Title:
SURFACE-MODIFIED TERNARY POSITIVE ELECTRODE MATERIAL, AND PREPARATION METHOD THEREFOR AND APPLICATION THEREOF
Document Type and Number:
WIPO Patent Application WO/2024/040896
Kind Code:
A1
Abstract:
The present application relates to the technical field of lithium batteries. Disclosed are a surface-modified ternary positive electrode material, and a preparation method therefor and an application thereof. The surface-modified ternary positive electrode material comprises a ternary positive electrode material and a coating agent. The chemical formula of the ternary positive electrode material is Li(NixCoyMn1-x-y)O2, wherein 0.6≤x≤1, and 0≤y≤0.4; the coating agent comprises an ionic liquid, and the anion of the ionic liquid is one of TFSI⁻, PF⁻6, and BF⁻4; the cation of the ionic liquid is one of an imidazolium salt ion and a pyridinium salt ion; and the coating agent is coated on the surface of the ternary positive electrode material by means of spraying. The present application uses the ionic liquid as the coating agent to coat the surface of the ternary positive electrode material, so that the conductivity, hydrophobicity and stability of the ternary positive electrode material can be improved, the sensitivity of the ternary positive electrode material to the humidity is reduced, and the problem that the ambient humidity control cost is excessive during a process of manufacturing a battery using a high-nickel ternary positive electrode material is solved.
Inventors:
CHEN XIWEN (CN)
LIU WEIJIAN (CN)
RUAN DINGSHAN (CN)
LI CHANGDONG (CN)
CHEN XI (CN)
XU SHUAIJUN (CN)
LIU WEIJIAN (CN)
RUAN DINGSHAN (CN)
LI CHANGDONG (CN)
CHEN XI (CN)
XU SHUAIJUN (CN)
Application Number:
PCT/CN2023/077921
Publication Date:
February 29, 2024
Filing Date:
February 23, 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:
H01M4/505
Foreign References:
| CN115360345A | 2022-11-18 | |||
| CN110137470A | 2019-08-16 | |||
| CN113328072A | 2021-08-31 | |||
| CN108832103A | 2018-11-16 | |||
| CN110233244A | 2019-09-13 | |||
| CN109830643A | 2019-05-31 | |||
| CN111276690A | 2020-06-12 |
Attorney, Agent or Firm:
BEIJING YZH IP FIRM (CN)
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