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Journal Articles Journal of The Electrochemical Society Year : 1991

Diffusion‐Convection Impedance at Small Electrodes


The ac diffusion impedance at small electrodes has been calculated as a function of frequency for convective‐diffusion conditions. The dimensionless local flux was expressed as a series expansion of the dimensionless local characteristic frequency ξ in the low‐frequency range, and proportional to in the high‐frequency range. The two solutions were shown to overlap fairly well for . The overall impedance was then obtained for a small circular or a rectangular electrode. These theoretical predictions were successfully tested in pipe flow for laminar or turbulent conditions.
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hal-04557827 , version 1 (24-04-2024)



Claude Deslouis, Bernard Tribollet, M. Vorotyntsev. Diffusion‐Convection Impedance at Small Electrodes. Journal of The Electrochemical Society, 1991, 138 (9), pp.2651-2657. ⟨10.1149/1.2086032⟩. ⟨hal-04557827⟩
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