Study on a novelpoly(ionic liquid)/poly(ethylene oxide)solid electrolyte for stable high-performance lithium metal battery
Solid polymer electrolytes(SPEs)have received increasing attention due to their unique safety proper-ties.In this paper,a novel SPE(PIL@PEO SPE)was prepared by introducing poly(ionic liquid)(PIL)using poly(ethylene oxide)(PEO)as the matrix.By interspersing PIL in PEO chain segments,the crystallinity of PEO was effectively reduced,and the ionic conductivity of SPE was improved(6.63 × 10-4 S/cm).The solid-state battery prepared showed a high first discharge capacity of 147.6 mAh/g for Li/LiFePO4 cells at 0.5C,60 ℃,and the capacity retention remained above 90％after up to 300 turns of charge/discharge cycles.
solid polymer electrolytespolyionic liquidspolyethylene oxidelithium ion batteries
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维普
