| 초록 |
Solid polymer electrolytes [SPEs] are alternative next-generation electrolyte for replacing traditional liquid electrolytes in Li-ion batteries. However, to apply in practical use, enhancing the ionic conductivity is essential. In order to optimize ionic conductivity and mechanical strength, we introduce nanostructure SPEs to separate the ion transport phase and non-ion transport phase, which are solidified by uv for the mechanical strength of SPEs, but both two phase coexisted. Here, we report the phase separation as a bicontinuous nanostructure SPEs [Bi-SPEs] from microemulsion solution. Small Angle X-ray Scattering [SAXS] analyzing shows a bicontinuous phase and nano scale spacing distance [d] from 36.5Å to 54.3Å along the surfactant concentration. The highest ionic conductivity and Lithium transference number [t+] with high d are evaluated as 1.4mS/cm and t+=0.56 at room temperature, while the mechanical strength is maintained as ~0.8MPa. |
