Polymer electrolyte membrane and solid polymer electrolyte fuel cell using same
US6933068B2 · kind B2 · utility
33Cited by
5References
12Claims
0Family size
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Key dates
| Filing date | Jan 22, 2002 |
| Grant date | Aug 23, 2005 |
| Priority date | — |
| Expiry date | Jan 22, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A composite polymer electrolyte membrane is formed from a first polymer electrolyte comprising a sulfonated polyarytene polymer and a second polymer electrolyte comprising another hydrocarbon polymer electrolyte. In the first polymer electrolyte, 2-70 mol % constitutes an aromatic compound unit with an electron-attractive group in its principal chain, while 30-98 mol % constitutes an aromatic compound unit without an electron-attractive group in its principal chain. The second polymer electrolyte is a sulfonated polyether or sulfonated polysulfide polymer electrolyte.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.