Electrophoretically deposited hydrophilic coatings for fuel cell diffuser/current collector
US7160424B2 · kind B2 · utility
1Cited by
10References
3Claims
0Family size
Assignee
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Key dates
| Filing date | Nov 28, 2001 |
| Grant date | Jan 9, 2007 |
| Priority date | — |
| Expiry date | Oct 18, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2913
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method is provided for making a hydrophilic carbon fiber construction, such as a fuel cell gas diffusion layer or diffuser/current collector, by electrophoretic deposition of a metal oxide selected from Type I or Type II, where Type I consists of metal oxides having a negative zeta potential and Type II consists of metal oxides having a positive zeta potential. A hydrophilic carbon fiber construction is provided, such as a fuel cell gas diffusion layer or diffuser/current collector, which is coated with a metal oxide and capable of wicking 200 mg of water per 40 mg of the hydrophilic carbon fiber construction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.