Negative electrode active material, a method of manufacturing the same, and a lithium battery comprising the same

The negative electrode active material, a method of manufacturing the same, and a lithium battery employing the cathode active material is disclosed. Silicon-based nano-core being the organic material is uniform this carbonized first amorphous carbon-based coating film is continuously coated on the surface, a negative electrode that can compensate for the irreversible capacity loss due to the volume expansion / shrinkage during charge and discharge and improve cycle life characteristics active material, and that the lithium battery is disclosed employing a manufacturing method, the anode active material.