| 摘要 |
<P>PROBLEM TO BE SOLVED: To uniformly dope ions with respect to an electrode. <P>SOLUTION: A positive electrode sheet 13, equipped with a positive electrode composite layer 22 on one surface, is provided on one outermost layer of an electrode sheet group 11, and a positive electrode sheet 14, equipped with a positive electrode composite layer 24 on one surface, is provided on the other outermost layer of an electrode sheet group 11. A negative electrode sheet 15, equipped with negative composite material layers 27 on both surfaces, is provided between the positive electrode sheets 13 and 14. A lithium electrode sheet 17, equipped with metal lithium foils 29 on both sides, is overlapped on the electrode sheet group 11 on which the sheet 13-15 are laminated. In manufacturing a wound-type power storage device, the electrode sheet group 11 is wound, along with the lithium electrode sheet 17. In this way, the lithium electrode sheet 17 is disposed so as to sandwich the negative electrode sheet 15, and the distance between the negative sheet 15 and the lithium electrode sheet 17 becomes substantially constant. Accordingly, lithium ions can be uniformly pre-doped in the negative electrode sheet 15. <P>COPYRIGHT: (C)2010,JPO&INPIT |
