001028752 001__ 1028752
001028752 005__ 20240717202036.0
001028752 037__ $$aFZJ-2024-04800
001028752 1001_ $$0P:(DE-HGF)0$$aPinto, R.$$b0
001028752 1112_ $$a16th European SOFC & SOE Forum$$cLucerne$$d2024-07-02 - 2024-07-05$$wSwitzerland
001028752 245__ $$aHomogenization of fuel cell interconnects to determine the contacting configuration in a stack
001028752 260__ $$c2024
001028752 300__ $$aA1516, 1-7
001028752 3367_ $$2ORCID$$aCONFERENCE_PAPER
001028752 3367_ $$033$$2EndNote$$aConference Paper
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001028752 3367_ $$0PUB:(DE-HGF)8$$2PUB:(DE-HGF)$$aContribution to a conference proceedings$$bcontrib$$mcontrib$$s1721205928_1235
001028752 520__ $$aLarge scale production of solid oxide fuel cells (SOFCs) is the next step for ensuring cleanenergy conversion. During manufacturing of SOFC stacks, metallic interconnects play avital role in electrical contacting which highly influences the overall stack performance.Therefore, the force applied to a fuel cell stack to establish electrical contact is verycrucial. Different parameters or boundary conditions may cause non-uniform forcedistribution and large plastic deformation in some regions of the active area resulting inlocal damage or hotpots during operation. The phenomena of contact pressure distributionmay be studied more intuitively using Finite Element Methods (FEM). However, due togeometrically complex design of interconnects, simulations on a stack level arecomputationally expensive. Computational homogenization may be used to simplify stacklevel simulations and is also pursued in this work. The focus of this paper is to create afinite element framework using the homogenization approach to understand the effects ofmechanical pressing of the stacking on individual interconnect contacts. This approachwould help reduce the model complexity for stack level FEM simulations and achievefaster computation times. Such a simulation could, in turn give an understanding of themechanical contact pressure distribution in a stack. This, combined with phenomenon likethermal expansion and creep could calculate a theoretical electrical resistance duringoperation. Within the scope of this short paper, the homogenization framework formechanical loading of an interconnect is discussed and a simplified model is created. Theforce-deformation behavior of the model was compared and validated with itscorresponding full-field simulation. This modelling approach may be used to optimizeparameters like stacking force, materials, design of individual contacts, etc. for idealcontact pressures at individual contacts.
001028752 536__ $$0G:(DE-HGF)POF4-1231$$a1231 - Electrochemistry for Hydrogen (POF4-123)$$cPOF4-123$$fPOF IV$$x0
001028752 536__ $$0G:(DE-Juel1)SOFC-20140602$$aSOFC - Solid Oxide Fuel Cell (SOFC-20140602)$$cSOFC-20140602$$fSOFC$$x1
001028752 7001_ $$0P:(DE-HGF)0$$aWelschinger, F.$$b1
001028752 7001_ $$0P:(DE-HGF)0$$aGiesselmann, N.$$b2
001028752 7001_ $$0P:(DE-HGF)0$$aReinshagen, H.$$b3
001028752 7001_ $$0P:(DE-Juel1)129636$$aMenzler, Norbert H.$$b4
001028752 909CO $$ooai:juser.fz-juelich.de:1028752$$pVDB
001028752 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)129636$$aForschungszentrum Jülich$$b4$$kFZJ
001028752 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$$x0
001028752 9141_ $$y2024
001028752 920__ $$lyes
001028752 9201_ $$0I:(DE-Juel1)IMD-2-20101013$$kIMD-2$$lWerkstoffsynthese und Herstellungsverfahren$$x0
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001028752 980__ $$aI:(DE-Juel1)IMD-2-20101013
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