研究了热分解法制备的Ti/SnO2十Sb2O3/PbO2电极性能以及该电极在硫酸溶液中作阳极使用的电化学特性. ESEM实验结果表明,所制备的锡锑中间层表面致密有序,能有效阻止新生态氧向基体扩散,延缓了绝缘的TiO2层生成.循环伏安曲线表明在析氧过程中,电极表面的组成会发生改变.所制电极在电流密度为4.0A/cm2、60.0℃、1.0mol/LH2SO4溶液中作阳极使用时其寿命可达30h.
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 H2SO4 solution.
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