Ionic conductivity of solid-liquid composite films consisting of mesoporous SiO2 and li solution electrolyte

Abstract

A solid-liquid composite electrolyte was synthesized by impregnating a liquid lithium electrolyte into a silica mesoporous thin film. Silica mesoporous thin films were prepared by a self-assemble method using different surfactants as the template, and a lithium liquid electrolyte was impregnated into the mesopores of the films by vacuum impregnation. The ionic conductivity of the composite electrolyte was mainly influenced by pore diameter and the presence of surfactants in the mesopores of the films. The highest conductivity of 2.0 × 10-3 S/cm was obtained in the film prepared using Pluronic F127 as a template, with surfactant-free largest mesopores.