▎ 摘　　要

NOVELTY - A nickel-tin alloy-based nanosphere structure composite material comprises nanospheres with a particle size of 300-500 nm. The nanospheres are formed by self-assembling partially graphene-based carbon matrix and nickel-tin alloy-based nanoparticles embedded in the nanospheres. The particle size of the nickel-tin alloy-based nanoparticles is 10-60 nm. The graphene-based carbon matrix has 3-6 graphene layers at the interface between nanoparticles and carbon. The nickel-tin alloy-based nanoparticles are uniformly dispersed in the partially graphene-based carbon matrix. USE - The nickel-tin alloy-based nanosphere structure composite material is useful in an energy storage such as lithium electricity and sodium electricity. ADVANTAGE - The method of nickel-tin alloy-based nanosphere structure composite material has simple operation steps, short synthesis period and low cost.