A lithium secondary battery comprising a cylindrical jelly roll having a strip-like electrode assembly wound cylindrically to form a hollow cavity at the core portion, and a center pin inserted into the core portion of the cylindrical jelly roll, wherein the strip-like electrode assembly has a structure comprising a strip-like positive electrode, a strip-like separator and a strip-like negative electrode stacked sequentially, the strip-like positive electrode or the strip-like negative electrode is the strip-like electrode comprising: a strip-like electrode current collector; a first electrode active material layer formed on at least one surface of the strip-like electrode current collector, wherein the cylindrical jelly roll is wound in a way that a portion of the strip-like electrode assembly at which the first electrode active material layer is exposed is positioned at the core portion of the cylindrical jelly roll; a second electrode active material layer formed on the first electrode active material layer, wherein the second electrode active material layer is formed to have a length smaller than the length of the first electrode active material layer so that a part of one longitudinal surface of the first electrode active material layer is exposed to the outside, each of the first electrode active material layer and the second electrode active material layer comprises a binder, and the binder contained in the first electrode active material layer and the binder contained in the second electrode active material layer are present at a weight ratio of from 9:1 to 6:4, and the length of the surface of the first electrode active material layer exposed to the outside is from 1 to 3 times of the length of the circumference of the center pin. a center pin inserted into the core portion of the cylindrical jelly roll, wherein the strip-like electrode assembly has a structure comprising a strip-like positive electrode, a strip-like separator and a strip-like negative electrode stacked sequentially, the strip-like positive electrode or the strip-like negative electrode is the strip-like electrode comprising: a strip-like electrode current collector; a first electrode active material layer formed on at least one surface of the strip-like electrode current collector, wherein the cylindrical jelly roll is wound in a way that a portion of the strip-like electrode assembly at which the first electrode active material layer is exposed is positioned at the core portion of the cylindrical jelly roll; a second electrode active material layer formed on the first electrode active material layer, wherein the second electrode active material layer is formed to have a length smaller than the length of the first electrode active material layer so that a part of one longitudinal surface of the first electrode active material layer is exposed to the outside, each of the first electrode active material layer and the second electrode active material layer comprises a binder, and the binder contained in the first electrode active material layer and the binder contained in the second electrode active material layer are present at a weight ratio of from 9:1 to 6:4, and the length of the surface of the first electrode active material layer exposed to the outside is from 1 to 3 times of the length of the circumference of the center pin. a strip-like electrode current collector; a first electrode active material layer formed on at least one surface of the strip-like electrode current collector, wherein the cylindrical jelly roll is wound in a way that a portion of the strip-like electrode assembly at which the first electrode active material layer is exposed is positioned at the core portion of the cylindrical jelly roll; a second electrode active material layer formed on the first electrode active material layer, wherein the second electrode active material layer is formed to have a length smaller than the length of the first electrode active material layer so that a part of one longitudinal surface of the first electrode active material layer is exposed to the outside, each of the first electrode active material layer and the second electrode active material layer comprises a binder, and the binder contained in the first electrode active material layer and the binder contained in the second electrode active material layer are present at a weight ratio of from 9:1 to 6:4, and the length of the surface of the first electrode active material layer exposed to the outside is from 1 to 3 times of the length of the circumference of the center pin.