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
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.