| 초록 |
For the use of Li1.3Al0.3Ti1.7(PO4)3 as a lithium fast ionic conductor (FIC) to produce the best conductivity in Li 3-2x (Al1-xTix)2(PO4)3 (x=0.55 to 1.0), Li1.3Al0.3Ti1.7(PO4)3-filled, PEO-based, composite polymer electrolytes (CPE) films were prepared by a solution-cast technique and their characteristics were investigated by several experimental techniques including X-ray diffraction (XRD), infrared (IR) spectra, differential scanning calorimetry (DSC) and scanning electron microscopy (SEM). As measured by electrochemical impedance spectrum (EIS) measurement, the temperature-dependent ionic conductivity of PEO-Li1.3Al0.3Ti1.7(PO4)3 film with EO/Li=16 was maximized at 2.631×10-6 S/cm at room temperature and at 1.185×10-4 S/cm at 343 K, while the ionic conductivity of the PEO-LiClO4-Li1.3Al0.3Ti1.7(PO4)3 film with EO/Li=8 was maximized 7.985×10-6 S/cm at room temperature and at 1.161×10-3 S/cm at 373K when Li1.3Al0.3Ti1.7(PO4)3 content was 15 wt.%. |
