Membrane electrode assembly comprising a catalyst migration barrier layer
US9397357B2 · kind B2 · utility
1Cited by
3References
8Claims
0Family size
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Key dates
| Filing date | Apr 15, 2011 |
| Grant date | Jul 19, 2016 |
| Priority date | — |
| Expiry date | Aug 20, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A membrane electrode assembly for a fuel cell is disclosed, which comprises at least one porous ionomer containing layer disposed at the interface between the cathode electrocatalyst material and the ion exchange membrane of the fuel cell. The porous ionomer containing layer comprises a catalyst migration impeding compound. The membrane electrode assembly exhibits improved stability against Pt dissolution and Pt-band formation within the ion exchange membrane, hence having improved durability and lifetime performance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.