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    High performance nanostructured bismuth oxide-cobaltite as a durable oxygen electrode for reversible solid oxide cells

    67118.pdf (2.910Mb)
    Access Status
    Open access
    Authors
    Ai, N.
    Chen, M.
    He, S.
    Chen, K.
    Zhang, T.
    Jiang, San Ping
    Date
    2018
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Ai, N. and Chen, M. and He, S. and Chen, K. and Zhang, T. and Jiang, S.P. 2018. High performance nanostructured bismuth oxide-cobaltite as a durable oxygen electrode for reversible solid oxide cells. Journal of Materials Chemistry A. 6 (15): pp. 6510-6520.
    Source Title
    Journal of Materials Chemistry A
    DOI
    10.1039/c8ta00370j
    Additional URLs
    http://creativecommons.org/licenses/by/4.0/
    ISSN
    2050-7488
    School
    Fuels and Energy Technology Institute
    Funding and Sponsorship
    http://purl.org/au-research/grants/arc/DP150102025
    http://purl.org/au-research/grants/arc/DP150102044
    http://purl.org/au-research/grants/arc/DP180100568
    http://purl.org/au-research/grants/arc/DP180100731
    URI
    http://hdl.handle.net/20.500.11937/66936
    Collection
    • Curtin Research Publications
    Abstract

    The high reactivity between bismuth oxide and cobaltite oxygen electrodes is a bottleneck in developing active and reliable bismuth oxide–cobaltite composite oxygen electrodes for solid oxide cells (SOCs). Herein, a Sr-free Sm0.95Co0.95Pd0.05O3−δ (SmCPd) oxygen electrode decorated with nanoscale Er0.4Bi1.6O3 (ESB) is synthesized and assembled on a barrier-layer-free Y2O3–ZrO2 (YSZ) electrolyte film. The cell with the ESB decorated SmCPd composite oxygen electrode exhibits a peak power density of 1.81 W cm−2 at 750 °C and 0.58 W cm−2 at 650 °C. More importantly, excellent operating stability is achieved in the fuel cell mode at 600 °C for 500 h, and in electrolysis and reversible modes at 750 °C for over 200 h. The results demonstrate the feasibility of applying bismuth oxide–cobaltite composite oxygen electrodes in developing high-performance and durable SOCs.

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    • In Situ Formation of Er0.4Bi1.6O3 Protective Layer at Cobaltite Cathode/Y2O3–ZrO2 Electrolyte Interface under Solid Oxide Fuel Cell Operation Conditions
      He, Shuai; Zhang, Qi; Maurizio, Giulio; Catellani, Lorenzo; Chen, K.; Chang, Q.; Santarelli, M.; Jiang, San Ping (2018)
      © Copyright 2018 American Chemical Society. Bismuth-based oxides exhibit outstanding oxygen ionic conductivity and fast oxygen surface kinetics and have shown great potential as a highly active component for electrode ...
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      Bismuth based oxides have excellent ionic conductivity and fast oxygen surface kinetics and show promising potential as highly active electrode materials in solid oxide cells (SOCs) such as solid oxide fuel cells (SOFCs) ...
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