Nonflammable perfluoropolyether-based electrolytes for lithium batteries

被引：188
|
作者：
Wong, Dominica H. C. [1 ]
Thelen, Jacob L. [2 ]
Fu, Yanbao [3 ]
Devaux, Didier [3 ]
Pandya, Ashish A. [1 ]
Battaglia, Vincent S. [3 ]
Balsara, Nitash P. [2 ,3 ,4 ]
DeSimone, Joseph M. [1 ,5 ]
机构：
[1] Univ N Carolina, Dept Chem, Chapel Hill, NC 27599 USA
[2] Univ Calif Berkeley, Dept Chem Engn, Berkeley, CA 94720 USA
[3] Univ Calif Berkeley, Environm Energy Technol Div, Berkeley, CA 94720 USA
[4] Univ Calif Berkeley, Div Mat Sci, Berkeley, CA 94720 USA
[5] N Carolina State Univ, Dept Chem & Biomol Engn, Raleigh, NC 27695 USA
来源：
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA | 2014年 / 111卷 / 09期
基金：
美国国家科学基金会; 加拿大自然科学与工程研究理事会;
关键词：
fluorinated polymers; nonflammable electrolytes; POLYMER ELECTROLYTES; IONIC-LIQUID; TRANSPORT-PROPERTIES; MOLECULAR-WEIGHT; CONDUCTIVITY; CHALLENGES; HYDROFLUOROETHER;
D O I：
10.1073/pnas.1314615111
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
The flammability of conventional alkyl carbonate electrolytes hinders the integration of large-scale lithium-ion batteries in transportation and grid storage applications. In this study, we have prepared a unique nonflammable electrolyte composed of low molecular weight perfluoropolyethers and bis(trifluoromethane)sulfonimide lithium salt. These electrolytes exhibit thermal stability beyond 200 degrees C and a remarkably high transference number of at least 0.91 (more than double that of conventional electrolytes). Li/LiNi1/3Co1/3Mn1/3O2 cells made with this electrolyte show good performance in galvanostatic cycling, confirming their potential as rechargeable lithium batteries with enhanced safety and longevity.
引用
收藏
页码：3327 / 3331
页数：5
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