Chinese Journal of Applied Chemistry ›› 1998, Vol. 0 ›› Issue (3): 22-25.

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Synthesis and Ionic Conductivity of BaCe1-xRExO3-0.5x Prepared by Sol-gel Method

He Zhiqi, Jiang Kai, Meng Jian, Ren Yufang, Su Qiang   

  1. Open Laboratory of Rare Earth Chemistry and Physics, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022
  • Received:1997-11-11 Revised:1998-03-12 Published:1998-06-10 Online:1998-06-10

Abstract: A series of perovskite complex oxides BaCe1-xRExO3-0.5x(RE=La,Nd,Sm,Eu,Gd,Dy,Ho,Er and Y) were synthesized by sol gel method. The structure and synthetic process were studied by XRD, TGA and DTA. The ionic conductivities were measured at diffe rent temperature by ac impedance method. The effects of RE3+ dopant on the conductivities of BaCeO3 were discussed. The synthetic temperature by sol gel method was 600~800 ℃ lower than that by traditional ceramic method. The ionic conductivities of BaCeO3 doped with RE3+ were 10~40 times as much as that of pure BaCeO3.

Key words: BaCeO3, rare earth complex oxide, sol-gel method, ionic conductivity, ac impedance