A Comparative Study of Nickel Electrodeposition Using Deep Eutectic Solvents and Aqueous Solutions

Andrew Ballantyne, Andrew Abbott, Robert Harris, Jamil Juma, Karl S Ryder*, Greg Forrest

*Corresponding author for this work

Research output: Contribution to JournalArticlepeer-review

Abstract

Metal electrodeposition using ionic liquid electrolytes and deep eutectic solvents is now well known but to our knowledge for electrolytic deposition of metals such as nickel no direct comparison has thus far been drawn between deposition using aqueous solutions and DES under otherwise identical conditions. In the current study it is shown that nickel deposition can be carried out with similar deposition rates in aqueous and ionic media despite the significant differences in viscosity and conductivity. It is, however, shown that in ionic media the morphology of the deposits is markedly different from that achieved using a Watts nickel bath and that one aspect of these differences manifests itself in significant increase in the coating hardness. It is proposed that the observed morphology differences occur due to the variations of nickel speciation in each electrolyte environment.
Original languageEnglish
Pages (from-to)718-726
Number of pages9
JournalElectrochimica Acta
Volume176
Issue number10
Early online date18 Jul 2015
DOIs
Publication statusE-pub ahead of print - 18 Jul 2015

Bibliographical note

This publication was submittied while I was a research associate at the University of Leicester, before i started as an accademic. Paper was hosted at https://lra.le.ac.uk/handle/2381/32820

Keywords

  • Electroplating
  • Nickel
  • Deep eutectic solvents
  • Speciation

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