Vinylidenefluoride-hexafluoropropylene copolymers as hybrid electrolyte components for lithium batteries

被引:41
作者
Arcella, V
Sanguineti, A
Quartarone, E
Mustarelli, P
机构
[1] Ausimont, Bollate, Italy
[2] Univ Pavia, CNR, CSTE, I-27100 Pavia, Italy
[3] Univ Pavia, Dept Chem Phys, I-27100 Pavia, Italy
关键词
poly(vinylidenefluoride); hybrid electrolytes; conductivity; lithium batteries;
D O I
10.1016/S0378-7753(99)00241-4
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
Hybrid polymer electrolytes based on P(VdF-HFP) copolymers exhibit high ionic conductivity and fair mechanical performances. Two preparation methods are tested in order to optimise the properties of P(VdF-4.5 mol% HFP)-based matrices, activated by different concentrations of a 1.5 M solution of LiN(CF3SO2)(2) in an EC/PC mixture: (1) the extraction/absorption procedure; (2) the conventional solvent casting. Conductivity values exceeding 10(-4) Omega(-1) cm(-1) are found in samples containing 60 wt.% of electrolyte solution. In general, the films obtained by casting show a lower conductivity than the samples prepared by the extraction/absorption method, and such a difference decreases when the electrolyte fraction increases. (C) 1999 Elsevier Science S.A. All rights reserved.
引用
收藏
页码:790 / 794
页数:5
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