000256200 001__ 256200
000256200 005__ 20240708132814.0
000256200 037__ $$aFZJ-2015-06184
000256200 041__ $$aEnglish
000256200 1001_ $$0P:(DE-Juel1)165688$$aBeez, Alexander$$b0$$eCorresponding author
000256200 1112_ $$a3rd INTERNATIONAL WORKSHOP ON DEGRADATION ISSUES OF FUEL CELLS and ELECTROLYSERS$$cSantorin$$d2015-09-29 - 2015-10-01$$g3rd DegIs$$wGreece
000256200 245__ $$aThermodynamic considerations concerning Chromium poisoning
000256200 260__ $$c2015
000256200 3367_ $$0PUB:(DE-HGF)6$$2PUB:(DE-HGF)$$aConference Presentation$$bconf$$mconf$$s1446465980_27143$$xInvited
000256200 3367_ $$033$$2EndNote$$aConference Paper
000256200 3367_ $$2DataCite$$aOther
000256200 3367_ $$2ORCID$$aLECTURE_SPEECH
000256200 3367_ $$2DRIVER$$aconferenceObject
000256200 3367_ $$2BibTeX$$aINPROCEEDINGS
000256200 520__ $$aOne major degradation mechanism of SOFCs is the poisoning of the perovskite cathodes because of gaseous chromium species released from the metal interconnect and the tubing of the stack. Despite the major effort that has already been done in investigating the reaction mechanisms of chromium with the cathode materials in SOFCs, the connection between the cathode properties and the chromium deposition is still not completely understood.Due to its high electronic and ionic conductivity (La,Sr)(Co,Fe)O3 (LSCF) is one of the most commonly used cathodes for SOFCs in the temperature range of 700 – 800 °C. This material is favorable because of its intrinsically high electronic and ionic conductivity. One major drawback of LSCF is the segregation of SrO on the cathode particle surface. The reaction of SrO and volatile Cr-species in the gas phase lead to an insulating SrCrO4-phase. This layer decreases the electronic conductivity, hinders the gas transport through the porous cathode and blocks catalytic active sites for the oxygen reduction. The main challenge in describing the Cr-degradation of SOFCs is the amount of influencing parameters and how they are linked.As it’s one of the most important parameters, two ways to measure the Cr partial pressure and techniques to trap Cr from the gas phase will be described. Together with thermodynamic calculations, different types of model samples will be introduced as well.
000256200 536__ $$0G:(DE-HGF)POF3-135$$a135 - Fuel Cells (POF3-135)$$cPOF3-135$$fPOF III$$x0
000256200 536__ $$0G:(DE-Juel1)SOFC-20140602$$aSOFC - Solid Oxide Fuel Cell (SOFC-20140602)$$cSOFC-20140602$$fSOFC$$x1
000256200 536__ $$0G:(DE-Juel1)HITEC-20170406$$aHITEC - Helmholtz Interdisciplinary Doctoral Training in Energy and Climate Research (HITEC) (HITEC-20170406)$$cHITEC-20170406$$x2
000256200 909CO $$ooai:juser.fz-juelich.de:256200$$pVDB
000256200 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)165688$$aForschungszentrum Jülich GmbH$$b0$$kFZJ
000256200 9131_ $$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$$x0
000256200 9141_ $$y2015
000256200 920__ $$lyes
000256200 9201_ $$0I:(DE-Juel1)IEK-1-20101013$$kIEK-1$$lWerkstoffsynthese und Herstellungsverfahren$$x0
000256200 980__ $$aconf
000256200 980__ $$aVDB
000256200 980__ $$aI:(DE-Juel1)IEK-1-20101013
000256200 980__ $$aUNRESTRICTED
000256200 981__ $$aI:(DE-Juel1)IMD-2-20101013