FARADAIC CHARGE-TRANSFER WITH DOUBLE-LAYER CHARGING AND OR ADSORPTION-RELATED CHARGING AT POLYMER-MODIFIED ELECTRODES AS OBSERVED BY COLOR IMPEDANCE SPECTROSCOPY

被引：43

作者：

AMEMIYA, T ^{[1
]}

HASHIMOTO, K ^{[1
]}

FUJISHIMA, A ^{[1
]}

机构：

[1] UNIV TOKYO, FAC ENGN, DEPT SYNTHET CHEM, BUNKYO KU, TOKYO 113, JAPAN

来源：

JOURNAL OF PHYSICAL CHEMISTRY | 1993年 / 97卷 / 38期

关键词：

D O I：

10.1021/j100140a033

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The interfacial processes at polymer-modified electrodes are investigated using electrochemical impedance and color impedance (electromodulated optical transmittance) spectroscopies. Direct in situ evidence for faradaic charge transfer with double-layer charging is obtained for polypyrrole/polystyrenesulfonate (PPy/PSS-) composite films in 1 M aqueous LiCl, NaCl, KCl, CsCl, and Me4NCl. On the other hand, the high-frequency charging is found to be coupled with adsorption-related (faradaic) charging for the film in 1 M aqueous Bu4NCl. These results are modeled with an equivalent circuit taking into account both the double-layer and adsorption-related capacitances at the film/solution interface.

引用

页码：9736 / 9740

页数：5

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