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Computation of ac responses of arbitrary electrode geometries from the corresponding secondary current distributions: A method based on analytic continuation
被引：8
|作者：
Emmanuel, Bosco
[1
]
机构：
[1] Cent Electrochem Res Inst, Modeling & Simulat Grp, Karaikkudi, Tamil Nadu, India
[2] Amer Chem Soc, Washington, DC 20036 USA
关键词：
AC impedance;
current distribution;
analytic continuation;
hull cells;
fractal electrodes;
constant phase elements;
D O I：
10.1016/j.jelechem.2007.03.015
中图分类号：
O65 [分析化学];
学科分类号：
070302 ;
081704 ;
摘要：
A method of analytic continuation is advanced for computing ac responses of electrochemical systems with arbitrary electrode geometries and proposed as an exact alternative to the approximate and intuitive transmission line models (TLMs). Using a complex extension of the boundary element method, the small signal ac responses were computed for several Hull cell geometries, the rectangular pore, the saw-tooth and a fractal geometry. A comparison with the results of the TLMs for the rectangular pore and the saw-tooth reveal quantitative as well as qualitative differences. Besides providing a bench-mark for such approximate theories, the present method may well be the only option for system geometries not amenable to a TLM. An alternative approach to the study of the constant phase element based on analytic continuation is also sketched. (c) 2007 Elsevier B.V. All rights reserved.
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页码：89 / 97
页数：9
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