| abstract |
An electrode group includes a plurality of first electrodes including sheet-shaped first current collectors and a first active material carried on the first current collectors, a plurality of second electrodes including sheet-shaped second current collectors and a second active material carried on the second current collectors, and sheet-shaped separators disposed between the first electrodes and the second electrodes. The first electrodes and the second electrodes are alternately stacked with the separators disposed between the first electrodes and the second electrodes, and the first current collectors each include a first metal porous body. |