Supported catalyst, method of preparing the same, and fuel cell using the same
US7994088B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 21, 2007 |
| Grant date | Aug 9, 2011 |
| Priority date | — |
| Expiry date | Feb 15, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method of preparing a supported catalyst, a supported catalyst prepared by the method, and a fuel cell using the supported catalyst. In particular, a method of preparing a supported catalyst by preparing a primary supported catalyst containing catalytic metal particles that are obtained by a primary gas phase reduction reaction of a portion of the final loading amount of a catalytic metal, and reducing the remaining portion of the catalytic metal by a secondary liquid phase reduction reaction using the primary supported catalyst. The supported catalyst contains catalytic metal particles having a very small average particle size, which are uniformly distributed on a carbon support at a high concentration, and thus exhibits maximal catalyst activity. A fuel cell produced using the supported catalyst has improved efficiency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.