Simulation and Fitting of Cyclic Voltammetry and Chronoamperometry Curves of Electrochemical Reactions with Different Mechanisms — A Didactic Perspective

Achim Habekost^1,

¹University of Ludwigsburg, Department of Chemistry, Ludwigsburg, Germany

Cite this paper:
Achim Habekost. Simulation and Fitting of Cyclic Voltammetry and Chronoamperometry Curves of Electrochemical Reactions with Different Mechanisms — A Didactic Perspective. World Journal of Chemical Education. 2019; 7(2):53-64. doi: 10.12691/wjce-7-2-4

Abstract

Electrochemical simulations are presented to introduce students to the capabilities of cyclic voltammetry (CV). The systems chosen involve one and two-electron transfers, and can be delineated with CV as being reversible, quasi-reversible, or irreversible. The rate constants for the electron transfer can be estimated by the theory of Nicholson and Shain. DigiElch, professional^® provides the opportunity of fitting experimental CVs after assuming a reaction scheme. We will demonstrate data fitting for two different mechanisms, electron transfer E and electron transfer followed by a chemical reaction with a subsequent electron transfer of the product ECE.

Keywords:
(Spectro-)Electrochemistry electrochemical simulation and fitting with DigiElch professional^®

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