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    POSITIVE ELECTRODE ACTIVE MATERIAL AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME
    1.
    发明公开
    POSITIVE ELECTRODE ACTIVE MATERIAL AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME 审中-公开

    公开(公告)号：EP4512778A1

    公开(公告)日：2025-02-26

    申请号：EP24212478.2

    申请日：2022-10-24

    Applicant: ECOPRO BM CO., LTD.

    Inventor： CHUN, Yu Gyeong ,  CHOI, Moon Ho ,  CHOI, Yoon Young ,  SHIN, Jong Seung ,  LEE, Jin Won

    IPC: C01G53/00 ,  H01M4/525 ,  C01G53/84

    Abstract: The present invention relates to a positive electrode active material and a lithium secondary battery including the same, and more particularly, to a bimodal-type positive electrode active material including a first lithium composite oxide as a small particle and a second lithium composite oxide as a large particle, wherein the positive electrode active material may uniformly improve the particle stability of the small particle and the large particle by controlling a slope of a concentration gradient in which cobalt in the small particle and the large particle decreases from a surface portion toward a central portion, a positive electrode including the positive electrode active material, and a lithium secondary battery using the positive electrode.

    METHOD FOR PREPARING POSITIVE ELECTRODE ACTIVE MATERIAL AND POSITIVE ELECTRODE ACTIVE MATERIAL
    3.
    发明公开
    METHOD FOR PREPARING POSITIVE ELECTRODE ACTIVE MATERIAL AND POSITIVE ELECTRODE ACTIVE MATERIAL 审中-公开

    公开(公告)号：EP4510231A1

    公开(公告)日：2025-02-19

    申请号：EP23820080.2

    申请日：2023-06-07

    Applicant: LG Chem, Ltd.

    Inventor： HA, Seoung Chul ,  LEE, Seong Min ,  YOU, Min Kyu ,  LEE, June Woo ,  LEE, Kyung Lok ,  SHIN, Ji A ,  HEO, Un Seon ,  DO, Joong Yeop

    IPC: H01M4/525 ,  H01M4/505 ,  H01M4/131 ,  H01M10/0525 ,  C01G53/00 ,  H01M4/02

    Abstract: The present invention relates to a method for preparing a positive electrode active material and a positive electrode active material, and relates to a method for preparing a positive electrode active material, and a positive electrode active material prepared by the preparation method, the method comprising the steps of: (A) adding, into a reactor, a solution containing at least one transition metal selected from nickel, cobalt, and manganese, a zirconium-containing raw material, an ammonium cationic complexing agent, and a basic solution and subjecting same to a coprecipitation reaction to thereby prepare a zirconium-containing composite transition metal hydroxide; and (B) mixing the zirconium-containing composite transition metal hydroxide with a lithium-containing raw material and an aluminum-containing raw material and calcining the mixture to thereby prepare a lithium composite transition metal oxide, wherein the lithium composite transition metal oxide comprises at least one selected from nickel, cobalt, and manganese, zirconium, and aluminum.

    PRECURSOR FOR SODIUM-ION BATTERY POSITIVE ELECTRODE MATERIAL AND PREPARATION METHOD THEREFOR, SODIUM-ION BATTERY POSITIVE ELECTRODE MATERIAL, SODIUM-ION BATTERY, AND ELECTRICAL DEVICE
    7.
    发明公开
    PRECURSOR FOR SODIUM-ION BATTERY POSITIVE ELECTRODE MATERIAL AND PREPARATION METHOD THEREFOR, SODIUM-ION BATTERY POSITIVE ELECTRODE MATERIAL, SODIUM-ION BATTERY, AND ELECTRICAL DEVICE 审中-公开

    公开(公告)号：EP4506309A1

    公开(公告)日：2025-02-12

    申请号：EP23869697.5

    申请日：2023-06-02

    Applicant: CNGR Advanced Material Co., Ltd.

    Inventor： YIN, Shuo ,  LI, Wei ,  ZHANG, Yuying ,  LIN, Yijia ,  LIU, Xiaohu

    IPC: C01G53/00 ,  H01M4/505 ,  H01M10/054 ,  H01M4/525

    Abstract: The present invention provides a precursor for sodium-ion battery positive electrode material and a preparation method therefor, a sodium-ion battery positive electrode material, a sodium-ion battery, and an electrical device, and relates to the field of batteries. Provided is a precursor for sodium-ion battery positive electrode material, which has a chemical general formula of Ni x Mn y Fe 1-x-y (OH) 2 , wherein 0.15≤x≤0.35, and 0.2≤y≤0.5. The precursor for sodium-ion battery positive electrode material contains a S element with a content of ≤ 4000 ppm, and has a Na/S mass ratio of ≤ 1.5. By means of the precursor for sodium-ion battery positive electrode material provided by the present invention, the prepared positive electrode material is very good in element uniformity, few in structural defects, controllable in particle size, good in degree of sphericity, and high in energy density. With the retention of the content of trace sulfur impurities, the lower the sodium-sulfur ratio, the better the battery capacity, first efficiency, and cycle performance at the same level of sulfur content.

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