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    Redox behavior of supported Pd particles and its effect on oxygen reduction reaction in intermediate temperature solid oxide fuel cells

    Access Status
    Fulltext not available
    Authors
    Liang, F.
    Chen, J.
    Chi, B.
    Pu, J.
    Jiang, San Ping
    Jian, L.
    Date
    2011
    Type
    Journal Article
    
    Metadata
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    Citation
    Liang, F. and Chen, J. and Chi, B. and Pu, J. and Jiang, S.P. and Jian, L. 2011. Redox behavior of supported Pd particles and its effect on oxygen reduction reaction in intermediate temperature solid oxide fuel cells. Journal of Power Sources. 196 (1): pp. 153-158.
    Source Title
    Journal of Power Sources
    DOI
    10.1016/j.jpowsour.2010.07.011
    ISSN
    0378-7753
    School
    Fuels and Energy Technology Institute
    URI
    http://hdl.handle.net/20.500.11937/56994
    Collection
    • Curtin Research Publications
    Abstract

    Nano-structured Pd-infiltrated YSZ cathodes (Pd + YSZ) are prepared by impregnation method and their electrocatalytic activity and reduction-oxidation behavior are investigated. It is observed that nano-sized PdO particles are uniformly distributed on the surface of the YSZ scaffold and decomposed at a temperature below 800 °C in air. Coexistence of Pd and PdO in the Pd + YSZ cathode is detected at temperatures between 650 and 750 °C. The polarization resistance R E of the Pd + YSZ cathode decreases continuously as oxygen partial pressure increases from 0.001 to 1 atm at 600 and 850 °C, whereas it reaches a minimum in the vicinity of 0.03 atm of oxygen partial pressure at 750 °C. In air with an oxygen partial pressure of 0.21 atm, the Pd + YSZ shows the lowest activation energy for the oxygen reduction reaction in the temperature range of 650 and 750 °C.

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