ANODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME

An anode active material for a secondary battery according to an embodiment of the present invention includes a silicon-based active material, and a graphite-based active material including secondary particles in which a plurality of primary particles are assembled. A ratio of an arithmetic average value of perimeters of the secondary particles relative to a volume average particle diameter (D50) of the secondary particles is maintained within a predetermined range.