Fuel cell having fuel and oxidation gas channels of different cross-sections
US7879505B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 7, 2005 |
| Grant date | Feb 1, 2011 |
| Priority date | — |
| Expiry date | May 29, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A fuel cell includes a membrane electrode assembly (101); a first gas diffusion layer (104) having a first raised portion (104a); an anode side separator (102); a second gas diffusion layer (105) having a second raised portion (105a); and a cathode side separator (103). A fuel gas passage (102b) formed by a first groove (102a) and the first raised portion (104a) has a first cross section (A1), while an oxidation gas passage (103b) formed by a second groove (103a) and the second raised portion (105a) has a second cross section (A2). The first raised portion (104a) and the second raised portion (105a) are different from each other in scale, forming the first cross section (A1) and the second cross section (A2) different from each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.