Manufacturing process of electrodes for electrolysis
US7842353B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 18, 2009 |
| Grant date | Nov 30, 2010 |
| Priority date | — |
| Expiry date | Mar 18, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25B11/091
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A process for manufacturing electrodes for electrolysis, including steps of forming an arc ion plating (AIP) undercoating layer including valve metal or valve metal alloy containing a crystalline tantalum component and a crystalline titanium component on a surface of the electrode substrate comprising valve metal or valve metal alloy, by an arc ion plating method; heat sintering, including the steps of coating a metal compound solution, which includes valve metal as a chief element, onto the surface of the AIP undercoating layer, followed by heat sintering to transform only the tantalum component of the AIP undercoating layer into an amorphous substance, and to form an oxide interlayer, which includes a valve metal oxides component as a chief element, on the surface of the AIP undercoating layer containing the transformed amorphous tantalum component and the crystalline titanium component; and forming an electrode catalyst layer on the surface of the oxide interlayer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.