Why do lithium battery anode materials use intercalation compounds formed from metallic lithium and

The reason why the negative electrode material of the lithium battery uses an intercalation compound formed by lithium metal and graphitized carbon is that the potential difference between LiC6 and lithium metal is as small as 0 .5 V. The voltage loss is not significant. During the charging process, lithium is inserted into the graphite layer structure and escapes from the layer structure during discharge. This process is very reversible and the secondary lithium battery system has excellent cycle performance. In addition, carbon materials are cheap, non-toxic and relatively stable in air in the discharged state, thus avoiding the formation of claws and dendrites of active lithium metal, greatly improving the service life and fundamentally solving the problems security.