Ionic distribution and conductivity in lithium garnet Li7La3Zr2O12

被引：144

作者：

Li, Yutao ^{[1
,2
,4
]}

Han, Jian-Tao ^{[3
]}

Wang, Chang-An ^{[4
]}

Vogel, Sven C. ^{[3
]}

Xie, Hui ^{[1
,2
]}

Xu, Maowen ^{[1
,2
]}

Goodenough, John B. ^{[1
,2
]}

机构：

[1] Univ Texas Austin, Mat Res Program, Austin, TX 78712 USA

[2] Univ Texas Austin, Texas Mat Inst, Austin, TX 78712 USA

[3] Los Alamos Natl Lab, Lujan Ctr, Los Alamos, NM 87545 USA

[4] Tsinghua Univ, Dept Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China

来源：

JOURNAL OF POWER SOURCES | 2012年 / 209卷

关键词：

Li+-ion solid electrolyte; Li garnet; Li7La3Zr2O12; Lithium ion battery; COMPATIBILITY;

D O I：

10.1016/j.jpowsour.2012.02.100

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The garnet-related oxide with nominal formula Li7La3Zr2O12 prepared by the sol-gel method is cubic, space group Ia-3d with lattice parameter a = 12.9720 angstrom at room temperature. The occupancies of three lithium positions (24d, 48g, 96h) and the position of a small amount of Al3+ (ca 0.61 wt%) inside the grains were determined by neutron diffraction. The occupancy of the 24d Li sites was reduced to 36.0% by the Al3+ occupying the 48g sites. The bulk and total Li+-ion conductivity at 25 degrees C was 3.1 x 10(-4) S cm(-1) and 1.4 x 10(-4) S cm(-1) with an activation energy 0.34 eV in the temperature range 25-160 degrees C. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：278 / 281

页数：4

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