Title:
リチウムイオン二次電池の再生方法
Document Type and Number:
Japanese Patent JP7415352
Kind Code:
B2
Abstract:
To provide a lithium ion secondary battery regeneration method for enabling reuse of the lithium ion secondary battery itself.SOLUTION: There is provided a lithium ion secondary battery regeneration method including: a preparation step of discharging a consumed lithium ion secondary battery, which is a lithium ion secondary battery on which charging and discharging have been performed a plurality of times, to make a regeneration-prepared lithium ion secondary battery; a first replacement step of replacing a used negative electrode, which is a negative electrode of the regeneration-prepared lithium ion secondary battery, with a lithium supplement electrode containing lithium to make a pre-regeneration processing lithium ion secondary battery; a regeneration step of discharging the pre-regeneration processing lithium ion secondary battery to make a post-regeneration processing lithium ion secondary battery; and a second replacement step of replacing the lithium supplement electrode of the post-regeneration processing lithium ion secondary battery with the used negative electrode or a negative electrode that has not been used to obtain a regenerated lithium ion secondary battery.SELECTED DRAWING: Figure 1
Inventors:
Akiko Takahashi
Application Number:
JP2019132241A
Publication Date:
January 17, 2024
Filing Date:
July 17, 2019
Export Citation:
Assignee:
Sumitomo Metal Mining Co., Ltd.
International Classes:
H01M10/54; H01M4/131; H01M4/133; H01M10/052; H01M10/0525; H01M10/0562; H01M10/0566
Domestic Patent References:
| JP2012195055A | ||||
| JP2020021555A |
Attorney, Agent or Firm:
Tadashige Ito
Tadahiko Ito
Tadahiko Ito