Fuel cell
US7303830B2 · kind B2 · utility
1Cited by
0References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 21, 2002 |
| Grant date | Dec 4, 2007 |
| Priority date | — |
| Expiry date | Feb 28, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/50
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A fuel cell powered by direct fuel, for example a direct methanol fuel cell, includes a polymer electrolyte membrane which includes a semi-crystalline polymer. Preferred semi-crystalline polymers include first repeat units comprising sulphonated aromatic group containing moieties linked by —SO2— and/or —CO— and/or -Q-groups, where Q is O or S and second repeat units which include aromatic group containing moieties linked by —CO— and/or Q groups.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.