NEGATIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY, NEGATIVE ELECTRODE, AND LITHIUM SECONDARY BATTERY

A negative electrode active material for a lithium secondary battery according to the present technology is composed of artificial graphite secondary particles obtained by granulating carbon-based initial particles having different average particle diameters (Dso), in which the carbon-based initial particles include particle group A where an average particle diameter (Dso) is a, and particle group B where an average particle diameter (D) is b, and b < 0.6a. [0002] According to the present invention, as secondary particles are granulated from carbon-based initial particles having different average particle diameters, the tap density is significantly enhanced, and accordingly, the adhesive force and the high temperature storage performance of the negative electrode become excellent.