▎ 摘　　要

NOVELTY - A composite conductive agent comprises graphene and carbon nanotubes, which are connected by a chemical bond. USE - Composite conductive agent for an electrode material of a lithium ion battery (all claimed). ADVANTAGE - The conductive agent can be prepared in simple and easy manner, realizes the chemical bond connection between graphene and carbon nanotubes, makes the conductive agent doped with nitrogen atoms through NHS treatment, improves the electron transfer rate inside the electrode and enhances the conductivity. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a method for preparing a composite conductive agent, which involves mixing the graphene oxide dispersion liquid and the carbon oxide nanotube dispersion liquid, subjecting to a crosslinking treatment and reducing to obtain the composite conductive agent.