▎ 摘　　要

NOVELTY - Ball milling preparation of graphene comprises taking commercially available graphite and dry ice products in a mass ratio of 10:1-1:10, mixing, introducing into a ball milling tank, sealing, milling at 100-1000 revolutions/minute for 5-72 hours to obtain graphene oxide, and carrying out heat treatment at 200-1000 degrees C to obtain graphene product. USE - The graphene is useful in power battery, conductive ink, lubricant and anti-corrosion coating (claimed). ADVANTAGE - The graphene has adsorption property (claimed) and is environmentally friendly.