不锈钢基/β-PbO2-TiO2-CO3O4复合镀层制备及其性能表征

摘要

使用直流复合电沉积方法制备不锈钢基β-PbO2、TiO2掺杂β-PbO2、Co3O4掺杂β-PbO2、TiO2和Co3O4共掺杂β-PbO2复合镀层材料.采用SEM、EDS、XRD和电化学测试等对复合电极进行形貌、成分、组成和催化活性表征,并且将不锈钢基/β-PbO2-TiO2-Co3O4电极应用到锌电积实验中.结果表明,添加Co3O4能提高PbO2电极的催化活性；添加TiO2可以起到细化晶粒,增大比表面积的作用；不锈钢基β-PbO2-TiO2-Co3O4复合镀层阳极与Pb-Ag合金阳极相比,锌电积槽电压降低为2.97V,电流效率提高到91.2％,使用寿命延长.%β-PbO2, TiO2 -doped β-PbO2, Co3O4-doped β-PbO2 and TiO2/Co3O4-doped β-PbO2 composite electrodes were prepared on stainless steel by current electrodeposition. The morphology, elemental composition, structure and catalytic activity of the composite electrodes were characterized by SEM, EDS, XRD and electrodeposition. The results show that the doping of TiO2 refines crystal grains and increases surface area, and the doping of Co3O4 improves the catalytic activity of the oxygen evolution. Compared with Pb-Ag electrode, the β-PbO2-TiO2-Co3O4 composite anode has longer life, and the bath voltage was decreased to 2. 97 V, and the current efficiency was increased to 91. 2% in zinc eleclrowinng.