Metal alloy catalysts for fuel cell cathodes
US8334081B2 · kind B2 · utility
1Cited by
17References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 6, 2006 |
| Grant date | Dec 18, 2012 |
| Priority date | — |
| Expiry date | Apr 24, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
For the oxygen reduction reaction at the cathode of proton exchange membrane fuel cells, a metal alloy catalyst contains the metals Pd, M1 and M2 where M1 and M2 are different metals selected from Co, Fe, Au, Cr and W (but excluding the combination PdCoAu). Preferred ternary alloys for use as catalysts may be selected from PdCoCr, PdCoW, PdFeCr, PdFeW, PdCrW, PdWAu, PdCrAu, PdCoFe and PdFeAu. Compositional ranges that are specially effective are assessed by a high throughput physical vapor deposition method. Catalysts especially suitable for use in direct methanol fuel cells are identified.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.