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Citation: YANG Jian, CHEN Buming, WANG Shuai, GUO Zhongcheng. Effects of Chloride Ion on the Properties of Al/Pb Alloy/β-PbO₂ Composite Anode During Zinc Electrowinning[J]. Chinese Journal of Applied Chemistry, ;2015, 32(8): 955-962. doi: 10.11944/j.issn.1000-0518.2015.08.140434 shu

Effects of Chloride Ion on the Properties of Al/Pb Alloy/β-PbO₂ Composite Anode During Zinc Electrowinning

1.
a Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China;
2.
b Kunming Hendera Science and Technology Co. Ltd., Kunming 650106, China

Corresponding author: CHEN Buming,
Received Date: 19 December 2014
Available Online: 10 March 2015
Fund Project: 国家自然科学基金资助项目(51004056) (51004056)

The anodic behavior of Al/Pb-0.3% Ag-0.06% Ca/β-PbO₂ composite electrode in the acidic zinc sulphate containing different concentrations of Cl^- was studied.The microstructures were investigated by scanning electron microscopy (SEM) and X-ray diffraction (XRD).With the increase of Cl^- concentration,the oxygen evolution overpotential,impedance and corrosion rate increase gradually;the intensity of diffraction peak of β-PbO₂ and α-PbO₂ decreases gradually;the dendritic crystal clusters on the anode surface disappear.When the Cl^- concentration is 300 mg/L,the apparent current density (i₀) of the anode reaches maximum and the anode shows the best electrochemical properties and corrosion resistance.
- Al substrate,
- lead alloy anode,
- electrochemical properties,
- chloride ion,
- corrosion resistance
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Effects of Chloride Ion on the Properties of Al/Pb Alloy/β-PbO2 Composite Anode During Zinc Electrowinning

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Effects of Chloride Ion on the Properties of Al/Pb Alloy/β-PbO₂ Composite Anode During Zinc Electrowinning