RUTHENIUM-BASED, INERT OXIDE ELECTRODES FOR IMPREGNATING ACTIVE MATERIALS IN NICKEL PLAQUES

Titanium electrodes coated with mixed ruthenium-iridium-titanium oxide s are tested as inert counter electrodes for impregnating active mater ials in porous nickel plaques. The latter are to be used as the positi ve electrodes in nickel/cadmium cells. Weight losses and variations in bath voltage have been monitored while using these electrodes in the impregnation bath. A 2.85 Ah nickel/cadmium cell has been constructed using nickel electrodes developed by employing the coated electrodes o f this study. The performances of these coated electrodes are compared with those of platinum electrodes that are currently employed by nick el/cadmium battery manufacturers. The results are found to be satisfac tory.