Composite electrolyte membrane and fuel cell containing the same
US7179560B2 · kind B2 · utility
5Cited by
18References
20Claims
0Family size
Assignee
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Key dates
| Filing date | Jul 28, 2003 |
| Grant date | Feb 20, 2007 |
| Priority date | — |
| Expiry date | Dec 12, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A composite electrolyte membrane for decreasing the crossover of polar organic fuel and a fuel cell employing the membrane are provided. The composite electrolyte membrane includes a modified silica in which silicon atoms have substituents as represented by formula 1 and formula 2; and an cation exchange group-containing polymer:Formula 1—R1—SO3XFormula 2—R2—S—S—R3—wherein, R1 is an alkylene group with 2–7 carbon atoms, X is a hydrogen atom or an alkali metal, R2 and R3 are each independently an alkylene group with 2–7 carbon atoms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.