ION CONDUCTION IN MACROPOROUS POLYETHYLENE FILM DOPED WITH ELECTROLYTES

Citation
Jmg. Cowie et Gh. Spence, ION CONDUCTION IN MACROPOROUS POLYETHYLENE FILM DOPED WITH ELECTROLYTES, Solid state ionics, 109(1-2), 1998, pp. 139-144
Citations number
15
Categorie Soggetti
Physics, Condensed Matter","Chemistry Physical
Journal title
ISSN journal
01672738
Volume
109
Issue
1-2
Year of publication
1998
Pages
139 - 144
Database
ISI
SICI code
0167-2738(1998)109:1-2<139:ICIMPF>2.0.ZU;2-3
Abstract
Macroporous, low density polyethylene films have been used as support systems for polyethylene glycol (PEG) and propylene carbonate (PC)-lit hium triflate mixtures. It has been shown that the optimum loading of (electrolyte + salt)/PE of 5.75/1 (w/w) gave conductivities in the ran ge 3 x 10(-4) to 3 x 10(-5) S cm(-1) between 20 degrees C and 80 degre es C and that these values are better than comparable solvent free pol ymer electrolytes at ambient temperatures. Plots of log conductivity a gainst reciprocal temperature for various [Li+]/[O] ratios obeyed the Arrhenius equation and the temperature dependence of conductivity was lower in the PC system when compared with the PEG-containing films. Th e systems are simple to prepare, are versatile and strong, and are lea k-free at ambient temperatures. These features make them possible comp etitors for solvent-free polymer electrolytes. (C) 1998 Elsevier Scien ce B.V. All rights reserved.