Rotating Disc Electrodes: The Theory of Chronoamperometry and Its Use in Mechanistic Investigations

A general computational strategy is presented for the calculation of the chronoamperometric responses arising from potential-step experiments at rotating disc electrodes. The method is applicable to a wide range of electrode reaction mechanisms and theoretical results are given for single- and doubl...

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Bibliographic Details
Published in:Proceedings of the Royal Society of London. Series A, Mathematical and physical sciences Mathematical and physical sciences, 1988-07, Vol.418 (1854), p.113-154
Main Authors: Compton, R. G., Laing, M. E., Mason, D., Northing, R. J., Unwin, P. R.
Format: Article
Language:English
Subjects:
Bards
Boundary conditions
Cartesianism
Chemistry
Diffusion coefficient
Electrochemistry
Electrodes
Electron transfer
Electrons
Exact sciences and technology
General and physical chemistry
Kinetics
Reaction mechanisms
Steady state current
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Summary:A general computational strategy is presented for the calculation of the chronoamperometric responses arising from potential-step experiments at rotating disc electrodes. The method is applicable to a wide range of electrode reaction mechanisms and theoretical results are given for single- and double-potential-step experiments for ECE, DISP1, DISP2, EC' and CE reactions. For the last, the treatment is extended to cover the case where reactants have grossly unequal diffusion coefficients. Steadystate behaviour is also deduced. The extent to which the various mechanistic pathways can be distinguished is identified and the necessary experiments defined.
ISSN:1364-5021
0080-4630
1471-2946
2053-9169
DOI:10.1098/rspa.1988.0076