Thermally stabilized reduced platinum oxide electrocatalyst
US4457823A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 19, 1981 |
| Grant date | Jul 3, 1984 |
| Priority date | — |
| Expiry date | Jan 19, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25B9/23
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A novel, electrocatalytic material comprising at least one reduced platinum group metal oxide is subsequently heated in the presence of oxygen at a temperature high enough to stabilize the catalyst in acidic and halogen environments. The catalyst optionally contains other thermally stabilized, reduced platinum group metal oxides, electroconductive extenders of the group consisting of graphite and oxides of transition or valve metals. A novel electrode structure includes the catalyst and a polymeric binder. A novel method of preparing the electrocatalytic material is described as well as a unitary electrolyte electrode structure which has a bonded electrode containing the novel electrocatalytic material, bonded to at least one side of a membrane-electrolyte.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.