Determination of the Diffusion Coefficient from Impedance Data in the Low Frequency Range - Sorbonne Université
Journal Articles Journal of The Electrochemical Society Year : 1988

Determination of the Diffusion Coefficient from Impedance Data in the Low Frequency Range

Abstract

A new method is given for determining the diffusion coefficient or the Schmidt number of an electroactive species. The variation of the real part, relative to the imaginary part, of the electrochemical impedance, or of the electrohydrodynamic (EHD) impedance, at a rotating disk yields the diffusion coefficient without any assumption about the kinetics or any specific values for the electrode area or the solution concentration. This method may be used for all ordinary Schmidt number values (greater than 100).
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Dates and versions

hal-04625916 , version 1 (26-06-2024)

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Bernard Tribollet, John Newman, William Smyrl. Determination of the Diffusion Coefficient from Impedance Data in the Low Frequency Range. Journal of The Electrochemical Society, 1988, 135 (1), pp.134-138. ⟨10.1149/1.2095539⟩. ⟨hal-04625916⟩
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