TY - JOUR
T1 - Electrochemical and anodic behaviors of MnO2/Pb nanocomposite in zinc electrowinning
AU - Karbasi, Maryam
AU - Keshavarz Alamdari, Eskandar
AU - Amirkhani Dehkordi, Elahe
AU - Tavangarian, Fariborz
N1 - Publisher Copyright:
© 2018, Springer Science+Business Media B.V., part of Springer Nature.
PY - 2018/3/1
Y1 - 2018/3/1
N2 - 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.].
AB - 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.].
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U2 - 10.1007/s10800-018-1163-9
DO - 10.1007/s10800-018-1163-9
M3 - Article
AN - SCOPUS:85041544690
SN - 0021-891X
VL - 48
SP - 379
EP - 390
JO - Journal of Applied Electrochemistry
JF - Journal of Applied Electrochemistry
IS - 3
ER -