Synthesis, Characterization and Electrical Properties of (Ce &lt;sub&gt;0.9&lt;/sub&gt;Nd&lt;sub&gt;0.1&lt;/sub&gt;)&lt;sub&gt;1-&lt;em&gt;x&lt;/em&gt;&lt;/sub&gt;Mo&lt;sub&gt;&lt;em&gt;x&lt;/em&gt;&lt;/sub&gt;O&lt;sub&gt;2-&lt;em&gt;δ&lt;/em&gt;&lt;/sub&gt;(0.00≤&lt;em&gt;x&lt;/em&gt;≤0.10)

Xia Yan-Jie,长春工业大学化学与生命科学学院, 长春 130012|中国科学院长春应用化学研究所, 稀土化学与物理国家重点实验室, 长春 130022 ,Meng Jian,Zhou De-Feng

doi:10.3866/pku.whxb20090716

Synthesis, Characterization and Electrical Properties of (Ce 0.9Nd0.1)1-xMoxO2-δ(0.00≤x≤0.10)

Xia Yan-Jie, 长春工业大学化学与生命科学学院, 长春 130012|中国科学院长春应用化学研究所, 稀土化学与物理国家重点实验室, 长春 130022 + Show 2 more

https://doi.org/10.3866/pku.whxb20090716

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Abstract

(Ce0.9Nd0.1)1-xMoxO2-δ(x=0.00, 0.02, 0.05, 0.10) were prepared by a modified sol-gel method. Sample structures were characterized by X-ray diffraction (XRD) and field-emission scanning electron microscopy (FESEM).The ioaic conductivity was systematically studied over a temperature range from 350 to 800 ℃ in air using impedance spectroscopy. Results showed that the materials were single phase with a cubic fluorite structure. A higher relative density was obtained for (Ce0.9Nd0.1)1-xMoxO2-δ sintered at 1200 ℃ for 24 h compared to the relative density of Ce0.9Nd0.1O2-δ. Impedance spectroscopy showed a sharp increase in conductivity for the ceria system that contained a small amount of MoO3. The solution (Ce0.9Nd0.1)0.98Mo0.O2-δ was shown to be the best conducting phase as it had the highest conductivity (total conductivity (σ1) is 2.42 S.m-1, grain boundary conductivity (σGB) is 3.96 S.m-1 at 700℃)

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