Ion conducting membrane having high hardness and dimensional stability
US6613203B1 · kind B1 · utility
30Cited by
93References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 10, 2001 |
| Grant date | Sep 2, 2003 |
| Priority date | — |
| Expiry date | Sep 10, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/249981
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An integral composite membrane comprised of an expanded polytetrafluoroethylene having a morphological structure comprising a microstructure of very highly elongated nodes interconnected by fibrils is imbibed with ionomer. This composite membrane shows a surprising increase in hardness and thereby reduces electrical shorting and improves fuel cell performance and durabiity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.