Ion conductive copolymers containing one or more hydrophobic oligomers
US7507771B2 · kind B2 · utility
1Cited by
9References
6Claims
0Family size
Assignee
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Key dates
| Filing date | Nov 12, 2004 |
| Grant date | Mar 24, 2009 |
| Priority date | — |
| Expiry date | Feb 19, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T90/40
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In one aspect, the invention provides ion conductive copolymers comprising (1) a plurality of first oligomers, (2) a plurality of second oligomers, (3) ion conductive monomers and (4) linking monomers. The oligomers preferably are hydrophobic and together with the ion conductive monomers are randomly dispersed between the linking monomers. Uses of such polymeric materials include the formation of polymer electrolyte membranes (PEMs), catalyst coated membranes (CCM's) and membrane electrolyte assemblies (MEA's) which may be used in fuel cells and the like.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.