Battery and method of manufacturing cathode of the same

Patent metadata

Field	Value
Publication number	US-11876207-B2
Application number	US-201716312188-A
Country	US
Kind code	B2
Filing date	Jun 26, 2017
Priority date	Jul 1, 2016
Publication date	Jan 16, 2024
Grant date	Jan 16, 2024

Abstract

A battery includes a cathode ( 101 ), an anode ( 102 ), and an electrolyte ( 103 ). The cathode ( 101 ) is made of a bicontinuous body having a three-dimensional network structure including a plurality of nanostructures. The electrolyte ( 103 ) is sandwiched between the cathode ( 101 ) and the anode ( 102 ) and made of a salt. The electrolyte ( 103 ) may be made of, e.g., an aqueous solution of one of potassium chloride and sodium chloride, or a mixture thereof. The anode ( 102 ) may contain, e.g., a metal selected from magnesium, zin, iron, and aluminum.

First claim

The invention claimed is:

1. A battery comprising:
a cathode made of a bicontinuous body having a three-dimensional network structure in which a plurality of nanostructures are integrated by noncovalent bonds and having a flexible structure in which bonded portions of the nanostructures are deformable;
an anode;
an electrolyte made of a salt and sandwiched between the cathode; and
a catalyst attached on a surface of the cathode and configured to promote discharge on the surface of the cathode,
wherein the catalyst is made of a hydrate of an oxide of at least one metal selected from calcium, iron, zinc, copper, and molybdenum;
each of the plurality of nanostructures is a nanofiber constituted by bacteria cellulose, and the bicontinuous body is carbonized and has a distortion of 50% or more at elastic limit.

2. The battery according to claim 1 , wherein the electrolyte is made of an aqueous solution of one of potassium chloride, sodium chloride, and a mixture of potassium chloride and sodium chloride.

3. The battery according to claim 1 , further comprising a housing configured to accommodate a cell including the cathode, the electrolyte, and the anode, wherein the housing is made of a naturally degradable material.

4. The battery according to claim 1 , wherein the anode contains one of magnesium, zinc, iron, and aluminum.

5. The battery according to claim 1 , wherein the cathode is an air electrode.

6. The battery according to claim 1 , wherein an active material in the cathode is water.

7. The battery according to claim 1 , wherein the cathode is an air electrode.

8. The battery according to claim 1 , wherein the cathode is an air electrode.

9. The battery according to claim 2 , wherein the cathode is an air electrode.

10. The battery according to claim 3 , wherein the cathode is an air electrode.

11. The battery according to claim 4 , wherein the cathode is an air electrode.

12. The battery according to claim 1 , wherein an active material in the cathode is water.

Assignees

• Nippon Telegraph & Telephone

Inventors

• Nohara Masaya
• Ono Yoko
• Iwata Mikayo
• Hayashi Masahiko
• Komatsu Takeshi

Classifications

• H01M12/08 Primary

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

• C01B32/182

  Graphene · CPC title

• H01M4/86

  Inert electrodes with catalytic activity, e.g. for fuel cells · CPC title

• H01M4/90

  Selection of catalytic material · CPC title

• H01M4/9016

  Oxides, hydroxides or oxygenated metallic salts · CPC title