Title:
METHOD FOR ISOLATING COBALT, NICKEL AND COPPER, WHICH ARE CONTAINED IN WASTE LITHIUM ION BATTERY, BY MEANS OF SELECTIVE LEACHING
Document Type and Number:
WIPO Patent Application WO/2022/092374
Kind Code:
A1
Abstract:
The present invention relates to a method for isolating cobalt, nickel and copper, which are contained in a waste lithium ion battery, by means of selective leaching. The method according to the present invention is a leaching method for a metal comprising cobalt (Co), nickel (Ni) and copper (Cu), obtained by heat treating a waste lithium ion battery, and comprises the steps of: dipping the metal in a first solution comprising methanesulfonic acid and hydrogen peroxide, so as to selectively dissolve cobalt (Co) contained in the metal; and dipping a residue, which is obtained from the selective dissolution of cobalt (Co), in a second solution comprising sulfuric acid, so as to selectively dissolve nickel (Ni) contained in the residue.
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Inventors:
LEE MAN-SEUNG (KR)
Application Number:
PCT/KR2020/015159
Publication Date:
May 05, 2022
Filing Date:
November 02, 2020
Export Citation:
Assignee:
UNIV NAT MOKPO IND ACAD COOP GROUP (KR)
International Classes:
H01M10/54; C22B3/00; C22B7/00; C22B15/00
Foreign References:
| KR20010106562A | 2001-12-07 | |||
| JP2017115179A | 2017-06-29 | |||
| KR20110038767A | 2011-04-15 | |||
| JP2016186118A | 2016-10-27 | |||
| JP2009193778A | 2009-08-27 |
Attorney, Agent or Firm:
IAM PATENT FIRM (KR)
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