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研究论文

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
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  • 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

  网络出版日期: 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
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  • (Dept. of Chem., Hebei Normal University, Shijiazhuang 050016

Received date: 1999-08-28

  Revised date: 1999-08-28

  Online published: 1999-08-28

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 + x Gd x Si1 + x O3( x = 0 ~0 .1 5) ,用 D T A、 T G、 X R D、 T E M 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 80 n m ;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.

本文引用格式

陈汝芬 . 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, 1999 , 5(3) : 272 -275 . DOI: 10.61558/2993-074X.3187

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.

参考文献

1   Raistrick I D, Chun Ho , Huggins R A. Ionic conductivity of so m e lithiu m silicates and alu minosilicates . J. Electroche m . Soc .,1 976 ,123(10) :1 469 2  杨 南如,余 桂郁.溶胶 - 凝胶 法的基本 原理与 过程.硅酸 盐通报 ,1992 ,11(2) :56 3   Bouka m p B A. Equivalent circuit users m anua & soft ware ( ver . 4 .51 ) University of Tw ente , the Nether Lands . 2nd , edn , 1993 4  孙 纲,杨森 等.新颖的 玻璃制 备方法:溶 胶- 凝 胶法.化 学通报,1990 ,11 :45
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