Advantages of odd random phase multisine Electrochemical Impedance Measurements

Yves Van Ingelgem, Els Tourwe, Orlin Blajiev, Rik Pintelon, Annick Hubin

Research output: Contribution to journalArticle

60 Citations (Scopus)

Abstract

Electrochemical impedance spectroscopy (EIS) is a powerful technique to study electrochemical processes and to perform screening tasks. Recently an integrated measuring and modeling methodology for EIS based on a multisine excitation signal was developed. A key issue in this methodology is the data analysis, allowing us to rapidly quantify the reliability of the measured data. In this paper, a comparison is made between classical single-sine and the proposed multisine measurements on the same system. The fitting of the impedance data obtained by single-or multisine excitation and using different weighting factors is also discussed. In addition to the advantages reported in earlier work, it is concluded that, of all investigated frequencies, the odd random phase multisine excitation yields the highest quality data in the shortest measurement time.
Original languageEnglish
Pages (from-to)6730-6739
Number of pages10
JournalElectroanalysis
Volume21
Publication statusPublished - 2009

Keywords

  • Multisine impedance spectroscopy
  • sensoring
  • corrosion
  • measurement time
  • noise analysis
  • non-linearities

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