Reinforced polymer electrolyte membrane
US7411022B2 · kind B2 · utility
11Cited by
68References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 27, 2007 |
| Grant date | Aug 12, 2008 |
| Priority date | — |
| Expiry date | Jul 27, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method is provided for making a reinforced polymer electrolyte membrane, such as may be used in electrolytic cells such as fuel cells, by mixing a sulfonate- or sulfonyl halide-functional polymer with a bisamidine compound and subsequently trimerizing the amidine groups of the bisamidine compound to form triazine linkages. The sulfonyl halide or sulfonate groups may then be converted to sulfonic acid groups, yielding a polymer electrolyte reinforced with a polytriazine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.