Mechanism of Oxygen Reactions at Porous oxide Electrodes. Part 2. Oxygen evolution at ruthenium dioxide, iridium dioxide and mixed ruthenium iridium oxide electrodes in aqueous acid and alkaline solution

Abstract

The kinetics mechanism of the oxygen evolution reaction at a series of RuO2/IrO2 mixed oxides in aqueous acid and alkaline solution has been examined using a variety of electrochemical methods. Factors affecting the electrocatalytic activity have been elucidated and novel oxygen evolution mechanisms in terms of reactive oxyruthenium and oxyiridium surface groups are proposed.