Electrochemical properties of PANI films for different counter-ions in acidic pH analysed by impedance techniques - Sorbonne Université Access content directly
Journal Articles Electrochimica Acta Year : 1996

Electrochemical properties of PANI films for different counter-ions in acidic pH analysed by impedance techniques

Abstract

The bulk and interfacial transport properties of PANI free-standing membranes have been studied in acidic media with different counter-ions using the ac impedance technique with the fourelectrode cell. The experimental data were compared to a theoretical expression recently proposed, based on Nernst-Planck equation for mass transport and on slow discharge for ionic interfacial transfer. The ionic charge transfer resistance was found negligible for all counter-ions in acidic pH. For each system, the polaronic diffusivity was in general between one and two orders of magnitude higher than the ionic one. A classification from the fastest to the slowest ionic species was established following the order: chloride, sulphate, nitrate, phosphate and perchlorate.

Dates and versions

hal-04414002 , version 1 (24-01-2024)

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Cite

A. Benyaich, Claude Deslouis, Tourya El Moustafid, Marco M. Musiani, Bernard Tribollet. Electrochemical properties of PANI films for different counter-ions in acidic pH analysed by impedance techniques. Electrochimica Acta, 1996, 41 (11-12), pp.1781-1785. ⟨10.1016/0013-4686(95)00495-5⟩. ⟨hal-04414002⟩
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