Preparation, characterization and electrochemical properties of La2CuO4@Au as a novel bifunctional oxygen electrode

Abstract

In this paper, a novel bifunctional oxygen electrode, La2CuO4@Au, was synthesized using the sol-gel method. Thermogravimetry differential thermal analysis (TG-DTA) was used to analyze the formation mechanism and crystallization temperature. The crystal structure and surface morphologies of La2CuO4 were determined by X-ray diffraction (XRD) and scanning electron microscope (SEM), respectively. The CV curves of 0.1M KOH electrolyte saturated with N2 and O2 showed that La2CuO4@Au had excellent catalytic activity for oxygen reduction reaction (ORR).