Catalyst for cathode in fuel cell
US7566514B2 · kind B2 · utility
5Cited by
17References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 16, 2003 |
| Grant date | Jul 28, 2009 |
| Priority date | — |
| Expiry date | Feb 12, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A catalyst particle having high oxygen reduction reactivity and low methanol oxidation reactivity, a supported catalyst comprising the catalyst particle, and a fuel cell using a cathode comprising the supported catalyst are provided. The whole catalyst particle or at least the surface of the catalyst particle includes an alloy of two or more metals selected from the group consisting of Fe, Co, Ni, Rh, Pd, Pt, Cu, Ag, Au, Zn, and Cd. The alloy has a stronger oxygen-binding force than platinum or a weaker hydrogen-binding force than platinum.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.