Title:
RECYCLING METHOD FOR CATHODE MATERIAL
Document Type and Number:
WIPO Patent Application WO/2019/216646
Kind Code:
A1
Abstract:
The present invention relates to a recycling method for a cathode material and, more specifically, to a recycling method for a cathode material, the method comprising the steps of: introducing a cathode for a lithium secondary battery into a solvent, the cathode comprising a current collector and a cathode active material layer formed on the current collector, the cathode active material layer containing a first cathode active material, a first binder, and a first conductor; separating at least a part of the cathode active material layer from the current collector; adding a second binder powder into the solvent, followed by primary mixing; and adding a second cathode active material and a second conductor into the solvent, followed by secondary mixing, to prepare a cathode material slurry, wherein the ratio of the total weight of the first cathode active material, the first binder, and the first conductor, contained in the separated cathode active material layer, and the total weight of the second cathode active material, the second binder powder, and the second conductor is 8:92 to 28:72.
Inventors:
BAEK JOO YUL (KR)
KIM WOO HA (KR)
KIM IN SEONG (KR)
LIM JUN MUK (KR)
CHOY SANG HOON (KR)
KIM WOO HA (KR)
KIM IN SEONG (KR)
LIM JUN MUK (KR)
CHOY SANG HOON (KR)
Application Number:
PCT/KR2019/005507
Publication Date:
November 14, 2019
Filing Date:
May 08, 2019
Export Citation:
Assignee:
LG CHEMICAL LTD (KR)
International Classes:
H01M10/54; H01M4/139; H01M4/36; H01M4/62; H01M10/052
Foreign References:
| JP2014207192A | 2014-10-30 | |||
| KR20120019932A | 2012-03-07 | |||
| JP2016035809A | 2016-03-17 | |||
| KR20150075200A | 2015-07-03 | |||
| KR20170033787A | 2017-03-27 | |||
| KR20030093583A | 2003-12-11 |
Other References:
See also references of EP 3709433A4
Attorney, Agent or Firm:
BAE, KIM & LEE IP GROUP (KR)
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