Polymer membrane based on ABC type triblock co-polymer for safer lithium-ion solid-state batteries

Solid-state membranes with high ionic conductivity and good mechanical and electrochemical properties are desirable for next-generation lithium-ion batteries. In this present work, lithium-ion conducting polymer membranes based on ABC type triblock co-polymer, "poly(vinylidene chloride-co-acrylonitrile-co-methyl methacrylate)-lithium nitrate (P(VDC-co-AN-co-MMA)-LiNO3 or TBC)," have been prepared in different compositions by the solution casting technique. Ethylene carbonate has been incorporated to study its effect as a plasticizer. X-ray diffraction study confirms the decrease in crystalline nature and the plasticized membrane 20 wt.% PVDC horizontal ellipsis :80 wt.% LiNO3:0.6 wt.% ethylene carbonate (TBC-5) exhibits a high degree of amorphous nature and the same membrane has shown a low T-g value. Polymer membrane TBC-5 has shown maximum ionic conductivity of 1.12 & PLUSMN; 0.04 x 10(-2) S cm(-1) at 303 K. The TBC-5 also has shown a wide electrochemical stability window of 3.98 V. The primary lithium-ion battery constructed with TBC-5 as an electrolyte exhibits excellent stability in performing load discharge testing and LED testing.