▎ 摘　　要

NOVELTY - Core-shell structure comprises metal core, and shell which is graphene. USE - The core-shell structure is useful in anode material for secondary batteries. ADVANTAGE - The core-shell structure improves durability, capacity and safety of lithium batteries. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) anode material for secondary batteries comprising core-shell structure; and (2) manufacturing core-shell structure comprising providing oxidized metal, growing graphene on the surface of the oxidized metal, and reducing the functional group of the graphene.