An electrochemical impedance spectroscopy method applied to porous LiMn2O4 and metal hydride battery electrodes
2003 (English)In: Journal of the Electrochemical Society, ISSN 0013-4651, Vol. 150, no 2, A234-A241 p.Article in journal (Refereed) Published
An electrochemical impedance spectroscopy method utilizing the signals from reference electrodes positioned in front of and behind a porous electrode is investigated. The basis for the method is illustrated theoretically, and limiting values under different assumptions are presented. The method was applied to a porous metal hydride and a LiMn2O4 battery electrode. It was concluded that the method facilitates the separation of local impedance effects from the effects of the potential distribution in the porous electrode. Consequently, a more accurate determination of local kinetic parameters and the effective conductivity in the pore electrolyte could be obtained.
Place, publisher, year, edition, pages
2003. Vol. 150, no 2, A234-A241 p.
IdentifiersURN: urn:nbn:se:kth:diva-22193DOI: 10.1149/1.1538225ISI: 000180517000014OAI: oai:DiVA.org:kth-22193DiVA: diva2:340891
QC 201005252010-08-102010-08-10Bibliographically approved