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    An A-site-deficient perovskite offers high activity and stability for low-temperature solid-oxide fuel cells

    Access Status
    Fulltext not available
    Authors
    Zhu, Y.
    Chen, Z.
    Zhou, W.
    Jiang, S.
    Zou, J.
    Shao, Zongping
    Date
    2013
    Type
    Journal Article
    
    Metadata
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    Citation
    Zhu, Y. and Chen, Z. and Zhou, W. and Jiang, S. and Zou, J. and Shao, Z. 2013. An A-site-deficient perovskite offers high activity and stability for low-temperature solid-oxide fuel cells. ChemSusChem. 6 (12): pp. 2249-2254.
    Source Title
    ChemSusChem
    DOI
    10.1002/cssc.201300694
    ISSN
    1864-5631
    School
    Department of Chemical Engineering
    URI
    http://hdl.handle.net/20.500.11937/2752
    Collection
    • Curtin Research Publications
    Abstract

    Solid oxide fuel cells (SOFCs) directly convert fossil and/or renewable fuels into electricity and/or high-quality heat in an environmentally friendly way. However, high operating temperatures result in high cost and material issues, which have limited the commercialization of SOFCs. To lower their operating temperatures, highly active and stable cathodes are required to maintain a reasonable power output. Here, we report a layer-structured A-site deficient perovskite Sr0.95Nb0.1Co0.9O3−δ (SNC0.95) prepared by solid-state reactions that shows not only high activity towards the oxygen reduction reaction (ORR) at operating temperatures below 600 °C, but also offers excellent structural stability and compatibility, and improved CO2 resistivity. An anode-supported fuel cell with SNC0.95 cathode delivers a peak power density as high as 1016 mW cm−2 with an electrode-area-specific resistance of 0.052 Ω cm2 at 500 °C.

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