Comments on the ideal polarisability of electrodes displaying cpe-type capacitance dispersion

被引：21

作者：

Láng, G

Heusler, KE ^{[1
]}

机构：

[1] Tech Univ Clausthal, D-3392 Clausthal Zellerfeld, Germany

[2] Eotvos Lorand Univ, Dept Phys Chem, Budapest, Hungary

来源：

JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 2000年 / 481卷 / 02期

基金：

匈牙利科学研究基金会;

关键词：

electrochemical impedance; solid electrodes; double layer capacitance; ideal polarisability; capacitance dispersion; constant phase element;

D O I：

10.1016/S0022-0728(99)00481-7

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The electrode capacitance of solid electrodes usually exhibits a frequency dispersion described by a constant phase element. According to Zoltowski, an electrode with cpe behaviour can never be an ideally polarizable electrode. This opinion was criticized by Lang and Heusler. Accepting that the cpe frequency dispersion of a solid electrode cannot hold in the limit of zero frequency, cpe behaviour is compatible with ideal polarizability. The definition of the ideally polarizable electrode is compatible with displacement currents following a change of state, even if these currents are connected with adsorption in the interphase. The time to establish adsorption equilibrium at solid electrodes is very long due to slow processes in the solid.

引用

页码：227 / 229

页数：3