Design of polymers with an intrinsic disordered framework for Li-ion conducting solid polymer electrolytes

•Polymers with phosphorus in the main chain for lithium-ion conductivity were synthesized.•The synthesized polymers were highly stable, solids at room temperature and completely amorphous in nature.•Phosphorus in these polymers would bring flame-retardant property to SPEs.•The SPE2 (40%) showed the highest conductivity of 8.9 × 10−4 S cm−1 at 30 °C.•The working voltage range of SPEs is in the range from 0 V to 5.3 V.

Polymers with phosphorus in the main chain with intrinsic disordered framework for lithium-ion conductivity were synthesized. Conductivity of one of the solid polymer electrolytes prepared from those polymers with 40 wt% of LiTFSI was 8.9 × 10−4 S cm−1 at 30 °C and 5.3 × 10−3 S cm−1 at 80 °C. The impressive conductivity is explained by the availability of high conduction pathways provided by frozen chain disorder.

Graphical abstractSolid polymer electrolytes having lithium-ion conductivity of 8.9 × 10−4 S cm−1 are produced (5.3 × 10−3 S cm−1 at 80 °C) and the conductivity is explained using availability of high conduction pathways provided by frozen chain disorder.Download high-res image (358KB)Download full-size image