High lithium conductivity in Li1.3Cr0.3Ge1.7(PO4)3 glass-ceramics

被引：13
|
作者：
Xu, XX [1 ]
Wen, ZY [1 ]
Gu, ZH [1 ]
Lin, ZX [1 ]
机构：
[1] Chinese Acad Sci, Shanghai Inst Ceram, Shanghai 200050, Peoples R China
来源：
MATERIALS LETTERS | 2004年 / 58卷 / 27-28期
基金：
中国国家自然科学基金;
关键词：
lithium ionic conductor; glass-ceramics; Li1.3Cr0.3Ge1.7(PO4)(3);
D O I：
10.1016/j.matlet.2004.05.080
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A Li2O-Cr2O3-GeO2-P2O5 glass was prepared and converted into glass-ceramics through treating at approximately 800-1000 degreesC for 12 h. X-ray diffraction (XRD) analysis indicated that the phase present in the glass-ceramics was LiGe2(PO4)(3)-type structure in which Ge4+ ions were partially replaced by Cr3+ ions. The lithium ion conductivity of the glass-ceramics increased with the growth of the phase, and the highest value of 5.7 x 10(-4) S/cm with an activation energy as low as 27.8 KJ/mol was obtained at room temperature for the specimen treated at 850 degreesC for 12 h. The high conductivity, good chemical stability and easy fabrication of Li1+xCrxGe2-x(PO4)(3) system suggest they are promising solid electrolytes for all-solid-state Li-ion rechargeable batteries. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码：3428 / 3431
页数：4
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