jidosha Kabushiki Kaisha
- Inventors: Koji SUTO
- Web page: https://patentgrep.com/patent/US20140193697A1

## CPC

- H01M 12/08: composed of a half-cell of a fuel-cell type and a half-cell of the secondary-cell type
- H01M 12/02: Details (of electrodes H01M4/00; of non-active parts H01M50/00)
- H01M 12/06: with one metallic and one gaseous electrode
- H01M 4/382: {Lithium (H01M4/405 takes precedence)}
- 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
- 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 aqueous electrolyte battery is provided with a positive electrode, a negative electrolyte, an aqueous electrolyte, and a deposition portion that promotes deposition of discharge product and that is provided at a location that contacts the aqueous electrolyte and that is a location other than at a catalyst included in the positive electrode.

## Claims

### Claim 1

An aqueous electrolyte battery comprising:
a positive electrode that includes a positive electrode catalyst;
a negative electrode;
an aqueous electrolyte;
a case in which the positive electrode, the negative electrode and the aqueous electrolyte are housed; and
a first structure that is provided on a first inside wall surface of the case and contacts the aqueous electrolyte, wherein
asperities are provided on a surface of the first structure and configured to deposit discharge product,
the first structure is standing upright from the first inside wall surface pointing toward a second inside wall surface of the case, the second inside wall surface of the case opposite to the first inside wall surface, and
an end portion of the first structure is apart from the second inside wall surface in a standing direction of the first structure, the end portion of the first structure positioned at a side of the second inside wall surface.

### Claim 2 (depends on 1)

The aqueous electrolyte battery according to claim 1, further comprising:
a second structure that is provided on the second inside wall surface and contacts the aqueous electrolyte, wherein
asperities are provided on a surface of the second structure and configured to deposit discharge product,
the second structure is standing upright from the second inside wall surface pointing toward the second inside wall surface,
an end portion of the second structure is apart from the first inside wall surface in the standing direction, the end portion of the second structure positioned at a side of the first inside wall surface, and
a gap is provided between the first structure and the second structure in a direction perpendicular to the standing direction.

### Claim 3 (depends on 2)

The aqueous electrolyte battery according to claim 2, wherein the gap is 5 μm to 5000 μm.