Porous carbon catalyst, method for producing same, electrode and battery

Patent metadata

Field	Value
Publication number	US-10388967-B2
Application number	US-201414894588-A
Country	US
Kind code	B2
Filing date	Jun 4, 2014
Priority date	Jun 14, 2013
Publication date	Aug 20, 2019
Grant date	Aug 20, 2019

Abstract

A porous carbon catalyst exhibiting excellent catalytic activity and a method of producing the same, and an electrode and a battery. The porous carbon catalyst is obtained through carbonization of an organic polymer porous body having a skeleton containing a metal in an inside thereof. The porous carbon catalyst may have a skeleton containing the metal in an inside thereof, and the skeleton may be a particle aggregate-like skeleton. The method of producing a porous carbon catalyst includes carbonizing an organic polymer porous body having a skeleton containing a metal in an inside thereof.

First claim

The invention claimed is:

1. A method of producing a porous carbon catalyst, the method comprising
dissolving an organic polymer and a metal in a solvent under a first condition to prepare a solution containing the organic polymer and the metal,
forming an organic polymer porous body having a skeleton containing the metal in an inside thereof, wherein the skeleton is a particle aggregate-like skeleton, through precipitation in the solution under a second condition different from the first condition, and
carbonizing the organic polymer porous body,
wherein the formation of the organic polymer porous body through the precipitation is performed by changing the condition from the first condition to the second condition to cause phase separation in the solution containing the organic polymer and the metal.

2. The method of producing a porous carbon catalyst according to claim 1 , wherein the first condition is a first temperature and the second condition is a second temperature lower than the first temperature.

3. The method of producing a porous carbon catalyst according to claim 2 , wherein the organic polymer and the metal are dissolved in the solvent heated to the first temperature, and then the solution is cooled to the second temperature to precipitate the organic polymer porous body.

4. A method of producing a porous carbon catalyst, the method comprising
dissolving an organic polymer and a metal in a solvent under a first condition to prepare a solution containing the organic polymer and the metal,
forming an organic polymer porous body having a skeleton containing the metal in an inside thereof, wherein the skeleton is a particle aggregate-like skeleton, through precipitation in the solution under a second condition different from the first condition, and
carbonizing the organic polymer porous body,
wherein the method further comprises
performing an insolubilization treatment of the metal after the precipitation of the organic polymer porous body, and
replacing the solvent by a poor solvent for the organic polymer, the poor solvent being a solvent in which 50 g or more of the organic polymer cannot be dissolved with respect to 1 L of the solvent,
wherein the organic polymer porous body is carbonized after replacing the solvent.

5. The method of producing a porous carbon catalyst according to claim 4 ,
wherein the formation of the organic polymer porous body through the precipitation is performed by changing the condition from the first condition to the second condition to cause phase separation in the solution containing the organic polymer and the metal.

6. The method of producing a porous carbon catalyst according to claim 5 , wherein the first condition is a first temperature and the second condition is a second temperature lower than the first temperature.

7. The method of producing a porous carbon catalyst according to claim 6 , wherein the organic polymer and the metal are dissolved in the solvent heated to the first temperature, and then the solution is cooled to the second temperature to precipitate the organic polymer porous body.

Assignees

• Nisshinbo Holdings Inc

Inventors

• Imashiro Yasuo
• Kubota Yuji
• Taira Akiko

Classifications

• H01M4/96 Primary

  Carbon-based electrodes · CPC title

• H01M4/9083

  on carbon or graphite · CPC title

• H01M4/926

  on carbon or graphite · CPC title

• H01M2008/1095

  Fuel cells with polymeric electrolytes · CPC title

• C01B32/05

  Preparation or purification of carbon not covered by groups C01B32/15, C01B32/20, C01B32/25, C01B32/30 · CPC title