纳米级Li_(2+x)Gd_xSi1_(+x)O_3的溶胶—凝胶法合成及离子导电性研究

电化学（中英文） ›› 1999, Vol. 5 ›› Issue (3): 272-275.

纳米级Li_(2+x)Gd_xSi1_(+x)O_3的溶胶—凝胶法合成及离子导电性研究

陈汝芬,宋秀芹,刘华亭

河北师范大学化学系!石家庄050016,河北师范大学化学系!石家庄050016,河北师范大学化学系!石家庄050016

收稿日期:1999-08-28 修回日期:1999-08-28 出版日期:1999-08-28 发布日期:1999-08-28

Preparation and Ionic Conductivity of Nanometer_sized Li 2+x Gd x Si 1+x O 3 by the Sol_Gel Method

Chen Rufen * Song Xiuqin Liu Huating

(Dept. of Chem., Hebei Normal University, Shijiazhuang 050016

Received:1999-08-28 Revised:1999-08-28 Published:1999-08-28 Online:1999-08-28

摘要/Abstract

摘要： 以无机盐和金属醇盐为前驱物，用溶胶—凝胶法制备了Ｌｉ２＋ｘＧｄｘＳｉ１＋ｘＯ３（ｘ＝０～０．１５），用ＤＴＡ、ＴＧ、ＸＲＤ、ＴＥＭ及交流阻谱等技术对样品的结构、形貌、粒径及离子导电性等进行掺杂量观察和测试．结果表明：其固溶体形成的掺杂量范围是０＜ｘ ≤０．０９，在掺杂量范围内，样品电导率随掺杂量增加而增高；粉末样品的平均粒径为８０ｎｍ；与传统的固相合成方法相比，该法可使样品的生成温度降低，离子导电性得到提高．

关键词: Li_(2+x)Gd_xSi_(1+x)O_3, 离子导电性, 溶胶-凝胶法

Abstract: Li 2+x Gd xSi 1-x O 3( x =0～0.15) samples have been prepared by the Sol_Gel method. The power samples were characterized by DTA_TG, XRD and TEM. Ionic conductivity of the sinter was determined by means of A_C impedance measurements. The experimental results showed that the range of solid_solution was 0< x ≤0.09, while the conductivity of samples raised with increasing amount of Gd 2O 3 added, and average grain size of samples was 80 nm. In comparing with the samples by the conventional solid state reaction, the samples prepared by Sol_Gel method required lower temperature and presented higher ionic conductivity.

Key words: Li 2+x Gd xSi 1-x O 3, Ionic conductivity, Sol_Gel method

中图分类号:

O614.11

陈汝芬,宋秀芹,刘华亭. 纳米级Li_(2+x)Gd_xSi1_(+x)O_3的溶胶—凝胶法合成及离子导电性研究[J]. 电化学（中英文）, 1999, 5(3): 272-275.

Chen Rufen * Song Xiuqin Liu Huating . Preparation and Ionic Conductivity of Nanometer_sized Li 2+x Gd x Si 1+x O 3 by the Sol_Gel Method[J]. Journal of Electrochemistry, 1999, 5(3): 272-275.

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链接本文: https://electrochem.xmu.edu.cn/CN/

https://electrochem.xmu.edu.cn/CN/Y1999/V5/I3/272

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