Electrode catalyst for use in a fuel cells, and fuel cell and electrode utilizing same
US7585585B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jun 25, 2004 |
| Grant date | Sep 8, 2009 |
| Priority date | — |
| Expiry date | Mar 2, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention provides a high activity electrode catalyst for fuel cells whose catalytic activity due to an expensive noble metal, such as platinum, has been improved to a higher level through the use of an inexpensive material to enable a reduction in noble metal catalyst usage, a fuel cell in which the above high activity electrode catalyst is used, a membrane-electrode assembly in which the above high activity electrode catalyst is used, and a gas diffusion electrode in which the above high activity electrode catalyst is used. Use is made of an electrode catalyst for fuel cells comprising a carbon material that contain catalytically induced turbostratic structures in parts of its structure and noble metal particles supported thereon, or an electrode catalyst for fuel cells comprising the catalyst mentioned above and a catalyst comprising carbon black and noble metal particles supported thereon as mixed together or an electrode catalyst comprising the catalyst mentioned above and carbon black as mixed together.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.