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    Oriented PrBaCo2O5+δ thin films for solid oxide fuel cells

    Access Status
    Fulltext not available
    Authors
    Gao, Y.
    Chen, D.
    Chen, C.
    Shao, Zongping
    Ciucci, F.
    Date
    2015
    Type
    Journal Article
    
    Metadata
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    Citation
    Gao, Y. and Chen, D. and Chen, C. and Shao, Z. and Ciucci, F. 2015. Oriented PrBaCo2O5+δ thin films for solid oxide fuel cells. Journal of Power Sources. 278: pp. 623-629.
    Source Title
    Journal of Power Sources
    DOI
    10.1016/j.jpowsour.2014.12.110
    ISSN
    0378-7753
    School
    Department of Chemical Engineering
    URI
    http://hdl.handle.net/20.500.11937/42366
    Collection
    • Curtin Research Publications
    Abstract

    Oriented PrBaCo2O5+δ (PBC) thin films are prepared on yttria-stabilized ZrO2 (YSZ) substrates with orientations (001), (110) and (111) via pulsed laser deposition (PLD). Electrochemical impedance spectroscopy (EIS) experiments at various temperatures and oxygen partial pressures reveal a good oxygen reduction reaction (ORR) performance of all the thin films. However, the films' performance has considerable variance. PBC thin film deposited on (111) oriented YSZ had the best performance, followed by (110) and (001). Experiments including high resolution X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), atomic force microscopy (AFM), and computation, namely molecular dynamics (MD), are used to elucidate the substrate-determined orientations, examine the morphology and composition of the thin films, and to explain the variance of the ORR performance. Our results support the anisotropy of the oxygen vacancy pathway in the a–b plane and indicate that the substrate orientations can have great influence on the thin films properties.

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