▎ 摘　　要

NOVELTY - Anode comprises a current collector and an anode active material layer placed on at least one surface of the current collector, and comprising (1) an anode active material comprising magnesium-containing silicon oxide and a graphene coating layer surrounding the surface of the magnesium-containing silicon oxide; (2) a conductive material comprising single-walled carbon nanotubes and (3) a binder, where the D/G band intensity ratio of graphene contained in the graphene coating layer is 0.8-1.5, and the D/G band intensity ratio of graphene is defined by the average of the ratio of the maximum peak intensity of D band at 1360 plus minus 50 cm-1 to the maximum peak intensity of G band at 1580 plus minus 50 cm-1, obtained by Raman spectroscopy of graphene. USE - The anode is useful in a lithium secondary battery (claimed). ADVANTAGE - The anode has excellent flexibility, initial capacity/efficiency and lifespan characteristics. DETAILED DESCRIPTION - Anode comprises a current collector and an anode active material layer placed on at least one surface of the current collector, and comprising (1) an anode active material comprising magnesium-containing silicon oxide of formula: SiOx, where x = greater than 0 and less than or equal to 2 and a graphene coating layer surrounding the surface of the magnesium-containing silicon oxide; (2) a conductive material comprising single-walled carbon nanotubes and (3) a binder, where the D/G band intensity ratio of graphene contained in the graphene coating layer is 0.8-1.5, and the D/G band intensity ratio of graphene is defined by the average of the ratio of the maximum peak intensity of D band at 1360 plus minus 50 cm-1 to the maximum peak intensity of G band at 1580 plus minus 50 cm-1, obtained by Raman spectroscopy of graphene.