ELECTRODE ASSEMBLY AND MANUFACTURING METHOD THEREFOR

According to the present invention, provided is a method for manufacturing an electrode assembly in which a negative electrode having a negative electrode active material loaded on a surface of a negative electrode collector, a separator, and a positive electrode having a positive electrode active material loaded on a surface of a positive electrode collector are stacked on each other, the method comprising an N/P ratio examination step (S1) of determining whether an N/P ratio is to be maintained within a predetermined range, the N/P ratio representing a ratio of a loading amount of the positive electrode active material to a loading amount of the negative electrode active material per unit area in a region in which the negative electrode and the positive electrode face each other when stacked, an adjustment request area selecting step (S2) of selecting an adjustment request area that is expected to have an N/P ratio beyond the predetermined range, and an active material adjusting step (S3) in which each of a loading amount of the negative electrode active material and a loading amount of the positive electrode active material on a corresponding area of each of the negative electrode and the positive electrode which are to be positioned in the adjustment request area is allowed to increase or decrease with respect to a loading amount loaded on the other areas.According to the present invention, provided is an electrode assembly in which a negative electrode having a negative electrode active material loaded on a surface of a negative electrode collector, a separator, and a positive electrode having a positive electrode active material loaded on a surface of a positive electrode collector are stacked on each other, the electrode assembly comprising a flat section in which the negative electrode and the positive electrode are parallel to each other in a flat surface shape, and a curved section which has a curved shape due to folding of the negative electrode and the positive electrode and is connected to an end of the flat section. The loading amount of at least one of the negative electrode active material or the positive electrode active material which is loaded on the curved section is greater or less than a loading amount of each of the negative electrode active material and the positive electrode active material which are loaded on the flat section.