Simultaneous Reactions on a Rotating-Disk Electrode

Author(s)

Ralph E. White, University of South Carolina - ColumbiaFollow
John Newman, University of California - Berkeley

Document Type

Article

Abstract

Multiple reactions at a rotating-disk electrode are modeled. The governing equations are used to generate a parameter which characterizes the effect of a side reaction on the limiting-current curve of a main reaction. Various predicted current-potential curves illustrate the importance of this parameter for copper deposition with simultaneous formation of dissolved hydrogen at a disk electrode rotating in a copper sulfate solution containing sulfuric acid.

Distributions of current, potential, and surface concentration on the disk indicate that in some cases the main reaction can be below its limiting rate at the center of the disk while hydrogen gas bubbles may be formed near the edge. In addition, predicted and measured limiting-current curves for this system are compared.

Publication Info

Published in Journal of Electroanalytical Chemistry and Interfacial Electrochemistry, Volume 82, Issue 1-2, 1977, pages 173-186.

Rights

Copyright 1977 Elsevier.

White, R. & Newman, J. (1977). Simultaneous Reactions on a Rotating-Disk Electrode. Journal of Electroanalytical Chemistry and Interfacial Electrochemistry, 82(1-2), 173-186. http://dx.doi.org/10.1016/S0022-0728(77)80256-8