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Interpretation of processes at positive and negative electrode by measurement and simulation of impedance spectra. Part II: Concentration limitation

Authors :
Dirk Uwe Sauer
Heide Budde-Meiwes
Julia Kowal
Source :
Journal of Power Sources. 207:45-50
Publication Year :
2012
Publisher :
Elsevier BV, 2012.

Abstract

Impedance measurements of both electrodes of a flooded OEM SLI battery at various SOC and with various direct currents have been measured. For each part of the impedance spectra, an electrochemical process is proposed and implemented in a simulation model. By simulation of impedance spectroscopy, spectra of the model are obtained and compared with the measurement. In the first part, the focus was put on inductive semicircles, while in this second part, concentration limitation and its appearance in impedance spectra is investigated.

Details

ISSN :
03787753
Volume :
207
Database :
OpenAIRE
Journal :
Journal of Power Sources
Accession number :
edsair.doi...........5e42fb09c672d9f7c0388d746682208a
Full Text :
https://doi.org/10.1016/j.jpowsour.2011.12.014