张玉荣;陈宇;

• 1:福州大学化学化工学院
• 2:福州大学化学化工学院 福建福州350002
• 3:福建福州350002

摘要(Abstract)：

以LiTi2(PO4)3为母体,以天然高岭石为起始原料,经高温固相反应制得了一系列新的锂快离子导体Li1.2+x-yYxTi1.9-xAl0.1Si0.1WyP2.9-yO12(以下简称Y-W-Lisicon)。X射线粉末衍射分析结果表明,在x=0.10,y≤0.20及x=0.20,y≤0.20的组成范围内能得到空间群为R3c,类似于Nasicon的三方结构,但在上述组成范围内均有杂相存在。应用交流阻抗技术测定电导率的结果表明,起始组成为x=0.10,y=0.10的样品在室温下具有较高的离子电导率,为1.65×10-5S.cm-1;组成为x=0.20,y=0.10的样品在573 K时具有较高的离子电导率,为6.53×10-3S.cm-1,该样品的分解电压为3.0 V。

关键词(KeyWords)： 矿物锂快离子导体;Y-W-Lisicon;高岭石;稀土

Abstract:

Keywords:

基金项目(Foundation): 福建省青年人才科技创新专项基金资助项目(2001J019);; 福州大学科技发展基金资助项目(2003-XQ-06)

作者(Authors): 张玉荣;陈宇;

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