Polyimide comprising sulfonic acid group at the terminal of side chain, and polymer electrolyte and fuel cell using the same
US7465780B2 · kind B2 · utility
4Cited by
0References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 8, 2005 |
| Grant date | Dec 16, 2008 |
| Priority date | — |
| Expiry date | Feb 17, 2026 |
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 related to a polyimide, which has high ionic conductivity and good structural stability, does not decompose even under low humidity, and is inexpensive, and a polymer electrolyte and a fuel cell using the same. In particular, the polyimide of the present invention has a repeating unit of Formula (1) below and also includes a reactive blocking group derived from a monoamine compound or monoanhydride compound having at least one carbon-carbon double bond at a terminal or at both terminals:
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.