To provide the manufacturing method of a negative electrode material of a lithium ion battery easy to practice, having high cladding effect, low irreversible capacity, and stable circulation performance.
The manufacturing method of the negative electrode material of the lithium ion battery is that (1) natural graphite, a cladding material, and a solvent are mixed, the solvent is removed by evacuation, and the natural graphite is clad with raw material of the cladding material. (2) By applying thermal polymerization reaction to the clad natural graphite, a fine capsule-like cladding layer is formed on the surface of the natural graphite. (3) By carbonizing or graphitizing the product obtained by (2), a carbon negative electrode material whose surface is covered with a carbonized layer or a natural graphite layer, or the negative electrode material of the lithium ion battery can be obtained.
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| JP5386802 | Graphite powder and its manufacturing method |
WANG JIANQIAO
MA JUNQI
RI HO
ZHANG DIANHAO
HE ZHENMING
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