Characteristics and Electrochemical Behaviors of Ti/SnO_2+Sb2O_3/PbO_2 Anode Prepared by Thermal Decomposition

The characteristics and electrochemical behavior of Ti/SnO2+Sb2O3/PbO2 anode prepared by thermal decomposition in sulphuric acid solution were studied. The ESEM results showed that the SnSb intermediate oxide layer of the electrode was compact and ordered, so it could effectively prevent the diffusion of new-born oxygen toward Ti substrate and delay the forming of insulated TiO2 layer. The cyclic voltammetry results indicated that the compositions of electrode surface were changed in the course of oxygen evolution. At the same time, the anode lifetime of 30h was also assessed by the accelerated lifetime test in the 1.0 mol/L H2S04 solution.