Polymer electrolyte and preparation method and application thereof

The present invention provides a polymer electrolyte and a preparation method and application thereof, the polymer electrolyte comprises a polymer and a lithium salt, the polymer comprises a cross-linked body obtained by copolymerization of a compound represented by # imgabs 0 # and a compound represented by # imgabs 1 #, and in the formula I, m is an integer selected from 2-20; in the formula II, R is selected from bis (trifluoromethylsulfonyl) imide radical, bis (fluorosulfonyl) imide radical, perchlorate radical, tetrafluoroborate radical, bis (oxalato) borate radical, difluoro (oxalato) borate radical or trifluoromethanesulfonate radical, and n is selected from an integer between 1 and 10. The polymer electrolyte has excellent ionic conductivity, lithium ion transference number and mechanical strength. 本发明提供一种聚合物电解质及其制备方法和应用，其中，聚合物电解质包括聚合物和锂盐，所述聚合物包括#imgabs0#所示化合物和#imgabs1#所示化合物共聚后得到的交联体，式I中，m为选自2~20之间的整数；式II中，R选自双三氟甲基磺酰亚胺根、双氟磺酰亚胺根、高氯酸根、四氟硼酸根、二草酸硼酸根、二氟草酸硼酸根或三氟甲基磺酸根，n选自1~10之间的整数。本发明的聚合物电解质兼具优异的离子电导率、锂离子迁移数