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Journal Articles Electrochimica Acta Year : 1996

Mixed ionic-electronic conduction of a conducting polymer film. Ac impedance study of polypyrrole

Abstract

Polypyrrole (PPy) films were studied by ac impedance spectroscopy both in a free-standing membrane and in a modified electrode arrangement. The experimental results were analyzed by comparison with previously derived kinetic models, allowing to obtain, through a non-linear least-squares fitting procedure, both transport (diffusion coefficients and concentration of ion- and electron-exchanging sites) and interfacial parameters (charge transfer resistances and double layer capacitances). PPy film thickness, nature and concentration of the electrolytes and duration of the immersion were varied in a systematic way. The transport properties were found to depend on both anions and cations contained in the electrolyte and to be independent of polymer film thickness.

Dates and versions

hal-04413977 , version 1 (24-01-2024)

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Claude Deslouis, Tourya El Moustafid, Marco M. Musiani, Bernard Tribollet. Mixed ionic-electronic conduction of a conducting polymer film. Ac impedance study of polypyrrole. Electrochimica Acta, 1996, 41 (7-8), pp.1343-1349. ⟨10.1016/0013-4686(95)00455-6⟩. ⟨hal-04413977⟩
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