Abstract
The Ti/Mn2O3-Co3O4 coating anodes synthesized via thermal decomposition, and their phase and morphology were characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), Field-Emission Scanning Electron Microscope (FE-SEM), and X-ray Photoelectron Spectroscopy (XPS). Electrochemical tests, including cyclic voltammetry (CV), linear sweep voltammetry (LSV), and electrochemical impedance spectroscopy (EIS), were conducted in a MnSO4 solution. Results indicated that the Ti/Mn2O3-Co3O4 anode with 10 mol% Co showed the best performance with a significantly higher voltammetric charge and a lower overpotential for the oxygen evolution reaction (OER) compared to Ti/Mn2O3 coating anode. The Co-Mn synergy enhanced oxygen adsorption on the anode surface, thereby improving OER electrochemical performance of Ti/Mn2O3-Co3O4 coating anodes. In addition, the Ti/Mn2O3-Co3O4 coating anode had a voltammetric charge 21 times higher than Pb-Ag alloy anodes.
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