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

Maryam Karbasi, Eskandar Keshavarz Alamdari, Elahe Amirkhani Dehkordi, Fariborz Tavangarian

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

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. Graphical Abstract: [Figure not available: see fulltext.].

Original languageEnglish (US)
Pages (from-to)379-390
Number of pages12
JournalJournal of Applied Electrochemistry
Volume48
Issue number3
DOIs
StatePublished - Mar 1 2018

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Electrochemistry
  • Materials Chemistry

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