Influence of cell configuration on measuring interfacial impedances between a solid electrolyte and an electrode

Citation
T. Kato et al., Influence of cell configuration on measuring interfacial impedances between a solid electrolyte and an electrode, SOL ST ION, 132(3-4), 2000, pp. 287-295
Citations number
6
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
SOLID STATE IONICS
ISSN journal
01672738 → ACNP
Volume
132
Issue
3-4
Year of publication
2000
Pages
287 - 295
Database
ISI
SICI code
0167-2738(200007)132:3-4<287:IOCCOM>2.0.ZU;2-Y
Abstract
For AC impedance spectroscopy to measure interfacial impedances between an electrolyte and a working electrode in solid electrolyte cells with three e lectrodes, the experimental error that is caused by the cell configuration is analyzed using a numerical model. To simulate AC impedance spectra, pote ntial and current distributions in the disk type cells are calculated for v arious frequencies, and the impedance between the reference electrode and t he working electrode is estimated. From the calculation, it is clarified th at the difference in the size between the working electrode and the counter electrode can cause the experimental error and the deformation of the impe dance spectra from a simple semicircle. The influences of the material prop erties and the cell configuration on the error and the deformation of the i mpedance spectrum are discussed. (C) 2000 Elsevier Science B.V. All rights reserved.