Title:
REGENERATION METHOD FOR WASTE TERNARY POSITIVE ELECTRODE MATERIAL, AND USE THEREOF
Document Type and Number:
WIPO Patent Application WO/2022/193781
Kind Code:
A1
Abstract:
Provided are a regeneration method for a waste ternary positive electrode material, and the use thereof, which belong to the technical field of battery material recycling. The regeneration method comprises the following steps: drying, crushing and sieving a waste ternary positive electrode material to obtain a positive electrode powder; adding the positive electrode powder into an alkali solution for reaction, and stirring, washing and filtering same to obtain filter residue; drying the filter residue, then adding carbonized asphalt and mixing same, and carrying out reductive calcination to obtain a mixture; measuring the contents of nickel, cobalt, manganese, aluminum and lithium in the mixture, adding a nickel source, a cobalt source, a lithium source and a manganese source, adding polyethylene glycol, ball milling same, adding water to obtain a suspension, and carrying out spray granulation on the suspension to obtain a ternary precursor; and carrying out two-stage sintering on the ternary precursor to obtain a regenerated ternary positive electrode material. A waste ternary material is converted into an oxide by means of weak reduction, so that the limitation of a physical method for restoring a waste battery is solved.
Inventors:
NING PEICHAO (CN)
LI CHANGDONG (CN)
LI QIANG (CN)
CHEN RUOKUI (CN)
RUAN DINGSHAN (CN)
CHEN SONG (CN)
LI CHANGDONG (CN)
LI QIANG (CN)
CHEN RUOKUI (CN)
RUAN DINGSHAN (CN)
CHEN SONG (CN)
Application Number:
PCT/CN2021/142773
Publication Date:
September 22, 2022
Filing Date:
December 30, 2021
Export Citation:
Assignee:
GUANGDONG BRUNP RECYCLING TECHNOLOGY CO LTD (CN)
HUNAN BRUNP RECYCLING TECH CO LTD (CN)
HUNAN BRUNP VEHICLES RECYCLING CO LTD (CN)
HUNAN BRUNP RECYCLING TECH CO LTD (CN)
HUNAN BRUNP VEHICLES RECYCLING CO LTD (CN)
International Classes:
C01G53/00; H01M4/505; H01M4/525; H01M10/54; C22B7/00; C22B26/12
Foreign References:
| CN113120971A | 2021-07-16 | |||
| CN112186287A | 2021-01-05 | |||
| CN110240207A | 2019-09-17 | |||
| CN107666022A | 2018-02-06 | |||
| KR101731213B1 | 2017-04-27 | |||
| CN107994288A | 2018-05-04 | |||
| CN109881008A | 2019-06-14 |
Other References:
ZHENG YING, WANG SHIQUAN, GAO YINGLONG, YANG TAO, ZHOU QINWEN, SONG WEI, ZENG CHEN, WU HUIMIN, FENG CHUANQI, LIU JIANWEN: "Lithium Nickel Cobalt Manganese Oxide Recovery via Spray Pyrolysis Directly from the Leachate of Spent Cathode Scraps", ACS APPLIED ENERGY MATERIALS, vol. 2, no. 9, 23 September 2019 (2019-09-23), pages 6952 - 6959, XP055968405, ISSN: 2574-0962, DOI: 10.1021/acsaem.9b01647
Attorney, Agent or Firm:
ADVANCE CHINA IP LAW OFFICE (CN)
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