Title:
METHOD FOR RECYCLING LITHIUM-ION SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2022/163252
Kind Code:
A1
Abstract:
Provided is a method for recycling a lithium-ion secondary battery, the method making it possible to reassemble a lithium-ion secondary battery through a simple procedure and at low cost, the lithium-ion secondary battery being such that the performance thereof is adequately recovered, using a used lithium-ion secondary battery. This method includes: a step for preparing a used lithium-ion secondary battery provided with a battery element that includes a ceramic positive electrode layer, a ceramic separator, and a ceramic negative electrode layer, the lithium-ion secondary battery also being provided with an electrolytic solution and a battery container that accommodates the battery element and the electrolytic solution; a step for retrieving the battery element from the lithium-ion secondary battery; a step for replacing the electrolytic solution within the lithium-ion secondary battery with a fresh electrolytic solution; a step for implementing an electrode restoration process on the battery element, the electrode restoration process including a cleaning process and/or a heating process; and a step for returning the battery element that has been subjected to the electrode restoration process into the battery container and assembling the lithium-ion secondary battery.
Inventors:
TANAKA YUKI (JP)
KOBAYASHI NOBUYUKI (JP)
KOBAYASHI NOBUYUKI (JP)
Application Number:
PCT/JP2021/048043
Publication Date:
August 04, 2022
Filing Date:
December 23, 2021
Export Citation:
Assignee:
NGK INSULATORS LTD (JP)
International Classes:
H01M4/131; H01M4/485; H01M4/525; H01M10/052; H01M10/0566; H01M10/058; H01M10/42; H01M10/54; H01M50/409
Foreign References:
| JP2012022969A | 2012-02-02 | |||
| JP2000260491A | 2000-09-22 |
Attorney, Agent or Firm:
TAKAMURA Masaharu et al. (JP)
Download PDF: