▎ 摘　　要

NOVELTY - A composite material comprises 0.1-90 wt.% graphene and porous nanosilicon composite. USE - Composite material for use in producing silicon cathode material lithium-ion battery (claimed). ADVANTAGE - The composite material is economic and suitable for large-scale production, and overcomes low electronic conductivity problems, and has high discharge capacity, charge-discharge stability and excellent charging and discharging power characteristics, and can be produced in a simple and easily operable manner. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a method for producing the composite material, which involves adding surfactant to graphene and porous nanosilicon composite, and blending the mixture uniformly, where the surfactant is anionic surfactant, cationic surfactant or zwitterionic surfactant.