Determination of electrochemical impedance for electrode reaction without time stability

被引：10

作者：

Itagaki, M ^{[1
]}

Taya, A ^{[1
]}

Watanabe, K ^{[1
]}

机构：

[1] Sci Univ Tokyo, Fac Sci & Technol, Dept Ind Chem, Chiba 2788510, Japan

来源：

ELECTROCHEMISTRY | 2000年 / 68卷 / 07期

关键词：

electrochemical impedance; time stability; spline function;

D O I：

10.5796/electrochemistry.68.596

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The method to determine an instantaneous impedance was developed for the impedance without time stability. The Nyquist plot of the impedance without time stability shows the deviation from the semicircle in the low frequency range. In the present method, the impedance was measured four times successively. The measured impedance spectra were plotted on 3-D Nyquist plane, whose axes were real and imaginary components and time. The data was joined by a smooth curve at the same frequency using spline function. The instantaneous impedance can be determined by the cross section of 3-D Nyquist plot. The program of this compensation was described, and this method was applied to the impedance of iron electrode which showed inductive loop.

引用

页码：596 / 601

页数：6