Voltammetry and impedance measurements of Ir(1 0 0) electrodes in aqueous solutions

T. Pajkossy, L. A. Kibler, D. M. Kolb

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

The electrochemical behavior of Ir(1 0 0) electrodes has been characterized in various aqueous solutions. In general, this electrode behaves very similarly to the other single crystalline ones of the platinum group. As to special features, in perchloric acid solution the potential of the zero total charge was found to be within a sharp peak due to adsorption/desorption of hydrogen and anions; in the double-layer region there are indications of perchlorate reduction. In the accessible potential range no capacitance peak like that of Pt(1 1 1) was observed, and no Gouy-Chapman minimum could be identified.

Original languageEnglish
Pages (from-to)113-118
Number of pages6
JournalJournal of Electroanalytical Chemistry
Volume600
Issue number1
DOIs
Publication statusPublished - Feb 1 2007

Keywords

  • Adsorption
  • Capacitance
  • Carbon monoxide
  • Double-layer
  • Iridium
  • Potential of zero charge

ASJC Scopus subject areas

  • Analytical Chemistry
  • Chemical Engineering(all)
  • Electrochemistry

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