The Impedance of an Electrode Coated by a Resistive Film with a Graded Thickness - Sorbonne Université
Article Dans Une Revue Electrochemical and Solid-State Letters Année : 2008

The Impedance of an Electrode Coated by a Resistive Film with a Graded Thickness

Résumé

The impedance of a rectangular electrode coated by a resistive film, the local thickness of which varies along the electrode length, is calculated considering a local capacity of each surface element inversely proportional to local film thickness and different cases for film resistance. Experimental model systems are obtained by anodizing niobium or tantalum rectangular sheets. The impedance of the coated electrode, in agreement with the calculations, shows a minimum in the plot of the ohmic resistance corrected phase angle vs frequency and cannot be accurately modeled by a constant phase element.

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Domaines

Chimie

Dates et versions

hal-04136177 , version 1 (21-06-2023)

Identifiants

Citer

Sandro Cattarin, Nicola Comisso, Marco Musiani, Bernard Tribollet. The Impedance of an Electrode Coated by a Resistive Film with a Graded Thickness. Electrochemical and Solid-State Letters, 2008, 11 (6), pp.C27-C30. ⟨10.1149/1.2901163⟩. ⟨hal-04136177⟩
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