固体氧化物燃料电池阳极的相转化流延制备和电化学性能研究  

Phase Inversion Tape Casting and Electrochemical Performance of Solid Oxide Fuel Cell Anode

作　　者：张玉月[1] 蔺杰[1] 苗国栓 高建峰[1] 陈初升[1] 夏长荣[1] 占忠亮[2] 王绍荣[2] 

机构地区：[1]中国科学技术大学材料科学与工程系,中科院能量转换材料重点实验室,合肥230026 [2]中国科学院上海硅酸盐研究所,中科院能量转换材料重点实验室,上海200050

出　　处：《无机材料学报》2015年第12期1291-1294,共4页Journal of Inorganic Materials

基　　金：国家自然科学基金(21176230,51572255)~~

摘　　要：采用相转化流延一步制备了NiO-Zr0.84Y0.16O2-d（YSZ）阳极支撑层和功能层,前者厚度为～700mm,含有沿厚度方向定向排列的开放直孔,后者厚度为～60mm。采用浆料涂膜法和高温共烧在阳极上制备厚度为15mm的YSZ电解质薄膜,丝网印刷制备YSZ-La0.84Sr0.16MnO3-δ（LSM）（质量比50：50）阴极。所制备的单电池显示出较高的电输出性能。以H2-3%H2O为燃料和环境空气为氧化剂,800℃时电池的峰功率密度达到891mW/cm^2,电池即使在高电流密度测试条件下也未出现明显的浓差极化,这是由于其阳极具有开放直孔结构,气相输运阻力小。For an anode-supported solid oxide fuel cell （SOFC）, the anode consists of a thick support layer with large pores and a thin functional layer with small pores. In the present work, the anode of NiO and yttria-stabilized zirconia （YSZ） comprising a porous support layer of-700μm thick and a functional layer of -60 μm thick were formed in a single step using the phase inversion tape casting method. For the as-prepared anode, the support layer contained large open pores which were aligned along the thickness direction. A thin dense YSZ electrolyte layer with a thickness of 15μm was deposited onto the anode by dip-coating and co-sintering techniques. A composite cathode of YSZ-La0.84Sr0.16MnO3-δ（LSM） with a weight ratio of 50：50 was screen-printed on the surface of the YSZ electrolyte layer. The resulting fuel cell exhibited promising electrochemical performance. A maximum power density of 891 mW/cm^2 was obtained at 800 ℃ using H2-3%H2O as the fuel and ambient air as the oxidant. The cell did not show any sign of concentration polarization even at high current densities, which should be attributed to the open straight pore structure and resultant fast gas-phase transport in the anode support.

关 键 词：固体氧化物燃料电池 阳极支撑体 相转化流延 浓差极化 

分 类 号：TQ174[化学工程—陶瓷工业] TM911[化学工程—硅酸盐工业]