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

摘要

The present invention relates to a multilayer anode and a lithium secondary battery comprising the same, the multilayer anode comprising: a current collector for transferring electrons between an external conductive wire and an anode active material; a first anode mixture layer formed on one surface or both surfaces of the current collector and including a first anode active material and a first binder; and a second anode mixture layer formed on the first anode mixture layer and including a second anode active material, wherein the electrode density of the first anode mixture layer is 0.9 to 2.0 g/cc, and the electrode density of the second anode mixture layer is 0.2 to 1.7 g/cc, which is lower than the electrode density of the first anode mixture layer.