Electrochemical characterization of polyaniline-molybdenum trisulfide electrode in non-aqueous media

被引：15

作者：

Fusalba, F ^{[1
]}

Bélanger, D ^{[1
]}

机构：

[1] Univ Quebec, Dept Chim, Montreal, PQ H3C 3P8, Canada

来源：

ELECTROCHIMICA ACTA | 2000年 / 45卷 / 22-23期

基金：

加拿大自然科学与工程研究理事会;

关键词：

polyaniline; conducting polymers; molybdenum trisulfide; electrochemical quartz crystal microbalance; composite;

D O I：

10.1016/S0013-4686(00)00454-0

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Polyaniline (PANI)-molybdenum trisulfide (MoS3) electrode, prepared by a multi-step procedure, and polyaniline electrode were characterized in non-aqueous electrolyte (0.5 M LiClO4/acetonitrile) by cyclic voltammetry, electrochemical impedance spectroscopy and the electrochemical quartz crystal microbalance (EQCM). The voltammetric charge decreased slightly (20%) upon incorporation of MoS3 in the PANI film electrode. The normalized low frequency capacitance defined as the low frequency capacitance/voltammetric charge ratio is identical for both PANI and PANI-MoS3 electrodes suggesting that MoS3 does not contribute to the capacitance measured. The EQCM data is consistent with mixed transport of anions and cations. Upon oxidation in 0.5 M LiClO4/acetonitrile, a mass change of 43 g/mol is observed for PANI-MoS3 and this suggests that solvent is also involved in addition to ClO4- ingress and Li+ expulsion. (C) 2000 Elsevier Science Ltd. All rights reserved.

引用

页码：3877 / 3883

页数：7

共 33 条

[1] CONSEQUENCES OF THERMODYNAMIC RESTRAINTS ON SOLVENT AND ION TRANSFER DURING REDOX SWITCHING OF ELECTROACTIVE POLYMERS [J].