On the validation and applicability of multiphysics models for hydrogen SOFC

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dc.contributor.authorDiaz, Brayn
dc.contributor.authorCelentano, Diego
dc.contributor.authorMolina, Paulo
dc.contributor.authorSancy, Mamie
dc.contributor.authorTroncoso, Loreto
dc.contributor.authorWalczak, Magdalena
dc.date.accessioned2025-01-20T16:17:00Z
dc.date.available2025-01-20T16:17:00Z
dc.date.issued2024
dc.description.abstractSolid oxide fuel cells (SOFC) are a viable alternative for environmentally-friendly conversion of hydrogen into energy and multiphysics simulation can be used to diminish the experimental effort to improve their efficiency. However, an appropriate model of the involved processes and their parameters must be chosen. This paper studies the effects of choice between Maxwell-Stefan and Fick's law models, and uncertainty of electrode ionic conductivity sigma(ion) ion and anodic reference exchange current density i(0,ref,f), on cell performance as implemented in the COMSOL Multiphysics (R) software. In the case of Maxwell-Stefan, peak average power output increased by 21.9% as sigma(ion) varies from 10(-3) to 10(-1) S/cm, while the model based on Fick's law shows an increase of 55.2%. The Maxwell-Stefan model exhibits an increase in peak power of 6% as i(0,ref,f) ranges from 0.4 to 0.8 A/cm(2), and the Fick's law model an increase of 8.2%. The dependence of the Maxwell-Stefan model on sigma(ion) is characterized as logarithmic in the studied range. The Maxwell-Stefan model is deemed preferable because its lower sensitivity to the studied parameters helps mitigate uncertainty. It is concluded that despite its limitations, multiphysics modeling is a useful tool for directing research on SOFC materials owing to its descriptive potential.
dc.fuente.origenWOS
dc.identifier.doi10.1016/j.jpowsour.2024.234493
dc.identifier.eissn1873-2755
dc.identifier.issn0378-7753
dc.identifier.urihttps://doi.org/10.1016/j.jpowsour.2024.234493
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/90575
dc.identifier.wosidWOS:001235368200001
dc.language.isoen
dc.revistaJournal of power sources
dc.rightsacceso restringido
dc.subjectSOFC
dc.subjectHydrogen fuel
dc.subjectNumerical simulation
dc.subjectCOMSOL multiphysics (R)
dc.subjectSensitivity analysis
dc.subject.ods07 Affordable and Clean Energy
dc.subject.odspa07 Energía asequible y no contaminante
dc.titleOn the validation and applicability of multiphysics models for hydrogen SOFC
dc.typeartículo
dc.volumen607
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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