双层干压制备阳极支撑的氧化锆薄膜燃料电池  

Study on YSZ membrane electrolyte fuel cells supported on anode by double-layer dry pressing method

作　　者：刘克艳[1] 吕喆[1] 贾莉[1] 陈孔发[1] 魏波[1] 李淑彦[1] 苏文辉[1,2,3] 

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]吉林大学凝聚态物理系,吉林长春130023 [3]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11期737-740,共4页Chinese Journal of Power Sources

基　　金：国家"863"计划基金资助项目(No.2001AA323090)

摘　　要：采用一种既简单又经济的双层干压法,NiO-YSZ阳极基底上制备致密的氧化钇稳定的氧化锆(YSZ)固体电解质薄膜,经1400!共烧结后,得到厚度约60"130mm的YSZ薄膜。薄膜的厚度可以通过调整YSZ粉体质量来控制。测试了NiO-YSZ支撑体材料和YSZ的干压坯体烧结曲线,以确定烧结收缩率。对薄膜进行的X-射线衍射(XRD)测量结果表明,薄膜为YSZ的立方萤石结构,NiO与YSZ在烧结条件下未发生反应。以此方法制备的不同厚度的YSZ薄膜为电解质,NiO-YSZ金属陶瓷为阳极,La0.7Sr0.3MnO(LSM)阴极制成固体氧化物燃料电池(SOFC)单电池,对单电池的放电性能及其在工作条件下的阻抗谱进行了测试。电池的开路电压始终在1V左右,900!最大电流密度达1.3A·cm#2。分别在800!和900!时得到了175mW·cm#2和300mW·cm#2的最大比功率。A simple and economic double-layer dry-pressing process has been developed for preparing 8 %-yttria-stabilized zirconia （8 YSZ） membranes on porous NiO-YSZ anode substrates .After the bilayers were co-sintered at 1 400℃ for 4 h, YSZ electrolyte membranes as thin as 60-130 pm were obtained by double-layer dry-pressing, The membranes＇ thickness can be readily controlled by the mass of powders, The sintering curve and the sintering contractibility ratio were studied. X-ray diffraction （XRD） results show that the membrane is a cubic fluorite structure and there is no reaction between NiO and YSZ during the sintering process. At last the electrolyte membranes were studied in SOFC with Lao.TSr0.3MnO3（LSM） as cathode . The performance and impedance spectra of the cells were measured. Power densities of 175 mW·cm^-2 and 300 mW·cm^-2are demonstrated at 800℃ and 900℃,respectively.Open-circuit voltages about 1 V are obtained.

关 键 词：YSZ薄膜 双层干压法 共烧结 固体氧化物燃料电池 氧化锆薄膜 阳极基底 制备 支撑 固体电解质薄膜 X-射线衍射 

分 类 号：TM911.4[电气工程—电力电子与电力传动] TN141[电子电信—物理电子学]