期刊
ELECTROCHIMICA ACTA
卷 47, 期 10, 页码 1633-1640出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0013-4686(01)00896-9
关键词
nickel hydroxide electrode; ac impedance spectroscopy; state of charge; alkaline batteries; transmission line modelling
A new ac impedance spectroscopy method is proposed to follow the charge-discharge processes of nickel oxo-hydroxide electrode (NOHE) in KOH media and thereafter to determine their state of charge (SOC), involving in situ measurements of the impedance between two electronic contacts soldered on opposite edges of the electrode. A transmission line (TL) model is developed and fitted to experimental results. The physical significance of its parameters is discussed, taking into account one- and two-phase domains. (C) 2002 Elsevier Science Ltd. All rights reserved.
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