▎ 摘　　要

NOVELTY - Method for preparing a sulfur-doped lithium titanate/graphene oxide composite material, involves (a) dissolving a titanium source in a solution and stirring to obtain a titanium source solution, (b) dissolving a lithium source in deionized water and stirring to obtain a lithium salt solution, (c) adding the lithium salt solution to the titanium source solution and stirring to obtain a mixed solution, (d) adding polyvinylpyrrolidone (PVP), and graphene oxide to the mixed solution, ultrasonically dispersing, performing a hydrothermal reaction, and centrifuging and drying to obtain a lithium titanate/graphene oxide precursor, (e) sintering the precursor in a reducing atmosphere to obtain a lithium titanate/graphene oxide composite material, and mixing the composite material with a sulfur source and sintering in a reducing atmosphere to obtain a sulfur doped lithium titanate/graphene oxide composite material. USE - The method is useful for preparing a sulfur-doped lithium titanate/graphene oxide composite material, which is used as an active material for a negative electrode of a sodium ion battery (all claimed). ADVANTAGE - The sodium ion battery prepared using the composite material has high capacity.