Cells
US7799465B2 · kind B2 · utility
1Cited by
14References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 18, 2002 |
| Grant date | Sep 21, 2010 |
| Priority date | — |
| Expiry date | Nov 10, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
There is described a fuel cell or electrolytic cell comprising an ion-conductive polymeric material which includes a first repeat unit of formula (I): —(O-Ph1-CO-Ph1-O-Ph1-CO-Ph1)-, and a second repeat unit of formula (II): —(O-Ph2-O-Ph3-CO-Ph4)-, or of formula (III): (O-Ph2-O-Ph3-SO2-Ph4)-; wherein Ph1, Ph2, Ph3 and Ph4 independently represent phenyl moieties and wherein said second repeat unit is provided with ion-exchange sites. The polymeric material may include a third repeat unit which is amorphous.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.