Properties of N-butyl-N-methyl-pyrrolidinium Bis(trifluoromethanesulfonyl) Imide Based Electrolytes as a Function of Lithium Bis(trifluoromethanesulfonyl) Imide Doping

被引：12
|
作者：
Kim, Jae-Kwang [1 ]
Lim, Du-Hyun [2 ]
Scheers, Johan [1 ]
Pitawala, Jagath [1 ]
Wilken, Susanne [1 ]
Johansson, Patrik [1 ]
Ahn, Jou-Hyeon [2 ]
Matic, Aleksandar [1 ]
Jacobsson, Per [1 ]
机构：
[1] Chalmers Univ Technol, Dept Appl Phys, S-41296 Gothenburg, Sweden
[2] Gyeongsang Natl Univ, Dept Chem & Biol Engn, Jinju 660701, South Korea
来源：
JOURNAL OF THE KOREAN ELECTROCHEMICAL SOCIETY | 2011年 / 14卷 / 02期
关键词：
Ionic liquid electrolyte; LiTFSI doping; Li-ion coordination; Electrochemical stability;
D O I：
10.5229/JKES.2011.14.2.092
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
In this study we have investigated the Li-ion coordination, thermal behavior and electrochemical stability of N-butyl-N-methyl-pyrrolidinium bis(trifluoromethanesulfonyl) imide (Py14TFSI) with lithium bis(trifluoromethanesulfony) imide (LiTFSI) doping intended for use as electrolytes for lithium batteries. The ionic conductivity is reduced and glass transition temperature (T-g) increases with LiTFSI doping concentration. Also, the electrochemical stability increases with LiTFSI doping. A high LiTFSI doping could enhance the electrochemical stability of electrolytes for lithium batteries, whereas the decrease in the ionic conductivity limits the capacity of the battery.
引用
收藏
页码：92 / 97
页数：6
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