Polymer electrolyte with aromatic sulfone crosslinking
US7847035B2 · kind B2 · utility
2Cited by
69References
14Claims
0Family size
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Key dates
| Filing date | Apr 3, 2006 |
| Grant date | Dec 7, 2010 |
| Priority date | — |
| Expiry date | Dec 6, 2028 |
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.