Conductive coatings for PEM fuel cell electrodes
US7575827B2 · kind B2 · utility
1Cited by
24References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 22, 2006 |
| Grant date | Aug 18, 2009 |
| Priority date | — |
| Expiry date | Sep 23, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A bipolar plate for use in a stack of fuel cell modules includes a bipolar plate that has at least one surface containing a metal alloy oxidizable to form a metal oxide having a surface resistance no greater than about 0.007 ohm-cm2. The metal alloy is oxidized to form a layer of metal oxide having a thickness of about 10−8 cm to about 10−2 cm and a resistivity no greater than about 107 ohm-cm. In addition to their use in fuel cells, the alloys can be employed to form conductive surfaces of electrical contacts useful for various electrical devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.