A strongly coupled oxide-support heterostructure for efficient acidic water oxidation†
Abstract
The synthesized RuO2/MnCo2O4.5 nano-heterostructure possesses dense interfaces and abundant defect structures, synergistically balancing oxygen evolution reaction (OER) activity and stability. RuO2/MnCo2O4.5 exhibits a low overpotential of 190 mV at 10 mA cm−2. The proton exchange membrane (PEM) electrolyzer assembled can operate at 200 mA cm−2 stably for 50 h.