Activation of electrochemical cells with catalyst electrodes
US6805983B1 · kind B1 · utility
0Cited by
7References
12Claims
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Key dates
| Filing date | Feb 11, 2002 |
| Grant date | Oct 19, 2004 |
| Priority date | — |
| Expiry date | Nov 7, 2022 |
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 electrochemical cells such as proton exchange membrane fuel cells and direct methanol fuel cells operating at ambient conditions are activated first by exposing them at a temperature higher than ambient temperature and with the gaseous reactants back-pressurized. The performance of the membrane-electrode assemblies, especially those whose electrodes are of low catalyst loadings made using supported catalysts, improves dramatically after the activation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.