Negative electrode and secondary battery including the same

Abstract

Provided are a negative electrode, which includes a current collector and a negative electrode active material layer disposed on the current collector, wherein the negative electrode active material layer includes a conductive material, a negative electrode active material, and a binder, the negative electrode active material includes a silicon-based active material having a convexity of 0.8 or more as measured using a particle shape analyzer, and the convexity is defined by the following Formula 1, and a secondary battery including the negative electrode. Convexity ⁢ ( C x ) = Convex ⁢ hull ⁢ perimeter ⁢ ( P c ) / Actual ⁢ perimeter ⁢ ( P ) [ Formula ⁢ 1 ]

Dependencies are inferred from the claim text.