Relationship between spatial and spectral properties of ionic solutions: The distributed impedance of an electrolytic cell

被引：4
|
作者：
Sardenberg, R. [1 ]
Figueiredo, J. M. A. [1 ]
机构：
[1] Univ Fed Minas Gerais, Dept Fis, BR-30123970 Belo Horizonte, MG, Brazil
来源：
ELECTROCHIMICA ACTA | 2010年 / 55卷 / 16期
关键词：
Impedance spectroscopy; Warburg; Electrolytic cell; Ionic transport; Cell impedance; ELECTRODES; CHARGE;
D O I：
10.1016/j.electacta.2010.03.044
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Systematic experiments were performed on an electrolytic cell using different ionic species and covering a large range of concentration values. Experimental data indicate that cell impedance is well described by a series combination of discrete circuit elements different from that originally proposed by Randles. A first-principle model describing diffusion and migration of the ionic species excited by an applied electric field was able to describe our data. This model relates the spectral decomposition of the measured impedance to spatially distributed sample properties, and opens the possibility of getting information concerning sample structure using this experimental technique. (C) 2010 Elsevier Ltd. All rights reserved.
引用
收藏
页码：4722 / 4727
页数：6
相关论文
共 50 条
12345