Title:
POSITIVE ELECTRODE LITHIUM SUPPLEMENTING ADDITIVE, AND PREPARATION METHOD THEREFOR AND USE THEREOF
Document Type and Number:
WIPO Patent Application WO/2023/138577
Kind Code:
A1
Abstract:
The present application discloses a positive electrode lithium supplementing additive, and a preparation method therefor and a use thereof. The positive electrode lithium supplementing additive of the present application is of a core-shell structure, a core of the core-shell structure comprises a positive electrode lithium supplementing material, and a coating layer covering the core comprises a piperidine group-containing polymer. The polymer used in the positive electrode lithium supplementing additive of the present application imparts the effect of inhibiting active oxygen and the effect of capturing a free radical generated during charging and discharging of a lithium ion battery to the coating layer, such that the amount of gas generated in the charging and discharging process of the lithium ion battery is obviously reduced, the volume expansion of the lithium ion battery is reduced, and then the stability and safety of charging and discharging of the lithium ion battery are effectively improved and the lithium supplementing effect is improved; the preparation method for the positive electrode lithium supplementing additive can ensure that the structure and electrochemical properties of the prepared positive electrode lithium supplementing additive are stable, and the efficiency is high and the production cost is saved. The positive electrode lithium supplementing additive can be applied to positive electrode sheets and secondary batteries.
Inventors:
WANG MIN (CN)
WAN YUANXIN (CN)
KONG LINGYONG (CN)
YU YONGLONG (CN)
WAN YUANXIN (CN)
KONG LINGYONG (CN)
YU YONGLONG (CN)
Application Number:
PCT/CN2023/072609
Publication Date:
July 27, 2023
Filing Date:
January 17, 2023
Export Citation:
Assignee:
SHENZHEN DYNANONIC INNOVAZONE NEW ENERGY TECH CO LTD (CN)
International Classes:
H01M4/36; H01M10/0525; H01M10/42
Foreign References:
| CN115312706A | 2022-11-08 | |||
| CN113363484A | 2021-09-07 | |||
| CN112599774A | 2021-04-02 | |||
| CN110197888A | 2019-09-03 | |||
| JP2006073240A | 2006-03-16 |
Attorney, Agent or Firm:
SHENZHEN ZHONGYI UNION INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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