of Li1.3Ti1.7Al0.3(PO4)3 (LTAPO) ceramic powder, polytetrafluoroethylene (PTFE) polymer and 1 M
LiPF6 in EC/DMC
liquid electrolyte. The morphologies of the LTAPO, LTAPO–PTFE composite membrane, and
LTAPO–PTFE–LiPF6–EC/ DMC composite electrolyte were analyzed using a scanning electron microscopy
(SEM). The effect of the liquid elec- trolyte on the ionic conductivity of the prepared
ceramic-polymer electrolyte was investigated using electrochem- ical impedance spectroscopy (EIS).
The room temperature ionic conductivities of the LTAPO–PTFE–LiPF6–EC/DMC composite electrolyte and
the LTAPO ceramic electrolyte exhibited 2.94 × 10−4 S/cm and 8.36 × 10−4 S/cm, respec- tively. The
first charge capacity of the LTAPO–PTFE–LiPF6–EC/DMC composite electrolyte cell reached 118 mAh/g at
0.06 mA/cm2 current density. The electrochemical performance of the ceramic-polymer-composite
electrolyte cell
was better than that of the ceramic solid electrolyte cell.