Hybrids of iridium–cobalt phosphates as a highly efficient electrocatalyst for the oxygen evolution reaction in neutral solution

Abstract

Hybrids of iridium–cobalt phosphates (IrCo-Pi) were prepared via a facile co-electrodeposition approach and employed as an electrocatalyst for the oxygen evolution reaction (OER). IrCo-Pi with an optimized Ir-to-Co ratio (R_Ir-to-Co) exhibited an intrinsic activity toward the OER superior to the two well-known catalysts: cobalt phosphate (Co-Pi) and iridium phosphate (Ir-Pi).