高等学校化学学报 ›› 1996, Vol. 17 ›› Issue (10): 1495.

• 论文 •    下一篇

微波诱导合成固体快离子导电材料

冯守华, 庞广生, 徐如人   

  1. 吉林大学无机水热合成开放实验室, 长春, 130023
  • 收稿日期:1995-11-22 出版日期:1996-10-24 发布日期:1996-10-24
  • 通讯作者: 冯守华,男,39岁,博士,教授.
  • 作者简介:冯守华,男,39岁,博士,教授.
  • 基金资助:

    国家攀登计划项目;国家自然科学基金

Synthesis of Fast Ionic Conductor by Microwave Method

FENG Shou-Hua, PANG Guang-Sheng, XU Ru-Ren   

  1. Key Laboratory of Inorganic Hydrothermal Synthesis, Jilin University, Changchun, 130023
  • Received:1995-11-22 Online:1996-10-24 Published:1996-10-24

摘要: 采用微波法合成了具有快离子传输性质的系列磷锑酸钾化合物K3Sb3P2O14、K2SbPO6、KSbP2O8、KSb2PO8和K5Sb5P2O20以及系列锗锌酸锂固熔体Li2+2xZn1-xGeO4(-0.36

关键词: 微波诱导合成, 快离子导体, 微波合成机理

Abstract: A series of potassium vanadium phosphates K3Sb3P2O14,K2SbPO6,KSbP2O8,KSb2PO8,K5Sb5P2O2Oand Li2+2xZn1-xGeO4(0.36<x<0.85) were synthesized for the first time by microwave radiation,All microwave reactions are usually completed within60~120 minutes at a microwave frequency of 2450 MHz and power of 50~650 W.The XRDpatterns and SEMphotographs indicate that the grains of samples prepared by microwave heating are small and uniform.Compared with the conventional synthetic method,the microwave dielectric heating effect not only leads to the dramatically rapid rate of solid state reaction,but also allows some control of materials'properties and reaction selectivity.The results of preliminary study on the mechanism of microwave radiation synthesis show that the heating media can stimulate the absorption of micro-wave radiation by the reactants,and then the ionic diffusion rate on the interface of reactant and product increased.The formation of crystallites of fast ionic conductor and the crystal growth were also induced by microwave dielectric loss heating.

Key words: Microwave synthesis, Fast ionic conductor, Mechanism of microwave synthesis

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