Corrosion resistant coated fuel cell bipolar plate with filled-in fine scale porosities
US7482083B2 · kind B2 · utility
2Cited by
18References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 3, 2003 |
| Grant date | Jan 27, 2009 |
| Priority date | — |
| Expiry date | Jan 15, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A corrosion resistant coated fuel cell plate and method of making the same are embodied in a metal plate provided with a multilayered conductive coating and then with an overcoat which fills in fine scale porosities in the coating. In one preferred embodiment, the overcoating is amorphous graphite applied through a deposition process. In another preferred embodiment, overcoating is a thin layer of oxide created by chemical anodization process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.