Title:
MODIFIED QUATERNARY PRECURSOR, AND PREPARATION METHOD THEREFOR AND USE THEREOF
Document Type and Number:
WIPO Patent Application WO/2024/087363
Kind Code:
A1
Abstract:
The present application provides a modified quaternary precursor, and a preparation method therefor and the use thereof. The preparation method comprises the following steps: (1) mixing a nickel source, a cobalt source, a manganese source and an aluminum source with a solvent to obtain a quaternary solution, adding the quaternary solution, an alkali solution and ammonia water to a base solution in a parallel flow manner and carrying out a one-step reaction to obtain a half-step precursor solution; and (2) adding a cerium source solution and an alkali solution to the half-step precursor solution prepared in step (1) in a parallel flow manner, and carrying out a two-step reaction to obtain the modified quaternary precursor. In the present application, coating the surface of the quaternary precursor with cerium hydroxide during the stage of synthesizing the precursor can improve the conductivity of the material while the material can be stabilized, and during the process of sintering and preparing a positive electrode material, cerium hydroxide can generate CeO2 in situ, and the sintering frequency is reduced.
Inventors:
ZHANG KUN (CN)
JIA DONGMING (CN)
LI CONG (CN)
XU KAIHUA (CN)
XUE XIAOFEI (CN)
LI XUEQIAN (CN)
JIA DONGMING (CN)
LI CONG (CN)
XU KAIHUA (CN)
XUE XIAOFEI (CN)
LI XUEQIAN (CN)
Application Number:
PCT/CN2022/140476
Publication Date:
May 02, 2024
Filing Date:
December 20, 2022
Export Citation:
Assignee:
JINGMEN GEM CO LTD (CN)
GEM CO LTD (CN)
GEM CO LTD (CN)
International Classes:
C01G53/00; C01F17/10; C01F17/235; H01M4/525; H01M10/0525
Foreign References:
| CN105932251A | 2016-09-07 | |||
| CN106654237A | 2017-05-10 | |||
| CN109599545A | 2019-04-09 | |||
| CN111564606A | 2020-08-21 | |||
| CN113363438A | 2021-09-07 |
Other References:
王同振 (WANG, TONGZHEN): "高容量锂离子电池正极材料的包覆改性及循环性能研究 (Non-official translation: Study on Coating Modification and Cycle Performance of High-capacity Lithium Ion Battery Positive Electrode Material)", 中国优秀硕士学位论文全文数据库 工程科技II辑 (ENGINEERING SCIENCE AND TECHNOLOGY Ⅱ, CHINA MASTER’S THESES FULL-TEXT DATABASE), no. 02, 15 February 2021 (2021-02-15), ISSN: 1674-0246
WANG TONGZHEN: "Synthesis and electrochemical performance of CeO2-LiNi0.8Co0.1Mn0.1O2 cathode material", NEW CHEMICAL MATERIALS, vol. 49, no. 5, 14 May 2021 (2021-05-14), pages 166 - 170, XP093163281
WANG TONGZHEN: "Synthesis and electrochemical performance of CeO2-LiNi0.8Co0.1Mn0.1O2 cathode material", NEW CHEMICAL MATERIALS, vol. 49, no. 5, 14 May 2021 (2021-05-14), pages 166 - 170, XP093163281
Attorney, Agent or Firm:
BEYOND ATTORNEYS AT LAW (CN)
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