无机材料学报

• 研究论文 •    下一篇

新型La2Mo2O9基氧离子导体的研究进展

方前锋1,2, 王先平2, 程帜军2, 张国光1   

  1. 1. 南昌航空工业学院材料科学与工程系, 南昌 330034 ; 2. 中国科学院固体物理研究所材料物理重点实验室, 230031
  • 收稿日期:2004-12-27 修回日期:2005-02-28 出版日期:2006-01-20 网络出版日期:2006-01-20

Research Status of the Novel La2Mo2O9-based Oxide-ion Conductors

FANG Qian-Feng1,2, WANG Xian-Ping2, Cheng Zhi-Jun2, ZHANG Guo-Guang1   

  1. 1.Department of Materials Sciences and Engineering; Nanchang Institute of Aeronautical Technology; Nanchang 330034, China; 2. Key Laboratory of Materials Physics; Institute of Solid State Physics; Chinese Academy of Sciences; Heifei 230031; China
  • Received:2004-12-27 Revised:2005-02-28 Published:2006-01-20 Online:2006-01-20

摘要: 自2000年Lacorre等人报道La2Mo2O9具有较高的氧离子电导率以来,La2Mo2O9 基氧离子导体由于具有优异的性能而受到人们的关注.本文综述了新型氧离子导体La2Mo2O9 的研究现状.重点介绍了纯La2Mo2O9及其掺杂体系的结构与相变、氧离子电导率、氧空位扩散机理、化学稳定性和热膨胀系数等性能.已有的研究结果表明,基于La2Mo2O9的氧离子导体可望在固体氧化物燃料电池、氧传感器、透氧膜等方面得到应用.

关键词: 氧离子导体, La2Mo2O9, 固体氧化物燃料电池

Abstract:

La2Mo2O9-based oxide-ion conductors have attracted more and more attention since they were reported having high ionic conductivity in 2000 by Lacorre et. al. In this paper the recent investigation
on the novel La2Mo2O9-based oxide-ion conductors is reviewed. It is focused on the structure and phase transition, oxide-ion conductivity, mechanism of oxygen vacancy diffusion, chemical stability,
and thermal expansion coefficient in the pure and doped La2Mo2O9 samples. It is pointed out that the La2Mo2O9-based oxide-ion conductors could be possibly applied in the field
such as solid oxide fuel cells, oxygen sensors, oxygen permeable membrane.

Key words: oxide-ion conductor, La2Mo2O9, SOFC

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