리튬 이차 전지용 음극 활물질, 이의 제조 방법 및 이를 포함하는 리튬 이차 전지

Abstract

The invention relates to a negative active material for a rechargeable lithium battery, including an inner layer including a material being capable of doping and dedoping lithium, a carbon layer outside the inner layer, and an outer layer disposed on the carbon layer and including a material being capable of doping and dedoping lithium. The materials being capable of doping and dedoping lithium may be the same or different from each other. The invention further relates to a method of preparing the negative active material including: preparing a tube-shaped template with a hollow part; forming an outer layer including a material which can dope and dedope lithium inside the template; forming an inner precursor layer including a material which can dope and dedope lithium modified with an organic functional group inside the outer layer; annealing the template; and removing the template.