▎ 摘　　要

NOVELTY - The material has a three-dimensional (3D) graphene provided with carbon-coated tin granule, where diameter of the carbon-coated tin granule is 5-100 nm, carbon coating thickness of the tin granule is 5 nm, thickness of the 3D graphene is 1-10 nm, radius of the 3D graphene is 1-10 nm and mass percentage of tin and carbon quantity is 0.4-0.8:0.6-0.2. USE - Three-dimensional graphene network structure based carbon-coated nickel-tin alloy material for a lithium ion battery. ADVANTAGE - The material has high safety preparation process, simple operation, large yield, high reversible capacity and high circulation stability. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for the following: (1) a 3D graphene network structure based carbon-coated nickel-tin alloy material preparation method (2) an application of a 3D graphene network structure based carbon-coated nickel-tin alloy material. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of a three-dimensional graphene network structure based carbon-coated nickel-tin alloy material.