不锈钢基/β-PbO_2-TiO_2-Co_3O_4复合镀层制备及其性能表征  

Preparation and Characterization of β-PbO_2-TiO_2-Co_3O_4 Composite Coating on Stainless Steel

作　　者：石凤浜[1] 陈步明[1] 郭忠诚[1] 段司奇[1] 郈亚丽[1] 

机构地区：[1]昆明理工大学冶金与能源工程学院,昆明650093

出　　处：《应用化学》2012年第6期691-696,共6页Chinese Journal of Applied Chemistry

基　　金：国家自然科学基金(51004056);云南省应用基础研究基金(2010ZC052)资助项目

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2.97 V,电流效率提高到91.2%,使用寿命延长。β-PbO2, TiO2-doped β-PbO2, Co304-doped β-PbO2 and TiO2/Co304-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 Co304 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 electrowinng.

关 键 词：不锈钢 PbO2 TIO2 CO3O4 锌电积 

分 类 号：O646[理学—物理化学]