Electrolyte material for polymer electrolyte fuel cells, electrolyte membrane and membrane-electrode assembly
US7799468B2 · kind B2 · utility
6Cited by
5References
38Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 20, 2005 |
| Grant date | Sep 21, 2010 |
| Priority date | — |
| Expiry date | Jul 20, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/50
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An electrolyte material for polymer electrolyte fuel cells, which is made of a polymer containing repeating units based on a fluoromonomer having a radical polymerization reactivity, wherein the repeating units contain a 5-membered ring (which may contain 1 or 2 oxygen atoms), of which at least one carbon atom is contained in the main chain of the polymer, and an ionic group such as a sulfonic acid group which is bonded to the 5-membered ring directly or via a perfluoroalkylene group having a linear or branched structure; and the polymer has a softening temperature of at least 120° C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.