Application of the impedance model of de Levie for the characterization of porous electrodes

By O. Barcia, E. D’Elia, I. Frateur, O. Mattos, N. Pébère, B. Tribollet. 2002

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From the de Levie's theory for a porous electrode, the impedance can be expressed in function of the cylindrical pore characteristics: the pore length, the pore radius and the number of pores. If the pores have a finite length, these parameters can be regressed from the experimental impedance diagrams. In the case of a semi-infinite pore length, only the product r3/2n can be obtained. In this paper, two practical examples of porous electrodes were presented: the corrosion of cast iron in drinking water and the electrodissolution of copper in 1 M hydrochloric acid solution. In each case, the pore parameters were assessed.

Subfields: Civil and Structural Engineering, Electrochemistry, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/1c65d98f03107a24e4989e1e0592502f4e99fec8