Preparation of Anode Material for Lithium Ion Battery by Chemical Oxidation

Anode material for lithium ion battery is prepared by chemical oxidation of natural graphite. After oxidation. the propel-ties of natural graphite are modified, such as surface structure. the content of graphite phases, the number of micropores and its stability. thus the modified natural graphite can be used as anode material for commercial lithium ion battery. The reversible capacity is increased from 100 mAh/g to above 300 mAh/g, and its cycling property is also satisfactory.