Polyethylene-supported polyvinylidene fluoride-cellulose acetate butyrate blended polymer electrolyte for lithium ion battery

被引:67
|
作者
Liu, Jiansheng [1 ,4 ]
Li, Weishan [1 ,2 ]
Zuo, Xiaoxi [2 ]
Liu, Shengqi [3 ]
Li, Zhao [4 ]
机构
[1] S China Univ Technol, Coll Mat Sci & Engn, Guangzhou 510640, Peoples R China
[2] S China Normal Univ, Sch Chem & Environm, Guangzhou 510006, Guangdong, Peoples R China
[3] Cent S Univ, Coll Chem & Chem Engn, Changsha 410083, Peoples R China
[4] Guangzhou Tinci Mat Technol Co Ltd, Guangzhou 510760, Guangdong, Peoples R China
基金
中国国家自然科学基金;
关键词
Blended polymer; Polyvinylidene fluoride-cellulose acetate butyrate; Polyethylene-supported; Lithium ion battery; GEL; PVDF; MEMBRANE; PERFORMANCE; SEPARATOR; PEO;
D O I
10.1016/j.jpowsour.2012.10.078
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The polyethylene (PE)-supported polymer membranes based on the blended polyvinylidene fluoride (PVDF) and cellulose acetate butyrate (CAB) are prepared for gel polymer electrolyte (GPE) of lithium ion battery. The performances of the prepared membranes and the resulting GPEs are investigated by scanning electron microscopy, electrochemical impedance spectroscopy, linear potential sweep, and charge-discharge test. The effect of the ratio of PVDF to CAB on the performance of the prepared membranes is considered. It is found that the GPE based on the blended polymer with PVDF:CAB = 2:1 (in weight) has the largest ionic conductivity (2.48 x 10(-3) S cm(-1)) and shows good compatibility with anode and cathode of lithium ion battery. The LiCoO2/graphite battery using this GPE exhibits superior cyclic stability at room temperature, storage performance at elevated temperature, and rate performance. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码:101 / 106
页数:6
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