. The effect of the liquid electrolyte on the ionic conductivity of the prepared ceramic-polymer electrolyte was investigated
using electrochemical 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, respectively. 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.