MULTILAYER ANODE HAVING, IN EACH LAYER, DIFFERENT AMOUNTS OF BINDER AND DIFFERENT ACTIVE MATERIAL GRAIN SIZE, AND LITHIUM SECONDARY BATTERY COMPRISING SAME

摘要

Disclosed are a multi-layer negative electrode and a lithium secondary battery including the same. The multi-layer negative electrode includes: a current collector configured to transmit electrons between an outer lead and a negative electrode active material; a first negative electrode mixture layer formed on one surface or both surfaces of the current collector and including a first negative electrode active material and a first binder; and a second negative electrode mixture layer formed on the first negative electrode mixture layer and including a second negative electrode active material, wherein the first negative electrode mixture layer has an electrode density of about 0.9 to 2.0 g/cc and the second negative electrode mixture layer has an electrode density of about 0.2 to 1.7 g/cc, which is a range lower than that of the electrode density of the first negative electrode mixture layer.