LITHIUM-RICH MANGANESE-BASED POSITIVE ELECTRODE MATERIAL WITH A DOUBLE-LAYER COATED SURFACE, AND PREPARATION METHOD THEREFOR AND USE THEREOF - GUANGDONG BRUNP RECYCLING TECHNOLOGY CO LTD

Title:

LITHIUM-RICH MANGANESE-BASED POSITIVE ELECTRODE MATERIAL WITH A DOUBLE-LAYER COATED SURFACE, AND PREPARATION METHOD THEREFOR AND USE THEREOF

Document Type and Number:

WIPO Patent Application WO/2024/066173

Kind Code:

A1

Abstract:

A lithium-rich manganese-based positive electrode material with a double-layer coated surface, and a preparation method therefor and the use thereof, which belong to the technical field of positive electrode materials of lithium-ion batteries. The lithium-rich manganese-based positive electrode material with a double-layer coated surface comprises a lithium-rich manganese-based positive electrode material as a base material, Cu9S5 as an inner-layer coating material and a cerium-aluminum oxide as an outer-layer coating material. By means of the preparation method comprising modifying with deionized water, doping with S2-, coating with Cu9S5 as an inner layer and coating with a cerium-aluminum oxide as an outer layer, a large number of oxygen vacancies are introduced into the lithium-rich manganese-based positive electrode material, such that the lithium-rich manganese-based positive electrode material has good electrochemical performance.

Inventors:

LI AIXIA (CN)
YU HAIJUN (CN)
XIE YINGHAO (CN)
LI CHANGDONG (CN)

Application Number:

PCT/CN2023/077151

Publication Date:

April 04, 2024

Filing Date:

February 20, 2023

Export Citation:

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Assignee:

GUANGDONG BRUNP RECYCLING TECHNOLOGY CO LTD (CN)
HUNAN BRUNP RECYCLING TECH CO LTD (CN)

International Classes:

H01M4/36; H01M4/48; H01M4/505; H01M4/58; H01M10/0525

Foreign References:

CN115411257A	2022-11-29
CN108172808A	2018-06-15
CN107399717A	2017-11-28
CN108428861A	2018-08-21
CN111900334A	2020-11-06
CN113644272A	2021-11-12
JP2012146443A	2012-08-02

Other References:

"Master Thesis", 15 November 2021, SHAN DONG UNIVERSITY, CN, article NIE, XIANGKUN : "Preparation And Collaborative Modification Research of Lithium-rich Manganese-based Positive Electrode Material", pages: 1 - 157, XP009553568

Attorney, Agent or Firm:

BEIJING YZH IP FIRM (CN)

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