| 摘要 |
The present invention provides an anode for oxygen evolution consisting essentially of a substrate of a film forming metal having thereon a multilayer coating comprising an interior layer and an exterior layer. as follows. The interior layer consists essentially of substantially pore free platinum applied electrolytically to a thickness of at least about 150 microinches, then densified by heat treating in an oxygen containing atmosphere at from 600.degree.C to 775.degree.C so as to close the pores in the platinum layer. The exterior layer consists essentially of iridium oxide, and optionally not more than about 3% rhodium oxide. The exterior layer is applied by thermal decomposition of one or more thermally decomposable iridium and, optionally, rhodium compounds in an oxygen containing atmosphere at a temperature of not more than about 600.degree.C. |
