Oxygen evolution and corrosion behavior of low-MnO2-content Pb-MnO2 composite anodes for metal electrowinning
作者： Ruixin Ma , Shiyao Cheng , Xiaoyong Zhang , Shina Li , Zilin Liu
DOI: 10.1016/J.HYDROMET.2015.10.031
关键词: Electrowinning 、 Chemistry 、 Electrolysis 、 Scanning electron microscope 、 Anode 、 Corrosion 、 Metallurgy 、 Polarization (electrochemistry) 、 Composite number 、 Oxygen evolution
摘要: In this study, the oxygen evolution and corrosion behavior of Pb-MnO 2 composite anodes produced by powder pressing with low MnO 2 content (1–7 wt%) were systematically investigated in H 2 SO 4 solution and compared to pure Pb and Pb–Ag (1 wt%) anodes. Galvanostatic polarization, weight loss, and ionic equilibrium techniques were employed to evaluate the electrocatalytic activity and corrosion resistance of the composite anodes. The results demonstrated that Pb-MnO 2 composite anodes presented lower potential than that …
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