▎ 摘　　要

NOVELTY - A tin-based oxide/graphene composite material comprises nano tin-based oxide. USE - Tin-based oxide/graphene oxide composite material is used as cathode material for lithium ion battery (claimed). ADVANTAGE - The tin-based oxide/graphene oxide composite material has small particle size and cyclical stability, and is manufactured using simple process. The battery having high cycle characteristics. DETAILED DESCRIPTION - A tin-based oxide/graphene composite material comprises a nano tin-based oxide of formula: MSnO3, where M is magnesium, cobalt, calcium or zinc. An INDEPENDENT CLAIM is included for preparation of tin-based oxide/graphene composite material, which involves using alkali agent and organic solvent in inert atmosphere.