On the impedance response of reactions influenced by mass transfer
- Autores: Tran M.1, Tribollet B.1, Vivier V.1, Orazem M.2
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Afiliações:
- Laboratoire Interfaces et Systèmes Electrochimiques
- Department of Chemical Engineering
- Edição: Volume 53, Nº 9 (2017)
- Páginas: 932-940
- Seção: 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
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Resumo
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.
Sobre autores
Mai Tran
Laboratoire Interfaces et Systèmes Electrochimiques
Email: meo@che.ufl.edu
França, Paris, F-75005
Bernard Tribollet
Laboratoire Interfaces et Systèmes Electrochimiques
Email: meo@che.ufl.edu
França, Paris, F-75005
Vincent Vivier
Laboratoire Interfaces et Systèmes Electrochimiques
Email: meo@che.ufl.edu
França, Paris, F-75005
Mark Orazem
Department of Chemical Engineering
Autor responsável pela correspondência
Email: meo@che.ufl.edu
Estados Unidos da América, Gainesville, FL, 32611