Polymer electrolyte membranes for use in fuel cells
US6444343B1 · kind B1 · utility
57Cited by
17References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 30, 1997 |
| Grant date | Sep 3, 2002 |
| Priority date | — |
| Expiry date | Apr 30, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A polymer electrolyte membrane composed of polystyrene sulfonic acid (PSSA) crosslinked within a poly(vinylidene fluoride) (PVDF) matrix is provided. This membrane exhibits low methanol crossover which translates to higher fuel and fuel cell efficiencies. A fuel cell comprising a PSSA-PVDF membrane is also provided. Further, methods of decreasing the fuel crossover rate, enhancing fuel cell efficiency, and enhancing electrical performance of a fuel cell are provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.