Title:
IRON-COATED AND BORON-DOPED HIGH-NICKEL POSITIVE ELECTRODE MATERIAL, PREPARATION METHOD THEREFOR, AND USE THEREOF
Document Type and Number:
WIPO Patent Application WO/2024/060548
Kind Code:
A1
Abstract:
The present invention belongs to the technical field of energy storage materials. Disclosed are an iron-coated and boron-doped high-nickel positive electrode material, a preparation method therefor, and use thereof. The preparation method comprises the following steps: mixing a high-nickel positive electrode material precursor, a lithium source, and a boron source, grinding, drying, and carrying out primary calcination to obtain a boron-doped high-nickel positive electrode material; dispersing the obtained boron-doped high-nickel positive electrode material in a solution, adding a soluble ferric salt and a precipitant, and enabling iron to generate a precipitate to be attached to the surface of the boron-doped high-nickel positive electrode material; and carrying out secondary calcination to obtain the iron-coated and boron-doped high-nickel positive electrode material. The iron-coated and boron-doped high-nickel positive electrode material provided by the present invention has an inner core and a coating layer. The bonding strength of the coating layer and the inner core is high, the material structure is stable, and the battery prepared by using this material has excellent cycle performance. The preparation method provided by the present invention has a simple process and can achieve industrial mass production.
Inventors:
LI AIXIA (CN)
YU HAIJUN (CN)
XIE YINGHAO (CN)
LI CHANGDONG (CN)
YU HAIJUN (CN)
XIE YINGHAO (CN)
LI CHANGDONG (CN)
Application Number:
PCT/CN2023/082859
Publication Date:
March 28, 2024
Filing Date:
March 21, 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:
C01G53/00; H01M4/04; H01M4/131; H01M4/36; H01M4/485; H01M4/505; H01M4/525; H01M4/62; H01M10/0525
Domestic Patent References:
| WO2022127324A1 | 2022-06-23 |
Foreign References:
| CN115490275A | 2022-12-20 | |||
| CN107369816A | 2017-11-21 | |||
| CN114122349A | 2022-03-01 | |||
| CN111463411A | 2020-07-28 | |||
| CN111244397A | 2020-06-05 | |||
| CN113629229A | 2021-11-09 | |||
| CN110957474A | 2020-04-03 | |||
| CN105355880A | 2016-02-24 | |||
| CN109244436A | 2019-01-18 | |||
| US20110291044A1 | 2011-12-01 |
Attorney, Agent or Firm:
JIAQUAN IP LAW (CN)
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