On the impedance response of reactions influenced by mass transfer
- Authors: Tran M.T.1, Tribollet B.1, Vivier V.1, Orazem M.E.2
-
Affiliations:
- Laboratoire Interfaces et Systèmes Electrochimiques
- Department of Chemical Engineering
- Issue: Vol 53, No 9 (2017)
- Pages: 932-940
- Section: Section 1. Mass and Charge Transfer
- URL: https://journals.rcsi.science/1023-1935/article/view/189028
- DOI: https://doi.org/10.1134/S1023193517090142
- ID: 189028
Cite item
Abstract
A direct relationship is derived between the charge-transfer resistance and the resistive terms ascribable to diffusion for a faradaic reaction influenced by transport of the reacting species to the electrode. The charge-transfer resistance is shown to approach a finite value for potentials at which the current is limited by mass transfer and, conversely, the diffusion impedance approaches a finite value when the current is controlled by kinetics. Supporting experimental results are presented for both an irreversible (oxygen reduction reaction) and a quasi-reversible (ferrocyanide oxidation) electrochemical systems investigated with a rotating- disk electrode.
About the authors
Mai T. T. Tran
Laboratoire Interfaces et Systèmes Electrochimiques
Email: meo@che.ufl.edu
France, Paris, F-75005
Bernard Tribollet
Laboratoire Interfaces et Systèmes Electrochimiques
Email: meo@che.ufl.edu
France, Paris, F-75005
Vincent Vivier
Laboratoire Interfaces et Systèmes Electrochimiques
Email: meo@che.ufl.edu
France, Paris, F-75005
Mark E. Orazem
Department of Chemical Engineering
Author for correspondence.
Email: meo@che.ufl.edu
United States, Gainesville, FL, 32611