Ce0.8Gd0.2O1.9电解质的电子导电研究  

Study on electronic conductivity of Ce0.8Gd0.2O1.9 solid electrolyte

作　　者：刘媛媛 安胜利[1,3] 李舒婷[1,3] 蔡长焜 LIU Yuanyuan;AN Shengli;LI Shuting;CAI Changkun(Materials and Metallurgy School, Inner Mongolia University of Science and Technology, Baotou 014010, China;Chemistry and Chemical Engineering School, Inner Mongolia University of Science and Technology, Baotou 014010, China;Inner Mongolia Key Laboratory of Advanced Ceramics and Device, Inner Mongolia University of Science and Technology, Baotou 014010, China)

机构地区：[1]内蒙古科技大学材料与冶金学院,内蒙古包头014010 [2]内蒙古科技大学化学与化工学院,内蒙古包头014010 [3]内蒙古科技大学内蒙古先进陶瓷与器件重点实验室,内蒙古包头014010

出　　处：《内蒙古科技大学学报》2020年第3期239-242,共4页Journal of Inner Mongolia University of Science and Technology

基　　金：国家自然科学基金资助项目(51474133);内蒙古自治区自然科学基金资助项目(2017MS0221)。

摘　　要：利用溶胶凝胶合成法制备了Ce0.8Gd0.2O1.9(GDC)电解质,并利用XRD,SEM对GDC粉体和电解质基片进行了物相表征.运用Hebb-Wagner极化法组装离子阻塞电极,考察GDC电解质在空气气氛下450~750℃的电子电导率.实验结果表明,GDC呈立方萤石结构,电解质片表面与断面致密.同时,测定出的GDC电子电导率在750℃时为5.698×10^-5 S/cm,在450~750℃下电子电导率与温度呈良好的线性关系.Ce0.8Gd0.2O1.9(GDC)solid electrolyte was prepared using sol-gel method.The GDC powder and electrolyte substrates were characterized by XRD and SEM.Ionic blocking electrodes were assembled by Hebb-Wagner polarization method,and the electronic conductivity of GDC solid electrolyte during 450~750℃in air was studied.The results showed that the structure of GDC is cubic fluorite;both the surface and the section of electrolyte were dense.At the same time,the electronic conductivity of GDC measured at 750℃is 5.698×10^-5 S/cm,and there is a good linear relationship between the electronic conductivity and temperature at 450~750℃.

关 键 词：溶胶凝胶法 Gd2O3掺杂CeO2 固体电解质 Hebb-Wagner极化法 

分 类 号：TM911.4[电气工程—电力电子与电力传动]