Transient Mass Transfer at a Coated Rotating Disk Electrode: Diffusion and Electrohydrodynamical Impedances - Sorbonne Université
Journal Articles Journal of The Electrochemical Society Year : 1987

Transient Mass Transfer at a Coated Rotating Disk Electrode: Diffusion and Electrohydrodynamical Impedances

Abstract

The mass‐transfer response of a rotating disk electrode to a sine wave modulation of the angular velocity has been calculated for an interface covered by a porous layer of thickness , through which an ionic species is transported by molecular diffusion with a diffusivity . Electrohydrodynamical (EHD) impedances, defined as the transfer functions between the response of the concentration or concentration gradient at the interface and the modulated velocity, have been expressed as functions of a dimensionless frequency p, representing the ratio of the modulation frequency to the average angular velocity, of the permeability and of the diffusion time constant through the film . The frequency analysis of the impedance data for a coated electrode, therefore, allows one to determine and separately.
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Dates and versions

hal-04633014 , version 1 (03-07-2024)

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Cite

Claude Deslouis, Bernard Tribollet, M. Duprat, F. Moran. Transient Mass Transfer at a Coated Rotating Disk Electrode: Diffusion and Electrohydrodynamical Impedances. Journal of The Electrochemical Society, 1987, 134 (10), pp.2496-2501. ⟨10.1149/1.2100229⟩. ⟨hal-04633014⟩
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