Composition for preparing gel polymer electrolyte, gel polymer electrolyte, and lithium metal secondary battery comprising same

There is provided a composition for preparing a gel polymer electrolyte, comprising a mixture of LiPF6, LiTFSI, and LiDFOB; a solvent system comprising a fluorinated cyclic carbonate solvent and a linear carbonate solvent; a (meth) acrylate monomer; and a polymerization initiator. Also provided are a gel polymer electrolyte formed by in situ polymerization of the composition, and a lithium metal secondary battery comprising the gel polymer electrolyte. 提供了一种用于制备凝胶聚合物电解质的组合物，其包括LiPF6、LiTFSI和LiDFOB的混合物；包含氟化环状碳酸酯溶剂和直链碳酸酯溶剂的溶剂体系；(甲基)丙烯酸酯单体；和聚合引发剂。还提供了通过所述组合物的原位聚合形成的凝胶聚合物电解质以及包含该凝胶聚合物电解质的锂金属二次电池。