锌电积用铝基Pb-Ag-Co复合阳极材料的制备及性能研究(英文)  

Preparation and Properties of Al/Pb-Ag-Co Composite Anode Material for Zinc Electrowinning

作　　者：杨海涛[1,2] 陈步明[1] 刘建华[3] 郭忠诚[1,4] 张永春[1] 徐瑞东[1] 

机构地区：[1]昆明理工大学,云南昆明650093 [2]中国科学院过程工程研究所多相复杂系统国家重点实验室,北京100190 [3]中南大学,湖南长沙410083 [4]昆明理工恒达科技股份有限公司,云南昆明650106

出　　处：《稀有金属材料与工程》2014年第12期2889-2892,共4页Rare Metal Materials and Engineering

基　　金：National Natural Science Foundation of China(51004056);Opening Foundation of Key Laboratory of Inorganic Coating Materials,Chinese Academy of Sciences(KKZ6201152009);Specialized Research Fund for the Doctoral Program of Higher Education(20125314110011);Applied Basic Research Foundation of Yunnan Province(2010ZC052);Applied Basic Research Key Plans Program of Yunnan Province(2014FA024)

摘　　要：通过电沉积的方法制备了Al/Pb-0.3wt%Ag-0.01wt%Co和Al/Pb-0.3wt%Ag复合阳极材料。通过阳极极化曲线,循环伏安曲线和塔菲尔曲线技术研究了复合阳极材料在50g/L Zn2+,150g/L H2SO4溶液体系下的电化学行为。通过扫描电子显微镜和能谱技术分析测试了表面微观结构。结果表明钴的引入可以降低阳极析氧电位,并提高阳极耐腐蚀性。与铸造的Pb-0.3wt%Ag合金相比,复合阳极Al/Pb-0.3wt%Ag和Al/Pb-0.3wt%Ag-0.01wt%Co的表面氧化层更加致密,晶粒更加细小。The Al/Pb-0.3wt%Ag-0.01wt%Co and A1/Pb-0.3wt%Ag composite anode materials were prepared by electrodeposition. The electrochemical properties of the composite anode in 50 g/L Zn2＋ and 150 g/L H2SO4 solutions were investigated by anode po- larization curves, cyclic voltammetry （CV） curves and Tafel curves. The surface structure was characterized by SEM and EDS. The results show that the cobalt addition can reduce the oxygen evolution potential and improve the corrosion resistance. Compared with cast Pb-0.3wt%Ag, the anodized layer of the A1/Pb-0.3wt%Ag and A1/Pb-0.3wt%Ag-0.01wt%Co are more dense, the grains are finer.

关 键 词：锌电积 Al/Pb-Ag-Co 阳极 电化学行为 微观结构 

分 类 号：TB331[一般工业技术—材料科学与工程]