# US 8,569,207 B2 · Carbon catalyst, method of producing same, and electrode and battery each utilizing same

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- Number: US 8,569,207 B2
- Document ID: US8569207B2
- Status: Granted
- Kind: B2
- Application number: 13/505,068
- Filed: 2010-11-04
- Published: 2012-08-30
- Granted: 2013-10-29
- Earliest claimed: 2009-11-05
- Assignees: National University Corporation Gunma University; Nisshinbo Holdings Inc.
- Applicants: Takeaki Kishimoto; Mikiko Imada; Jun-ichi Ozaki
- Inventors: Takeaki Kishimoto; Mikiko Imada; Jun-ichi Ozaki
- Web page: https://patentgrep.com/patent/US8569207B2

## CPC

- H01M 4/9083: {on carbon or graphite}
- H01M 4/90: Selection of catalytic material
- Y02E 60/50: Fuel cells
- 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

Provided is a carbon catalyst having an improved activity. The carbon catalyst is obtained by: carbonizing raw materials containing an organic compound as a carbon source, a metal, and an electrically conductive carbon material to produce a carbonized material; impregnating the carbonized material with a metal; and subjecting the carbonized material with the metal to a heat treatment.

## Claims

### Claim 1

A carbon catalyst, characterized in that a total of a desorption amount of carbon monoxide and a desorption amount of carbon dioxide in a temperature programmed desorption method from 150° C. to 400° C. is 0.06 mmol or more per 0.02 g, wherein the desorption amount of carbon monoxide is 0.01 mmol or more and the desorption amount of carbon dioxide is 0.05 mmol or more.

### Claim 2 (depends on 1)

An electrode, comprising a carbon catalyst of claim 1, wherein
a desorption amount of carbon monoxide is 0.01 mmol or more per 0.02 g of the carbon catalyst in a temperature programmed desorption method from 150° C. to 400° C.,
a desorption amount of carbon dioxide being 0.05 mmol or more per 0.02 g of the carbon catalyst in a temperature programmed desorption method from 150° C. to 400° C., and
a total of the desorption amount of carbon monoxide and the desorption amount of carbon dioxide in a temperature programmed desorption method from 150° C. to 400° C. is 0.06 mmol or more per 0.02 g of the carbon catalyst.

### Claim 3 (depends on 2)

A battery, comprising an electrode of claim 2, the electrode comprising a carbon catalyst, wherein
a desorption amount of carbon monoxide is 0.01 mmol or more per 0.02 g of the carbon catalyst in a temperature programmed desorption method from 150° C. to 400° C.,
a desorption amount of carbon dioxide being 0.05 mmol or more per 0.02 g of the carbon catalyst in a temperature programmed desorption method from 150° C. to 400° C., and
a total of the desorption amount of carbon monoxide and the desorption amount of carbon dioxide in a temperature programmed desorption method from 150° C. to 400° C. is 0.06 mmol or more per 0.02 g of the carbon catalyst.

### Claim 4 (depends on 1)

The carbon catalyst according to claim 1, wherein the carbon catalyst is obtained by:
impregnating a carbonized material, which is obtained by carbonization of raw materials containing an organic compound as a carbon source, a metal, and an electrically conductive carbon material, with a metal, and:
subjecting the resultant to a heat treatment.

### Claim 5 (depends on 1)

A battery, comprising a carbon catalyst of claim 1, wherein
a desorption amount of carbon monoxide is 0.01 mmol or more per 0.02 g of the carbon catalyst in a temperature programmed desorption method from 150° C. to 400° C.,
a desorption amount of carbon dioxide being 0.05 mmol or more per 0.02 g of the carbon catalyst in a temperature programmed desorption method from 150° C. to 400° C., and
a total of the desorption amount of carbon monoxide and the desorption amount of carbon dioxide in a temperature programmed desorption method from 150° C. to 400° C. is 0.06 mmol or more per 0.02 g of the carbon catalyst.

### Claim 6

A carbon catalyst having a catalytic activity of an oxygen reduction activity, characterized in that a total of a desorption amount of carbon monoxide and a desorption amount of carbon dioxide in a temperature programmed desorption method from 150° C. to 400° C. is 0.06 mmol or more per 0.02 g, wherein the desorption amount of carbon monoxide is 0.01 mmol or more and the desorption amount of carbon dioxide is 0.05 mmol or more.