Acta Phys. -Chim. Sin. ›› 2009, Vol. 25 ›› Issue (11): 2211-2217.doi: 10.3866/PKU.WHXB20091132

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Structure and Performance of Ca, Ba Doping Sm0.5Sr0.5CoO3 Cathode for Intermediate Temperature-Solid Oxide Fuel Cells

ZHU Cheng-Fei, WANG Gang, XUE Jin-Hua, OUYANG Ping-Kai   

  1. College of Materials Science &Engineering, Nanjing University of Technology, Nanjing 210009, P. R. China|College of |Biotechnology and Pharmaceutical Engineering, Nanjing University of Technology, Nanjing 210009|P. R. China
  • Received:2009-06-12 Revised:2009-09-02 Published:2009-10-28
  • Contact: ZHU Cheng-Fei E-mail:zhucf@njut.edu.cn

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Abstract:

The structure and performance of SmSr1-xAexCo2O6 (x=0, 0.2, 0.4, 0.6, 0.8, 1; Ae=Ca, Ba) as intermediate temperature-solid oxide fuel cell (IT-SOFC) cathodes were investigated by X-ray diffraction (XRD), thermogravimetry (TG), thermal expansion, electrical conductivity, and electrochemical impedance spectroscopy (EIS). The SmSr1-xAexCo2O6 system's structure changes as x increases from 0 to 1. The SmSr0.8Ae0.2Co2O6 (SSAC; Ae=Ca, Sr, Ba) system has an orthorhombic structure with a Pnma space group. The crystal parameter of SSAC increases in the following order: Sr

Key words: Cathode material, IT-SOFC, SmSr1-xAexCo2O6, Structure, Performance