High Li ion conductivity in strontium doped Li7La3Zr2O12 garnet

被引：113

作者：

Dumon, Alexandre ^{[1
]}

Huang, Mian ^{[1
]}

Shen, Yang ^{[1
]}

Nan, Ce-Wen ^{[1
]}

机构：

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

来源：

SOLID STATE IONICS | 2013年 / 243卷

关键词：

Solid electrolyte; Garnet; Li ion conductivity; Strontium doping; CUBIC LI7LA3ZR2O12; SOLID ELECTROLYTES; LITHIUM; AL; SRZRO3; GA; BA;

D O I：

10.1016/j.ssi.2013.04.016

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：

Strontium doped lithium ion garnets Li7La3Zr2O12 (LLZ) with 0.9 wt% to 8.4 wt% content of added Sr were synthesized via conventional solid-state reaction. X-ray diffraction patterns confirmed the cubic garnet structure of the sintered samples. A small amount of strontium was substituted to lanthanum in LLZ lattice. Further analysis showed SrCO3 acted as a sintering aid for cubic LLZ ceramics and significantly increased the grain size of the sintered pellets. A conductivity of 2.10 x 10(-4) S/cm at 297 K was obtained for the undoped LLZ. The total ionic conductivity reached a maximum of about 5 x 10(-4) S/cm at 297 K with an activation energy of about 0.31 eV for 1.7 wt% Sr added LIZ sintered for 20-24 Is in alumina crucible. (C) 2013 Elsevier B.V. All rights reserved.

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页码：36 / 41

页数：6

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