Abstract
AbstractA kind of gel polymer electrolyte was prepared by in situ polymerization of methyl methacrylate (MMA) monomers in room temperature ionic liquid (RTIL), N‐butyl‐N′‐methylimidazolium hexafluorophosphate (BMIPF6). In comparison with other gel polymer electrolytes, it reveals excellent thermal stability over 260°C. The results of differential scanning calorimetry (DSC) measurements show that its glass transition temperature decreases with an increase in the ratio of RTIL to polymer matrix. At 25°C, the gel polymer electrolyte has 0.15 × 10−3 S cm−1 of ionic conductivity when the mass ratio of BMIPF6 to MMA monomers equals 1. Analysis of FT‐IR spectra suggests that there exists a hydrogen‐bonded interaction between BMIPF6 and poly(methyl methacrylate) (PMMA) polymer matrix in the polymer electrolyte. Copyright © 2006 John Wiley & Sons, Ltd.
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