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Application of In-Situ Diagnostic Methods for the Study of SOFC Operational Behaviour

Schiller, Günter and Bessler , Wolfgang and Willich, Caroline and Friedrich, K. Andreas (2010) Application of In-Situ Diagnostic Methods for the Study of SOFC Operational Behaviour. 9th European Solid Oxide Fuel Cell Forum, 29. Juni - 2. Juli 2010, Luzern, Schweiz.

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In order to optimise the operational behaviour of fuel cells and minimise cell degradation it is very helpful to use in-situ and ex-situ analytical methods. The application of advanced diagnostic methods by monitoring cell characteristics under real operating conditions provides valuable information to be used for the development of degradation mitigation strategies. The application of these methods in SOFC development is significantly limited mainly due to the experimental problems that are associated with the high operating temperature. However, an increasing effort in developing and implementing non-traditional analytical methods such as spatially resolved measurements and imaging techniques for SOFC development has been made in recent years. The presentation gives an overview of in-situ diagnostic methods that are applied at DLR Stuttgart for the study of SOFCs. It includes spatially resolved measurements with an experimental segmented cell configuration where different techniques such as IV characteristics, impedance spectroscopy, gas chromatography and temperature measurement are involved. The investigation by means of segmented cells aims at the determination of local effects and the identification of critical operating conditions during technically relevant SOFC operation. Recently, a new test setup with transparent optical access has been built up allowing for microscopic observation of processes within the cell as well as for application of in-situ laser Raman spectroscopy to determine highly resolved concentrations of gas species along a flow channel. Examples of analytical studies by applying these diagnostic methods are presented and potentials and limitations of the different techniques are discussed.

Item URL in elib:https://elib.dlr.de/64621/
Document Type:Conference or Workshop Item (Speech, Paper)
Title:Application of In-Situ Diagnostic Methods for the Study of SOFC Operational Behaviour
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Friedrich, K. AndreasDLR-TTUNSPECIFIED
Date:2 July 2010
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Keywords:In-situ Analytik, SOFC, ortsaufgelöste Messungen, Raman-Spektroskopie, optische Mokroskopie, Degradation
Event Title:9th European Solid Oxide Fuel Cell Forum
Event Location:Luzern, Schweiz
Event Type:international Conference
Event Dates:29. Juni - 2. Juli 2010
Organizer:Dr. Ulf Bossel
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: Schiller, Dr.rer.nat. Günter
Deposited On:21 Jul 2010 08:48
Last Modified:31 Jul 2019 19:28

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