| abstract |
The present invention relates to a negative electrode for a lithium secondary battery and a lithium secondary battery including the same, wherein the negative electrode for a lithium secondary battery is formed on a current collector and the current collector, and includes a material capable of reversibly reacting with a lithium to form a compound. And a negative electrode active material layer, wherein the current collector has elasticity and is formed on a polymer film support having a thickness of 5 μm to 10 μm and on one or both surfaces of the polymer film support, and having a metal layer having a thickness of 300 nm to 2 μm. do.n n n The negative electrode for lithium secondary batteries of the present invention exhibits a buffering effect against the volume change of the active material due to charge and discharge, thereby improving the life characteristics of the battery of the lithium secondary battery.n n n n Lithium secondary battery, current collector, polymer film support, metal layer, thickness ratio, buffering effect, lifetime characteristics |