Abstract:The Ti/IrO2-SiO2 and Ti/IrO2-SiO2-CeO2 composite oxide anodes were prepared by thermal decomposition method. The apparent morphology of the electrode was characterized by SEM. The cyclic voltammetry curve and oxygen evolution polarization curve were used to characterize the electrocatalytic performance of self-made electrodes and commercial electrodes（Ir-Ru、Ir-Sn、Ir-Ta、Ir-Ta-Sn）. The cobalt was recovered from the cobalt chloride solution by a double-membrane three-compartment electrolytic reactor. The advantages and disadvantages of cell voltage, power consumption and chlorine inhibition performance of self-made electrodes and commercial electrodes were discussed. The results show that the doping of rare earth Ce is beneficial to improve the surface roughness, active surface area and electrocatalytic activity of the electrode. Compared with Ir-Si, Ir-Ru, Ir-Sn, Ir-Ta and Ir-Ta-Sn electrodes, the Ir-Si-Ce electrode has the lowest oxygen evolution potential and the highest electrocatalytic activity. In the experiment of recovering cobalt by electrodeposition method, the Ir-Si-Ce electrode cell has the lowest voltage and energy consumption and the best chlorine inhibition performance compared with other electrodes. The chlorine reduction rate of it is as high as 97.5%.