Control of the interaction of novel platinum-on-carbon electrocatalysts with fluorinated hydrocarbon resins in the preparation of fuel cell electrodes
US4166143A · kind A · utility
27Cited by
8References
6Claims
0Family size
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Key dates
| Filing date | Jan 24, 1977 |
| Grant date | Aug 28, 1979 |
| Priority date | — |
| Expiry date | Jan 24, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In the repeated production of a fuel cell component consisting of a uniform mixture of an electrocatalyst and a wetproofing agent, an aqueous colloidal fluorinated hydrocarbon resin dispersion is rapidly and reproducibly flocculated, preferably in less than 5 minutes, in the presence of an aqueous suspension of a novel platinum-on-carbon electrocatalyst by means of a polycationic salt solution, the salt concentration being preferably between 10.sup.-3 and 10.sup.-6 molar.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.