电泳沉积法制备La2Mo2O9氧离子导体薄膜  

Preparation of La_2Mo_2O_9 Oxide-ion Conductor Films by Electrophoretic Deposition

作　　者：张国光[1] 李琴[1] 曹经倩[1] 高荣兵[1] 方前锋[1,2] 

机构地区：[1]南昌航空大学材料科学与工程学院,江西南昌330063 [2]中国科学院固体物理研究所,安徽合肥230031

出　　处：《稀土》2009年第3期27-30,共4页Chinese Rare Earths

基　　金：国家自然科学基金项目资助(50672100);江西省教育厅科技项目资助(2006[155];2006[313])

摘　　要：采用电泳沉积方法制备陶瓷薄膜过程中,陶瓷颗粒分散良好的稳定悬浮体系是获得高质量薄膜的关键。La2Mo2O9在800℃具有较高的离子电导率,在中温固体氧化物燃料电池中有潜在应用价值。本文采用柠檬酸盐法制备了粒径约为150nm的La2Mo2O9粉体。通过ζ电位的测量,确定了稳定的悬浮体系中丙酮、水、I2和La2Mo2O9粉体的含量,采用电泳沉积方法在La0.8Sr0.2CoO3-x基体上制备了La2Mo2O9薄膜。To obtain high quality ceramic films by electrophoretic deposition （EPD） method, a supension system with well dispersed ceramic powders is very important. La2Mo2O9 has potential application in intermediate temporature solid oxide fuel cells （IT SOFC） for its high ionic conductivity at 800℃. La2Mo2O9 powders with the size about 150nm in dianreter were synthesized by the citrate - gel method. ζ potential , a parameter to charactrize the stability of a suspension system, was used to determine the concentration of acetone, water, 12 and La2Mo209 powder. La2Mo2O9 films were fabricated on La0.8Sr0.2CoO3-x substrate by means of EPD method.

关 键 词：电泳沉积 氧离子导体 Ζ电位 

分 类 号：TM911.4[电气工程—电力电子与电力传动]