, Volume 23, Issue 11, pp 3235–3243 | Cite as

Electrodeposition study of simulated and dissolution solutions of the positive electrode of a spent Ni-MH battery using the electrochemical quartz crystal microbalance and inductively coupled plasma optical emission spectrometry

  • P.V.M. Dixini
  • V.C.B. Pegoretti
  • V.G. Celante
  • F.S. Betim
  • M.B.J.G. Freitas
Original Paper


The use of electrochemical quartz crystal microbalance (EQCM) and inductively coupled plasma optical emission spectrometry (ICP-OES) as well as potentiodynamic and potentiostatic methods has revealed the electrodeposition mechanism from simulated solutions containing Ni2+, Co2+, Zn2+, and Mn2+, and a leached solution from cathodes of spent Ni-MH batteries. For simulated solutions, electrodeposition occurs via direct reduction, involving two electrons. Zn2+ addition in the solution containing Ni2+ and Co2+ leads to a change in the electrodeposition potential for more negative values. Mn2+ addition in the bath containing Ni2+, Co2+, and Zn2+ does not change the electrodeposition process. The electrodeposition from the leached solution occurs in parallel with the hydrogen and oxygen reduction, with the passage of 4 mol of electrons. The MM/z ratios calculated using ICP-OES are very similar to those obtained by EQCM measurements, revealing the appropriateness of the mechanisms proposed in this work.


Batteries Electrochemical characterizations Anodes Thin films 



The authors acknowledge CAPES and UFES for the financial support and IFES/Aracruz for EQCM equipment.


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Copyright information

© Springer-Verlag Berlin Heidelberg 2017

Authors and Affiliations

  • P.V.M. Dixini
    • 1
    • 2
  • V.C.B. Pegoretti
    • 1
  • V.G. Celante
    • 1
    • 2
  • F.S. Betim
    • 1
  • M.B.J.G. Freitas
    • 1
  1. 1.Chemistry Department, Laboratory of Electrochemistry and ElectroanalyticsFederal University of Espírito SantoVitóriaBrazil
  2. 2.Federal Institute of Education, Science, and Technology of Espírito SantoAracruzBrazil

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