Method for fabricating a polymer electrolyte membrane for a fuel cell
US8337732B2 · kind B2 · utility
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4Claims
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Key dates
| Filing date | May 18, 2011 |
| Grant date | Dec 25, 2012 |
| Priority date | — |
| Expiry date | Jul 18, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In order to significantly improve power generation efficiencies for the fuel cells, the present invention provides a method for fabricating a polymer electrolyte membrane comprising a surface with an array of a plurality of fine convex portion with a depth of not less than 3 μm and not more than 12 μm and an aspect ratio of not less than 0.4 and not more than 2.0,
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.