Title:
REPARATIVE REGENERATION METHOD FOR POSITIVE ELECTRODE MATERIAL OF ALKALI METAL ION BATTERY, POSITIVE ELECTRODE MATERIAL, AND USE
Document Type and Number:
WIPO Patent Application WO/2024/093095
Kind Code:
A1
Abstract:
Disclosed in the present invention are a reparative regeneration method for a positive electrode material of an alkali metal ion battery, a positive electrode material, and the use. The reparative regeneration method comprises: pretreatment: doping a recycled positive electrode material by means of using halide ions, and/or subjecting Ni3+ in the positive electrode material to reduction by using alkyl radicals; alkali metal supplementation: supplementing alkali metal ions to the pretreated positive electrode material; and sintering: sintering the positive electrode material supplemented with the alkali metal ions. The present application dopes the recycled positive electrode material by means of using halide ions; and halide ion doping can provide an effect in attracting the alkali metal ions, thus reducing the migration energy of the alkali metal, and stabilizing the material framework. The alkyl radicals have the reducibility to reduce Ni3+ into Ni2+, thus reducing the diffusion resistance of alkali metal ions according to the principle of charge conservation. Therefore, the halide ions and the alkyl radicals both enable waste positive-electrode powder to have a better alkali metal supplementing effect during the alkali metal supplementing process.
Inventors:
WU ZHIJING (CN)
YU HAIJUN (CN)
XIE YINGHAO (CN)
LI AIXIA (CN)
LI CHANGDONG (CN)
YU HAIJUN (CN)
XIE YINGHAO (CN)
LI AIXIA (CN)
LI CHANGDONG (CN)
Application Number:
PCT/CN2023/083148
Publication Date:
May 10, 2024
Filing Date:
March 22, 2023
Export Citation:
Assignee:
GUANGDONG BRUNP RECYCLING TECHNOLOGY CO LTD (CN)
HUNAN BRUNP RECYCLING TECH CO LTD (CN)
HUNAN BRUNP RECYCLING TECH CO LTD (CN)
International Classes:
H01M4/04; H01M10/54
Foreign References:
| CN115548245A | 2022-12-30 | |||
| CN106058353A | 2016-10-26 | |||
| CN105958056A | 2016-09-21 | |||
| CN114069084A | 2022-02-18 | |||
| CN106299529A | 2017-01-04 | |||
| CN114162881A | 2022-03-11 | |||
| CN110791652A | 2020-02-14 |
Attorney, Agent or Firm:
JIAQUAN IP LAW (CN)
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