Polymer and preparation method therefor, gel polymer electrolyte, battery, and electrical device

A polymer, having a general formula as shown in formula I:

• wherein m comprises 0 and/or 1;
• n is a positive integer;
• X1 and X2 each independently comprise oxygen, sulfur or imino;
• X3 comprises oxygen or sulfur;
• Y comprises any one of oxygen, sulfur, imino, —S—C1-8 alkylene unsubstituted or substituted with any group, —NH—C1-8 alkylene unsubstituted or substituted with any group, C1-8 alkylene unsubstituted or substituted with any group, and C1-8 alkoxylene unsubstituted or substituted with any group;
• R1, R2, R3, and R4 each independently comprise any one of hydrogen, fluorine, C1-10 alkyl unsubstituted or substituted with any group, and C1-10 alkoxyl unsubstituted or substituted with any group;
• R5 comprises any one of C1-10 alkyl unsubstituted or substituted with any group and
• and R9 comprises C1-10 alkyl unsubstituted or substituted with any group;
• and the any group comprises at least one of halogen, alkyl, alkoxyl, an ester group, and carbonyl.