Study of electropolishing of a Zn anode in acidic medium

M. Novák, Á Szücs

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2 Citations (Scopus)

Abstract

Electropolishing of a Zn anode was studied by voltammetric, open-circuit potential decay and photoelectrochemical measurements. The experiments give evidence for the existence of a solid layer on the surface. The solubility of this layer determines the surface concentration of the metal ions and thus the rate of diffusion. The thickness of the layer varies with the polarization potential but is independent of the hydrodynamic conditions. The layer is an n-type semiconductor and is probably an amorphous zinc oxide or hydroxide. Our results indicate a key role for water, but the rate determining step cannot be the diffusion of water to the electrode surface.

Original languageEnglish
Pages (from-to)157-172
Number of pages16
JournalJournal of Electroanalytical Chemistry
Volume266
Issue number1
DOIs
Publication statusPublished - Jul 10 1989

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ASJC Scopus subject areas

  • Analytical Chemistry
  • Chemical Engineering(all)
  • Electrochemistry

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