Title:
IRON-BASED LITHIUM SUPPLEMENTING MATERIAL FOR POSITIVE ELECTRODE, AND PREPARATION METHOD THEREFOR AND USE THEREOF
Document Type and Number:
WIPO Patent Application WO/2024/012481
Kind Code:
A1
Abstract:
An iron-based lithium supplementing material for a positive electrode, and a preparation method therefor and the use thereof. The iron-based lithium supplementing material for a positive electrode comprises a lithium-rich iron-based core and a passivation layer coating the surface of the lithium-rich iron-based core, wherein the material of the passivation layer comprises LiFeO2 and LidMOe, where d and e satisfy: d ≥ 2e-5; and M is selected from at least one of Al, Ni, Mn, Co, Ti, Zr, Si, V, Zn, Cr, Cu and P. LiFeO2 and LidMOe form the passivation layer on the surface of the lithium-rich iron-based core; and the passivation layer has high density, does not react with water, and can play a role in isolating water, carbon dioxide and other harmful components in air, thereby ensuring the effect of isolating the material from moisture during a storage process, and thus the material has stable performance, which is beneficial to the wide application thereof.
Inventors:
WAN YUANXIN (CN)
ZHONG ZEQIN (CN)
KONG LINGYONG (CN)
ZHAO ZHONGKE (CN)
ZHONG ZEQIN (CN)
KONG LINGYONG (CN)
ZHAO ZHONGKE (CN)
Application Number:
PCT/CN2023/106941
Publication Date:
January 18, 2024
Filing Date:
July 12, 2023
Export Citation:
Assignee:
SHENZHEN DYNANONIC INNOVAZONE NEW ENERGY TECH CO LTD (CN)
International Classes:
H01M4/525; H01M4/04; H01M4/36; H01M4/485; H01M4/62; H01M10/0525
Foreign References:
| CN115295797A | 2022-11-04 | |||
| US20220020977A1 | 2022-01-20 | |||
| CN108123106A | 2018-06-05 | |||
| CN108682894A | 2018-10-19 | |||
| CN101393984A | 2009-03-25 | |||
| US20200328420A1 | 2020-10-15 |
Attorney, Agent or Firm:
SHENZHEN ZHONGYI UNION INTELLECTUAL PROPERTY AGENCY CO.,LTD. (CN)
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