The present invention relates to a negative electrode including a current collector and a negative electrode active material layer disposed on the current collector, wherein the negative electrode active material layer includes a negative electrode active material, carbon black, and a binder, wherein the negative electrode active material includes silicon particles, and the binder includes a copolymer containing a unit derived from a poly(vinylalcohol) (PVA) and a unit derived from an ionized and substituted acrylate, the binder being included in the negative electrode active material layer in an amount of 18 wt % to 22 wt %.