Electrochemistry of Iodide in Propylene Carbonate: II . Theoretical Model

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Abstract
An algorithm based on Duhamel's superposition integral is used to simulate cyclic voltammograms for iodide electrochemistry on platinum in propylene carbonate. The electrochemistry is represented by the reaction sequence where reaction [ I ] is rate limited (Butler‐Volmer kinetics) and reaction [ II ] is reversible (Nernst equilibrium behavior). Since the nonunity stoichiometries and Butler‐Volmer kinetics in the reaction sequence prohibit the use of analytical solution techniques, the superposition‐integral algorithm is used as a fast and accurate method for the numerical simulation. The simulated voltammograms for the iodide system agree very well with experimental observations and support the proposed reaction sequence.

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