Poly(vinylidene fluoride)-based macroporous separators for supercapacitors

被引:55
|
作者
Karabelli, D. [1 ]
Lepretre, J-C [1 ]
Alloin, F. [1 ]
Sanchez, J-Y [1 ]
机构
[1] Univ Grenoble 1, Grenoble INP, Univ Savoie, LEPMI,CNRS,UMR 5279, F-38402 St Martin Dheres, France
关键词
PVdF; PVdF-HFP; Macroporous separator; Phase inversion; Supercapacitor; LITHIUM-ION BATTERIES; POLYMER ELECTROLYTES; PHASE-SEPARATION; MEMBRANES; GEL; CONDUCTIVITY; POLYANILINE; SOLVENT;
D O I
10.1016/j.electacta.2011.03.033
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
Macroporous polymer separators based on poly(vinylidene fluoride) (PVdF) and several VdF copolymers were prepared by a phase inversion process using acetone as a solvent. The resulting macroporous separators were characterized in terms of morphology, swelling behaviour, thermal and mechanical properties and ionic conductivity. The PVdF separator had a highly porous structure (80%) and exhibited good mechanical properties. Once filled by a molar solution of tetraethylammonium tetrafluoroborate (TEABF(4)) in acetonitrile (AN) it provided enhanced conductivity (18 mS cm(-1) at 25 degrees C) compared with commercial cellulose and Celgard (TM) separators. (C) 2011 Elsevier Ltd. All rights reserved.
引用
收藏
页码:98 / 103
页数:6
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