| 초록 |
A rigid bisphenol-A epoxy resin (DGEBA) was known as a material that has a high thermal and mechanical stability, so that this material has been used widely as a mechanical framework for the development of solid polymer electrolytes (SPEs). In this study, we functionalized the epoxy-based SPEs with poly(ethylene glycol)diglycidyl ether (PEGDE) and electrolyte mixture of lithium salt and ionic liquid [1-butyl-3 methylimidazolium bis(trifluorosulfonyl)imide], in order to develop high ionic conducting, flexible and mechanically stable SPEs. Their mechanical properties could be controlled by varying the ratio of PEGDE and electrolyte. The highest conductivity (~2.36 x 10-3 S/cm) and Young’s modulus (1.15 MPa) were achieved for the epoxy-based SPE with the ratio of epoxy to PEGDE (1 to 0.25) and 70 wt% ionic liquid content. |
