Portion conductive electrolyte, method of preparing the same, electrode for fuel cell, method of manufacturing the electrode, and fuel cell including the same
US7816052B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 26, 2006 |
| Grant date | Oct 19, 2010 |
| Priority date | — |
| Expiry date | Jul 29, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A proton conductive electrolyte including a polymerized polyurethane, polyethylene(metha)acrylic acid (PEAA), and a cross-linking agent mixture; a method of preparing the same; an electrode including a support and a catalyst layer, the catalyst layer including a supported catalyst and a polymerized mixture of a polyurethane based compound and a polyethylene(metha)acrylic acid; a method of preparing the electrode; and a fuel cell including the proton conductive electrolyte and/or the electrode. The proton conductive electrolyte can be prepared at lower costs than conventionally used polybenzimidazole and NAFION and can be easily formed into a membrane with a controlled thickness by casting. The polymer electrolyte membrane has high mechanical strength, flexibility, and excellent ionic conductivity. The electrode remains stable under high temperature operation, a strong binding force is maintained between the support and the catalyst layer, and the electrode has excellent ionic conductivity. The fuel cell produced using the proton conductive electrolyte and/or the electrode can operate at 100° C. or higher under non-humidified conditions and exhibits an improved performance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.