▎ 摘　　要

NOVELTY - Preparation of honeycomb-shaped three-dimensional comprises ultrasonic mixing graphite oxide and polystyrene microsphere, and hydrothermally reacting; adding weak base and hydrazine hydrate, and mixing; adding strong base and toluene, and removing polystyrene microspheres; and high temperature activating. USE - Method for preparing honeycomb-shaped three-dimensional graphene (claimed) used for conductive composite material, battery and electrochemical sensor. ADVANTAGE - The method is simple at low cost. The graphene has high specific surface area, high conductivity and strong hydrophilicity.