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Article Dans Une Revue Electrochimica Acta Année : 1996

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

Résumé

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.

Domaines

Chimie

Dates et versions

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

Identifiants

Citer

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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