Grafted polymer electrolyte membrane, method of producing a grafted polymer electrolyte membrane, and fuel cell comprising the same
US6827986B2 · kind B2 · utility
2Cited by
17References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 16, 2001 |
| Grant date | Dec 7, 2004 |
| Priority date | — |
| Expiry date | Jun 29, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention is a grafted polymer electrolyte membrane prepared by first preparing a precursor membrane comprising a polymer which is capable of being graft polymerized, exposing the surface of the precursor membrane to a plasma in an oxidative atmosphere, then graft-polymerizing a side chain polymer to the plasma treated precursor membrane and introducing a proton conductive functional group to the side chain. The resulting grafted polymer electrolyte membrane has excellent stability and performance when used in a proton-exchange membrane fuel cell or for electrolysis of water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.