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Electrochemical and anodic behaviors of MnO2/Pb nanocomposite in zinc electrowinning

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Abstract

In this study, the electrochemical and anodic behaviors of MnO2/Pb anodes in electrowinning process were investigated. An accumulative roll-bonding (ARB) method was applied to fabricate MnO2/Pb nanocomposites. The electrochemical properties of the produced anodes were investigated by electrochemical impedance spectroscopy, cyclic voltammetry, electrowinning tests, and scanning electron microscopy. The results indicated that the ARB-process is an appropriate method to develop MnO2/Pb anodes. The produced anodes (Pb–0.5%MnO2-10pass samples) showed a 102% increase in current density compared to pure lead anode. The results of electrowinning tests revealed that Pb–0.5%MnO2-10pass samples had the best anodic performance with a significantly lower corrosion rate, product and electrolyte contamination, slime formation, energy consumption, and a higher current efficiency and consequently, a higher Zn deposition in cathode.

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Authors and Affiliations

  1. Department of Materials Engineering, Isfahan University of Technology, 84156-83111, Isfahan, Iran

    Maryam Karbasi & Elahe Amirkhani Dehkordi

  2. Department of Mining and Metallurgical Engineering, Amirkabir University of Technology, 15875-4413, Tehran, Iran

    Eskandar Keshavarz Alamdari

  3. Mechanical Engineering Program, School of Science, Engineering and Technology, Pennsylvania State University, Harrisburg, Middletown, PA, 17057, USA

    Fariborz Tavangarian

Authors
  1. Maryam Karbasi
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  2. Eskandar Keshavarz Alamdari
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  3. Elahe Amirkhani Dehkordi
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  4. Fariborz Tavangarian
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Correspondence to Fariborz Tavangarian.

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Karbasi, M., Keshavarz Alamdari, E., Amirkhani Dehkordi, E. et al. Electrochemical and anodic behaviors of MnO2/Pb nanocomposite in zinc electrowinning. J Appl Electrochem 48, 379–390 (2018). https://doi.org/10.1007/s10800-018-1163-9

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  • DOI: https://doi.org/10.1007/s10800-018-1163-9

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