000838283 001__ 838283 000838283 005__ 20240711101459.0 000838283 0247_ $$2doi$$a10.1149/2.0761809jes 000838283 0247_ $$2ISSN$$a0013-4651 000838283 0247_ $$2ISSN$$a0096-4743 000838283 0247_ $$2ISSN$$a0096-4786 000838283 0247_ $$2ISSN$$a1945-7111 000838283 0247_ $$2Handle$$a2128/19149 000838283 0247_ $$2WOS$$aWOS:000440924800124 000838283 037__ $$aFZJ-2017-06926 000838283 082__ $$a540 000838283 1001_ $$0P:(DE-Juel1)168551$$aKennouche, David$$b0 000838283 245__ $$aAnalysis of the Cathode Electrical Contact in SOFC Stacks 000838283 260__ $$aPennington, NJ$$bElectrochemical Soc.$$c2018 000838283 3367_ $$2DRIVER$$aarticle 000838283 3367_ $$2DataCite$$aOutput Types/Journal article 000838283 3367_ $$0PUB:(DE-HGF)16$$2PUB:(DE-HGF)$$aJournal Article$$bjournal$$mjournal$$s1530101871_24033 000838283 3367_ $$2BibTeX$$aARTICLE 000838283 3367_ $$2ORCID$$aJOURNAL_ARTICLE 000838283 3367_ $$00$$2EndNote$$aJournal Article 000838283 520__ $$aThe cathode contact layer is a critical component in solid oxide fuel cell stacks and one possible cause of degradation. Even though this layer and its interfaces are responsible for a large proportion of the ohmic resistance, it is generally difficult to identify the degradation without carrying out an autopsy of the stack. As a non-destructive method, electrochemical impedance spectroscopy is used in this work to investigate in-depth the cathode contact and its evolution with the support of distribution of relaxation time and differences in impedance spectra analyses between 650°C and 800°C. By purposefully building a stack with a reduced cathode contact area, the electrochemical resistance of the contact is evaluated and its frequency response identified. Through measurements at various operating conditions the different peaks of the distribution of relaxation time analysis are identified and related to physical phenomena within the cell. These findings are then applied to a stack with a standard contact area in order to explain the degradation behavior observed upon dismounting from the test bench. 000838283 536__ $$0G:(DE-HGF)POF3-135$$a135 - Fuel Cells (POF3-135)$$cPOF3-135$$fPOF III$$x0 000838283 536__ $$0G:(DE-Juel1)SOFC-20140602$$aSOFC - Solid Oxide Fuel Cell (SOFC-20140602)$$cSOFC-20140602$$fSOFC$$x1 000838283 588__ $$aDataset connected to CrossRef 000838283 7001_ $$0P:(DE-Juel1)145945$$aFang, Qingping$$b1 000838283 7001_ $$0P:(DE-Juel1)129828$$aBlum, Ludger$$b2$$eCorresponding author 000838283 7001_ $$0P:(DE-Juel1)129928$$aStolten, Detlef$$b3 000838283 773__ $$0PERI:(DE-600)2002179-3$$a10.1149/2.0761809jes$$gVol. 165, no. 9, p. F677 - F683$$n9$$pF677 - F683$$tJournal of the Electrochemical Society$$v165$$x0013-4651$$y2018 000838283 8564_ $$uhttps://juser.fz-juelich.de/record/838283/files/J.%20Electrochem.%20Soc.-2018-Kennouche-F677-83.pdf$$yOpenAccess 000838283 8564_ $$uhttps://juser.fz-juelich.de/record/838283/files/J.%20Electrochem.%20Soc.-2018-Kennouche-F677-83.gif?subformat=icon$$xicon$$yOpenAccess 000838283 8564_ $$uhttps://juser.fz-juelich.de/record/838283/files/J.%20Electrochem.%20Soc.-2018-Kennouche-F677-83.jpg?subformat=icon-1440$$xicon-1440$$yOpenAccess 000838283 8564_ $$uhttps://juser.fz-juelich.de/record/838283/files/J.%20Electrochem.%20Soc.-2018-Kennouche-F677-83.jpg?subformat=icon-180$$xicon-180$$yOpenAccess 000838283 8564_ $$uhttps://juser.fz-juelich.de/record/838283/files/J.%20Electrochem.%20Soc.-2018-Kennouche-F677-83.jpg?subformat=icon-640$$xicon-640$$yOpenAccess 000838283 8564_ $$uhttps://juser.fz-juelich.de/record/838283/files/J.%20Electrochem.%20Soc.-2018-Kennouche-F677-83.pdf?subformat=pdfa$$xpdfa$$yOpenAccess 000838283 909CO $$ooai:juser.fz-juelich.de:838283$$pdnbdelivery$$pdriver$$pVDB$$popen_access$$popenaire 000838283 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)168551$$aForschungszentrum Jülich$$b0$$kFZJ 000838283 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)145945$$aForschungszentrum Jülich$$b1$$kFZJ 000838283 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)129828$$aForschungszentrum Jülich$$b2$$kFZJ 000838283 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)129928$$aForschungszentrum Jülich$$b3$$kFZJ 000838283 9131_ $$0G:(DE-HGF)POF3-135$$1G:(DE-HGF)POF3-130$$2G:(DE-HGF)POF3-100$$3G:(DE-HGF)POF3$$4G:(DE-HGF)POF$$aDE-HGF$$bEnergie$$lSpeicher und vernetzte Infrastrukturen$$vFuel Cells$$x0 000838283 9141_ $$y2018 000838283 915__ $$0StatID:(DE-HGF)0200$$2StatID$$aDBCoverage$$bSCOPUS 000838283 915__ $$0StatID:(DE-HGF)1160$$2StatID$$aDBCoverage$$bCurrent Contents - Engineering, Computing and Technology 000838283 915__ $$0LIC:(DE-HGF)CCBYNCND4$$2HGFVOC$$aCreative Commons Attribution-NonCommercial-NoDerivs CC BY-NC-ND 4.0 000838283 915__ $$0StatID:(DE-HGF)0100$$2StatID$$aJCR$$bJ ELECTROCHEM SOC : 2015 000838283 915__ $$0StatID:(DE-HGF)0150$$2StatID$$aDBCoverage$$bWeb of Science Core Collection 000838283 915__ $$0StatID:(DE-HGF)0110$$2StatID$$aWoS$$bScience Citation Index 000838283 915__ $$0StatID:(DE-HGF)0111$$2StatID$$aWoS$$bScience Citation Index Expanded 000838283 915__ $$0StatID:(DE-HGF)9900$$2StatID$$aIF < 5 000838283 915__ $$0StatID:(DE-HGF)0510$$2StatID$$aOpenAccess 000838283 915__ $$0StatID:(DE-HGF)1150$$2StatID$$aDBCoverage$$bCurrent Contents - Physical, Chemical and Earth Sciences 000838283 915__ $$0StatID:(DE-HGF)0300$$2StatID$$aDBCoverage$$bMedline 000838283 915__ $$0StatID:(DE-HGF)0199$$2StatID$$aDBCoverage$$bThomson Reuters Master Journal List 000838283 920__ $$lyes 000838283 9201_ $$0I:(DE-Juel1)IEK-3-20101013$$kIEK-3$$lElektrochemische Verfahrenstechnik$$x0 000838283 9801_ $$aFullTexts 000838283 980__ $$ajournal 000838283 980__ $$aVDB 000838283 980__ $$aUNRESTRICTED 000838283 980__ $$aI:(DE-Juel1)IEK-3-20101013 000838283 981__ $$aI:(DE-Juel1)ICE-2-20101013