ANODE ACTIVE MATERIAL COMPRISING GRAPHENE-SILICON COMPOSITE, MANUFACTURING METHOD THEREFOR, AND LITHIUM SECONDARY BATTERY COMPRISING SAME

The present disclosure provides an anode active material comprising a graphene-silicon composite, a manufacturing method therefor, and a lithium secondary battery comprising same, wherein the graphene-silicon composite is a secondary graphene-silicon composite formed by gathering primary graphene-silicon composites on a conductive carbon matrix, and the primary graphene-silicon composites are formed of silicon-containing particles laminated (layered) on a reduced graphene oxide sheet.