METHOD FOR RECYCLING POSITIVE ELECTRODE MATERIAL FROM SCRAPPED POSITIVE ELECTRODE SHEETS BY DESORPTION AND APPLICATION

WIPO Patent Application WO/2024/055549

A1

Disclosed in the present invention are a method for recycling a positive electrode material from scrapped positive electrode sheets by desorption and an application. The method comprises the following steps: (1) placing scrapped positive electrode sheets in a reaction vessel, and filling the reaction vessel with an initiator under a closed condition for treatment; (2) filling the reaction vessel with chlorine gas under the closed condition for treatment; (3) soaking the scrapped positive electrode sheets treated in step (2) in an organic solvent, and sieving to obtain aluminum foils and slurry; and (4) filter-pressing the slurry obtained in step (3) to obtain a filtrate and filter residues, drying the filter residues and then pyrolyzing same to obtain a positive electrode material. The method can effectively improve the separation effect of a positive electrode material and aluminum foils.

JPS56134525	OXIDE ORE DRESSING METHOD
WO/1983/001612	CHLORINATION OF AN ALUMINOUS MATERIAL

YU HAIJUN (CN)
WANG TAO (CN)
XIE YINGHAO (CN)
LI AIXIA (CN)
ZHANG XUEMEI (CN)
LI CHANGDONG (CN)

PCT/CN2023/082548

March 21, 2024

March 20, 2023

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GUANGDONG BRUNP RECYCLING TECHNOLOGY CO LTD (CN)
HUNAN BRUNP RECYCLING TECH CO LTD (CN)

C22B21/00; C01G51/00; C01G53/00; C22B7/00; C22B23/00; C22B26/12; C22B47/00; H01M10/54

CN115478174A	2022-12-16
CN114512738A	2022-05-17
CN103066343A	2013-04-24
CN107275700A	2017-10-20
CN101212074A	2008-07-02
US20220115718A1	2022-04-14
JP2015185471A	2015-10-22
CN101570347A	2009-11-04

JIAQUAN IP LAW (CN)

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