NEGATIVE ELECTRODE FOR SECONDARY BATTERY COMPRISING ACTIVE MATERIAL LAYER HAVING DIFFERENT COMPOSITION, ELECTRODE ASSEMBLY AND SECONDARY BATTERY COMPRISING THE SAME

The present disclosure relates to a negative electrode for secondary battery in which a negative electrode active material layer is formed on at least one surface of a negative electrode current collector, wherein the negative electrode active material layer includes a first negative electrode active material layer, and a second negative electrode active material layer formed on one side or both sides of the first negative electrode active material layer in a planar, and wherein the first negative electrode active material layer includes uncoated graphite as a first negative electrode active material, and the second negative electrode active material layer includes carbon-coated graphite as a second negative electrode active material, and to an electrode assembly and a secondary battery including same.