POWER STORAGE DEVICE AND MANUFACTURING METHOD OF THE SAME

To provide a power storage device capable of efficiently pre-doping lithium when pre-doping lithium into a negative electrode active material contained in a wound electrode body and a manufacturing method of the same.SOLUTION: A lithium ion capacitor includes: an electrolytic solution 20; and a woun...

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Hauptverfasser: TAGAMI TOMOYA, MIZUMA KOTARO, SHA TAKESHI
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:To provide a power storage device capable of efficiently pre-doping lithium when pre-doping lithium into a negative electrode active material contained in a wound electrode body and a manufacturing method of the same.SOLUTION: A lithium ion capacitor includes: an electrolytic solution 20; and a wound electrode body WB to which the electrolytic solution 20 is impregnated and in which a positive electrode 31 and a negative electrode 32 are laminated and wound via a separator 33. A negative electrode active material is connected to a negative electrode tab terminal 35 derived from a wound end surface of the wound electrode body WB and lithium ions supplied from a lithium electrode 36 containing a lithium metal 37 for pre-doping are occluded.SELECTED DRAWING: Figure 1 【課題】巻回電極体に含まれる負極活物質にリチウムをプレドープするときに、リチウムのプレドープを効率よく行うことができる蓄電デバイス及び蓄電デバイスの製造方法を提供する。【解決手段】リチウムイオンキャパシタは、電解液20と、電解液20が含浸され、正極31及び負極32がセパレータ33を介して積層及び巻回された巻回電極体WBとを備える。負極活物質には、巻回電極体WBの巻回端面から導出された負極タブ端子35に接続され、プレドープ用のリチウム金属37を含むリチウム極36から供給されたリチウムイオンが吸蔵される。【選択図】図1