Polymer electrolyte, method of preparing the polymer electrolyte, and lithium metal battery including the same

A polymer electrolyte comprising a polymerization product of:

• a polymer comprising an unsaturated functional group at a terminal thereof and a fluoroalkylene chain, and
• an ion-conductive polymer comprising an unsaturated functional group at a terminal thereof,
• wherein the ion-conductive polymer comprising an unsaturated functional group at a terminal thereof is a polymer represented by Formula 1 or Formula 2, and
• wherein the polymer having an unsaturated functional group at a terminal thereof and a fluoroalkylene chain is a compound represented by Formula 3:
• wherein, in Formula 1,
• R1 and R2 are each independently a hydrogen or a C1-C5 alkyl group, and L is one selected from groups represented by Formula 1a,
• wherein, in Formula 1a,
• R1 is a C1-C5 alkylene group,
• R2 and R3 are each independently a C1-C5 alkyl group,
• a is an integer from 1 to 10,
• k is an integer from 1 to 10,
• l is an integer from 1 to 10, and
• * denotes a binding site to a neighboring atom,
• wherein, in Formula 2,
• R1 is a hydrogen or a C1-C5 alkyl group, and
• L′ is one selected from groups represented by Formula 2a,
• wherein, in Formula 2a,
• a is an integer from 1 to 10,
• R1 is a C1-C5 alkylene group,
• R0 and R2 to R6 are each independently a C1-C10 alkyl group, a C6-C10 aryl group, or a C1-C10 heteroaryl group,
• k is an integer from 1 to 10,
• l is an integer from 1 to 10, and
• * denotes a binding site to a neighboring atom,
• wherein, in Formula 3,
• L1 and L3 are each independently a bond or —C(═O)O—R—NH—, wherein R is a divalent, trivalent or tetravalent group and selected from a C1-C20 aliphatic hydrocarbon group, a C5-C40 cycloaliphatic group, a C5-C40 cycloaliphatic urethane group, a C6-C40 aryl group, and a C2-C40 heteroaryl group,
• A1 and A2 are each independently a bond or a divalent, trivalent or tetravalent bonding group,
• L2 is a fluoropolyalkylene oxide chain or a perfluoropolyalkylene oxide chain,
• R1 and R2 are each independently a hydrogen or a C1-C5 alkyl group, and
• n and m are each independently an integer from 1 to 3.