Abstract:

Glycerol carbonate was synthesized by the transesterification of glycerol with dimethyl carbonate in the presence of calcium oxide as catalyst. The liquid
 electrolyte was composed of lithium perchlorate (LiClO4) as solute and glycerol carbonate as solvent. The ionic conductivity of the electrolyte with 0.75 mol
/L LiClO4 in GC was 3.34 mS/cm. As a plasticizer, the electrolyte was used to prepare poly (acrylonitrilemethyl methacrylate)（P(ANMMA)) based gel electrolyte. The gel electrolyte was obtained by putting the P(ANMMA) membrane in the liquid electrolyte. The gelled membrane sucked with 75% of the liquid electrolyte vs the dried membrane presented an ionic conductivity of 094 mS/cm at room temperature. When the gel electrolyte applied to the electrochromic devices (ECD) with the configuration glass/FTO/WO₃/electrolyte/CeO₂TiO₂/FTO/glass, the transmittance change of the ECD reached 20% at 550 nm and the coloration efficiency of the ECD was 6.89 cm²/C.

Key words: glycerol carbonate, gel electrolyte, electrchromism, Li-ion battery