BigPatents India

The invention relates to a stabilized bimetal supported catalyst based on platinum or silver, used in the electrodes for electrochemical cells. Accordingly the invention provides a stabilized bimetal catalyst comprising an electrically conductive support and a metallic deposited coating consisting of a first metal M 1 chosen from platinum and silver and a second metal M2, which is different from the first metal MI and is chosen from platinum, silver, gold, ruthenium, iridium, rhodium and osmium. The invention also provides a process for obtaining such a catalyst. The platinum- or silver-based bimetal catalysts of the present invention have the advantage of holding the mass activity, defined as the reduction current per unit mass of catalyst, constant over time or else of keeping the specific activity of the catalyst, i.e. the reduction current per unit area of active surface, constant.