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

An anode active material for a lithium secondary battery according to an embodiment of the present invention includes a first anode active material and a second anode active material, each of which includes a carbon-based active material and has a crystallite size in a range from 50 nm to 60 nm. An XRD orientation ratio of the first anode active material is in a range from 0.9 to 1.2, and an XRD orientation ratio of the second anode active material is in a range from 1 to 5. High-temperature storage and life-span properties are improved while maintaining high capacity using the combination of the first and second anode active materials.