Platinum, tungsten, and nickel or zirconium containing electrocatalysts
US7435504B2 · kind B2 · utility
2Cited by
23References
10Claims
0Family size
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Key dates
| Filing date | Aug 25, 2005 |
| Grant date | Oct 14, 2008 |
| Priority date | — |
| Expiry date | Nov 8, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present teachings are directed toward electrocatalyst compositions of alloys of platinum, tungsten and one of either of nickel or zirconium for use in fuel cells. The alloys consists essentially of platinum present in an atomic percentage ranging between about 20 percent and about 45 percent, tungsten present in an atomic percentage ranging between about 30 percent and about 70 percent, and one of either nickel present in an atomic percentage ranging between about 5 percent and about 25 percent, or zirconium present in an atomic percentage ranging between about 5 percent and about 40 percent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.