The application of graphene in lithium battery electrode materials advantage is what?

Source: 2020 - 04 - 04 16:01 hits: graphene in the application of lithium battery electrode materials of lithium batteries to get a better development, want to breakthrough innovation in the future, solve the problems facing now, so the best way is from the lithium battery materials, graphene is now in the lithium battery materials research is more of a new type of material, the research in recent years is not a few, graphene has good conductivity and nature than if it can be used in lithium ion battery cathode materials, you can improve a lot of problems, greatly improve the capacity and discharge performance of cathode materials, so why not use? There is no reason to miss, is it? Graphene graphene material, different material and the spring of pure graphene cycle coulomb efficiency is low, high charge and discharge platform and cycle stability is poorer, the most important thing is not to replace the current commercial carbon material, that is not directly used for lithium ion battery cathode materials, but graphene as base material, and is a very good materials, electrode materials in lithium ion batteries play a bigger role, make graphene and pure natural graphite and carbon nanotubes and fullerene and carbon material, through the graphene special layer structure, change the nature of the material and electronic transmission. At the same time, after mixing the graphene layer spacing increases, for lithium storage provides more space. In addition, graphene can also be used to modify other non carbon negative electrode material. But the disadvantage is that in the process of embedding in lithium/lithium off great changing volume expansion and contraction. When used alone, graphene doped composite material can improve the disadvantage of two materials.