Lithium-ion batteries have the adva

Lithium-ion batteries have the advantages of large capacity, long life, no memory, etc., and are the preferred battery for global consumer electronics and the main battery for new energy vehicles. High energy density and fast charging are the inevitable trends in the development of lithium battery products. Adding conductive agent to the positive electrode material can effectively improve the performance of lithium batteries, which can greatly increase the conductivity of the positive and negative electrodes.When using lithium batteries, the main functions of graphene are twofold: one is a conductive agent and the other is a lithium intercalation material for the electrode. The above two applications compete with traditional conductive carbon / graphite. At present, there are three main forms of graphene added to lithium batteries: conductive additives, electrode composites, and used directly as negative electrode materials.The main uses in lithium batteries are:(1) As a conductive additive for positive electrodes for lithium-ion batteries, which greatly improves charge-discharge and conductivity performance(2) As a negative electrode material for lithium batteries, it can improve the theoretical specific capacity and evaluate the performance of the negative electrodes of lithium batteries.(3) Applied to the functional coating of lithium-ion batteries, an aluminum foil with graphene functional coating can effectively reduce the battery's internal resistance.(4) As a conductive paste for lithium-ion batteries, conductive graphene additives significantly improve charging and discharging as well as conductivity.