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    Method of Manufacturing Cathode Active Material for Lithium Secondary Battery
    3.
    发明申请
    Method of Manufacturing Cathode Active Material for Lithium Secondary Battery 有权

    公开(公告)号：US20220293935A1

    公开(公告)日：2022-09-15

    申请号：US17691423

    申请日：2022-03-10

    申请人： SK ON CO., LTD.

    发明人： Kook Hyun Han ,  Ji Hoon Choi ,  Jik Soo Kim ,  Kwang Ho Lee

    IPC分类号： H01M4/525 ,  H01M4/505 ,  H01M4/04 ,  H01M10/0525

    摘要： Provided is a method of manufacturing a cathode active material for a lithium secondary battery. The method of manufacturing a cathode active material for a lithium secondary battery includes mixing a transition metal macro precursor and a lithium precursor to prepare a preliminary lithium-transition metal composite oxide particle; calcining the prepared preliminary lithium-transition metal composite oxide particle; and pulverizing the calcined preliminary lithium-transition metal composite oxide particle to form lithium-transition metal composite oxide particle. Accordingly, the process may be easily performed and a single crystal cathode active material having a uniform size may be manufactured.

    CATHODE ACTIVE MATERIAL AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME
    8.
    发明申请
    CATHODE ACTIVE MATERIAL AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME 有权

    公开(公告)号：US20220131145A1

    公开(公告)日：2022-04-28

    申请号：US17508435

    申请日：2021-10-22

    申请人： SK INNOVATION CO., LTD.

    发明人： Sung Soon Park ,  Ji Hoon Choi ,  Jik Soo Kim ,  Kwang Ho Lee ,  Jeong Hoon Jeun

    IPC分类号： H01M4/525 ,  H01M4/36 ,  H01M10/0525

    摘要： The cathode active material according to embodiments of the present invention includes a lithium composite oxide particle having a form of secondary particle in which a plurality of primary particle are aggregated, wherein the primary particles respectively include a lithium conduction pathway through which lithium ions are diffused. Wherein the primary particles include a first particle, and the first particle has an angle of 45° to 90° formed by a direction from a center of the first particle to a center of the lithium composite oxide particle and a direction of the lithium conduction pathway included in the first particle, wherein a ratio of the number of the first particles among the primary particles located on a surface of the lithium composite oxide particle is 20% or more.