缓冲溶液法制备SOFC用Ni/YSZ负极材料  

Preparation of Ni/YSZ for SOFC anodes by buffer-solution method

作　　者：李英[1] 唐子龙[2] 谢裕生[1] 张中太[2] 

机构地区：[1]中国科学院化工冶金研究所,北京100080 [2]清华大学材料科学与工程系,北京100084

出　　处：《材料科学与工艺》2001年第1期91-94,共4页Materials Science and Technology

基　　金：清华大学新型陶瓷与精细工艺国家重点实验室开放课题基金资助项目;香港王宽诚教育基金资助项目;中国博士后研究基金资助项目

摘　　要：固体氧化物燃料电池 (SOFC)用负极材料Ni/YSZ金属陶瓷的性能与其微观结构密切相关 .采用缓冲溶液法制备了三种Ni/YSZ金属陶瓷 ,并对其相组成、显微结构及电性能进行了表征 .分析表明 ,与机械混合法相比 ,缓冲溶液法能够使Ni在YSZ基质中分布更均匀 .相应地 ,在整个测试温度区间内 (836～1188℃ ) ,由缓冲溶液法制备的w (Ni)为 43 %的试样B - 43的电导率均远高于由传统的机械混合法制备的同一组成的试样M - 43.B - 43试样在 10 0 0℃的电导率为 70 9.73S·cm-1。The properties of Ni/YSZ cermet, which has been used as the anode material for solid-oxide fuel cells (SOFC), depends strongly on its microstructural features. In this paper, three kinds of Ni/YSZ cermets were prepared by the buffer-solution method. It was found that the buffer-solution method, compared with the mechanical mixing method, can assure more homogeneous distribution of Ni in YSZ substrate. As a result, in the examined temperature range from 836 ℃ to 1 188 ℃, the conductivity of the sample with 43 wt% Ni prepared by the buffer-solution method is always much higher than that of the sample with same Ni content prepared by the traditional mechanical mixing method. Furthermore, the sample with 43 wt%Ni has a conductivity of 709.73 s·cm -1 at 1 000 ℃ and is a promising anode material for SOFC.

关 键 词：固体氧氧化物燃料电池 负极材料 复合材料 YSZ金属陶瓷 缓冲溶液法 电导率 镍 

分 类 号：TM911.4[电气工程—电力电子与电力传动] TM24[一般工业技术—材料科学与工程]