HIGH-CAPACITY ANODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY, MANUFACTURING METHOD THEREFOR, AND LITHIUM SECONDARY BATTERY COMPRISING SAME

摘要

An anode active material, according to the present invention, which is an amorphous SiO-C complex of a core-shell structure, comprising: a core part including silicon oxide (SiOx) particles of a pre-Si crystal and a shell part which is a coating layer including a carbon material on a surface of at least a part of the core part. Thus, the present invention provides an electrode active material and a lithium secondary battery, which have high capacity and have excellent lifespan by efficiently suppressing volume expansion which is problem when using Si through the anode active material.