Proton exchange membrane fuel cell
US7157178B2 · kind B2 · utility
2Cited by
13References
64Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 24, 2003 |
| Grant date | Jan 2, 2007 |
| Priority date | — |
| Expiry date | Oct 27, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A fuel cell system with a proton exchange membrane. There is a cathode catalyst layer overlying the first face of the proton exchange membrane, and a cathode diffusion layer overlying the cathode catalyst layer. There is an anode catalyst layer overlying the second face of the proton exchange membrane, and an anode diffusion layer overlying the anode catalyst layer. The cathode diffusion layer has a water vapor permeance of less than about 3×10−4 g/(Pa s m2) at 80° C. and 1 atmosphere. The invention also relates to cathode diffusion layers for fuel cell systems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.