Title:
COATED POSITIVE ELECTRODE MATERIAL AND PREPARATION METHOD THEREFOR, AND LITHIUM-ION BATTERY
Document Type and Number:
WIPO Patent Application WO/2024/093082
Kind Code:
A1
Abstract:
Disclosed are a coated positive electrode material and a preparation method therefor, and a lithium-ion battery. The method comprises the following steps: (1) coating the surface of a polycrystalline positive electrode material with a coating agent by using a spray coating method; and (2) tempering the polycrystalline positive electrode material obtained in step (1) to prepare the coated positive electrode material. The coated positive electrode material prepared in the present application has high compaction density, so that the volumetric energy density of a battery is improved. In addition, the surface of primary single crystal particles, the surface of secondary polycrystalline particles and grain boundaries of the secondary polycrystalline particles of the polycrystalline positive electrode material are all coated with the coating agent, so that the contact between the positive electrode material and an electrolyte is effectively avoided, and the cycle performance of the positive electrode material is improved.
Inventors:
CHEN XIWEN (CN)
LIU WEIJIAN (CN)
RUAN DINGSHAN (CN)
LI CHANGDONG (CN)
LUO CUIPING (CN)
XU SHUAIJUN (CN)
LIU WEIJIAN (CN)
RUAN DINGSHAN (CN)
LI CHANGDONG (CN)
LUO CUIPING (CN)
XU SHUAIJUN (CN)
Application Number:
PCT/CN2023/080217
Publication Date:
May 10, 2024
Filing Date:
March 08, 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
Foreign References:
| CN115763684A | 2023-03-07 | |||
| CN115188950A | 2022-10-14 | |||
| CN114220965A | 2022-03-22 | |||
| JP2007048525A | 2007-02-22 |
Attorney, Agent or Firm:
BEIJING YZH IP FIRM et al. (CN)
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