Secondary battery electrode, manufacturing method for the same, and electrode assembly

A manufacturing method for a secondary battery electrode of a jelly-roll electrode assembly, comprising:

• a process of preparing a current collector on which a first active material layer comprising a first inclined portion and a first protruding portion is formed on one surface thereof
• wherein the first inclined portion and the first protruding portion are separate apart with a flat portion, and
• the first inclined portion is closer to the end of the current collector than the first protruding portion;
• a process of transferring the current collector in one direction;
• and
• a process of forming a second active material layer comprising a second inclined portion and a second protruding portion by applying a second active material on the other surface of the current collector
• wherein the second inclined portion and the second protruding portion are separate apart with a flat portion, and
• the second inclined portion is closer to the end of the current collector than the second protruding portion,
• wherein in the process of forming the second active material layer, a position of the second protruding portion is controlled on the second active material layer to be formed at a position that is not directly opposite to the first incline portion with respect to the current collector,
• the second inclined portion, the second protruding portion, the first inclined portion, and the first protruding portion are sequentially arranged from an end of the current collector, and are not in overlap with each other in a thickness direction of the current collector, or
• the second inclined portion, the first inclined portion, the second protruding portion, and the first protruding portion are sequentially arranged from the end of the current collector, and are not in overlap with each other in the thickness direction of the current collector.