Catalytically active porous nickel electrodes
US4116804A · kind A · utility
35Cited by
6References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 17, 1976 |
| Grant date | Sep 26, 1978 |
| Priority date | — |
| Expiry date | Nov 17, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An improved electrode having a porous nickel surface layer of greater than 75 microns in thickness and at least 11% in porosity is produced by a process which includes interdiffusing aluminum and nickel at a temperature of at least 660.degree. C. to form a nickel-aluminum alloy layer from which aluminum is subsequently selectively dissolved. When used as a cathode in an electrolytic cell for producing hydrogen, chlorine and caustic from brine, the improved electrode exhibits exceptionally low hydrogen overvoltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.