Title:
COBALT-FREE HIGH-NICKEL POSITIVE ELECTRODE MATERIAL, PREPARATION METHOD THEREFOR AND USE THEREOF
Document Type and Number:
WIPO Patent Application WO/2022/206910
Kind Code:
A1
Abstract:
Provided in the present invention are a cobalt-free high-nickel positive electrode material, a preparation method therefor and the use thereof. The cobalt-free high-nickel positive electrode material comprises a cobalt-free high-nickel matrix material and a coating layer coated on the cobalt-free high-nickel matrix material, wherein the chemical formula of the cobalt-free high-nickel matrix material is LimNixMnyO2, where 0.2 ≤ m ≤ 0.8, 0.4 ≤ x ≤ 0.95, and 0.05 ≤ y ≤ 0.6; and the coating layer is TiBzO1-z, where 0.2 ≤ z ≤ 0.8. The cobalt-free high-nickel positive electrode material obtained by means of modification using the coating layer TiBzO1-z has good acid resistance and wear resistance, high mechanical strength and excellent conductivity; and when the cobalt-free high-nickel positive electrode material is used for a lithium ion battery, the high-temperature cycling performance, capacity and initial efficiency of the lithium ion battery are greatly improved.
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Inventors:
GUO FENG (CN)
QIAO QIQI (CN)
SHI ZETAO (CN)
WANG PENGFEI (CN)
QIAO QIQI (CN)
SHI ZETAO (CN)
WANG PENGFEI (CN)
Application Number:
PCT/CN2022/084517
Publication Date:
October 06, 2022
Filing Date:
March 31, 2022
Export Citation:
Assignee:
SVOLT ENERGY TECH CO LTD (CN)
International Classes:
C01G53/00; C01B35/12; H01M4/131; H01M4/36; H01M4/505; H01M4/525; H01M4/62; H01M10/0525
Foreign References:
| CN113023794A | 2021-06-25 | |||
| CN111434618A | 2020-07-21 | |||
| CN111682175A | 2020-09-18 | |||
| CN111599999A | 2020-08-28 | |||
| CN111435744A | 2020-07-21 | |||
| CN111200120A | 2020-05-26 | |||
| CN109970106A | 2019-07-05 | |||
| CN110292919A | 2019-10-01 | |||
| JP2021064598A | 2021-04-22 | |||
| CN202110352771A | 2021-03-31 |
Attorney, Agent or Firm:
KANGXIN PARTNERS, P.C. (CN)
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