新型固体电解质Ce_(5.9)Ga_(0.1)MoO_(15-δ)的溶胶-凝胶制备及其导电性能  

Synthesis and properties of newsolid stateelectrolyte materials Ce_(5.9)Ga_(0.1)MoO_(15-δ)

作　　者：周德凤[1] 于宝杰[1] 孟健[2] 

机构地区：[1]长春工业大学生物工程学院,吉林长春130012 [2]中国科学院长春应用化学研究所稀土化学与物理重点实验室,吉林长春130022

出　　处：《东北师大学报（自然科学版）》2008年第4期81-84,共4页Journal of Northeast Normal University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(200671088,20871023);吉林省科技发展计划项目(20070510).

摘　　要：采用溶胶-凝胶法和固相法制备了Ce5.9Ga0.1MoO15-δ.通过差热-热重分析、X射线粉末衍射、X射线光电子能谱和交流阻抗谱等手段对其进行结构表征和导电性能测试.结果表明:Ga的掺杂可增加氧离子空位浓度,改善母体的电导率;测试温度为800℃时溶胶-凝胶法合成Ce5.9Ga0.1MoO15-δ的电导率为6.5×10-3S/cm,高于固相法制备材料的电导率(1.8×10-3S/cm).The Ce5.9Ga0.1MoO15-δ has been synthesized by sol-gel and solid state method. The structure was characterized by differential thermal/thermogravimetry （DTA/TG）, X-ray diffraction （XRD）, X-ray photo- electron spectroscopy （XPS） and conductivity was investigated by AC impedance spectroscopy. The results showed that the concentration of oxygen vacancy increased with the increasing content of Ga which resulted in the increase of ionic conductivity. The conductivity is 6.5 × 10^-3 S/cm for the sample prepared by sol-gel method,which is higher than that synthesized by solid state （1.8×10^-3 S/cm） method at 800℃.

关 键 词：固体电解质 电导率 溶胶-凝胶法 固体氧化物燃料电池 

分 类 号：O614.33[理学—无机化学]