In order to improve the electric catalytic activity of the inert anode materials titanium base lead dioxide for zinc electro-deposition,the composite anode materials modified titanium base lead dioxide doped with nano CeO2 particles were prepared by a-nodic oxidation method. The microstructure and elemental composition of the electrode were investigated by SEM and EDS. The phase of the coating was analyzed by XRD. The electric catalytic properties of composite anode material at different CeO2 additive a-mount was studied by cyclic voltammetry curve(CV),AC impedance(EIS)in electrolytic zinc liquid. Scanning electron microscopy (SEM)was used to characterize the essential reason for the increase of electrocatalytic activity of electrode materials. The results in-dicated that:CeO2 and β-PbO2-WC composite electrodeposition can enhance the electrocatalytic activity of oxygen evolution,when the content of CeO2 was 16g/L-1 ,the electrode had the highest surface roughness and the maximum number of surface active sites. The results show that the rare earth Ce plays a role in the hole initiator,which increases the effective surface area of the coating and improves the catalytic activity of the electrode.%为了提高锌电积用惰性阳极材料钛基二氧化铅在电解锌液中的析氧电催化活性,采用阳极氧化法制备了掺杂纳米CeO2颗粒改性的钛基二氧化铅复合阳极材料.通过扫描电子显微镜和能谱仪表征电极形貌及元素组成,利用X-射线衍射仪对镀层物相进行分析.利用循环伏安曲线(CV)和交流阻抗(EIS)研究纳米CeO2添加量对复合阳极材料在电解锌液中的表面粗糙度的影响,并辅以扫描电镜表征了电极材料电催化活性提高的本质原因.结果表明:CeO2与β-PbO2-WC复合电沉积能增强析氧电催化活性,当CeO2含量为16g·L-1时,电极具有最高的表面粗糙度,表面活性点数目最多.由此证实稀土Ce起到孔引发剂的作用,使涂层的有效活性表面积增大,提高电极析氧催化活性.
展开▼
