| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a wound type power storage device capable of doping lithium ions to the electrode layers of electrode sheets as a whole, in a short period, and accordingly, of obtaining high productivity. <P>SOLUTION: In this wound-type power storage device which has an electrode wound unit wound via a separator between respective electrode sheets of a positive electrode and a negative electrode, wherein an electrode layer is formed on a current collector and has an electrolyte solution containing lithium salt, and in which to at least one electrode layer of respective electrode sheets, lithium ions are doped that are discharged from a film-shaped interior side lithium ion supply source arranged at a side farther interior than at least one innermost peripheral wound portion of respective electrode sheets and a film shaped exterior side lithium ion supply source arranged at a side farther exterior than at least one outermost peripheral wound portion of respective electrode sheets, the ratio V1/V2 between volume V1 of the interior side lithium ion supply source and volume V2 of the exterior side lithium ion supply source is in the range of 0.5-2. <P>COPYRIGHT: (C)2011,JPO&INPIT |
