Polymer electrolyte with aromatic sulfone crosslinking
US7060756B2 · kind B2 · utility
12Cited by
66References
6Claims
0Family size
Assignee
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Key dates
| Filing date | Nov 24, 2003 |
| Grant date | Jun 13, 2006 |
| Priority date | — |
| Expiry date | Nov 26, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method is provided for obtaining crosslinked polymers having pendent sulfonic acid groups by crosslinking through the sulfonic acid groups or their precursors with aromatic crosslinkers or aromatic pendent crosslinking groups to form aromatic sulfones. Such crosslinked polymers may be used to make polymer electrolyte membranes (PEM's) that may be used in electrolytic cells such as fuel cells.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.