Electrolyte membrane for fuel cells, its production and fuel cell using the same
US8309265B2 · kind B2 · utility
8Cited by
2References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 31, 2004 |
| Grant date | Nov 13, 2012 |
| Priority date | — |
| Expiry date | Oct 31, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention provides an electrolyte membrane for a fuel cell that has a minute projection cluster on one side or both sides of a polymer electrolyte membrane. Further, the present invention provides a production method of an electrolyte membrane for a fuel cell, wherein a mold comprising convex portions having a fixed planar pattern is pressed on one side or both sides of a polymer electrolyte membrane, then while concave portions of the polymer electrolyte membrane formed in the concave portions are being stretched, the mold is removed from the polymer electrolyte membrane for forming a minute projection cluster.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.