▎ 摘　　要

NOVELTY - The method involves mixing amorphous nano-tin alloy granule with tin alloy/graphene nano-composite material. Stone graphene powder is added with amorphous nano-tin alloy granule. Soluble salt or tin alloy ester is mixed with water and alcohol. Oxygen and carbon dioxide are removed from inert gas atmosphere. Tin alloy/graphene is coated on nano-composite material surface according to room temperature. USE - Tin alloy oxide/graphene nano-composite material preparation method. ADVANTAGE - The method enables increasing productivity, avoiding pollution of reaction process, simplifying process and increasing storage capacity of a lithium ion secondary battery. DESCRIPTION OF DRAWING(S) - The drawing shows a graph illustrating a tin alloy oxide/graphene nano-composite material preparation process.'(Drawing includes non-English language text)'