NEGATIVE ELECTRODE ACTIVE MATERIAL, METHOD OF PREPARING THE NEGATIVE ELECTRODE ACTIVE MATERIAL, NEGATIVE ELECTRODE, AND SECONDARY BATTERY INCLUDING THE NEGATIVE ELECTRODE

The present invention relates to a negative electrode active material which includes a core including artificial graphite, and a carbon coating layer disposed on the core, wherein an edge plane has a specific surface area of 1.0 m2/g to 1.9 m2/g, a negative electrode including the same, and a secondary battery including the negative electrode.