| 摘要 |
PROBLEM TO BE SOLVED: To provide a power storage device arranged so that even if an electrolyte contained in a case is small in quantity, a necessary quantity of the electrolyte is supplied to an electrode body.SOLUTION: A power storage device 1 comprises: an electrode body 2 arranged by winding electrodes with a separator put therebetween; a case 3 containing the electrode body 2 together with an electrolyte; and a supplying member 8 serving to supply the electrolyte to the electrode body 2 in the case 3. The supplying member 8 is disposed between the case 3 and the electrode body 2 in contact with an outer peripheral face of the electrode body 2. In the power storage device, the supplying member 8 is subjected to a treatment for enhancing the affinity with the electrolyte on at least a part of its surface.SELECTED DRAWING: Figure 2 |
