V. Arcella et al., Vinylidenefluoride-hexafluoropropylene copolymers as hybrid electrolyte components for lithium batteries, J POWER SOU, 82, 1999, pp. 790-794
Citations number
15
Categorie Soggetti
Physical Chemistry/Chemical Physics","Environmental Engineering & Energy
Hybrid polymer electrolytes based on P(VdF-HFP) copolymers exhibit high ion
ic conductivity and fair mechanical performances. Two preparation methods a
re 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) Om
ega(-1) cm(-1) are found in samples containing 60 wt.% of electrolyte solut
ion. In general, the films obtained by casting show a lower conductivity th
an the samples prepared by the extraction/absorption method, and such a dif
ference decreases when the electrolyte fraction increases. (C) 1999 Elsevie
r Science S.A. All rights reserved.