氧离子导体La_2Mo_(2-y)Al_yO_(9-δ)的化学稳定性研究  

Study on Chemical Stability of Oxygen-ion Conductors La_2Mo_(2-y)Al_yO_(9-δ)

作　　者：李相虎[1] 李丹[1] 

机构地区：[1]武汉工业学院数理系,武汉430023

出　　处：《材料导报》2010年第16期15-17,共3页Materials Reports

基　　金：湖北省教育厅科学研究计划项目(Q20091802);武汉工业学院科研启动基金(08R01)

摘　　要：采用固相反应法制备了氧离子导体La2Mo2-yAlyO9-δ(y=0、0.1、0.2、0.3)陶瓷样品。用XRD表征了其晶体结构,并用交流阻抗谱方法研究了样品在还原气氛中(5%H2/Ar)的化学稳定性。结果表明,La2Mo1.9Al0.1-O9-δ样品在还原气氛中的化学稳定性最好,当Al的掺杂量达到10%(y=0.2)时,样品就会被分解,同时化学稳定性能降低。A serious oxide-ion conductors La2Mo2-yAlyO9-δ（y=0、0.1、0.2、0.3） samples are prepared with solid-state reaction method. Their structures are characterized with XRD measurements, and the chemical stability of the samples are studied in the reducing atmosphere（5 % H2/Ar）. The results indicate that only the oxide^ion conductorLa2Mo1.9Al0.1-O9-δ has the best chemical stabilizing effect, when the substitution amount of Al reaches to 10% （y= 0. 2）, the sample is decomposed, with the chemical stability decreasing.

关 键 词：氧离子导体 La2Mo2O9 化学稳定性 电导率 

分 类 号：TM911[电气工程—电力电子与电力传动]