Lithium air battery including negative electrode, positive electrode, nonaqueous lithium ion conductor, and copper ion

Patent metadata

Field	Value
Publication number	US-10629970-B2
Application number	US-201815984417-A
Country	US
Kind code	B2
Filing date	May 21, 2018
Priority date	Jun 12, 2017
Publication date	Apr 21, 2020
Grant date	Apr 21, 2020

Abstract

A lithium air battery includes a negative electrode allowing a lithium ion to be occluded in the negative electrode and released from the negative electrode; a positive electrode configured to use oxygen in air as a positive electrode active material; a nonaqueous lithium ion conductor disposed between the negative electrode and the positive electrode; and a copper ion present in at least one selected from the group consisting of the positive electrode and the nonaqueous lithium ion conductor.

First claim

What is claimed is:

1. A lithium air battery comprising:
a negative electrode allowing a lithium ion to be occluded in the negative electrode and released from the negative electrode;
a positive electrode configured to use oxygen in air as a positive electrode active material;
a nonaqueous lithium ion conductor disposed between the negative electrode and the positive electrode; and
a copper ion present in at least one selected from the group consisting of the positive electrode and the nonaqueous lithium ion conductor, wherein
the positive electrode is directly in contact with the nonaqueous lithium ion conductor.

2. The lithium air battery according to claim 1 ,
wherein the copper ion is a monovalent copper ion.

3. The lithium air battery according to claim 2 , further comprising copper iodide,
wherein the monovalent copper ion is supplied from the copper iodide.

4. The lithium air battery according to claim 3 ,
wherein the copper iodide is supported by the positive electrode.

5. The lithium air battery according to claim 3 ,
wherein the nonaqueous lithium ion conductor contains the copper iodide.

6. The lithium air battery according to claim 5 ,
wherein the copper iodide is dissolved in the nonaqueous lithium ion conductor at a concentration of 0.01 mmol/liter or more.

7. The lithium air battery according to claim 1 ,
wherein the nonaqueous lithium ion conductor contains tetraethylene glycol dimethyl ether.

8. The lithium air battery according to claim 1 ,
wherein the nonaqueous lithium ion conductor contains dimethylsulfoxide.

Assignees

• Panasonic Ip Man Co Ltd

Inventors

• Moriishi Masako
• Otsuka yu

Classifications

• H01M10/0567

  characterised by the additives · CPC title

• H01M2300/0028

  characterised by the solvent · CPC title

• H01M4/9041

  Metals or alloys (H01M4/92 takes precedence) · CPC title

• H01M12/08 Primary

  composed of a half-cell of a fuel-cell type and a half-cell of the secondary-cell type · CPC title

• H01M4/9091

  Unsupported catalytic particles; loose particulate catalytic materials, e.g. in fluidised state · CPC title