Novel nanocrystalline mixed conductors based on LiFeBO3 glass

被引：9
作者：
Michalski, Przemyslaw P. [1 ]
Pietrzak, Tomasz K. [1 ]
Nowinski, Jan L. [1 ]
Wasiucionek, Marek [1 ]
Garbarczyk, Jerzy E. [1 ]
机构：
[1] Warsaw Univ Technol, Fac Phys, Koszykowa 75, PL-00662 Warsaw, Poland
来源：
SOLID STATE IONICS | 2017年 / 302卷
关键词：
Lithium-borate glass; Thermal nanocrystallization; Mixed conductor; Li-ion batteries; Cathodes; CATHODE; PERFORMANCE; BATTERIES; CERAMICS;
D O I：
10.1016/j.ssi.2016.12.002
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：
Novel nanocrystalline mixed conductors were obtained by thermal nanocrystallisation of lithium iron -borate glasses (nominally LiFeBO3) prepared via melt-quenching method. After heat treatment, a glass-ceramics consisting of FeBO3 and LiFeBO3 phases was obtained. Grain sizes, estimated using Scherrer formula, were 45-50 nm and 70-80 nm, respectively. Value of electrical conductivity of the initial glass was estimated as 5.8.10(-12) S cm(-1). After annealing at 475 degrees C, a growth by a factor 2.4.10(6) was observed, leading to final conductivity value 1.4.10(-5)S cm(-1) at room temperature. The activation energy of electronic conductivity was lowered from 0.81 eV for glass to 0.18 eV for thermally treated material. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：40 / 44
页数：5
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