CONDUCTIVE SINGLE CRYSTAL SILICON PARTICLES COMPRISING MICROPORES AND HAVING HIGHLY CONDUCTIVE CARBON AND ULTRA-THIN METAL FILM COATED THEREON, NEGATIVE ELECTRODE ACTIVE MATERIAL FOR HIGH CAPACITY SECONDARY BATTERY COMPRISING SAME, AND METHOD FOR PREPARING SAME

摘要

Provided are conductive single crystal silicon particles comprising micropores and having highly conductive carbon and ultra-thin metal film coated thereon, a negative electrode active material, for a high capacity secondary battery, comprising same, and a method for preparing same. The present invention comprises: conductive single crystal silicon particles having doped thereon one or more elements selected from the elements of groups 3(III) and 5(V); a thin metal layer coated on the surface of the conductive single crystal silicon particles; and a highly conductive carbon coating layer which is laminated and coated on the thin metal layer, wherein micropores can be formed between the conductive single crystal silicon particles and the carbon coating layer.