▎ 摘　　要

NOVELTY - Preparing nano-copper/graphene composite material involves dissolving copper precursor, surface active agent and complexing agent in alcohol at normal temperature, and then adding graphene oxide to the mixture. The mixture is stirred to obtain mixed liquid. The mixed liquid is transferred into a reaction kettle, and then carbon dioxide is introduced into the reaction kettle. The mixture is stirred, and then the obtained material is dried in presence of vacuum to obtain nano-copper/graphene composite material. USE - Method for preparing nano-copper/graphene composite material for lubricating oil (claimed). ADVANTAGE - The method prepares nano-copper/graphene composite material that improves anti-friction and anti-wear property of the lubricating oil.