Method of stabilizing electrodes coated with mixed oxide electrocatalysts during use in electrochemical cells
US4426269A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 22, 1979 |
| Grant date | Jan 17, 1984 |
| Priority date | — |
| Expiry date | Oct 22, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25B15/00
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
An electrochemical cell with an electrode having deposited thereon an electrocatalyst which is a mixed oxide of nickel-molydenum, nickel-tungsten, cobalt-molydenum or cobalt-tungsten and containing an aqueous alkaline electrolyte comprising an aqueous solution of a molybdenum, vanadium or tungsten compound. The electrodes are preferably prepared by alternately coating an electrode core with a compound of nickel or cobalt, and with a compound of molydenum or tungsten, said compounds being capable of thermal decomposition to the corresponding oxides, heating the coated core at an elevated temperature to form a layer of the mixed oxides on the core and finally curing the core with the mixed oxide layer thereon in a reducing atmosphere at a temperature between 350.degree. C. and 600.degree. C. The cells are particularly suitable for use in the electrolysis of water or brine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.