▎ 摘　　要

NOVELTY - The battery has a cathode material that is graphene material prepared by low-temperature method, and a cathode electrode plate made by pressing the graphene material in a copper foil current collector. The electrode plate comprises an anode electrode plate and the cathode electrode plate. The anode electrode plate is made by pressing the active material comprising lithium on the copper foil current collector. An electrolyte of the battery is a lithium ion battery hexafluorophosphoric acid lithium electrolyte. USE - Lithium ion battery. ADVANTAGE - The discharge capacity of the lithium ion battery of the graphene cathode material can reach 380 to 450 milliamphere hour/gram. The discharge efficiency can reach 40 to 90 percent after 20 cycles. The preparation process of the graphene material is simple, and is easy to execute. The processing cost is low. The discharge capacity of the lithium ion battery with graphene material as cathode material is high, and the cycle property is better.