Finely particulated colloidal platinum compound and sol for producing the same, and method of preparation of fuel cell electrodes and the like employing the same
US4044193A · kind A · utility
55Cited by
6References
34Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 20, 1974 |
| Grant date | Aug 23, 1977 |
| Priority date | — |
| Expiry date | Dec 20, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
This disclosure deals with novel very fine, particulated colloidal platinum of the 15-25 Angstrom size range of unusual catalytic activity and particularly adapted for adsorption or other deposition upon carbon for use as fuel cell catalytic electrodes and the like and produced from platinum colloids and sols including complex platinum sulfite compounds and sols derived therefrom.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.