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Ionics

, Volume 9, Issue 5–6, pp 370–374 | Cite as

On the use of multichannel data acquisition of impedance spectra

  • J. C. C. Abrantes
  • D. Pérez-Coll
  • P. Núñez
  • J. R. Frade
Article

Abstract

Impedance spectroscopy is a powerful technique for electrical and electrochemical characterisation of ionic conductors and other electroceramics. Thus, one might tempted to use multichannel data acquisition to allow the utilisation of expensive LCR meters for simultaneous measurements. This work shows results for YSZ and strontium titanate ceramics, obtained with a multi-channel data acquisition system, to demonstrate the limitations of this approach and the applicability of some corrections. Impedance spectra are affected under multi-channel conditions, mainly in the high frequency contributions, and this is approximately described by a stray capacitance. The bulk contribution of the spectra is most affected. Contributions of internal interfaces (e.g. grain boundaries) are relatively well characterised, mainly after the proposed corrections. The characterisation of electrode processes is not affected.

Keywords

Strontium Ionic Conductor Impedance Spectroscopy Data Acquisition System Impedance Spectrum 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© IfI - Institute for Ionics 2003

Authors and Affiliations

  • J. C. C. Abrantes
    • 1
  • D. Pérez-Coll
    • 2
  • P. Núñez
    • 2
  • J. R. Frade
    • 3
  1. 1.ESTG, Instituto Politécnico de Viana do CasteloViana do CasteloPortugal
  2. 2.Dep. Química InorgánicaUniversidad de La LagunaLa Laguna, TenerifeSpain
  3. 3.Ceramics and Glass Engineering Dep. (CICECO)University of AveiroAveiroPortugal

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