利用电解质材料夹层提高SOFCs的阴极性能  

Improving the performance of SOFCs cathode by using an interlayer based on the electrolyte material

作　　者：钟昊[1] 王世忠[1] 邹玉满[1] 

机构地区：[1]厦门大学化学系,福建厦门361005

出　　处：《电池》2005年第6期422-424,共3页Battery Bimonthly

基　　金：福建省科技攻关计划重点项目(2003H046);留学回国人员基金资助项目

摘　　要：利用在SSC-LSGMC5复合电极与LSGMC5电解质片之间加入与电解质相同材料的夹层的方法,提高了电极性能.不同温度下,在LSGMC5电解质片上印刷了厚度为2～5μm的LSGMC5薄膜,在薄膜上印刷了SSC-15%LSGMC5复合电极,并进行了表征.SEM结果表明:当夹层焙烧温度大于1 400℃时,夹层为致密结构,并与电解质完好地结合在一起,夹层与电极的结合程度远优于无夹层的电极|电解质界面.在700℃纯氧条件下,夹层(1 400℃焙烧)的引入,使电极极化电阻由0.38 Ω·cm2减小至0.12 Ω·cm2,1 A/cm2下的极化过电位由0.23 V减小至0.10 V.LSGMC5 interlayer was added between SSC-LSGMC5 composite electrode and LSGMC5 electrolyte flake, which had improved the cathode performance. The LSGMC5 interlayer was sintered on the LSGMC5 electrolyte flake at various temperatures, the thickness was about 2～5 μm. The SSC-15% LSGMC5 composite electrode was printed on the sintered interlayer and its performance was analyzed.SEM images exhibited that LSGMC5 interlayer well coated on the electrolyte was dense while the interlayer was sintered at a temperature higher than 1 400 ℃. The coating degree of the electrodel interlayer interface sintered at high temperatures was better than that of the electrode ｜ electrolyte interface without an interlayer. The polarization resistance of cathode decreased from 0.38 Ω·cm^2 to 0.12 Ω·cm^2 and the polarization over-petential under 1 A/cm^2 decreased from 0.23 V to 0.10 V at 700 ℃ in oxygen by using an LSGMC5 interlayer calcined at 1 400 ℃.

关 键 词：固体氧化物燃料电池 阴极 镓酸镧 夹层 

分 类 号：TM911.4[电气工程—电力电子与电力传动]