000125553 001__ 125553
000125553 005__ 20190316234312.0
000125553 037__ $$aCONF
000125553 245__ $$aModeling of Local Cell Degradation in Solid Oxide Fuel Cells: Cumulative Effect of Critical Operating Points
000125553 269__ $$a2008
000125553 260__ $$bEuropean Fuel Cell Forum$$c2008
000125553 336__ $$aConference Papers
000125553 520__ $$aA CFD model was developed to predict with accuracy the local electrochemical performance in an operating solid oxide fuel cell. A particular focus was given on the study of performance limitations and degradation sources caused by the design of the fuel cell, by the choice of materials and components, or by improper operating points. The model is used to understand typical degradation effects observed on stacks tested in collaboration with HTCeramix - SOFCpower. The model is able to predict several degradation effects caused by the use of compressive seal materials with remaining open porosity. Diffusion across seals is modeled, as well as the resulting parasitic combustion of air and fuel. The risk of local redox-cycling for the anode supported cell is evaluated locally, as well as an eventual local reduction of the cathode layers. The cracking of electrolyte caused by redox cycles is modeled locally, with increasing gas leakage at each cycle, allowing to model the cumulative effect of successive critical operating points. The results are compared with experiments, showing an overall good agreement.
000125553 6531_ $$afuel cell
000125553 6531_ $$aSOFC
000125553 6531_ $$asimulation
000125553 6531_ $$aCFD
000125553 6531_ $$amodeling
000125553 6531_ $$aseal
000125553 6531_ $$acompressive
000125553 6531_ $$aporosity
000125553 6531_ $$acombustion
000125553 6531_ $$aoxidation
000125553 6531_ $$aredox
000125553 6531_ $$aanode
000125553 6531_ $$areduction
000125553 6531_ $$acathode
000125553 6531_ $$adegradation
000125553 6531_ $$afailure
000125553 6531_ $$areliability
000125553 6531_ $$acrack
000125553 6531_ $$aelectrolyte
000125553 700__ $$0240290$$g114073$$aWuillemin, Zacharie
000125553 700__ $$0242222$$g136111$$aFaes, Antonin
000125553 700__ $$0241617$$g101146$$aDiethelm, Stefan
000125553 700__ $$0240153$$g128223$$aNakajo, Arata
000125553 700__ $$0240154$$g151101$$aAutissier, Nordahl
000125553 700__ $$0240166$$g107971$$aVan herle, Jan
000125553 700__ $$0240152$$g105085$$aFavrat, Daniel
000125553 7112_ $$dJune 30 - July 4, 2008 $$cLucerne$$a8th EUROPEAN SOLID OXIDE FUEL CELL FORUM 2008
000125553 720_1 $$aDr. Steinberger-Wilckens, Robert$$eed.
000125553 773__ $$jA0224$$tProceedings of the 8th EUROPEAN SOLID OXIDE FUEL CELL FORUM 2008$$q1-12
000125553 8564_ $$uhttp://www.efcf.com/$$zURL
000125553 8564_ $$uhttps://infoscience.epfl.ch/record/125553/files/A0224.pdf$$zn/a$$s2993591
000125553 909C0 $$xU10315$$0252044$$pLENI
000125553 909CO $$ooai:infoscience.tind.io:125553$$qGLOBAL_SET$$pconf$$pSTI
000125553 937__ $$aLENI-CONF-2008-016
000125553 973__ $$rNON-REVIEWED$$sPUBLISHED$$aEPFL
000125553 980__ $$aCONF