High-pressure synthesis of novel oxygen evolution catalysts

Abstract

Recent advances in novel perovskite oxide catalysts synthesized under high pressure are reviewed. The simple Fe4+-perovskite oxides CaFeO3 and SrFeO3 demonstrate high catalytic activity for oxygen evolution reaction (OER) compared with the isoelectronic compound LaMnO3. The quadruple Fe4+-perovskite oxide CaCu3Fe4 O12 displays a high stability in OER conditions, together with its excellent catalytic activity comparable to or exceeding state-of-the-art OER catalysts. The catalytic activity and stability for CaCu3Fe4O12 are attributed to the characteristic crystal structure of the quadruple perovskite.