Electrode Assembly And Secondary Battery Comprising Same

Abstract: An electrode assembly according to the present invention comprises: a positive electrode comprising a positive electrode active material portion, which is a region formed by laminating a positive electrode active material on a positive electrode current collector, and a positive electrode uncoated region, which is a region in which the positive electrode active material is not laminated; a positive electrode tab provided in the positive electrode uncoated region; a negative electrode comprising a negative electrode active material portion that is a region formed by laminating a negative active material on a negative electrode current collector, and a negative electrode uncoated portion that is a region in which the negative electrode active material is not laminated; a negative electrode tab provided in the negative electrode uncoated region; and a separator insulating the positive electrode and the negative electrode from each other, wherein the negative electrode uncoated portion includes a core-side negative electrode uncoated portion to be located on a core when the positive electrode, the negative electrode, and the separator are wound, and the negative electrode tab is located on one surface of both surfaces of the core-side negative electrode uncoated portion, which faces the positive electrode, and a protective tape is attached on the other surface of the core-side negative electrode uncoated portion.

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