IMPEDANCE CHARACTERISTICS OF POLY-O-AMINOPHENOL ELECTRODES

被引：42

作者：

BARBERO, C

TUCCERI, RI

POSADAS, D

SILBER, JJ

SERENO, L

机构：

[1] NATL UNIV LA PLATA,FAC CIENCIAS EXACTAS,INST INVEST FISICOQUIM TEOR & APLICADAS,RA-1900 LA PLATA,ARGENTINA

[2] UNIV NACL RIO CUARTO,DEPT QUIM & FIS,RA-5800 RIO CUARTO,ARGENTINA

来源：

ELECTROCHIMICA ACTA | 1995年 / 40卷 / 08期

关键词：

IMPEDANCE; POLY-O-AMINOPHENOL; MODIFIED ELECTRODES;

D O I：

10.1016/0013-4686(94)00373-9

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The impedance characteristics of poly-o-aminophenol film electrodes in NaClO4 0.4M + HClO4 0.1M electrolyte have been measured in the frequency range 0.01 < f < 10(3) Hz and at two different thicknesses. The experimental results can be interpreted through a simple charge transfer resistance in parallel with a constant, capacity at high frequencies and the redox capacity in series with the Nm resistance at low frequencies. The analysis of the impedance response allows to the electrochemical rate constant, the concentration of redox centers in the film, the film conductivity and the diffusion coefficient of the elections to be determined.

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页码：1037 / 1040

页数：4

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