Ionic Liquid-Based Membranes as Electrolytes for Advanced Lithium Polymer Batteries

被引：69
|
作者：
Navarra, M. A. [1 ]
Manzi, J. [1 ]
Lombardo, L. [1 ]
Panero, S. [1 ]
Scrosati, Bruno [1 ]
机构：
[1] Univ Roma La Sapienza, Dept Chem, I-00185 Rome, Italy
来源：
CHEMSUSCHEM | 2011年 / 4卷 / 01期
关键词：
lithium batteries; ionic liquids; polymer membranes; GEL ELECTROLYTES; CHALLENGES; LI;
D O I：
10.1002/cssc.201000254
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Gel-type polymer electrolytes are formed by immobilizing a solution of lithium N,N-bis(trifluoromethanesulfonyl) imide (LiTFSI) in N-n-butyl-N-ethylpyrrolidinium N, N-bis(trifluoromethanesulfonyl) imide (Py24TFSI) ionic liquid (IL) with added mixtures of organic solvents, such as ethylene, propylene and dimethyl carbonates (EC, PC, and DMC, respectively), into a poly(vinylidenefluoride-co-hexafluoropropylene) (PVdF-HFP) matrix, and their properties investigated. The addition of the organic solvent mixtures results in an improvement of the ionic conductivity and in the stabilization of the interface with the lithium electrode. Conductivity values in the range of 10(-3)-10(-2) S cm(-1) are obtained in a wide temperature range. These unique properties allow the effective use of these membranes as electrolytes for the development of advanced polymer batteries based on a lithium metal anode and an olivine-type lithium iron phosphate cathode.
引用
收藏
页码：125 / 130
页数：6
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