NEGATIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY AND ITS PREPARATION

摘要

PROBLEM TO BE SOLVED: To provide a negative electrode active material for a lithium secondary battery having superior high-rate and shelf life properties even for a high- density pole plate by improving the conductivity of the active material, and a method of preparing the negative electrode active material for the lithium secondary battery. SOLUTION: The negative electrode active material for the lithium secondary battery contains crystalline/noncrystalline carbon, on the surface in which a catalyst is doped or dispersed and carbon gas phase growth fibers or carbon nano-tubes 3 is grown.