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Analysis of the Local Dependency vs. Time in a Fuel Cell Stack after Process Parameter Transients by Means of Multi-Channel Synchronous Impedance Measurements

Schiller, C.A. and Wagner, N. (2010) Analysis of the Local Dependency vs. Time in a Fuel Cell Stack after Process Parameter Transients by Means of Multi-Channel Synchronous Impedance Measurements. 61th Annual Meeting of ISE, 26. Sept.-1. Okt. 2010, Nice, Frankreich.

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Abstract

Impedance spectra were successfully acquired synchronously in parallel on all cells of a 5-cell short SOFC stack. The SOFC response speed on humidity changes was fast compared with the timescale of Impedance Spectroscopy. Relevant kinetic findings through EIS, in particular effective gas diffusion lengths require well controlled process parameters including a definite fuel gas humidity. Relevant findings about membrane, inter-connector and contact resistance losses through EIS require a careful electrical set-up, in particular avoiding mutual induction.

Item URL in elib:https://elib.dlr.de/66112/
Document Type:Conference or Workshop Item (Speech)
Title:Analysis of the Local Dependency vs. Time in a Fuel Cell Stack after Process Parameter Transients by Means of Multi-Channel Synchronous Impedance Measurements
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Schiller, C.A.cas (at) zahner.deUNSPECIFIED
Wagner, N.TTUNSPECIFIED
Date:27 September 2010
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:SOFC Stack, Impedanzspektroskopie, Parallelmessungen
Event Title:61th Annual Meeting of ISE
Event Location:Nice, Frankreich
Event Type:international Conference
Event Dates:26. Sept.-1. Okt. 2010
Organizer:ISE
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 - Elektrochemische Prozesse (old)
Location: Stuttgart
Institutes and Institutions:Institute of Engineering Thermodynamics > Electrochemical Energy Technology
Deposited By: Wagner, Dr.rer.nat. Norbert
Deposited On:17 Nov 2010 10:24
Last Modified:17 Nov 2010 10:37

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