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Using equivalent circuit models in understanding the performance change of metal supported SOFCs in static and dynamic conditions

Ilhan, Zeynep and Ansar, Asif and Wagner, Norbert (2008) Using equivalent circuit models in understanding the performance change of metal supported SOFCs in static and dynamic conditions. In: 8th European SOFC Forum. 8th European SOFC Forum, 2008-06-30 - 2008-07-04, Lucerne, Switzerland.

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Abstract

The current paper attempts to use equivalent circuit diagrams to simulate impedance spectra of metal supported SOFCs. Measured electrical impedance spectroscopy data on full cells was fitted to an equivalent circuit with the aim to evaluate the contribution of each functional layer towards the ASR of the cell separately. Further, the suitability of equivalent circuit diagrams to predict changes in cell behavior due to alteration in electrodes was investigated. For that purpose, two approaches were opted. First one consisted of replacing LSM cathode with LSCF cathode whereas the second comprised of redox cycling of cells provoking degradation in anodes and overall performance of the cells. Not only was the break down of the losses underlined, but also the limiting factors in the performance of metal supported cells were studied.

Item URL in elib:https://elib.dlr.de/56750/
Document Type:Conference or Workshop Item (Speech, Poster)
Title:Using equivalent circuit models in understanding the performance change of metal supported SOFCs in static and dynamic conditions
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Ilhan, ZeynepUNSPECIFIEDUNSPECIFIED
Ansar, AsifUNSPECIFIEDUNSPECIFIED
Wagner, NorbertUNSPECIFIEDUNSPECIFIED
Date:June 2008
Journal or Publication Title:8th European SOFC Forum
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Editors:
EditorsEmail
Bossel, UlfUNSPECIFIED
Status:Published
Keywords:SOFC, Electrochemical Impedance spectroscopy, LSM, LSCF, Equivalent circuit
Event Title:8th European SOFC Forum
Event Location:Lucerne, Switzerland
Event Type:international Conference
Event Dates:2008-06-30 - 2008-07-04
HGF - Research field:Energy
HGF - Program:Efficient Energy Conversion (old)
HGF - Program Themes:E BZ - Fuel cells (old)
DLR - Research area:Energy
DLR - Program:E BZ - Fuel cells
DLR - Research theme (Project):E - Hochtemperatur-Brennstoffzellen (old)
Location: Stuttgart
Institutes and Institutions:Institute of Engineering Thermodynamics > Electrochemical Energy Technology
Deposited By: Ilhan, Zeynep
Deposited On:17 Dec 2008
Last Modified:12 Dec 2013 20:34

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