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    A single-/double-perovskite composite with an overwhelming single-perovskite phase for the oxygen reduction reaction at intermediate temperatures

    Access Status
    Fulltext not available
    Authors
    Chen, Y.
    Shen, J.
    Yang, G.
    Zhou, W.
    Shao, Zongping
    Date
    2017
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Chen, Y. and Shen, J. and Yang, G. and Zhou, W. and Shao, Z. 2017. A single-/double-perovskite composite with an overwhelming single-perovskite phase for the oxygen reduction reaction at intermediate temperatures. Journal of Materials Chemistry A. 5 (47): pp. 24842-24849.
    Source Title
    Journal of Materials Chemistry A
    DOI
    10.1039/c7ta07760b
    ISSN
    2050-7488
    School
    WASM: Minerals, Energy and Chemical Engineering (WASM-MECE)
    URI
    http://hdl.handle.net/20.500.11937/60195
    Collection
    • Curtin Research Publications
    Abstract

    The cathode is a key part in solid oxide fuel cells (SOFCs) that largely determines the cell power output and lifetime, and consequently the competitiveness of this attractive technology. Thus, the catalysts for cathodes with high electro-catalytic activity and good stability for the oxygen reduction reaction (ORR) at the intermediate temperature range are vital. Herein, a single-perovskite (SP)/double-perovskite (DP) composite with the nominal composition of SrCo 0.7 Fe 0.2 W 0.1 O 3-d is designed. During the synthesis, a slightly W-doped SP and a W-rich B-site cation ordered DP with the dominant SP phase of approximately 80 wt% are formed simultaneously. This new composite shows obviously enhanced stability owing to the W doping effect in the SP phase and increased activity from the synergistic effect between the SP and DP phases compared to the W-free SrCo 0.8 Fe 0.2 O 3-d perovskite. We anticipate that the synthesis of this perovskite-type composite could pave the way to discover more perovskite-based composite catalysts for SOFCs.

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