The Preparation of Li1.5Al0.5Ge1.5(PO4)3 Glass-Ceramics with Lithium-Ion Conductivity from an Oxalate Precursor

被引：3
作者：
Kunshina, G. B. [1 ]
Bocharova, I. V. [1 ]
机构：
[1] Russian Acad Sci, Kola Sci Ctr, Tananaev Inst Chem & Technol Rare Elements & Mine, Apatity 184209, Russia
来源：
GLASS PHYSICS AND CHEMISTRY | 2020年 / 46卷 / 06期
关键词：
glass-ceramic solid electrolytes; lithium-ion conductivity; glass transition temperature; crystallization temperature; SOLID-ELECTROLYTE; CRYSTALLIZATION TEMPERATURE; GERMANIUM;
D O I：
10.1134/S1087659620060140
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
An Li1.5Al0.5Ge1.5(PO4)(3) glass-ceramic solid electrolyte having a NASICON structure and possessing lithium-ion conductivity is prepared. The differential scanning calorimetry data show that the oxalate precursor significantly reduces the melting temperature of a raw material by 200-300 degrees C to synthesize the Li1.5Al0.5Ge1.5(PO4)(3) glass ceramics. The glass appears to be transparent and colorless after melting at 1150 degrees C and subsequent cooling. The glass transition temperature is 512 degrees C, whereas an intense exothermic crystallization peak of Li1.5Al0.5Ge1.5(PO4)(3) is observed at 633 degrees C. The monophase glass-ceramics, free of nonconductive impurities, is obtained via glass crystallization at 850-900 degrees C. The ionic conductivity of the Li1.5Al0.5Ge1.5(PO4)(3) glass-ceramics is 2 x 10(-4) S/cm at room temperature.
引用
收藏
页码：576 / 583
页数：8
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