| 초록 |
In Li-ion batteries, a solid polymer electrolyte (SPE) having good mechanical properties is an effective way to solve safety issues that have been observed in conventional liquid electrolytes. Poly(ethylene oxide) is one of the well-known matrices used in SPEs, because ethylene oxides in the PEO amorphous region can coordinate with Li+. However, the PEO-based SPEs have been observed with low ion conductivity (＜10-5 S/cm), because of their high crystallinity that limits the ion transport. To solve this problem, many studies have been reported to change SPE morphology, develop a gel polymer electrolyte (GPE), and add plasticizers or fillers into SPE. In this study, we incorporate high ion-conducting ionic liquids (ILs) and mechanically robust vinyl mesoporous silica nanoparticles (VMSNs) into the PEO matrix. GPE demonstrate that increasing VMSN content leads to an increase in mechanical properties without sacrificing conductivity. |
