▎ 摘　　要

NOVELTY - Separator coating layer comprises a fluorinated graphene oxide (FGO) material. USE - Separator coating layer for a lithium metal battery. ADVANTAGE - The separator coating layer prevent growth of dendrites of the lithium metal negative electrode by allowing lithium fluoride to be formed on the surface of the separator during use of the lithium metal battery, and improve energy density and stability of the lithium metal battery compared to using a conventional ceramic material as a coating layer and thus greatly contribute to commercialization of the lithium metal battery. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: 1. a method for making a separator coating layer for a lithium metal battery which involves preparing a fluorinated graphene oxide; and 2. a separator for a lithium metal battery in which a coating layer comprising a fluorinated graphene oxide material is coated on a surface of the separator.