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    Performance and stability of nano-structured Pd and Pd0.95M0.05 (M = Mn, Co, Ce, and Gd) infiltrated Y2O3-ZrO2 oxygen electrodes of solid oxide electrolysis cells

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    Fulltext not available
    Authors
    Ai, Na
    Chen, Kongfa
    Liu, Shaomin
    Jiang, San Ping
    Date
    2013
    Type
    Journal Article
    
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    Citation
    Ai, Na and Chen, Kongfa and Liu, Shaomin and Jiang, San Ping. 2013. Performance and stability of nano-structured Pd and Pd0.95M0.05 (M = Mn, Co, Ce, and Gd) infiltrated Y2O3-ZrO2 oxygen electrodes of solid oxide electrolysis cells. International Journal of Hydrogen Energy. 38 (36): pp. 16569-16578.
    Source Title
    International Journal of Hydrogen Energy
    DOI
    10.1016/j.ijhydene.2013.04.058
    ISSN
    0360-3199
    URI
    http://hdl.handle.net/20.500.11937/47370
    Collection
    • Curtin Research Publications
    Abstract

    Nano-structured Pd infiltrated and Pd0.95M0.05 (M = Mn, Co, Ce, and Gd) co-infiltrated Y2O3-ZrO2 (YSZ) electrodes are studied as the oxygen electrodes of solid oxide electrolysis cells (SOECs). The infiltrated Pd-YSZ electrodes show good electrocatalytic activity for the oxygen evolution reaction. For example, the electrode polarization resistance (RE) for 2.0 mg cm-2 Pd infiltrated YSZ is 0.36 Ω cm-2 at 800 °C. RE is not significantly affected by co-infiltrating Pd with Mn and Co, but is enhanced by co-infiltration of Ce and Gd. The co-infiltration of low concentrations of metals in particular Co, Ce and Gd significantly enhances the microstructure and performance stability of the Pd-YSZ electrodes. The results demonstrate that the addition of dopants to the Pd in the form of either an alloy (Co) or a separate phase (Ce and Gd) is beneficial to enhance the performance and stability of Pd based oxygen electrodes of SOECs.

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