Investigations on the enhancement mechanism of inorganic filler on ionic conductivity of PEO-based composite polymer electrolyte: The case of molecular sieves |
| |
Authors: | Jingyu Xi Xiaozhen Tang |
| |
Affiliation: | School of Chemistry and Chemical Technology, Shanghai Jiao Tong University, Shanghai 200240, China |
| |
Abstract: | Polarized optical microscopy (POM) and differential scanning calorimeter (DSC) techniques are used to study the effect of ZSM-5 molecular sieves on the crystallization mechanism of poly(ethylene oxide) (PEO) in composite polymer electrolyte. POM results show that ZSM-5 has great influence on both the nucleation stage and the growth stage of PEO spherulites. ZSM-5 particles can act as the nucleus of PEO spherulites and thus increase the amount of PEO spherulites. POM and DSC results show that ZSM-5 can restrain the recrystallize tendency of PEO chains through Lewis acid-base interactions and hence decrease the growth speed of PEO spherulites. Room temperature ionic conductivity of PEO-LiClO4-based polymer electrolyte can be enhanced by more than two magnitudes during long time storage with the addition of ZSM-5. |
| |
Keywords: | Composite polymer electrolyte PEO ZSM-5 Spherulites Ionic conductivity |
本文献已被 ScienceDirect 等数据库收录! |