Electrochemical and electrogravimetric behaviors of conducting polymer. Theoretical aspects and application to co-polymer films based on juglone

被引:20
作者
Rubin, A. [1 ,2 ]
Perrot, H. [1 ,2 ]
Gabrielli, C. [1 ,2 ]
Pham, M. C. [3 ]
Piro, B. [3 ]
机构
[1] CNRS, UPR 15, LISE, F-75252 Paris 05, France
[2] Univ Paris 06, F-75252 Paris 05, France
[3] Univ Paris 07, CNRS, ITODYS, UMR 7086, F-75252 Paris 13, France
关键词
Conducting polymer; Ionic transfer; Electrochemical microbalance; Electrochemical impedance; ac-Electrogravimetry; CYCLIC VOLTAMMETRY; REDOX PROCESS; TRANSPORT;
D O I
10.1016/j.electacta.2010.02.013
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
Redox mechanisms of conducting polymers are not yet fully understood. Attractive analytical tools and pertinent models are necessary to achieve this goal. In this paper, numerical simulations based on a theory dealing with ions transfer through electroactive film/electrolyte interface was developed to predict the behavior of a conducting polymer called poly(JUG-co-JUGA). The main advantage of this approach is that it can be applied for any polymer assuming a mixed conducting material and a thin enough film neglecting the transport effect. It is the first time where the same model allows both classical cyclic electrogravimetry (current and mass over a potential scan) and ac-electrogravimetry (electrochemical impedance and mass/potential transfer functions) to be estimated theoretically. Moreover and to our knowledge the electrochemical behavior of poly(JUG-co-JUGA) was examined through these techniques for the first time. It is shown herein that the cation transfer is preponderant but the free solvent motion must be taken into account. This effect is not detected by classical electrochemical measurements but only by combining electrochemical characterization to gravimetric measurements. (C) 2010 Elsevier Ltd. All rights reserved.
引用
收藏
页码:6136 / 6146
页数:11
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