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

Journal article

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. © 2004 Elsevier B.V. All rights reserved.

Authors: Klymenko, O; Evans, R; Hardacre, C; Svir, I; Compton, R

• Publication status: Published
• Journal: JOURNAL OF ELECTROANALYTICAL CHEMISTRY
• Volume: 571
• Issue: 2
• Pages: 211-221
• Publication date: 2004-10-01
• DOI: 10.1016/j.jelechem.2004.05.012
• ISSN: 0022-0728
• Language: English
• Keywords: double potential step chronoamperometry; microdisk electrode; simulation; unequal diffusion coefficients