The transport properties of the composition glassy LiPO3/crystalline SiO2 system

被引：6

作者：

Raskovalov, A. A. ^{[1
]}

Pershina, S. V. ^{[1
]}

Reznitskikh, O. G. ^{[1
]}

Denisova, T. A. ^{[2
]}

Nevmyvako, R. D. ^{[2
]}

机构：

[1] RAS, Inst High Temp Electrochem, Ural Branch, Ekaterinburg 620990, Russia

[2] RAS, Inst Solid State Chem, Ekaterinburg 620990, Russia

来源：

IONICS | 2015年 / 21卷 / 03期

关键词：

Li+ conductors; Glass-crystal composite; Mixing rule; NMR; LITHIUM; TEMPERATURE; CONDUCTION; DYNAMICS; PHASE;

D O I：

10.1007/s11581-014-1203-3

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 glassy LiPO3/crystalline SiO2 (0-20 vol%) composite solid electrolytes have been obtained by glass softening. The XRD data confirmed that the amorphous state of LiPO3 was retained in the composite. The transport characteristics were measured by impedance spectroscopy and NMR technique with Li-6 and Li-7 isotopes. The concentration dependences of specific conductivity have a maximum at similar to 5 vol% of SiO2. According to the conductivity data fitting with a mixture equation, the conductivity of LiPO3/SiO2 layer is 8.6 (at 50 A degrees C) to 17 (at 200 A degrees C) times higher compared with the starting LiPO3 glass. The NMR data confirm that the number of mobile Li ions in the composite increases. In case of porousless composites, the conductivity maximum was at similar to 15 vol% of SiO2. Thus, a slight composite effect was found in the examined glassy LiPO3/crystalline SiO2 system.

引用

页码：695 / 704

页数：10

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