Carbon based bipolar plate coatings for effective water management
US8685593B2 · kind B2 · utility
16Cited by
5References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 22, 2009 |
| Grant date | Apr 1, 2014 |
| Priority date | — |
| Expiry date | Nov 6, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A flow field plate for fuel cell applications includes a metal with a carbon layer disposed over at least a portion of the metal plate. The carbon layer is overcoated with a silicon oxide layer to form a silicon oxide/carbon bilayer. The silicon oxide/carbon bilayer may be activated to increase hydrophilicity. The flow field plate is included in a fuel cell with a minimal increase in contact resistance. Methods for forming the flow field plates are also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.