NEGATIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY, METHOD FOR PREPARING NEGATIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY COMPRISING NEGATIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY

摘要

The present invention relates to a negative electrode active material for a lithium secondary battery, comprising: a core including a material that allows for lithium doping and undoping; and a titanium silicide layer formed along the outer periphery of the core including the material that allows for lithium doping and undoping. Furthermore, the present invention relates to a method for preparing the negative electrode active material for the lithium secondary battery and to the lithium secondary battery comprising the negative electrode active material for the lithium secondary battery.