Modeling of the Electrical Properties of Bidirectional Alkaline Air Electrodes

A method for the parameterization of the electrical properties of bidirectional air electrodes in alkaline media is introduced. Through this method a distinctive characterization of bidirectional air electrodes can be performed in their whole potential range of operation. Hereby a quantitative compa...

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Bibliographic Details
Published in:Journal of the Electrochemical Society 2014-01, Vol.161 (6), p.A1019-A1022
Main Authors: Büker, Florian, Müller, Claas, Hanemann, Thomas, Hertkorn, Daniel, Reinecke, Holger
Format: Article
Language:English
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Summary:A method for the parameterization of the electrical properties of bidirectional air electrodes in alkaline media is introduced. Through this method a distinctive characterization of bidirectional air electrodes can be performed in their whole potential range of operation. Hereby a quantitative comparison of different types of air electrodes can be made. The method bases on a large-signal electrical equivalent circuit and in contrast to electrochemical impedance spectroscopy (EIS) the circuit parameterizes the electrical properties of bidirectional air electrodes in their potential range of operation. The electrical elements of the equivalent circuit refer to the essential electrochemical and physical characteristics of the electrode. The methods for the determination of the containing element parameters are explained, linking them to the electrochemical characteristics of air electrodes. In conclusion a comparison between the real electrical behavior of an air electrode and a simulation of the evaluated equivalent circuit is made.
ISSN:0013-4651
1945-7111
DOI:10.1149/2.063406jes