| 초록 |
With an increase in demand for energy storage devices, the development of solid electrolyte for advanced lithium batteries is currently highly desirable since there exist some safety issues with the conventional liquid electrolytes. Solid electrolyte membranes composed of polyurethane, poly(ethylene oxide) (PEO), lithium bis(trifluoromethane sulfonimide) (LiTFSI) and lithium aluminum germanium phosphate(LAGP) are prepared and investigated in this work. Poly-carbonatediol and HDI were used to successfully synthesize tailor-ade polyurethane polymer through the propolymer method. As prepared hybrid solid electrolyte membranes showed better machanical property, ion-conductivity and electrochemical stability at 60 °C. For the full cell test, composite cathodes were fabricated, and lithium metal was used as an anode. These experiments showed that polyurethane/poly(ethylene-oxide) based hybrid solid electrolyte are worth enough for consideration as a candidate for all-solid-state batteries. |
