A method to separate process contributions in impedance spectra by variation of test conditions

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Abstract

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.
Original languageEnglish
JournalJournal of The Electrochemical Society
Volume154
Issue number12
Pages (from-to)B1325-B1330
ISSN0013-4651
DOIs
Publication statusPublished - 2007

Bibliographical note

Copyright The Electrochemical Society, Inc. [2007]. All rights reserved. Except as provided under U.S. copyright law, this work may not be reproduced, resold, distributed, or modified without the express permission of The Electrochemical Society (ECS).

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