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    Catalytic CeO2 washcoat over microchanneled supporting cathodes of solid oxide electrolysis cells for efficient and stable CO2 reduction

    Access Status
    Fulltext not available
    Authors
    Wang, J.
    Wang, T.
    Yu, L.
    Wei, T.
    Hu, X.
    Ye, Z.
    Wang, Z.
    Buckley, Craig
    Yao, J.
    Marnellos, G.
    Dong, Dehua
    Date
    2019
    Type
    Journal Article
    
    Metadata
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    Citation
    Wang, J. and Wang, T. and Yu, L. and Wei, T. and Hu, X. and Ye, Z. and Wang, Z. et al. 2019. Catalytic CeO2 washcoat over microchanneled supporting cathodes of solid oxide electrolysis cells for efficient and stable CO2 reduction. Journal of Power Sources. 412: pp. 344-349.
    Source Title
    Journal of Power Sources
    DOI
    10.1016/j.jpowsour.2018.11.050
    ISSN
    0378-7753
    School
    School of Electrical Engineering, Computing and Mathematical Science (EECMS)
    URI
    http://hdl.handle.net/20.500.11937/74303
    Collection
    • Curtin Research Publications
    Abstract

    Infiltration is an effective way to improve porous electrode performance of solid oxide cells while the preparation procedure and catalyst stability still remain challenging. The microchannel structure of cathodes enables the implementation of catalysts into conventional Ni-based cathode supports of solid oxide electrolysis cells via the infiltration process to accelerate CO2 electrolysis. Infiltrating a CeO2 colloid precursor to prepare catalytic washcoat has been demonstrated as a more efficient catalyst preparation and resulted in a more stable CO2 electrolysis performance, compared with infiltrating conventional nitrate precursors. The catalytic CeO2 washcoat possesses a uniform particle size distribution and strong adhesion to the cathode scaffold surface. The optimization of the infiltration process results in a remarkable stability of CO2 electrolysis performance during cell operation for 334 h owing to the stable catalyst microstructure.

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