The ac impedance studies for porous MnO2 cathode by means of modified transmission line model

被引：39
|
作者：
Qu, DY [1 ]
机构：
[1] Rayovac Corp, Madison, WI 53711 USA
来源：
JOURNAL OF POWER SOURCES | 2001年 / 102卷 / 1-2期
关键词：
manganese dioxide cathode; alkaline battery; impedance; transmission line model; porous electrode;
D O I：
10.1016/S0378-7753(01)00810-2
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
A simplified 5-RC transmission line equivalent circuit was introduced. Manganese dioxide cathodes from three commercial, primary alkaline cells were investigated by means of ac impedance technique. Cathode Ohmic resistance, Faraday resistance for the reduction of MnO2, proton diffusion rate inside the lattice of EMD and electrochemical accessible surface area were obtained by numerical fitting of impedance data using the simplified transmission line model. The kinetics for cathode surface accessibility was also studied. (C) 2001 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：270 / 276
页数：7
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