Active Thin Film Anodes for Alkaline Water Electrolysis

Department of Chemistry, Faculty of Science, Banaras Hindu University, Varanasi-221 005 Thin films of Co304, NiCo204, LaNiO3, Lat-xSrxCoO3 and of Ni-Fe alloys were prepared on conductive supports and their physicochemical and electrocatalytic properties towards oxygen evolution reaction in alkaline medium have been investigated. The electrode kinetic parameters such as, the Tafel slope and the reaction order with respect to OH-concentration have been determined. Based on the results suitable mechanisms for the oxygen evolution reaction are suggested.