Title:
SINGLE-CRYSTAL HIGH-NICKEL POSITIVE ELECTRODE MATERIAL AND PREPARATION METHOD THEREFOR AND APPLICATION THEREOF
Document Type and Number:
WIPO Patent Application WO/2022/227494
Kind Code:
A1
Abstract:
The present invention provides a single-crystal high-nickel positive electrode material and a preparation method therefor and an application thereof. The preparation method comprises the following steps: (1) mixing a precursor, a lithium source, and a nano oxide, and performing primary sintering treatment in an oxygen-containing atmosphere to obtain a primary sintered material; and (2) mixing the primary sintered material obtained in step (1) with a titanium source and a cobalt source, and performing secondary sintering treatment in an oxygen-containing atmosphere to obtain the single-crystal high-nickel positive electrode material. The present invention uses a Ti/Co co-coating method, the residual alkali amount of the prepared single-crystal high-nickel positive electrode material can be greatly reduced, and the capacity and the rate capability can also be kept at a high level, so that the technological process is reduced, and the cost is reduced.
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Inventors:
MA JIALI (CN)
ZHANG SHUTAO (CN)
LI ZITAN (CN)
WANG ZHUANG (CN)
WANG YAZHOU (CN)
BAI YAN (CN)
PAN HAILONG (CN)
ZHANG SHUTAO (CN)
LI ZITAN (CN)
WANG ZHUANG (CN)
WANG YAZHOU (CN)
BAI YAN (CN)
PAN HAILONG (CN)
Application Number:
PCT/CN2021/130208
Publication Date:
November 03, 2022
Filing Date:
November 12, 2021
Export Citation:
Assignee:
SVOLT ENERGY TECH CO LTD (CN)
International Classes:
H01M4/505; C01G53/00; C30B1/10; C30B29/22; H01M4/525; H01M10/0525
Foreign References:
| CN112886006A | 2021-06-01 | |||
| CN110436531A | 2019-11-12 | |||
| CN106941162A | 2017-07-11 | |||
| CN111463411A | 2020-07-28 | |||
| CN110451585A | 2019-11-15 | |||
| CN108023078A | 2018-05-11 | |||
| JP2006054159A | 2006-02-23 |
Attorney, Agent or Firm:
BEYOND ATTORNEYS AT LAW (CN)
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