Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
TREATMENT METHOD OF POSITIVE ELECTRODE ACTIVE SUBSTANCE WASTE PRODUCT OF LITHIUM ION SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2020/090690
Kind Code:
A1
Abstract:
This method is for treating a lithium ion secondary battery positive electrode active substance waste product that contains cobalt, nickel, manganese and lithium, and involves: a carbon mixing step in which a powder-form positive electrode active substance waste product is mixed with carbon to obtain a mixture in which the ratio of the mass of the carbon is 10-30% of the total mass of the positive electrode active substance waste product and the carbon; a roasting step for roasting the mixture at a temperature of 600-800°C to obtain a roasted powder; a lithium dissolving step which involves a first dissolving process for dissolving the lithium in the roasted powder in water or a lithium-containing solution and a second dissolving process for dissolving the lithium in the residue obtained in the first dissolving process in water; and an acid leaching step in which the residue obtained in the lithium dissolving step is leached with acid.

Inventors:
GODA TOMONARI (JP)
YAMADA KEISUKE (JP)
OKAJIMA NOBUAKI (JP)
Application Number:
PCT/JP2019/042055
Publication Date:
May 07, 2020
Filing Date:
October 25, 2019
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
JX NIPPON MINING & METALS CORP (JP)
International Classes:
H01M10/54; B09B5/00; C01G53/00; C22B3/04; C22B3/06; C22B5/10; C22B7/00; C22B23/00; C22B26/12; C22B47/00; H01M4/505; H01M4/525
Foreign References:
JP2011094227A2011-05-12
JP2011094228A2011-05-12
JP2014055312A2014-03-27
JP2010180439A2010-08-19
US20110135547A12011-06-09
JPS576457B21982-02-04
JP4581553B22010-11-17
JPS5535717B21980-09-16
Attorney, Agent or Firm:
AXIS PATENT INTERNATIONAL (JP)
Download PDF: