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    Pd-YSZ composite cathodes for oxygen reduction reaction of intermediate-temperature solid oxide fuel cells

    Access Status
    Fulltext not available
    Authors
    Liang, F.
    Zhou, W.
    Chi, B.
    Pu, J.
    Jiang, San Ping
    Jian, L.
    Date
    2011
    Type
    Journal Article
    
    Metadata
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    Citation
    Liang, F. and Zhou, W. and Chi, B. and Pu, J. and Jiang, S.P. and Jian, L. 2011. Pd-YSZ composite cathodes for oxygen reduction reaction of intermediate-temperature solid oxide fuel cells. International Journal of Hydrogen Energy. 36: pp. 7670-7676.
    Source Title
    International Journal of Hydrogen Energy
    ISSN
    03603199
    School
    Department of Chemical Engineering
    URI
    http://hdl.handle.net/20.500.11937/33145
    Collection
    • Curtin Research Publications
    Abstract

    mechanicalmixing and infiltration methods. In the case of infiltration, thermal decomposition and chemical reduction processes are used to form Pd particles on the YSZ scaffold. The phase structure, morphology and electrochemical performance of the Pd-YSZ composite cathodes are characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM) and electrochemical impedance spectroscopy (EIS). The performance of mechanically mixed Pd-YSZ composite cathodes is inadequate due to significant growth and sporadical distribution of Pd particles. The 5 wt.% Pd-loaded cathode prepared by infiltration-thermal decomposition process shows the lowest polarization resistance, i.e. between 0.042 U cm2 and 1.5 U cm2 in the temperature range of 850e600 C, benefited from the formation of nano-sized Pd particles and the presence of well connected Pd network. The effect of Pd loading on the performance of the infiltratedthermal decomposed Pd-YSZ composite cathodes is also evaluated, 5 wt.% Pd loading results in the lowest polarization resistances.

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