▎ 摘　　要

The IrO2-Ta2O5 coated titanium anodes with different graphene contents (Ti/IrO2-Ta2O5-G) were prepared by a thermal decomposition method. The microstructure was analyzed by FESEM and EDX, and the electrochemical properties were investigated by electrochemical testing including cyclic voltammetry (CV), anode polarization curves, and electrochemical impedance spectroscopy (EIS). The results indicate that the Ti/IrO2-Ta2O5-G anodes possess rugged surface morphology with tiny cracks, offering more active centers for oxygen evolution reaction and have larger electrochemically active surface area and better electrocatalytic activity for oxygen evolution, compared with the traditional Ti/IrO2-Ta2O5 anode. The Ti/IrO2-Ta2O5-G anode with 0.4 g.L-1 graphene content presents the best electrochemical performance.