POWER STORAGE ELEMENT AND METHOD FOR MANUFACTURING SAME

Provided is a power storage element including: an outer collector including outer opposing walls facing each other with a gap therebetween in an opposition direction, an inner collector including inner opposing walls, and an electrode member disposed in a space defined between the opposing walls. The electrode member includes: an electrode laminate having a sheet-like shape and including a positive electrode body, a negative electrode body, and a separator interposed between the positive and negative electrode bodies. The electrode laminate forms a plurality of unit electrode layers laminated in a lamination direction perpendicular to the opposition direction, and adjacent unit electrode layers in the lamination direction are continued in a bending manner at end portions of the unit electrode layers in an extension direction. The positive electrode body and the negative electrode body are in contact with a first collector and a second collector, respectively, to be electrically connected thereto.