Effect of sintering aids on the electrical properties of Ce 0.9Nd 0.1O 2-δ

Yanjie Xia, Yijia Bai, Xiaojie Wu, Defeng Zhou, Zhongchang Wang, Xiaojuan Liu, Jian Meng

    研究成果: Article査読

    10 被引用数 (Scopus)

    抄録

    The effect of small addition of different sintering aids (MoO 3 and WO 3) on the electrical properties of Ce 0.9Nd 0.1O 2-δ has been investigated. The (Ce 0.9Nd 0.1) 1-xM xO 2-δ (x = 0.0; M = Mo, W, x = 0.01; Ce 0.9Nd 0.1O 2-δ: NDC, (Ce 0.9Nd 0.1) 0.99Mo 0.01O 2-δ: NDCMo; (Ce 0.9Nd 0.1) 0.99W 0.01O 2-δ: NDCW) solid solutions were prepared and characterized. The X-ray diffraction patterns indicate that all the samples are single phases with a cubic fluorite structure. Moreover, from the field-emission scanning electron microscopy results, it is found (Ce 0.9Nd 0.1) 0.99M 0.01O 2-δ (M = Mo, W) sintered at 1300 °C for 15 h have better sinterability than Ce 0.9Nd 0.1O 2-δ. The total conductivity ( σt) by electrochemical impedance spectroscopy are ranked as: NDCW (σt-NDCW700°C=0.039Scm -1) > NDCMo (σt-NDCMo700°C=0.029Scm -1) > NDC (σt-NDC700°C= 0.018Scm -1) measured at 700 °C, which is attributed to microstructures. It can be concluded that MoO 3 and WO 3 are both effective and WO 3 seems to be more potential as sintering aids on the optimization of electrical properties for ceria-based electrolytes.

    本文言語English
    ページ(範囲)805-808
    ページ数4
    ジャーナルSolid State Sciences
    14
    7
    DOI
    出版ステータスPublished - 2012 7

    ASJC Scopus subject areas

    • 化学 (全般)
    • 材料科学(全般)
    • 凝縮系物理学

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