Boosting electrochemical water oxidation through replacement of Oh Co sites in cobalt oxide spinel with manganese

Abstract

The strikingly high catalytic performance and stability of manganese substituted cobalt oxide spinel (Mn_xCo_3−xO₄) over pristine cobalt oxide spinel (Co₃O₄) for the alkaline electrochemical water oxidation is reported. The different role of cations could be uncovered along with the detection of drastic surface-structural changes during the catalysis using spectroscopic and microscopic methods.