| 引用本文: | 关永永,徐瑞东,黄利平,陈汉森,何世伟.碳化钨对复合惰性阳极材料电化学性能的影响[J].材料科学与工艺,2014,22(5):66-72.DOI:10.11951/j.issn.1005-0299.20140512. |
| GUAN Yongyong,XU Ruidong,HUANG Liping,CHEN Hansen,HE Shiwei.Effects of tungsten carbide on electrochemical properties of composite inert anodes[J].Materials Science and Technology,2014,22(5):66-72.DOI:10.11951/j.issn.1005-0299.20140512. |
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| 碳化钨对复合惰性阳极材料电化学性能的影响 |
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关永永1,2,徐瑞东1,2,黄利平3,陈汉森1,2,何世伟1,2
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(1. 昆明理工大学 省部共建复杂有色金属资源清洁利用国家重点实验室,昆明 650093; 2.昆明理工大学 冶金与能源工程学院,昆明 650093;3.中国科学院 特种无机涂层重点实验室,上海 200050)
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| 摘要: |
| 为寻找一种适合锌电积用Pb-Ag合金阳极的替代材料,在铝合金基体表面采用脉冲电沉积从镀液中制备了Al/Pb/α-PbO2-WC复合惰性阳极材料,研究了制备镀液中WC添加量对复合惰性阳极材料在锌电积模拟溶液中电化学性能的影响,测试了阳极极化曲线、塔菲尔极化曲线和循环伏安曲线.结果表明:复合惰性阳极材料在锌电积模拟溶液中的析氧过电位随制备镀液中WC颗粒添加量的增加先降低后升高,WC颗粒的质量浓度控制在30 g/L时,制备的复合惰性阳极材料析氧电催化活性最好；测试电流密度为500 A/m2时,Al/Pb/α-PbO2-WC复合惰性阳极材料的析氧过电位比Al/Pb/α-PbO2降低67 mV,比Pb-1.0%Ag合金降低126 mV；复合惰性阳极材料在锌电积模拟溶液中的腐蚀电位较高,腐蚀电流密度较低,耐腐蚀性较好. |
| 关键词: 复合惰性阳极 二氧化铅 碳化钨 脉冲电沉积 电化学性能 |
| DOI：10.11951/j.issn.1005-0299.20140512 |
| 分类号:TM241 |
| 基金项目:高等学校博士学科点专项科研基金(20125314110011)；国家自然科学基金资助项目(51004056)；中国科学院特种无机涂层重点实验室开放基金资助项目(KKZ6201152009);云南省应用基础研究计划重点项目(2014FA024). |
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| Effects of tungsten carbide on electrochemical properties of composite inert anodes |
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GUAN Yongyong1,2,XU Ruidong1,2,HUANG Liping3,CHEN Hansen1,2,HE Shiwei1,2
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(1.State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming 650093, China; 2.Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China; 3.Key Laboratory of Inorganic Coating Materials, Chinese Academy of Sciences, Shanghai 200050, China)
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| Abstract: |
| In search of a anodic material used in zinc electrowinning in place of Pb-Ag alloy, Al/Pb/α-PbO2-WC composite inert anodes on the surface of aluminum alloy substrates were prepared by pulse electrodeposition from a bath, the effects of WC concentrations in a original plating bath on the electrochemical properties of the composite inert anodes were researched in a synthetic zinc electrowinning simulated solution, and the anodic polarization curves, Tafel polarization curves and cyclic voltammetry curves were measured. The results show that the oxygen evolution overpotential of Al/Pb/α-PbO2-WC composite inert anodes firstly decrease and then increase with the increasing of WC concentrations in a original plating bath, and the best electrocatalytic activity of oxygen evolution is obtained under the WC concentration of 30 g/L. Compared with Al/Pb/α-PbO2 composite inert anode and Pb-1%Ag alloy, the oxygen evolution overpotentials of Al/Pb/α-PbO2-WC composite inert anodes reduce 67 mV and 126 mV respectively under 500 A/m2 testing current density. The composite inert anodes have higher corrosion potential and lower corrosion current density, displaying better corrosion resistance. |
| Key words: composite inert anodes lead dioxide tungsten carbide pulse electrodeposition electrochemical properties |
