恒压电泳制备YSZ电解质膜的研究  

Preparation of YSZ electrolyte film by electrophoretic deposition under constant voltage

作　　者：王振华[1] 孙克宁[2] 沈哲敏[1] 张乃庆[2] 韩伟[1] 

机构地区：[1]哈尔滨工业大学化工学院,哈尔滨150001 [2]哈尔滨工业大学基础与交叉科学研究院,哈尔滨150001

出　　处：《材料科学与工艺》2009年第3期322-325,共4页Materials Science and Technology

基　　金：国家自然科学基金资助项目(90510006)

摘　　要：为了降低固体氧化物燃料电池(SOFC)的操作温度,采用恒压电泳沉积方法在NiO-YSZ阳极基体上制备了YSZ电解质薄膜,通过电泳沉积电流的测量及SEM测试,研究了不同分散介质对悬浮体系稳定性及YSZ膜微观结构的影响,分析了I2、PVB作为添加剂在电泳沉积过程中的作用机理.实验结果表明,使用丙酮作为分散介质,并加入0.5 g/L的I2时,能够获得较稳定的悬浮液.在其中加入0.3 g/L的PVB能够增强YSZ颗粒间的作用力,提高YSZ膜的致密性.研究认为,电泳沉积悬浮液的组成对沉积电流和沉积膜的微观形貌都具有较大影响.In order to reduce the operation temperature of solid oxide fuel cells, an electrophoretic deposition method under constant voltage was adopted to prepare YSZ thin electrolyte film on porous NiO/YSZ anode substrates. The effects of different solvent on the stability of the suspension system and the microstructure of the film were investigated through deposition current measurement and SEM observation. The function mechanism of I2 and PVB on the microstrueture of the film was investigated. The results showed that the high stability of suspension system was obtained using acetone as solvent and I2 addition of 0. 5 g/L. The density of YSZ film was enhanced by adding O. 3 g/L PVB to the suspension to increase the strength among YSZ particles. It is concluded that the composition of suspension has a significant influence on deposition current and morphology of the obtained thin films.

关 键 词：SOFC YSZ电解质膜 恒压电泳 悬浮体系 

分 类 号：TM919.4[电气工程—电力电子与电力传动]