Macroporous, low density polyethylene films have been used as support systems for polyethylene glycol (PEG) and propylene carbonate (PC)-lithium triflate mixtures. It has been shown that the optimum loading of (electrolyte + salt)/PE of 5.75/1 (w/w) gave conductivities in the range 3 × 10-4 to 3 × 10-5 S cm-1 between 20°C and 80°C and that these values are better than comparable solvent free polymer electrolytes at ambient temperatures. Plots of log conductivity against 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. The systems are simple to prepare, are versatile and strong, and are leak-free at ambient temperatures. These features make them possible competitors for solvent-free polymer electrolytes. © 1998 Elsevier Science B.V. All rights reserved.
|Number of pages||6|
|Journal||Solid State Ionics|
|Publication status||Published - 1 Jun 1998|
- Polyethylene films