Double potential step chronoamperometry at microdisk electrodes: simulating the case of unequal diffusion coefficients

O.V. Klymenko, R.G. Evans, Christopher Hardacre, I.B. Svir, R.G. Compton

Research output: Contribution to journalArticlepeer-review

79 Citations (Scopus)

Abstract

An efficient approach to the simulation of the double potential step chronoamperometry at a microdisk electrode based on an exponentially expanding time grid and conformal mapping of the space is presented. The dimensionless second potential step flux data are included as a function of the first potential step duration and the ratio of the diffusion coefficients of the reacting species allowing instant analysis of the experimental double potential step chronoamperograms without a need for simulation. The values of the diffusion coefficients are determined for several test systems and found to be in good agreement with existing literature data. (C) 2004 Elsevier B.V. All rights reserved.
Original languageEnglish
Pages (from-to)211-221
Number of pages11
JournalJournal of Electroanalytical Chemistry
Volume571 (2)
Issue number2
DOIs
Publication statusPublished - 01 Oct 2004

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Analytical Chemistry
  • Electrochemistry

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