王立帆;刘媛媛;彭军;安胜利;

• 1:内蒙古科技大学材料与冶金学院内蒙古先进陶瓷材料与器件重点实验室
• 2:内蒙古科技大学化学与化工学院

摘要(Abstract)：

应用溶胶-凝胶法制备了Ce_(0.8)Sm_(0.2)O_(1.9)固体电解质粉体,通过X射线衍射对所制备的电解质粉体进行了物相分析。研究表明,Sm2O3已经固溶到CeO_2中形成了具有萤石结构CeO_2基固溶体。经成型并在1450℃下烧结2 h获得致密的Ce_(0.8)Sm_(0.2)O_(1.9)固体电解质。通过组装含有氧离子阻塞电极电池(-)致密Al2O3,Pt|Ce_(0.8)Sm_(0.2)O_(1.9)(SDC)固态电解质|Pt,O2(+)测试空气中不同温度下的电子电导。应用扫描电子显微镜观察所制备试样的微观组织形貌,结果表明:制备的电解质组织致密,高温粘合剂、电解质及刚玉坩埚结合紧密,保证了阻塞电极的气密性。采用Hebb-Wagner离子阻塞电极法测定了Ce_(0.8)Sm_(0.2)O_(1.9)在空气气氛下的电子导电性。结果显示:在测量温度范围内Ce_(0.8)Sm_(0.2)O_(1.9)固体电解质的电子电导率在1×10-8~1×10-6m S·cm-1之间,经计算得出活化能的平均值为0.9885 e V。

关键词(KeyWords)： 电子电导率;Ce0.8Sm0.2O1.9;固体电解质;Hebb-Wagner极化法;稀土

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(51474133)资助

作者(Author): 王立帆;刘媛媛;彭军;安胜利;

Email:

DOI:

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