恒流电泳沉积YSZ电解质薄膜的燃料电池研究  

Study on preparation of YSZ film by electrophoretic deposition under constant current and its application in SOFCs

作　　者：贾莉[1,2] 吕喆[1,3] 植柱[1] 陈孔发[1] 刘志国[1,3] 李国卿[2] 苏文辉[1,2,3,4] 

机构地区：[1]哈尔滨工业大学凝聚态科学与技术研究中心 [2]大连理工大学物理系,辽宁大连116024 [3]黑龙江省普通高校重点实验室,哈尔滨工业大学凝聚态科学与技术重点实验室,黑龙江哈尔滨150001 [4]中国科学院国际材料物理中心,辽宁沈阳110015

出　　处：《电源技术》2005年第5期274-277,共4页Chinese Journal of Power Sources

基　　金：国家"863"计划项目(2001AA323090);哈尔滨工业大学校基金项目(HIT.2000.18)

摘　　要：采用恒流电泳沉积(EPD)的方法,在NiO-YSZ阳极基底上制备出较为致密的氧化钇稳定的氧化锆(YSZ)固体电解质薄膜,1 300℃共烧结5 h后得到具有一定厚度的YSZ薄膜.利用SEM对YSZ薄膜的形貌与膜厚进行了表征.在此基础上,以La0.6Sr0.4Co0.2Fe0.8O3(LSCF)为阴极制成单电池,并对单电池的性能及阻抗谱进行了测试,在650℃时得到单电池的最大开路电压为0.84 V,单电池在750℃时的最大电流密度为0.64 A/cm2,最大功率密度达145 mW/cm2;800℃时的短路电流密度接近0.9 A/cm2,最大功率密度达200 mW/cm2.阻抗谱测试结果表明,电解质部分的电阻占电池内阻的1/4～1/3;电极在-电解质界面处存在的孔洞对电池的性能产生了不利的影响.In this paper, electrophoretic deposition (EPD) under constant current was adopted to prepare yttia-stabilized zirconia (YSZ) electrolyte thin film on porous NiO/YSZ anode substrates. After co-sintering at 1 300 ℃ for 5 h, YSZ layer were obtained. The morphology and the thickness of YSZ film were characterized with SEM. Then La0.6Sr0.4Co0.2Fe0.8O3 (LSCF) was applied as a cathode of single cell of SOFCs. The performance and impedance spectra of this cell were measured. The maximum open circuit voltage was 0.84 V at 650 ℃. The current density and power density at 750 ℃ were 0.64 A/cm2 and 145 mW/cm2 and at 800 ℃ were 0.9 A/cm2 and 200 mW/cm2, respectively. The results of impedance spectra implied that the electrolyte resistance was only 1/4~1/3 of the whole cell. The performance of the cell was affected by the holes existed on the interface of electrode and electrolyte.

关 键 词：YSZ薄膜 电泳沉积 燃料电池 

分 类 号：TM911.4[电气工程—电力电子与电力传动]