物理化学学报 >> 1995, Vol. 11 >> Issue (10): 876-880.doi: 10.3866/PKU.WHXB19951004

研究论文 上一篇    下一篇

一种层状化合物的水热合成及其特性

温兆银,林祖纕,陈昆刚   

  1. 中国科学院上海硅酸盐研究所，上海 200050
  • 收稿日期:1994-10-27 修回日期:1995-01-09 发布日期:1995-10-15
  • 通讯作者: 温兆银

Hydrothermal Synthesis and Characteristics of a Layered Compound

Wen Zhao-Yin,Lin Zu-Xiang,Chen Kun-Gang   

  1. Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 200050
  • Received:1994-10-27 Revised:1995-01-09 Published:1995-10-15
  • Contact: Wen Zhao-Yin

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摘要：

在100－250℃温度范围内，用水热法合成了具有层状结构的化合物LiO•2Al2O3•nH2O．通过X-射线衍射分析了其结构特征，探索了合成条件对水热反应产物的影响，用热分析研究了Li2O•2Al2O3•nH2O的脱水过程，并确定化合物的含水率，用交流复平面阻抗谱测定了化合物在不同温度时的离子电导率. 结果表明，用水热法成功地合成了具有较高离子电导率的单相Li2O•2Al2O3•nH2O化合物．

关键词: Li2O 2Al2O3 nH2O, 合成, 热稳定性, 固体电解质, 离子电导率

Abstract:

 The layered compound Li2O•2Al2O3•nH2O was synthesized by using hydrothermal route in the temperature range of 100-250℃, its structure was analyzed by X-ray diffraction patterns. The experiments showed that the formation of Li2O•2Al2O3•nH2O was influenced by synthesis conditions, including the kind and the ratio of reaction components, temperature et al. The results of thermal analyses suggested the dehydration of its layer water and structural water at 160℃ and 230℃ respectively, and the water content was determined accordingly. The ionic conductivities of Li2O﹒2Al2O3﹒nH2O at various temperatures demonstrates its satisfactory electrical property.

Key words: Li2O 2Al2O3 nH2O, Synthesis;Thermal stability, Solid electrolyte, Ionic conductivity