The effect of LiF doping on the electrochemical performance of Li2MnSiO4 for lithium ion batteries

被引：0
|
作者：
Wei, Yi [1 ]
Tang, Zhiyuan [1 ]
Yan, Ji [1 ]
Ma, Li [2 ]
机构：
[1] Tianjin Univ, Sch Chem Engn & Technol, Tianjin, Peoples R China
[2] McNair Technol Co Ltd, Dongguan, Guangdong, Peoples R China
来源：
2011 INTERNATIONAL CONFERENCE ON FUZZY SYSTEMS AND NEURAL COMPUTING (FSNC 2011), VOL VII | 2011年
关键词：
Li2MnSiO4; liquid solution route; LiF doping; CATHODE MATERIAL; LI2FESIO4;
D O I：
暂无
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Li-2.05MnSiO4F0.(05) has been synthesized on the base of liquid solution route by mixing Li2SiO3, Mn(CH3COO)(2)center dot H2O and LiF. The effect of LiF doping on the electrochemical characteristics of Li2MnSiO4 are investigated. Compared with pristine Li2MnSiO4, the LiF doping sample exhibited an increase of the electron conductivity, which results in the higher reversible capacity and the improvement of both discharge capacity and cycle stability. Furthermore, in the charge curves of doping LiF, there are two obvious voltage plateaus present, corresponding the extraction of two Li+ from Li2.05MnSiO4F0.05. Additional, electrochemical impedance spectra analysis also shows that doping LiF can decrease the charge transfer resistance of Li(2)MnSia(4) and enhance the material electrochemical activity.
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页码：511 / 514
页数：4
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