▎ 摘　　要

IrO2-Ta2O5 coated titanium anodes with different graphene contents (Ti/IrO2-Ta2O5-G) were prepared by the thermal decomposition method. The microstructure and the composition were analyzed using the filed-emission scanning electron microscope and the energy dispersive spectrometer, and the electrochemical properties were investigated by electrochemical tests including cyclic voltammetry, anode polarization and electrochemical impedance spectroscopy. Results show that The Ti/IrO2-Ta2O5-G anode with 0.4g.L-1 graphene content presents the best electrochemical performance. As compared with the traditional Ti/IrO2-Ta2O5 anode, Ti/IrO2-Ta2O5-G anodes display the rugged morphology with tiny cracks which can provide more active centers, increase the electrochemically active surface area and thus enhance the electrocatalytic activity for the oxygen evolution process.