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000015844 0247_ $$2DOI$$a10.1016/j.jpowsour.2010.10.033
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000015844 041__ $$aeng
000015844 082__ $$a620
000015844 084__ $$2WoS$$aElectrochemistry
000015844 084__ $$2WoS$$aEnergy & Fuels
000015844 1001_ $$0P:(DE-HGF)0$$aKornely, M.$$b0
000015844 245__ $$aDegradation of anode supported cell (ASC) performance by Cr-poisoning
000015844 260__ $$aNew York, NY [u.a.]$$bElsevier$$c2011
000015844 300__ $$a7203 - 7208
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000015844 440_0 $$03727$$aJournal of Power Sources$$v196$$x0378-7753$$y17
000015844 500__ $$aRecord converted from VDB: 12.11.2012
000015844 520__ $$aPerformance and stability of solid oxide fuel cells (SOFC) have been continuously improved at the single-cell level. Connecting the individual cells by a metallic interconnector (MIC) in a stack, though, yields remarkable losses in performance and leads to an enhanced degradation. These effects are attributed to, inter alia, Cr evaporation from the MIC and, thus, Cr poisoning of the cathode.To determine the degradation rate caused by Cr poisoning, this paper focuses on the differences in single cell performance and short-term stability by using either an inert flowfielcl or a flowfield made of a chromia-forming alloy. To provide a homogeneous current collection and gas distribution over the complete cathode area and to avoid a direct contact between MIC made of Crofer22APU and LSM, a platinum mesh was used as current collector. The cell performance was evaluated by analyzing its current-voltage characteristics and using electrochemical impedance spectroscopy.A detailed analysis of impedance spectra by the distribution of relaxation times (DRT) and a subsequent Complex Nonlinear Least Squares (CLNS) fit facilitated the separation of anodic and cathodic polarization processes. In the presence of a chromia-forming alloy the polarization resistance of the cathode showed a significantly higher initial value (+64 m Omega.cm(2)) than without and a high degradation rate of 213 mu Omega.cm(2) h(-1) during 280 h of galvanostatic operation at 800 degrees C. (C) 2010 Elsevier B.V. All rights reserved.
000015844 536__ $$0G:(DE-Juel1)FUEK402$$2G:(DE-HGF)$$aRationelle Energieumwandlung$$cP12$$x0
000015844 536__ $$0G:(DE-Juel1)SOFC-20140602$$aSOFC - Solid Oxide Fuel Cell (SOFC-20140602)$$cSOFC-20140602$$fSOFC$$x1
000015844 588__ $$aDataset connected to Web of Science
000015844 65320 $$2Author$$aSOFC
000015844 65320 $$2Author$$aLSM
000015844 65320 $$2Author$$aCr-poisoning
000015844 65320 $$2Author$$aDegradation
000015844 65320 $$2Author$$aMetallic interconnector (MIC)
000015844 65320 $$2Author$$aDistribution of relaxation times (DRT)
000015844 650_7 $$2WoSType$$aJ
000015844 7001_ $$0P:(DE-Juel1)VDB98457$$aNeumann, A.$$b1$$uFZJ
000015844 7001_ $$0P:(DE-Juel1)129636$$aMenzler, N.H.$$b2$$uFZJ
000015844 7001_ $$0P:(DE-HGF)0$$aLeonide, A.$$b3
000015844 7001_ $$0P:(DE-HGF)0$$aWeber, A.$$b4
000015844 7001_ $$0P:(DE-HGF)0$$aIvers-Tiffée, E.$$b5
000015844 773__ $$0PERI:(DE-600)1491915-1$$a10.1016/j.jpowsour.2010.10.033$$gVol. 196, p. 7203 - 7208$$p7203 - 7208$$q196<7203 - 7208$$tJournal of power sources$$v196$$x0378-7753$$y2011
000015844 8567_ $$uhttp://dx.doi.org/10.1016/j.jpowsour.2010.10.033
000015844 8564_ $$uhttps://juser.fz-juelich.de/record/15844/files/FZJ-15844_PV.pdf$$yRestricted$$zPublished final document.
000015844 909CO $$ooai:juser.fz-juelich.de:15844$$pVDB
000015844 915__ $$0StatID:(DE-HGF)0010$$aJCR/ISI refereed
000015844 9141_ $$y2011
000015844 9131_ $$0G:(DE-Juel1)FUEK402$$bEnergie$$kP12$$lRationelle Energieumwandlung$$vRationelle Energieumwandlung$$x0
000015844 9132_ $$0G:(DE-HGF)POF3-135$$1G:(DE-HGF)POF3-130$$2G:(DE-HGF)POF3-100$$aDE-HGF$$bForschungsbereich Energie$$lSpeicher und vernetzte Infrastrukturen$$vFuel Cells$$x0
000015844 9201_ $$0I:(DE-Juel1)IEK-1-20101013$$gIEK$$kIEK-1$$lWerkstoffsynthese und Herstellverfahren$$x0
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