CPC H01M 4/661 (2013.01) [H01M 4/366 (2013.01); H01M 4/623 (2013.01); H01M 10/0525 (2013.01); H01M 2004/021 (2013.01); H01M 2004/027 (2013.01)] | 14 Claims |
1. A negative electrode for a lithium secondary battery, the negative electrode comprising:
a current collector; and
a negative electrode active material layer on the current collector,
wherein the negative electrode active material layer comprises a first active material layer including a first active material and a first binder, and a second active material layer on the first active material layer and including a second active material and a second binder,
wherein a content of the first binder is greater than a content of the second binder,
wherein the negative electrode has an active mass density of 1.20 g/cc to 1.80 g/cc: and
wherein an average particle size (D50) of the first active material is larger than an average particle size (D50) of the second active material.
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