Polymer electrolyte membrane and fuel cell using the same
US7727653B2 · kind B2 · utility
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19Claims
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Key dates
| Filing date | Jan 27, 2006 |
| Grant date | Jun 1, 2010 |
| Priority date | — |
| Expiry date | Jan 5, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A polymer electrolyte membrane includes a poly(benzoxazole) polymer doped with at least one acid. The polymer electrolyte membrane is manufactured by impregnating poly(benzoxazole) with an acid and has better ionic conductivity at high temperatures and better mechanical properties than a conventional poly(benzoxazole) polymer electrolyte membrane. In addition, the polymer electrolyte membrane has equivalent thermal stability to a conventional polymer electrolyte membrane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.