NEGATIVE ELECTRODE AND LITHIUM SECONDARY BATTERY COMPRISING SAME

Disclosed are a negative electrode and a lithium secondary battery including the same. The negative electrode includes: a current collector; and a negative electrode active material layer disposed on at least one surface of the current collector, and including: 1) a negative electrode active material including a plurality of Mg-containing silicon oxide, 2) a conductive material including a plurality of graphene and single-walled carbon nanotubes (SWCNTs), and 3) a binder, wherein the single-walled carbon nanotubes interconnect the Mg-containing silicon oxide through a linear contact, and the single-walled carbon nanotubes are interconnected by means of the graphene, the graphene has a D/G band intensity ratio of 0.8-1.5, and the D/G band intensity ratio of the graphene is defined as an average value of the ratio of the maximum peak intensity of D band at 1360 ± 50 cm-1 to the maximum peak intensity of G band at 1580 ± 50 cm-1, as determined by Raman spectroscopy of graphene.