A novel bifunctional catalyst for overall water electrolysis: nano IrxMn(1−x)Oy hybrids with L12-IrMn3 phase

A nano IrxMn(1-x)Oy hybrid electrode with a L12-IrMn3 phase was used as a bifunctional catalyst with ultra-low iridium loading for overall water electrolysis in an acid solution for the first time. The HER activity of the IrxMn(1-x)Oy hybrid electrode not only exceeded that of IrO2, but also exceeded that of Pt/C. The OER activity of the IrxMn(1-x)Oy hybrid electrode also exceeded that of IrO2.