A Method to Separate Process Contributions in Impedance Spectra by Variation of Test Conditions | Zendy

Søren Højgaard Jensen | Zendy; Anne Hauch | Zendy; Peter Vang Hendriksen | Zendy; Mogens Bjerg Mogensen | Zendy; Nikolaos Bonanos | Zendy; Torben Jacobsen | Zendy

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A Method to Separate Process Contributions in Impedance Spectra by Variation of Test Conditions

Author(s) -

Søren Højgaard Jensen,

Anne Hauch,

Peter Vang Hendriksen,

Mogens Bjerg Mogensen,

Nikolaos Bonanos,

Torben Jacobsen

Publication year - 2007

Publication title -

journal of the electrochemical society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.258

H-Index - 271

eISSN - 1945-7111

pISSN - 0013-4651

DOI - 10.1149/1.2790791

Subject(s) - electrical impedance , cathode , anode , dielectric spectroscopy , materials science , analytical chemistry (journal) , electrochemistry , oxide , chemistry , electrode , electrical engineering , engineering , chromatography , metallurgy

Many processes contribute to the overall impedance of an electrochemical cell, and these may be difficult to separate in the impedance spectrum. Here, we present an investigation of a solid oxide fuel cell based on differences in impedance spectra due to a change of operating parameters and present the result as the derivative of the impedance with respect to ln(f). The method is used to separate the anode and cathode contributions and to identify various types of processes.

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