Nonflammable and thermally stable gel polymer electrolytes based on crosslinked perfluoropolyether (PFPE) network for lithium battery applications

被引：12
作者：
Baik, Ji-Hoon [1 ,2 ]
Kim, Dong-Gyun [3 ,4 ]
Lee, Jin Hong [1 ,2 ]
Kim, Sangwan [1 ,2 ]
Hong, Dong Gi [1 ,2 ]
Lee, Jong-Chan [1 ,2 ]
机构：
[1] Seoul Natl Univ, Sch Chem & Biol Engn, 1 Gwanak Ro, Seoul 08826, South Korea
[2] Seoul Natl Univ, Inst Chem Proc, 1 Gwanak Ro, Seoul 08826, South Korea
[3] Korea Res Inst Chem Technol, Adv Mat Div, 141 Gajeong Ro, Daejeon 34114, South Korea
[4] Univ Sci & Technol, Chem Convergence Mat & Proc, 217 Gajeong Ro, Daejeon 34114, South Korea
来源：
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY | 2018年 / 64卷
基金：
新加坡国家研究基金会;
关键词：
Perfluoropolyether; Nonflammable electrolytes; Gel polymer electrolytes; Lithium batteries; BLOCK-COPOLYMER ELECTROLYTES; ION BATTERIES; POLY(ETHYLENE GLYCOL); LIQUID; CONDUCTIVITY; TRANSPORT; POSS; CHALLENGES; MOIETIES; BEHAVIOR;
D O I：
10.1016/j.jiec.2018.04.006
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A gel polymer electrolyte (FGPE) based on a perfluoropolyether (PFPE) crosslinker and liquid state PFPE doped with lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) is prepared, and its characteristics including ionic conductivities, Li+ transference numbers, and thermal/electrochemical stabilities are investigated. A commercial PFPE-dimethacrylate, Fluorolink MD700 (R), is found to be a suitable crosslinker for the FGPE preparation due to its good miscibility with the PFPE/LiTFSI electrolytes. The ionic conductivity and Li+ transference number of the FGPE at 60 degrees C are 1.72 x 10(-5) S cm(-1), and 0.53, respectively. The FGPE is nonflammable, thermally stable up to 175 degrees C without any weight loss, and has a wide electrochemical stability window (similar to 5.0V vs. Li/Li+). Therefore, the FGPE is expected to be a promising electrolyte candidate for safety-reinforced high-temperature lithium batteries. (C) 2018 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
引用
收藏
页码：453 / 460
页数：8
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