# US 9,040,452 B2 · Carbon catalyst, method of producing same, and electrode and battery each utilizing same

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- Number: US 9,040,452 B2
- Document ID: US9040452B2
- Status: Granted
- Kind: B2
- Application number: 14/024,222
- Filed: 2013-09-11
- Published: 2014-01-09
- Granted: 2015-05-26
- Earliest claimed: 2009-11-05
- Assignees: National University Corporation Gunma University; Nisshinbo Holdings Inc.
- Applicants: National University Corporation Gunma University; Nisshinbo Holdings Inc.
- Inventors: Takeaki Kishimoto; Mikiko Imada; Jun-ichi Ozaki
- Web page: https://patentgrep.com/patent/US9040452B2

## 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 method of producing a carbon catalyst having an improved activity. The method of producing carbon catalyst including a carbonization step of carbonizing raw materials containing an organic compound as a carbon source, a metal, and an electrically conductive carbon material to produce a carbonized material; a metal impregnation step of impregnating the carbonized material with a metal; and a heat treatment step of subjecting the carbonized material impregnated with the metal to a heat treatment.

## Claims

### Claim 1

A method of producing a carbon catalyst, comprising:
a carbonization step of carbonizing raw materials containing an organic compound as a carbon source, a metal, and an electrically conductive carbon material to produce a carbonized material;
a metal impregnation step of impregnating the carbonized material with a metal; and
a heat treatment step of subjecting the carbonized material impregnated with the metal to a heat treatment.

### Claim 2 (depends on 1)

The method of producing a carbon catalyst according to claim 1, wherein the metal impregnation step comprises impregnating the carbonized material with a different kind of metal from the metal in the raw materials.

### Claim 3 (depends on 1)

The method of producing a carbon catalyst according to claim 1, wherein the heat treatment step comprises heating the carbonized material at 400° C. or more.

### Claim 4 (depends on 2)

The method of producing a carbon catalyst according to claim 2, wherein the heat treatment step comprises heating the carbonized material at 400° C. or more.

### Claim 5 (depends on 1)

The method of producing a carbon catalyst according to claim 1, wherein the metal in the metal impregnation step is one or two or more kinds selected from the group consisting of titanium, chromium, manganese, iron, cobalt, nickel, copper, zinc, zirconium, niobium, molybdenum, lanthanum, cerium, and tantalum.

### Claim 6 (depends on 2)

The method of producing a carbon catalyst according to claim 2, wherein the metal in the metal impregnation step is one or two or more kinds selected from the group consisting of titanium, chromium, manganese, iron, cobalt, nickel, copper, zinc, zirconium, niobium, molybdenum, lanthanum, cerium, and tantalum.

### Claim 7 (depends on 3)

The method of producing a carbon catalyst according to claim 3, wherein the metal in the metal impregnation step is one or two or more kinds selected from the group consisting of titanium, chromium, manganese, iron, cobalt, nickel, copper, zinc, zirconium, niobium, molybdenum, lanthanum, cerium, and tantalum.