Method for evaluating adhesion of separator

A method for evaluating an adhesive strength of a separator that is configured to be disposed between a negative electrode of a battery and a positive electrode of the battery, the method comprising:

• manufacturing an electrode-separator composite including an electrode stacked on at least one surface of a separator, the at least one surface of the separator and a surface of the electrode facing the at least one surface including adhesive portions and non-adhesive portions, and the adhesive portions and the non-adhesive portions are alternately disposed;
• moving the electrode-separator composite;
• cutting the electrode-separator composite in a direction parallel to the moving direction;
• attaching measuring rolls respectively to both surfaces of the cut electrode-separator composite;
• separating the electrode-separator composite by rotating each of the attached measuring rolls and spacing the measuring rolls apart from each other;
• and
• measuring a torque generated by the measuring rolls while separating the electrode-separator composite.