FILM FORMATION AND CURRENT OSCILLATIONS IN THE ELECTRODISSOLUTION OF Cu IN ACIDIC CHLORIDE MEDIA. PART I - EXPERIMENTAL STUDIES.

H. P. Lee, Ken Nobe, Arne J. Pearlstein

Research output: Contribution to journalArticlepeer-review

Abstract

Oscillatory behavior of Cu electrodissolution in various acidic chloride solutions was studied with rotating disk electrodes. Oscillations were not observed in the apparent Tafel region. However, for 0. 5 and 1M Cl minus , nonsustained oscillations were found in the peak-current, current-minimum, and current-plateau regions. At potentials above the current-plateau region, apparent sustained oscillations were observed. Oscillatory behavior disappeared at sufficiently high rotation rates. Film dissolution studies indicate that the CuCl film begins to form at potentials near the peak current and suggest that oscillations only occur with the formation of a sufficiently thick film. A model based on the diffusion of chloride ions through the porous CuCl film to account for oscillatory behavior is proposed.

Original languageEnglish (US)
Pages (from-to)1031-1037
Number of pages7
JournalJournal of the Electrochemical Society
Volume132
Issue number5
DOIs
StatePublished - 1985
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films
  • Electrochemistry
  • Materials Chemistry

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