Title:
METHOD FOR RECOVERING TRANSITION METALS FROM LITHIUM SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2022/154316
Kind Code:
A1
Abstract:
A method for recovering transition metals from a lithium secondary battery, of the present invention, comprises the steps of: preparing a cathode active material from a cathode of a lithium secondary battery; generating a first leachate by treating the cathode active material with a first acidic solution containing a reducing agent that is smaller in amount than the amount corresponding to the reaction equivalent of the cathode active material; and generating a second leachate by treating, with a second acidic solution containing a reducing agent, the remaining cathode active material, that excludes a fraction contained in the first leachate, from the cathode active material. Therefore, manganese extraction rate and cobalt purity can be improved.
Inventors:
PARK JI YUN (KR)
LEE HYEON HUI (KR)
YOON KEUM JUNG (KR)
LEE HYEON HUI (KR)
YOON KEUM JUNG (KR)
Application Number:
PCT/KR2021/019931
Publication Date:
July 21, 2022
Filing Date:
December 27, 2021
Export Citation:
Assignee:
SK INNOVATION CO LTD (KR)
International Classes:
H01M10/054; C22B3/00; C22B7/00; H01M10/052
Foreign References:
| KR20200046295A | 2020-05-07 | |||
| KR20010106562A | 2001-12-07 | |||
| KR102154599B1 | 2020-09-10 | |||
| KR20150094412A | 2015-08-19 | |||
| KR100820163B1 | 2008-04-10 |
Attorney, Agent or Firm:
LEECHAE INTELLECTUAL PROPERTY (KR)
Download PDF:
Previous Patent: BATTERY PACK AND DEVICE INCLUDING SAME
Next Patent: CONTACT STRUCTURE OF CAMERA MODULE AND ELECTRONIC APPARATUS COMPRISING SAME
Next Patent: CONTACT STRUCTURE OF CAMERA MODULE AND ELECTRONIC APPARATUS COMPRISING SAME