Study on the cycling performance of Li4Ti5O12/LiCoO2 cells assembled with ionic liquid electrolytes containing an additive

被引：26
|
作者：
Kim, Jin Hee [1 ]
Bae, Seo-youn [1 ]
Min, Jeong-Hye [2 ]
Song, Seung-Wan [2 ,3 ]
Kim, Dong-Won [1 ]
机构：
[1] Hanyang Univ, Dept Chem Engn, Seoul 133791, South Korea
[2] Chungnam Natl Univ, Grad Sch Green Energy Technol, Taejon 305764, South Korea
[3] Chungnam Natl Univ, Dept Fine Chem Engn & Appl Chem, Taejon 305764, South Korea
来源：
ELECTROCHIMICA ACTA | 2012年 / 78卷
基金：
新加坡国家研究基金会;
关键词：
Additive; Ionic liquid; Lithium-ion battery; Solid electrolyte interphase; THERMAL-STABILITY; NATURAL GRAPHITE; LITHIUM; ANODE; BATTERIES; SURFACE; SOLVENTS; CATHODES; SULTONE; LIXCOO2;
D O I：
10.1016/j.electacta.2012.05.161
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
The cycling behavior of Li4Ti5O12/LiCoO2 cells in the ionic liquid electrolytes based on 1-butyl-1-methylpyrrolidinium bis(trifluoromethanesulfonyl) imide (BMP-TESI) with different additives, such as vinylene carbonate (VC), 1,3-propane sultone (PS) and their mixture is investigated. The cell assembled with BMP-TESI containing 10 wt% VC/PS (1:1 by weight) exhibits reversible cycling behavior with good capacity retention. FTIR studies reveal that the electrochemically stable solid electrolyte interphase forms on Li4Ti5O12 electrode in the presence of a mixture of VC and PS during cycling. The additives hardly affect the composition, thickness and stability of the surface film formed on the LiCoO2 cathode. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：11 / 16
页数：6
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