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Self-assembled dynamic perovskite composite cathodes for intermediate temperature solid oxide fuel cells

Author

Listed:
  • J. Felix Shin

    (University of Liverpool)

  • Wen Xu

    (University of Liverpool)

  • Marco Zanella

    (University of Liverpool)

  • Karl Dawson

    (School of Engineering, University of Liverpool)

  • Stanislav N. Savvin

    (University of Liverpool)

  • John B. Claridge

    (University of Liverpool)

  • Matthew J. Rosseinsky

    (University of Liverpool)

Abstract

Electrode materials for intermediate temperature (500–700 ∘C) solid oxide fuel cells require electrical and mechanical stability to maintain performance during the cell lifetime. This has proven difficult to achieve for many candidate cathode materials and their derivatives with good transport and electrocatalytic properties because of reactivity towards cell components, and the fuels and oxidants. Here we present Ba0.5Sr0.5(Co0.7Fe0.3)0.6875W0.3125O3−δ (BSCFW), a self-assembled composite prepared through simple solid state synthesis, consisting of B-site cation ordered double perovskite and disordered single perovskite oxide phases, as a candidate cathode material. These phases interact by dynamic compositional change at the operating temperature, promoting both chemical stability through the increased amount of W in the catalytically active single perovskite provided from the W-reservoir double perovskite, and microstructural stability through reduced sintering of the supported catalytically active phase. This interactive catalyst-support system enabled stable high electrochemical activity through the synergic integration of the distinct properties of the two phases.

Suggested Citation

  • J. Felix Shin & Wen Xu & Marco Zanella & Karl Dawson & Stanislav N. Savvin & John B. Claridge & Matthew J. Rosseinsky, 2017. "Self-assembled dynamic perovskite composite cathodes for intermediate temperature solid oxide fuel cells," Nature Energy, Nature, vol. 2(3), pages 1-7, March.
    • Handle: RePEc:nat:natene:v:2:y:2017:i:3:d:10.1038_nenergy.2016.214
    DOI: 10.1038/nenergy.2016.214
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    Cited by:

    1. Fang, Xiurong & Lin, Zijing, 2018. "Numerical study on the mechanical stress and mechanical failure of planar solid oxide fuel cell," Applied Energy, Elsevier, vol. 229(C), pages 63-68.
    2. Xuemei Li & Wengang Huang & Andraž Krajnc & Yuwei Yang & Atul Shukla & Jaeho Lee & Mehri Ghasemi & Isaac Martens & Bun Chan & Dominique Appadoo & Peng Chen & Xiaoming Wen & Julian A. Steele & Haira G., 2023. "Interfacial alloying between lead halide perovskite crystals and hybrid glasses," Nature Communications, Nature, vol. 14(1), pages 1-12, December.

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