Accelerating the oxygen evolution reaction kinetics of Co3O4 in neutral electrolyte by decorating RuO2

Abstract

Developing efficient electrocatalysts for the neutral oxygen evolution reaction (OER) is important but still challenging. Herein, by combining density functional theory calculations and experiments, we have demonstrated that the decoration of RuO₂ can effectively accelerate the OER kinetics of Co₃O₄ in neutral electrolyte. High activity (365 mV at 10 mA cm⁻²) and decent stability (up to 100 h) are achieved by RuO₂-decorated Co₃O₄ in 1 M PBS electrolyte.