What are the advantages of graphene as a negative electrode material for lithium batteries?

The advantages of graphene as a negative electrode material for lithium batteries 1. Graphene has a large specific surface area (2630m2/g), which can reduce the polarization of lithium batteries, thereby reducing the energy loss caused by polarization. 2. Graphene has excellent electrical and thermal conductivity, that is, it has good electron transmission channels and stability. 3. The scale of graphene sheets is on the order of micro-nano, much smaller than bulk graphite, which shortens the diffusion path of Li+ between graphene sheets; the increase of the inter-layer spacing is also conducive to the diffusion and transport of Li+. Conducive to the improvement of lithium battery power performance. The development prospects of graphene anode materials Graphene has the potential to replace graphite as a new generation of lithium battery anode materials due to its unique two-dimensional structure, excellent electron transport capability, and large specific surface area. The lithium storage mechanism of graphene is similar to that of other carbon materials. When charging, lithium ions are extracted from the positive electrode and intercalated into the carbon material layer to form Li2C6. When discharging, lithium ions are extracted back to the positive electrode. Therefore, compared to graphite, using graphene as the negative electrode is more conducive to improving battery performance. Since the concept of graphene batteries was put forward, many academic research results have shown that graphene lithium batteries have a reversible capacity of more than 500mAh/g and have excellent rate performance. At present, the main anode materials are natural graphite and artificial graphite, and these two kinds of graphite have their own advantages and disadvantages. If graphene is used as a negative electrode material for lithium batteries, independent upstream and downstream industrial chains, expensive prices and complicated processes will discourage many negative electrode material manufacturers. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete.