| 摘要 |
PROBLEM TO BE SOLVED: To provide a nonaqueous electrolyte secondary battery having a high volumetric energy density. SOLUTION: In a nonaqueous electrolyte secondary battery comprising positive and negative electrodes stacked with a separator between them, the plurality of positive electrodes 15 are secured to one side of the long-size separator 17 along the longitudinal direction, and the plurality of negative electrodes 16 to the other side of the separator 17 along the longitudinal direction, in such a way that they alternate in a line without overlapping each other, and the separator 17 on which the positive and negative electrodes 15, 16 are placed is folded to form an electrode stack. At each end of the separator 17, the positive and negative electrodes 15, 16 are fixed by a separator band having a predetermined width and a predetermined thickness. At the portion of the positive electrode 15 fixed by the separator band, a portion where a positive electrode active material is not applied is provided by a predetermined width so that the separator band does not abut to the positive electrode active material. |
