A highly-concentrated PEC-based hybrid electrolyte membrane with polyimide matrix was prepared.
The hybrid electrolyte membrane shows a conductivity of the order of 10− 5 S cm− 1 at 30 °C.
An all-solid-state Li | PEC-LiFSI | LiFePO4 cell operates at 30 °C showing a specific capacity of 120–130 mAh g− 1 at C/20 rate.