Patent ID: 9472796
Filing Date: 2016-10-18
CPC Classification: H01M,Y02E,Y02P,Y02T,Y10T

Claim Text:
1. A stacked secondary battery comprising: a laminated body, the laminated body comprising: a plurality of first electrodes, each of which comprises a first sheet-shaped collector and a first electrode active material that is applied to both surfaces of the first sheet-shaped collector; a plurality of second electrodes, each of which comprises a second sheet-shaped collector and a second electrode active material different in polarity from the first electrode active material, that is applied to both surfaces of the second sheet-shaped collector; and a plurality of porous separators, the first electrodes and the second electrodes being alternately stacked via the porous separators, wherein each of the first electrodes comprises a first region to which the first electrode active material has been applied and a second region to which the first electrode active material has not been applied, wherein an area of the first region of at least one of the first electrodes is smaller than an area of a region of at least one of the second electrodes to which the second electrode active material has been applied, and wherein each of the porous separators comprises a first portion that is disposed at a peripheral edge of the porous separator and that is folded into a plurality of layers and a second portion other than the first portion that is made of a single layer, and at least a portion of the first portion faces the second region of the at least one of the first electrodes and the region of the at least one of the second electrodes to which the second electrode active material has been applied and is located between the second region the at least one of the first electrodes and the region of the at least one of the second electrodes to which the second electrode active material has been applied.