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

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

Research output: Article

32 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

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ASJC Scopus subject areas

  • Analytical Chemistry
  • Chemical Engineering(all)
  • Electrochemistry

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