▎ 摘　　要

NOVELTY - Anode comprises a current collector, and located on at least one surface of the current collector, an anode active material comprising a magnesium-containing silicon oxide, a carbon coating layer surrounding the surface of the magnesium-containing silicon oxide, and a graphene coating layer surrounding the carbon coating layer, a conductive material including single-walled carbon nanotube, and a negative electrode active material layer containing a binder, where the range of the D/G band intensity ratio of the graphene included in the graphene coating layer is 0.8-1.5, and the D/G band intensity ratio of the graphene is defined as the average value of ratio of the maximum peak of the (D) band at 1360 plus minus 50/cm to the maximum peak intensity of the (G) band at 1580 plus minus 50/cm obtained by Raman spectroscopy of graphene. USE - The anode is useful in lithium secondary battery (claimed). ADVANTAGE - The anode has excellent affinity with single-walled carbon nanotubes and excellent flexibility, and prevents electrical short circuit even when silicon oxide shrinks/expands, and ensures excellent shelf life improvement effect, and prevents direct exposure of the magnesium-containing silicon oxide to the electrolyte, prevents the degradation of the magnesium-containing silicon oxide even at high temperature storage, reduces the volume expansion of the magnesium-containing silicon oxide, and exhibits synergistic effects, and improves the shelf life of secondary batteries, and improves high-temperature storage characteristics.