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周向阳,马驰原,杨娟,王帅,王辉,龙波.锌电积工业用新型泡沫铝/Pb-0.6 wt%Ag合金复合阳极电化学性能研究[J].稀有金属材料与工程(英文),2018,47(10):3008~3014.[Zhou Xiangyang,Ma Chiyuan,Juan Yang,Wang Shuai,Wang Hui and Long Bo.A New Type Aluminum foam/Pb-0.6 wt%Ag Alloy Composite Anode with Improved Electrochemical Performance for Zinc Electrowinning Industry[J].Rare Metal Materials and Engineering,2018,47(10):3008~3014.]
A New Type Aluminum foam/Pb-0.6 wt%Ag Alloy Composite Anode with Improved Electrochemical Performance for Zinc Electrowinning Industry
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Received:March 13, 2017  Revised:September 08, 2018
DOI:
Key words: aluminum foam/Pb-0.6wt%Ag alloy composite anode  electrochemical performance  anodic layer  corrosion resistance  oxygen evolution reaction
Foundation item:国家自然科学基金(51304254和51274240);中国博士后科学基金(2015M580698)
Author NameAffiliation
Zhou Xiangyang,Ma Chiyuan,Juan Yang,Wang Shuai,Wang Hui and Long Bo  
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Abstract:
      In order to overcome defects of high over-potential and preparation cost existing in traditional Pb alloy anode, a new type aluminum foam/Pb-0.6wt%Ag alloy composite anode (AF/Pb-0.6 wt%Ag anode) was produced in this paper. And the electrochemical performance of AF/Pb-0.6 wt%Ag anode and traditional Pb-0.6 wt%Ag anode after 72 h galvanostic polarization were investigated comparatively in 160 g/L H2SO4 solution by chronopotentiometry(CP), scanning electron microscopy (SEM), electrochemical impedance spectroscopy (EIS) and Tafel measurements. The results show that the anodic layer of AF/Pb-0.6 wt%Ag anode is more intact than that of Pb-0.6wt%Ag anode, and exhibits better corrosion resistance. Moreover, the AF/Pb-0.6 wt%Ag anode shows a lower stable anodic potential, which is consist with the higher PbO2, lower PbO, PbO?PbSO4 content and Rct value obtained by CP and EIS measurements. It is also revealed that the AF/Pb-0.6 wt%Ag anode possesses better oxygen evolution reaction (OER).