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采用复合电沉积法制备了铝基PbO2-WC-CeO2复合电极材料,其工艺流程主要包括除油、酸浸、碱浸、两次浸锌、闪镀镍、镀铅、阳极氧化和复合电镀。通过测定和分析电极在电解锌溶液(ZnSO4·7H2O 250～300g/L,Na2SO4 250g/L,H3BO3 15～20g/L)中的Tafel曲线、析氧曲线、槽电压、交换电流密度和强效腐蚀试验等比较了新型PbO2-WC-CeO2复合电极与传统Pb-Ag(0.75)合金电极的耐腐蚀性能、节能性能和催化活性。从实验室水平证明了相对于传统Pb-Ag(0.75)合金电极,新型铝基PbO2-WC-CeO2电极在耐腐蚀性、节能和催化活性方面均有很大改善。
The composite electrode material of aluminum-based PbO2-WC-CeO2 was prepared by the composite electrodeposition method. The technological process mainly includes degreasing, acid leaching, alkali leaching, twice dipping zinc, flash nickel plating, lead plating, anodic oxidation and composite electroplating. By measuring and analyzing the Tafel curve, the oxygen evolution curve, the cell voltage, the exchange current density and the pitting corrosion of the electrode in electrolytic zinc solution (ZnSO4 · 7H2O 250-300g / L, Na2SO4 250g / L, H3BO3 15-20g / L) The corrosion resistance, energy saving and catalytic activity of the new PbO2-WC-CeO2 composite electrode and the conventional Pb-Ag (0.75) alloy electrode were compared. From the laboratory level, the new aluminum-based PbO2-WC-CeO2 electrode shows a great improvement in corrosion resistance, energy saving and catalytic activity compared to the conventional Pb-Ag (0.75) alloy electrode.