ELECTRODE GROUP AND ELECTRICITY STORAGE DEVICE USING THE SAME

摘要

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.

主权项

1. An electrode group comprising:
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, wherein the first electrodes and the second electrodes are alternately stacked with the separators disposed between the first electrodes and the second electrodes, the first current collectors each include a first metal porous body, the plurality of first current collectors include tab-shaped first connection portions each used to electrically connect the first current collectors adjacent to each other, and the first connection portions of the plurality of first current collectors are disposed so as to overlap one another in a stacking direction of the electrode group with sheet-shaped first conductive spacers disposed therebetween, and are fastened to each other by a first fastening member.