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为了改善钛基β-PbO2电极的性能,以含SnCl4和SbCl3的异丙醇–浓盐酸混合液为原料,采用热沉积法制备了SnO2–Sb2O3底层,再采用电沉积方法在由PbO和NaOH组成的电解液中制备了α-PbO2中间层。利用扫描电镜(SEM)和X射线衍射(XRD)考察了SnO2–Sb2O3底层的形貌与结构,并研究了电沉积时的电流密度、温度和时间对α-PbO2中间层的影响。实验结果表明,SnO2–Sb2O3底层主要由SnO2晶体组成,其表面呈干裂泥土状。在电沉积α-PbO2中间层时,电流密度不宜大于3mA/cm2,温度宜为40~60°C,时间应控制在1.0h左右。
In order to improve the performance of the titanium-based β-PbO2 electrode, a SnO 2-Sb 2 O 3 substrate was prepared by thermal deposition using a mixture of isopropanol and concentrated hydrochloric acid containing SnCl 4 and SbCl 3 as raw materials. A-PbO2 interlayer was prepared. The morphology and structure of the bottom layer of SnO2-Sb2O3 were investigated by scanning electron microscopy (SEM) and X-ray diffraction (XRD). The effects of current density, temperature and time on the α-PbO2 interlayer were also studied. The experimental results show that the bottom layer of SnO2-Sb2O3 mainly consists of SnO2 crystals, and the surface of the layer is dry-cracked earth. In the electrodeposition of a-PbO2 intermediate layer, the current density should not be greater than 3mA / cm2, the temperature should be 40 ~ 60 ° C, the time should be controlled at about 1.0h.