Preparation method of silicon/functionalized graphene intercalation composite material with surface coupling activity

The invention discloses a preparation method of a silicon/functionalized graphene intercalation composite material with surface coupling activity, and relates to the technical field of a novel negative electrode material of a lithium ion battery. The method comprises the following steps: S100, preparing a carboxyl functionalized graphene material; S200, preparing silicon particles with surface coupling activity; S300, preparing the silicon/functionalized graphene intercalation composite material with surface coupling activity by using the graphene material and the silicon particles. According to the invention, the surfaces of both silicon and graphene have chemical activity, and the negative influence of a large number of oxygen-containing functional groups on electrochemical performance is reduced, so that the cycle life and cycle stability of the silicon/functionalized graphene intercalation composite material are improved. 本发明公开了一种具有表面偶联活性的硅/功能化石墨烯插层复合材料的制备方法，涉及锂离子电池新型负极材技术领域，所述方法包括以下步骤：S100、制备羧基功能化的石墨烯材料；