IMPEDANCE INVESTIGATION OF THE CHARGE TRANSPORT IN FILM-MODIFIED ELECTRODES

被引：107

作者：

GABRIELLI, C ^{[1
]}

TAKENOUTI, H ^{[1
]}

HAAS, O ^{[1
]}

TSUKADA, A ^{[1
]}

机构：

[1] PAUL SCHERRER INST, CH-5232 VILLIGEN, SWITZERLAND

来源：

JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 1991年 / 302卷 / 1-2期

关键词：

D O I：

10.1016/0022-0728(91)85032-K

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Two kinetic models which can explain the coupling between electrochemical charge transfer and the charge transport in polymer films of film-modified electrodes are analyzed. The first one is based on a diffusion-like process due to the mutual electron exchange between adjacent redox centers. The second one assumes a finite conductivity of the film. The electrochemical impedances characteristic of the models have been derived and also simulated numerically. Some experimental impedance measurements which were obtained from a glassy-carbon electrode modified with a redox-polymer film are reported and discussed in terms of these two models. The influence of film inhomogeneities on the impedance characteristics is also discussed.

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页码：59 / 89

页数：31

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