Nonaqueous electrolyte secondary battery

The purpose of the present invention is to provide a non-aqueous electrolyte secondary battery capable of suppressing damage to an electrode body in the vicinity of an end of an insulating tape due to repeated charge and discharge. A non-aqueous electrolyte secondary battery (10) is provided with an outer package body (15), a wound electrode body (14) housed in the outer package body (15) and obtained by winding a positive electrode (11) and a negative electrode (12) with a separator (13) therebetween, and an insulating tape bonded to the electrode body (14), the insulating tape having a base material layer and an adhesive layer provided on the main surface of the base material layer, the side surface of the base material layer is inclined non-perpendicularly with respect to the main surface. 本发明的目的在于，提供一种非水电解质二次电池，其能够抑制因充放电的反复进行而产生的绝缘胶带的端部附近的电极体的损伤。非水电解质二次电池(10)的特征在于，具备外包装体(15)、收容于外包装体(15)中的将正极(11)与负极(12)夹隔着间隔件(13)卷绕而得的卷绕型电极体(14)和贴合于电极体(14)的绝缘胶带，所述绝缘胶带具有基材层和设于所述基材层的主面上的粘合层，所述基材层的侧面相对于所述主面非垂直地倾斜。