▎ 摘　　要

NOVELTY - Preparing nitrogen-doped graphene involves performing activation treatment on graphene to obtain activated graphene; performing halogenation reaction on activated graphene, halogenating agent and catalyst to obtain halogenated graphene; reacting halogenated graphene with nitrogen displacer to obtain nitrogen-doped graphene. USE - Method for preparing nitrogen-doped graphene used as conductive material for lithium ion batteries (claimed). ADVANTAGE - The method for preparing nitrogen-doped graphene is simple and easy to implement, has mild process conditions, and effectively control carbon-nitrogen bonds of nitrogen-doped graphene, generates more pyridine nitrogen, and is beneficial to adjust electronic energy band structure of graphene, where nitrogen doping amount is controlled, which is suitable for large-scale production.