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    Multiscale model for solid oxide fuel cell with electrode containing mixed conducting material

    Access Status
    Fulltext not available
    Authors
    Chen, D.
    Wang, H.
    Zhang, S.
    Tade, Moses
    Shao, Zongping
    Chen, H.
    Date
    2015
    Type
    Journal Article
    
    Metadata
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    Citation
    Chen, D. and Wang, H. and Zhang, S. and Tade, M. and Shao, Z. and Chen, H. 2015. Multiscale model for solid oxide fuel cell with electrode containing mixed conducting material. AIChE Journal. 61 (11): pp. 3786-3803.
    Source Title
    AIChE Journal
    DOI
    10.1002/aic.14881
    ISSN
    0001-1541
    Faculty
    Faculty of Science and Engineering
    URI
    http://hdl.handle.net/20.500.11937/8441
    Collection
    • Curtin Research Publications
    Abstract

    Solid oxide fuel cells (SOFCs) with electrodes that contain mixed conducting materials usually show very different relationships among microstructure parameters, effective electrode characteristics, and detailed working processes from conventional ones. A new multiscale model for SOFCs using mixed conducting materials, such as LSCF or BSCF, was developed. It consisted of a generalized percolation micromodel to obtain the electrode properties from microstructure parameters and a multiphysics single cell model to relate these properties to performance details. Various constraint relationships between the activation overpotential expressions and electric boundaries for SOFC models were collected by analyzing the local electrochemical equilibrium. Finally, taking a typical LSCF-SDC/SDC/Ni-SDC intermediate temperature SOFC as an example, the application of the multiscale model was illustrated. The accuracy of the models was verified by fitting 25 experimental I-V curves reported in literature with a few adjustable parameters; additionally, and several conclusions were drawn from the analysis of simulation results.

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