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Technical Note

Diffusion-Controlled Chronoamperometry at a Disk Electrode

Peter J. Mahon* and Keith B. Oldham

Research School of Chemistry, Australian National University, Canberra, ACT 0200, Australia, and Chemistry Department, Trent University, Peterborough, Ontario, Canada K9J 7B8

Anal. Chem., 2005, 77 (18), pp 6100–6101

DOI: 10.1021/ac051034y

Publication Date (Web): August 16, 2005

Corresponding author. Phone: +61 2 6125 4028. Fax: +61 2 6125 3216. E-mail: mahon@rsc.anu.edu.au.

Abstract

An accurate formula exists for describing the decay of the current following the imposition of extreme concentration polarization on a disk electrode under diffusion-controlled conditions. It has been amply validated by diverse simulations and is presented here in a more compact form than hitherto. The formula finds application beyond the realm of potential-step chronoamperometry.

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