Title:
非水電解液二次電池用正極からの箔および活物質の回収方法
Document Type and Number:
Japanese Patent JP7465495
Kind Code:
B2
Abstract:
To provide a method for recovering a foil and an active material from a positive electrode for a non-aqueous electrolyte secondary battery which enables the foil to be prevented from embrittling and thereby enabling the foil and the active material to be easily separated and recovered.SOLUTION: The method for recovering a foil and an active material from a positive electrode for a non-aqueous electrolyte secondary battery is provided that is a method for separating and recovering the foil and the active material from the positive electrode for the non-aqueous electrolyte secondary battery, the method including an addition step S13 of adding an additive to a positive electrode, and a heating step S14 of heating the positive electrode to which the additive is added. The non-aqueous electrolyte and a binder are thermally decomposed to generate HF and a carbon oxide when the positive electrode is heated, the HF and the carbon oxide causing embrittlement of the foil, however the HF and carbon oxide react with the additive added to the positive electrode before the HF and carbon oxide react with Al included in the foil. Therefore embrittlement of the foil due to thermal decomposition of the non-aqueous electrolyte or the binder is prevented by adding an additive to the positive electrode and heating the positive electrode, accordingly the foil and the active material can be easily separated.SELECTED DRAWING: Figure 3
Inventors:
Tatsuya Nunoura
Yutaro Kikuchi
Tomokazu Abe
Hideki Hashimoto
Shinichi Ogura
Kenji Hayashi
Yohei Takano
Yutaro Kikuchi
Tomokazu Abe
Hideki Hashimoto
Shinichi Ogura
Kenji Hayashi
Yohei Takano
Application Number:
JP2019094806A
Publication Date:
April 11, 2024
Filing Date:
May 20, 2019
Export Citation:
Assignee:
Nippon Heavy Chemical Co., Ltd.
Honda motor industry stock company
Honda motor industry stock company
International Classes:
H01M10/54; B09B3/40; B09B3/70; B09B5/00; C22B1/02; C22B7/00; C22B21/00; H01M4/66
Domestic Patent References:
| JP2001115218A | ||||
| JP2012186150A | ||||
| JP2017084081A |
Attorney, Agent or Firm:
Patent Attorney Corporation Dorait International Patent Office