Fuel cell using variable porosity gas diffusion material
US7132192B2 · kind B2 · utility
9Cited by
4References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 17, 2003 |
| Grant date | Nov 7, 2006 |
| Priority date | — |
| Expiry date | Nov 8, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A fuel cell (100) includes a membrane electrode assembly (110) located together with a layer of variable porosity porous gas diffusion material (150). The variable porosity gas diffusion material layer (150) operates to selectively limit the amount of reactants reaching localized areas of the membrane electrode assembly (110) in order to reduce hot spots.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.