Title:
METHOD FOR RECOVERING CAPACITY OF LITHIUM-ION SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2023/071736
Kind Code:
A1
Abstract:
Provided in the present application is a method for recovering the capacity of a lithium-ion secondary battery. The method comprises the following steps: (1) providing a lithium-ion secondary battery with an attenuated capacity; (2) providing a capacity recovering agent, which comprises a p-phenylenediamine compound, lithium salt and an organic solvent, wherein the organic solvent is used for dissolving the p-phenylenediamine compound and the lithium salt; (3) injecting the capacity recovering agent into the lithium-ion secondary battery; (4) subjecting the capacity recovering agent to a reaction in the lithium-ion secondary battery; and (5) pouring out a liquid mixture from the lithium-ion secondary battery after the reaction, and injecting an electrolyte solution into the lithium-ion secondary battery.
Inventors:
YANG LONGFEI (CN)
YANG LIMEI (CN)
YANG LIMEI (CN)
Application Number:
PCT/CN2022/124022
Publication Date:
May 04, 2023
Filing Date:
October 09, 2022
Export Citation:
Assignee:
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD (CN)
International Classes:
H01M10/42
Foreign References:
| JP2011076930A | 2011-04-14 | |||
| CN109831926A | 2019-05-31 | |||
| CN103187595A | 2013-07-03 | |||
| US20120212186A1 | 2012-08-23 | |||
| CN108346824A | 2018-07-31 |
Attorney, Agent or Firm:
PEKSUNG INTELLECTUAL PROPERTY LTD. (CN)
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