001024679 001__ 1024679
001024679 005__ 20250203103142.0
001024679 0247_ $$2doi$$a10.1149/MA2023-0154169mtgabs
001024679 0247_ $$2ISSN$$a1091-8213
001024679 0247_ $$2ISSN$$a2151-2043
001024679 037__ $$aFZJ-2024-02352
001024679 082__ $$a540
001024679 1001_ $$0P:(DE-Juel1)188481$$aWinterhalder, Franziska Elisabeth$$b0$$eCorresponding author
001024679 1112_ $$aSOFC: Eighteenth International Symposium on Solid Oxide Fuel Cells (SOFC-XVIII)$$cBoston$$d2023-05-28 - 2023-06-02$$wUSA
001024679 245__ $$aPerovskite-Based Materials As Alternative Fuel Electrodes for Solid Oxide Electrolysis Cells (SOECs)
001024679 260__ $$c2023
001024679 3367_ $$0PUB:(DE-HGF)1$$2PUB:(DE-HGF)$$aAbstract$$babstract$$mabstract$$s1712665788_18040
001024679 3367_ $$033$$2EndNote$$aConference Paper
001024679 3367_ $$2BibTeX$$aINPROCEEDINGS
001024679 3367_ $$2DRIVER$$aconferenceObject
001024679 3367_ $$2DataCite$$aOutput Types/Conference Abstract
001024679 3367_ $$2ORCID$$aOTHER
001024679 520__ $$aAbstractEnhancing the lifetime of SOECs is a challenge to overcome regarding their commercialization. A major impact on the lifetime of a cell during electrolysis operation, particularly under thermoneutral potential and high current densities, is the degradation of the currently used electrode materials, mainly the Ni-based fuel electrode. Among other things, nickel migration, as well as agglomeration, is leading to a significant performance loss after a certain operating time. Hence, preventing degradation mechanisms of the fuel electrode during operation is a necessity to be tackled for using it commercially. Therefore the development of alternative materials which combine sufficient performance with the lowest possible degradation rate is needed. Perovskite-based materials have been investigated in the last years as all-ceramic possible substitutes.In this work, four perovskites (i.e., strontium-iron-niobate double perovskite (SFN), a strontium-iron-titanate material (STF), a lanthanum-strontium-titanate (LST) and a lanthanum-strontium-iron-manganese (LSFM)) were examined as alternative electrode materials. The aim is to substitute the active fuel electrode, at the moment commonly consisting of Ni cermets, with a perovskite-based electrode while at the same time using state-of-the-art materials for the remaining cell components.The first task here was to look at the chemical stability between the new electrode material and the electrolyte under the standard conditions used to manufacture fuel electrode-supported SOECs.Therefore, the compatibility between these perovskites with a yttria-stabilized-zirconia (8YSZ) electrolyte and how nickel inside the fuel electrode affected the chemical stability during sintering in air at 1400 °C for 5 h was investigated. At this point, SFN double perovskite shows the lowest interaction between the electrode and electrolyte after thermal treatment.A thorough evaluation of all preliminary tests (including compatibility, stability in reducing atmospheres and redox stability tests) indicates that SFN shows so far the best results of the four materials in terms of application as fuel electrode material, followed directly by STF.Thus SFN and STF were chosen to be evaluated in single cell tests. The tests of pure SFN and STF electrodes are carried out with electrolyte-supported single cells exhibiting an LSCF air electrode and symmetrical cells, respectively. CV-characteristics and impedance spectra are measured at varied operating conditions. Impedance spectra are evaluated by the distribution of relaxation times (DRT). These examinations are carried out to give an insight into the electrochemical properties of pure perovskite-based fuel electrodes in order to obtain a base for further optimization.
001024679 536__ $$0G:(DE-HGF)POF4-1231$$a1231 - Electrochemistry for Hydrogen (POF4-123)$$cPOF4-123$$fPOF IV$$x0
001024679 536__ $$0G:(DE-Juel1)SOFC-20140602$$aSOFC - Solid Oxide Fuel Cell (SOFC-20140602)$$cSOFC-20140602$$fSOFC$$x1
001024679 588__ $$aDataset connected to CrossRef, Journals: juser.fz-juelich.de
001024679 7001_ $$0P:(DE-HGF)0$$aAlizad Farzin, Yousef$$b1
001024679 7001_ $$0P:(DE-Juel1)162228$$aGuillon, Olivier$$b2$$ufzj
001024679 7001_ $$0P:(DE-HGF)0$$aWeber, Andre$$b3
001024679 7001_ $$0P:(DE-Juel1)129636$$aMenzler, Norbert H.$$b4$$ufzj
001024679 773__ $$0PERI:(DE-600)2438749-6$$a10.1149/MA2023-0154169mtgabs$$gVol. MA2023-01, no. 54, p. 169 - 169$$x2151-2043$$y2023
001024679 909CO $$ooai:juser.fz-juelich.de:1024679$$pVDB
001024679 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)188481$$aForschungszentrum Jülich$$b0$$kFZJ
001024679 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)162228$$aForschungszentrum Jülich$$b2$$kFZJ
001024679 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)129636$$aForschungszentrum Jülich$$b4$$kFZJ
001024679 9131_ $$0G:(DE-HGF)POF4-123$$1G:(DE-HGF)POF4-120$$2G:(DE-HGF)POF4-100$$3G:(DE-HGF)POF4$$4G:(DE-HGF)POF$$9G:(DE-HGF)POF4-1231$$aDE-HGF$$bForschungsbereich Energie$$lMaterialien und Technologien für die Energiewende (MTET)$$vChemische Energieträger$$x0
001024679 9141_ $$y2024
001024679 920__ $$lyes
001024679 9201_ $$0I:(DE-Juel1)IEK-1-20101013$$kIEK-1$$lWerkstoffsynthese und Herstellungsverfahren$$x0
001024679 9201_ $$0I:(DE-82)080011_20140620$$kJARA-ENERGY$$lJARA-ENERGY$$x1
001024679 980__ $$aabstract
001024679 980__ $$aVDB
001024679 980__ $$aI:(DE-Juel1)IEK-1-20101013
001024679 980__ $$aI:(DE-82)080011_20140620
001024679 980__ $$aUNRESTRICTED
001024679 981__ $$aI:(DE-Juel1)IMD-2-20101013