NEGATIVE ELECTRODE AND SECONDARY BATTERY INCLUDING THE SAME

The present invention relates to a negative electrode including a negative electrode current collector; a lower negative electrode active material layer disposed on the negative electrode current collector; and an upper negative electrode active material layer disposed on the lower negative electrode active material layer, wherein the lower negative electrode active material layer includes a first negative electrode active material including natural graphite particles and a second negative electrode active material including artificial graphite particles in the form of a primary particle, and the upper negative electrode active material layer includes a third negative electrode active material including artificial graphite particles in the form of a secondary particle in which two or more primary particles are assembled, wherein a pore volume of the first negative electrode active material, which is measured by mercury porosimetry, is 0.06 mL/g or less.