Theoretical and Experimental Study of Hydrodynamically Modulated Current-Potential Curves at Rotating Disk Electrodes under Conditions of Mixed Electron and Mass Transfer Control
- 1 January 1974
- journal article
- Published by The Electrochemical Society in Journal of the Electrochemical Society
- Vol. 121 (12) , 1558-1562
- https://doi.org/10.1149/1.2401733
Abstract
When a rotating disk electrode is subjected to an appropriate superimposed sinusoidal modulation of its rotation speed, the modulated component of the disk current may be governed by both mass transport and kinetic processes. In this study, mixed electron transfer and convective diffusion control conditions are considered, and the relationships among modulated current response, average current, potential, relevant species concentrations, and kinetic and transport parameters are derived. The theoretical predictions are experimentally verified for the two limiting cases of totally reversible and irreversible reactions, and for the general case of mixed control.Keywords
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