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Insulating and Sealing of SOFC Devices by Plasma Sprayed Ceramic Layers

Arnold, Johannes and Ansar, Syed Asif and Maier, Uwe and Henne, Rudolf (2008) Insulating and Sealing of SOFC Devices by Plasma Sprayed Ceramic Layers. In: Conference proceedings-CD, pp. 95-99. ITSC 2008, 2008-06-02 - 2008-06-04, Maastricht, Netherlands. ISBN 978-3-87155-979-2

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Abstract

Solid oxide fuel cells (SOFCs) are one of the options as auxiliary power units (APU) in transportation, e.g. in vehi-cles or in aircraft. In particular, metal supported SOFCs consisting of metallic frames and substrates coated with plasma sprayed functional layers have shown an excellent stability concerning redox cycling. In order to provide sufficient power, these single cells have to be assembled to stacks. To prevent short-circuiting the frame of each cell has to be electrically insulated from the neighbouring one. For that purpose a ceramic coating is applied on each metal frame by thermal spraying before it is brazed to other stack components. Such layers should at one hand show good wetting and adhesion to the silver based brazing materials. On the other hand it should maintain sufficient electrical resistance even at the fuel cell operating temperature. As the applied solder, which connects the cells and seals the gas manifold simultaneously, is an excellent electrical conductor, it is mandatory to prevent the brazing material from penetrating into the deposit. In this paper a description of the design and experiences with these plasma sprayed insulating layers is given.

Item URL in elib:https://elib.dlr.de/53683/
Document Type:Conference or Workshop Item (Speech)
Title:Insulating and Sealing of SOFC Devices by Plasma Sprayed Ceramic Layers
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Arnold, JohannesUNSPECIFIEDUNSPECIFIED
Ansar, Syed AsifUNSPECIFIEDUNSPECIFIED
Maier, UweElringKlinger AG DettingenUNSPECIFIED
Henne, RudolfElringKlinger AG DettingenUNSPECIFIED
Date:June 2008
Journal or Publication Title:Conference proceedings-CD
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Page Range:pp. 95-99
ISBN:978-3-87155-979-2
Status:Published
Keywords:Solid oxide fuel cells, SOFC, metal supported SOFC, cermic coating, brazing materials, electrical resistance, plasma sprayed insulating layers
Event Title:ITSC 2008
Event Location:Maastricht, Netherlands
Event Type:international Conference
Event Dates:2008-06-02 - 2008-06-04
Organizer:DVS, ASM Int. - TSS, IIW
HGF - Research field:Energy
HGF - Program:Efficient Energy Conversion (old)
HGF - Program Themes:E EV - Energy process technology (old)
DLR - Research area:Energy
DLR - Program:E EV - Energy process technology
DLR - Research theme (Project):E - Elektrochemische Prozesse (old)
Location: Stuttgart
Institutes and Institutions:Institute of Engineering Thermodynamics > Electrochemical Energy Technology
Deposited By: Arnold, Dr.-Ing. Johannes
Deposited On:09 Jul 2008
Last Modified:14 Jan 2010 23:19

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