Sulphonated multiblock copolymer and electrolyte membrane using the same
US7601785B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 13, 2005 |
| Grant date | Oct 13, 2009 |
| Priority date | — |
| Expiry date | Jan 28, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Disclosed is a sulfonated multiblock copolymer, which comprises a hydrophilic block (X) having a repeating unit represented by the following formula 1a, and a hydrophobic block (Y) having a repeating unit represented by the following formula 2, wherein the number (m) of the repeating unit of formula 1a in the hydrophilic block (X) and the number (n) of the repeating unit of formula 2 in the hydrophobic block (Y) satisfy the conditions of 4≦m≦400 and 4≧n≧400. An electrolyte membrane obtained from the sulfonated multiblock copolymer and a fuel cell using the electrolyte membrane are also disclosed:Ar1—O—Ar2a—O [Formula 1a]Ar1—O—Ar3—O [Formula 2]
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.