| 摘要 |
PURPOSE: A polyalkylene oxide-based polymer electrolyte composition is provided, to improve the stability at the interface between a lithium metal and an electrolyte during charge/discharge and the efficiency of lithium charge/discharge. CONSTITUTION: The composition comprises 3-30 wt% of a lithium salt; 0.1-80 wt% of a crosslinking agent represented by the formula 1; 0.01-20 wt% of at least one lithium surface stabilizer selected from the compounds represented by CiF(2i+1)CjH2j-Q1-(CH2CH2O)k-CjH2j-Q2-R9 (wherein Q1 and Q2 are -O-, -OC(O)O-, OC(O)- or -C(O)O-, respectively; R9 is H or a linear or branched perfluorinated alkyl group of C1-C10; i and k are integer of 1-20, respectively; and j is an integer of 0-5) or D-£-W| l (wherein l is an integer of 1-8); 0.1-90 wt% of at least one plasticizer selected from nonaqueous polar solvents; and 0.5-5 wt% of a curable initiator. In the formula 1, X is -C(-)X1-, -CX1X2-, -SO2-, -P(-)O- or -P(-)O-Ph (wherein X1 and X2 are a linear or branched alkyl or haloalkyl group of C1-C10, respectively); R is a linear or branched alkyl group of C1-C10; R1, R2, R3, R4, R5, R6 and R7 are H or CH3, respectively; R8 is a linear or branched alkyl group of C1-C10; j is 2 or 3; and p, q and r are an integer of 0-20, respectively. |
