Title:
POSITIVE ELECTRODE LITHIUM-SUPPLEMENTING MATERIAL, AND PREPARATION METHOD THEREFOR AND USE THEREOF
Document Type and Number:
WIPO Patent Application WO/2023/231746
Kind Code:
A1
Abstract:
Disclosed in the present application are a positive electrode lithium-supplementing material, and a preparation method therefor and the use thereof. The positive electrode lithium-supplementing material comprises a lithium-containing inner core and a coating layer coating the surface of the lithium-containing inner core, wherein the material of the coating layer is selected from a hydroxyl-containing semi-finished carbon layer. The provided coating layer plays a role in isolating harmful components such as water and carbon dioxide in the air, such that the stable performance of a lithium-rich material contained in the positive electrode composite substance layer is effectively ensured; moreover, the coating layer is a hydroxyl-containing semi-finished carbon layer, which has a partial conductivity function and can thus improve the conductivity of the positive electrode lithium-supplementing material. In addition, a hydroxyl-containing semi-finished carbon layer has high toughness, which facilitates the complete coating of the lithium-containing inner core, such that the effect of isolating the positive electrode lithium-supplementing material from moisture during storage is ensured, and the performance is stable, thereby facilitating wide application.
Inventors:
WAN YUANXIN (CN)
KONG LINGYONG (CN)
ZHONG ZEQIN (CN)
ZHAO ZHONGKE (CN)
KONG LINGYONG (CN)
ZHONG ZEQIN (CN)
ZHAO ZHONGKE (CN)
Application Number:
PCT/CN2023/093946
Publication Date:
December 07, 2023
Filing Date:
May 12, 2023
Export Citation:
Assignee:
SHENZHEN DYNANONIC INNOVAZONE NEW ENERGY TECH CO LTD (CN)
QUJING DYNANONIC INNOVAZONE NEW ENERGY TECH CO LTD (CN)
FOSHAN DYNANONIC INNOVAZONE NEW ENERGY TECH CO LTD (CN)
QUJING DYNANONIC INNOVAZONE NEW ENERGY TECH CO LTD (CN)
FOSHAN DYNANONIC INNOVAZONE NEW ENERGY TECH CO LTD (CN)
International Classes:
H01M10/42
Domestic Patent References:
| WO2021179794A1 | 2021-09-16 |
Foreign References:
| CN115000536A | 2022-09-02 | |||
| CN108123106A | 2018-06-05 | |||
| CN105098188A | 2015-11-25 | |||
| CN113410447A | 2021-09-17 |
Attorney, Agent or Firm:
SHENZHEN ZHONGYI UNION INTELLECTUAL PROPERTY AGENCY CO.,LTD. (CN)
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