Acta Chimica Sinica ›› 2004, Vol. 62 ›› Issue (20): 1993-1997. Previous Articles     Next Articles


赵辉, 霍丽华, 孙丽萍, 高山, 于丽君, 赵经贵   

  1. 黑龙江大学化学化工学院, 哈尔滨, 150080
  • 收稿日期:2004-02-09 修回日期:2004-04-19 出版日期:2004-10-28 发布日期:2014-02-17
  • 通讯作者: 赵辉,
  • 基金资助:

Preparation and Electrochemical Properties of LSM-CBO Composite Cathodes for ITSOFC

ZHAO Hui, HUO Li-Hua, SUN Li-Ping, GAO Shan, YU Li-Jun, ZHAO Jing-Gui   

  1. College of Chemistry and Chemical Technology, Heilongjiang University, Harbin 150080
  • Received:2004-02-09 Revised:2004-04-19 Online:2004-10-28 Published:2014-02-17

La0.85Sr0.15MnO3-Ce0.7Bi0.3O2(LSM-CBO) composite electrode for ITSOFC (intermediate temperature solid oxide fuel cell) has been prepared by citrate-gel method. XRD results indicate that LSM has no reaction with CBO at 1000℃ in air. SEM results show that the composite electrode formed good contact with Ce0.9Gd0.1O2(CGO) electrolyte after sintered at 900℃ for 2 h. The composite electrode remained unchanged even after heat treatment at 700℃ and 0.6 V cathode potential for 96 h. AC impedance spectroscopy and DC polarization measurements were used to study the composite electrode performances. The polarization resistance decreased with increasing CBO contents. The optimum value of 30 wt% CBO in LSM resulted in 2.23 Ω·cm2 area specific resistivity (ASR) at (700℃) in air, which indicates that the LSM-CBO composite electrode is a promising cathode material in ITSOFC.

Key words: intermediate temperature solid oxide fuel cell(ITSOFC), composite cathode material, LSM-CBO, electrode reaction