Briefly describe the application of graphene lithium-ion batteries in cathode materials

Lithium battery cathode materials such as commonly used LiCoO2, LiMn2O4 and LiFePO4 are poor electronic conductors, and their electrical conductivity is 10-4, 10-6 and 10-9 Scm-1, respectively. In the current existing lithium battery system, the positive and negative electrode materials used in the battery have low ion and electronic conductivity, which is an important factor that affects and limits the charge-discharge cycle and rate performance of the lithium battery. Therefore, in order to make full and effective use of the positive electrode material in the charge and discharge process and improve the rate performance of the lithium battery, it is necessary to add a conductive agent to the positive electrode material. The traditional conductive agent is generally graphite. Graphene itself has very high electronic conductivity. Using graphene as a conductive additive is the straightest and most widely used in lithium batteries. Graphene ternary cathode materials and conductive pastes are the core materials of power lithium-ion batteries, which are directly related to the performance of power lithium-ion batteries. Graphene modified ternary materials are clearly superior to traditional ternary materials in terms of rate performance and cycle stability, and can greatly increase the cruising range of new energy vehicles. The production of ternary cathode materials will greatly improve the rate performance of lithium batteries, reduce the internal resistance of lithium batteries, and solve the bottleneck problem of short battery life from the material, which can meet the urgent needs of domestic and international power automobile lithium batteries. Scale demand. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: Analysis of common faults and solutions of power lithium-ion batteries