▎ 摘　　要

NOVELTY - The method involves processing the graphite raw material step by step to obtain graphene powder. The graphene powder is compounded with a lithium titanate negative electrode material by a sol-gel method, thus adding the obtained graphene powder to a conductive agent and homogenizing with a binder to obtain a negative electrode slurry. The lithium manganate cathode material, binder and conductive agent are homogenized to obtain cathode slurry. The negative electrode slurry is coated on the negative electrode pole element, thus coating the positive electrode slurry on the positive electrode pole element. The negative pole element and the positive pole element are rolled and cut, and assembled into the battery frame. USE - Preparation method of high-quality graphene battery such as lithium ion battery used in small digital electronic product, mixed power electric automobile, aerospace, diving and other fields. ADVANTAGE - The method provides high quality graphene battery with excellent performance in electrical, optical, and thermodynamics. The lithium titanate battery cathode conductivity difference can effectively improve the active material ratio of the battery material, more important is improving the multiplying performance and can improve the cycle performance.