Multi-layer anode with Different Binder Content and Different Particle Size of Active Material in each layer and Lithium Secondary Battery Comprising the Same

摘要

The present invention, the current collector for transferring electrons between the outer conductor and the negative electrode active material; A first negative electrode mixture layer formed on one 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; It contains, The electrode density of the first negative electrode mixture layer is 0.9 to 2.0 g / cc, and the electrode density of the second negative electrode mixture layer is 0.2 to less than the electrode density of the first negative electrode mixture layer. It relates to a multilayer negative electrode and a lithium secondary battery comprising the same, characterized in that 1.7 g / cc.