| 摘要 |
PROBLEM TO BE SOLVED: To provide a storage element which can easily increase storage efficiency with respect to a vessel of an electrode body.SOLUTION: A nonaqueous electrolyte secondary battery 1 comprises: a vessel 30; an electrode body 11 which is stored in the vessel 30; an electrode terminal 23 provided in the vessel 30; and a collector 12 which electrically connects the electrode terminal 23 with the electrode body 11. The collector 12 has: a base part 12b which is located in the vessel 30 and is connected to the electrode terminal 23; and a plurality of tabular arm parts 12c which extend from the base part 12b and are connected to the electrode body 11 in a state of sandwiching the electrode body 11 therebetween. An interval W2 between a pair of the arm parts 12c which are located at the outermost side out of the plurality of arm parts 12c is larger than a width W1 of the base part 12b in the aligning direction of the pair of the arm parts 12c. |
