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

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

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

The electrochemical behaviour of Ir(1 1 1) electrodes has been studied in simple aqueous solutions, in the presence and absence of various adsorbates: sulphate, phosphate and halide anions. In general, this electrode is very similar to Pt(1 1 1); however, the rates and relative strengths of adsorption are different. In the accessible potential range no capacitance peak similar to that of Pt(1 1 1) was found, and no Gouy-Chapman minimum could be identified. CO adlayer stripping from Ir(1 1 1) in sulphuric acid occurs in the same potential region as for Pt(1 1 1).

Original languageEnglish
Pages (from-to)69-75
Number of pages7
JournalJournal of Electroanalytical Chemistry
Volume582
Issue number1-2
DOIs
Publication statusPublished - Aug 15 2005

Fingerprint

Voltammetry
Electrodes
Adsorbates
Carbon Monoxide
Sulfates
Anions
Phosphates
Capacitance
Negative ions
Adsorption
Acids

Keywords

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

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Analytical Chemistry
  • Electrochemistry

Cite this

Voltammetry and impedance measurements of Ir(1 1 1) electrodes in aqueous solutions. / Pajkossy, T.; Kibler, L. A.; Kolb, D. M.

In: Journal of Electroanalytical Chemistry, Vol. 582, No. 1-2, 15.08.2005, p. 69-75.

Research output: Contribution to journalArticle

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