新型不锈钢基二氧化铅-碳化钨复合电极材料的研制

在不锈钢基上通过复合电沉积的方式制备了二氧化铅 碳化钨（PbO2-WC）电极。 考察了温度、电流、WC颗粒浓度对电极性能的影响；通过析氧曲线、Tafel曲线、扫描电子显微镜能谱、X射线衍射图谱考察了WC颗粒掺杂前后PbO2电极相关性能的变化。 结果表明，在最佳工艺即温度70 ℃、镀液中WC颗粒浓度为40 g/L时，电流密度为0.015～0.025 A/cm2；PbO2-WC共沉积过程中PbO2发生了择优生长，WC颗粒的加入能够细化PbO2晶粒，使镀层变得致密，相对于PbO2电极，PbO2-WC复合电极的耐腐蚀性上升，析氧过电位下降。

Preparation of New Stainless Steel Substrate Lead Dioxide-Tungsten Carbide Composite Inert Anode Material

The lead dioxide-tungsten carbide(PbO2-WC) electrodes were prepared on stainless steel substrate by composite electrodeposition. The influences of temperature, current density and WC granule concentration on electrode performance were studied. Analyses of oxygen evolution curves, Tafel curves, scanning electron microscope, X-ray diffraction were used to investigate the performance changes after modified by WC granule. The optimal conditions were obtained as follows, temperature:70 ℃, current density:0015～0.025 A/cm2, WC granule concentration in plating solution:40 g/L. In the process of codeposition, the results showed that the growth of PbO2 is preferred, with the PbO2 grain refined by WC granule, and the coating became denser. In comparison to the PbO2 electrode, the PbO2-WC composite electrode exhibits a stronger corrosion resistance and a lower oxygen evolution potential.