Preparation of Polymer Electrolytes Based on the Polymerized Imidazolium Ionic Liquid and Their Applications in Lithium Batteries

被引：0
作者：
Li, Mingtao [1 ]
Wang, Lu [1 ]
Du, Tingting [1 ]
机构：
[1] Xi An Jiao Tong Univ, Sch Chem Engn & Technol, Dept Chem Engn, Xian 710049, Shaanxi, Peoples R China
来源：
JOURNAL OF APPLIED POLYMER SCIENCE | 2014年 / 131卷 / 20期
基金：
中国国家自然科学基金;
关键词：
batteries and fuel cells; electrochemistry; polyelectrolytes; TEMPERATURE; MEMBRANES; CONDUCTIVITY; CATIONS;
D O I：
10.1002/APP.40928
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The polymer electrolytes based on a polymerized ionic liquid (PIL) as polymer host and containing 1,2-dimethyl-3-butyli-midazolium bis(trifluoromethanesulfonyl) imide (BMMIM-TFSI) ionic liquid, lithium TFSI salt, and nanosilica are prepared. The PIL electrolyte presents a high ionic conductivity, and it is 1.07 x 10(-3) S cm(-1) at 60 degrees C, when the BMMIM-TFSI content reaches 60% (the weight ratio of BMMIM-TFSI/PIL). Furthermore, the electrolyte exhibits wide electrochemical stability window and good lithium stripping/plating performance. Preliminary battery tests show that Li/LiFePO4 cells with the PIL electrolytes are capable to deliver above 146 mAh g 21 at 60 degrees C with very good capacity retention. (C) 2014 Wiley Periodicals, Inc.
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页数：7
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