Blending-based poly(vinylidene fluoride)/polymethyl methacrylate membrane for rechargeable lithium-ion batteries

被引：22
作者：
Liu, Jiuqing [1 ]
Liu, Meng [1 ]
He, Chunfeng [1 ]
Li, Jie [1 ]
Li, Qihou [1 ]
Wang, Cheng [1 ]
Xi, Yang [1 ]
机构：
[1] Cent S Univ, Sch Met & Environm, Changsha 410083, Hunan, Peoples R China
来源：
IONICS | 2019年 / 25卷 / 11期
基金：
国家重点研发计划;
关键词：
Poly(vinylidene fluoride); Polymethyl methacrylate; Gel polymer electrolyte; Lithium-ion battery; INDUCED PHASE-SEPARATION; POLYMER ELECTROLYTE MEMBRANE; ELECTROCHEMICAL PROPERTIES; MICROPOROUS MEMBRANES; MECHANICAL-PROPERTIES; COMPOSITE; PMMA; CONDUCTION; MISCIBILITY; PERFORMANCE;
D O I：
10.1007/s11581-019-03060-y
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：
A gel polymer electrolyte based on the blending membranes of poly(vinylidene fluoride) (PVDF)/polymethyl methacrylate (PMMA) has been manufactured through the non-solvent-induced phase separation (NIPS) method. Its physical and electrochemical properties are characterized, and the blending compatibility of the PVDF/PMMA polymer is demonstrated by thermodynamic analysis. The increase in PMMA content has a great effect on surface morphologies of the PVDF/PMMA blending membranes, especially in terms of PM-3 (membrane with the weight ratio of PVDF/PMMA = 6:4). The PM-3 membrane presents satisfactory ionic conductivity (2.18 mS cm(-1) at 26 degrees C), acceptable thermal stability, and superior compatibility with lithium. In addition, its cycle performance (130.7 mAh g(-1) after circulating 200 cycles at 1 C) and rate capability (133.3 mAh g(-1) at 4 C) are superior to those of the Celgard 2320 (PP/PE/PP) separator. It is indicated that the PVDF/PMMA blending membrane is promising for the fabrication of rechargeable lithium-ion battery.
引用
收藏
页码：5201 / 5211
页数：11
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