Negative Electrode For Secondary Battery, Comprising Active Material Layers Having Different Compositions, And Electrode Assembly And Secondary Battery Comprising Same

Abstract: The present invention relates to: a secondary battery negative electrode in which a negative electrode active material layer is formed on at least one surface of a negative electrode current collector; and an electrode assembly and a secondary battery comprising same, the negative electrode active material layer comprising a planar first negative electrode active material layer and a second negative electrode active material layer formed on one or both surfaces of the first negative electrode active material layer, wherein the first negative electrode active material layer comprises uncoated graphite as a first negative electrode active material, and the second negative electrode active material layer comprises carbon-coated graphite as a second negative electrode active material.

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