Title:
METHOD FOR REGENERATING TERNARY PRECURSOR BY USING NICKEL-COBALT-MANGANESE RESIDUE
Document Type and Number:
WIPO Patent Application WO/2022/142904
Kind Code:
A1
Abstract:
A method for regenerating a ternary precursor by using a nickel-cobalt-manganese residue, comprising: mixing a nickel-cobalt-manganese residue, water, and a reducing agent, adjusting the obtained mixed solution to alkaline, and then mixing same with an ammonium salt to obtain a mixed slurry; and carrying out a hydrothermal reaction on the mixed slurry to obtain a ternary precursor. The nickel-cobalt-manganese residue and the reducing agent are mixed for a hydrothermal reaction; under the action of the reducing agent, a metal oxide in the nickel-cobalt-manganese residue is reduced to a corresponding +2-valent metal hydroxide or carbonate; the morphology and particle size of the product are controlled by adjusting the pH value, adding an ammonium salt, and controlling the hydrothermal reaction temperature; finally, the obtained product can restore the morphology and electrochemical performance of the original ternary precursor. The method for regenerating a ternary precursor by using a nickel-cobalt-manganese residue allows for direct reduction of a nickel-cobalt-manganese residue into a ternary precursor, can implement recycling of waste ternary positive electrode materials, and has a great application prospect.
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Inventors:
GUO CHUNPING (CN)
LIU WENWEN (CN)
ZHOU YOUCHI (CN)
WEN XIAOQIANG (CN)
HONG KAN (CN)
LAI HUASHENG (CN)
HUANG YETIAN (CN)
PU JIAN (CN)
ZHANG FAN (CN)
WU SHIYONG (CN)
LIU WENWEN (CN)
ZHOU YOUCHI (CN)
WEN XIAOQIANG (CN)
HONG KAN (CN)
LAI HUASHENG (CN)
HUANG YETIAN (CN)
PU JIAN (CN)
ZHANG FAN (CN)
WU SHIYONG (CN)
Application Number:
PCT/CN2021/133163
Publication Date:
July 07, 2022
Filing Date:
November 25, 2021
Export Citation:
Assignee:
GANZHOU NONFERROUS METALLURGY RES INSTITUTE CO LTD (CN)
International Classes:
H01M4/505; C01G53/00; H01M4/525; H01M10/0525
Domestic Patent References:
| WO2014154152A1 | 2014-10-02 |
Foreign References:
| CN112830526A | 2021-05-25 | |||
| CN109904548A | 2019-06-18 | |||
| CN103296269A | 2013-09-11 | |||
| CN110364727A | 2019-10-22 | |||
| CN107799749A | 2018-03-13 | |||
| CN107117661A | 2017-09-01 | |||
| CN111498914A | 2020-08-07 | |||
| CN108649291A | 2018-10-12 |
Attorney, Agent or Firm:
BEIJING GAOWO LAW FIRM (CN)
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