Anode active material for rechargeable lithium ion battery and method for preparing thereof and lithium ion battery manufactured using the same

摘要

The present invention relates to an anode active material for a rechargeable lithium ion battery, a method for preparing the same and a lithium ion battery manufactured using the same. According to the present invention, an anode active material's surface is coated with a fluorine- based compound. The present invention can stabilize the surface of the anode active material to reduce the influence caused by a decomposition reaction of an organic electrolyte liquid that results in an irreversible capacity. And, the present invention can reduce the influence on an acid generated by oxidation of an electrolyte during charging or discharging, thereby exhibiting excellent cycleability and high rate capability when charging or discharging.