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公开(公告)号：US10957897B2
公开(公告)日：2021-03-23
申请号：US15824829
申请日：2017-11-28
发明人： Yumi Song , Seonyoung Kwon , Kihyun Kim , Soohyeon Kim , Jinhwa Kim , Joongho Moon , Jaeho Lee , Kwanghwan Cho , Soonbong Choi , Mingzi Hong
IPC分类号： H01M4/131 , H01M4/133 , H01M4/36 , H01M4/485 , H01M4/505 , H01M4/525 , H01M4/66 , H01M10/052 , H01M10/0525 , H01M4/02 , C01B32/22
摘要： A composite cathode active material, a cathode including the composite cathode active material, and a lithium battery including the cathode are provided. The composite cathode active material includes a core including a lithium metal oxide and a coating layer on the core, wherein the lithium metal oxide includes two or more transition metals including nickel (Ni), an amount of Ni within one mole of the two or more transition metals included in the lithium metal oxide is about 0.65 mol or greater, the coating layer includes LiF, and a resistance of the composite cathode active material is lower than that of the core.
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公开(公告)号：US11894554B2
公开(公告)日：2024-02-06
申请号：US16320057
申请日：2017-08-22
发明人： Jungmin Han , Kihyun Kim , Jaeho Lee , Ming-Zi Hong
IPC分类号： H01M4/38 , H01M4/505 , H01M4/525 , H01M10/0525
CPC分类号： H01M4/505 , H01M4/382 , H01M4/525 , H01M10/0525
摘要： Provided are a cathode active material for a lithium secondary battery, a method for preparing the same, and a lithium secondary battery comprising the same. The cathode active material for a lithium secondary battery comprises: a lithium metal compound; and a lithium compound disposed on the surface of the lithium metal compound, wherein the content of lithium contained in the lithium compound is 0.25 parts by weight or less with respect to 100 parts by weight of the lithium metal compound, wherein the specific surface area of the lithium compound is between 0.5 m2/g and 2.0 m2/g, and the pH of the lithium compound is between 11.5 and 12.3.
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公开(公告)号：US10790504B2
公开(公告)日：2020-09-29
申请号：US16326894
申请日：2017-08-22
发明人： Jaeho Lee , Seonyoung Kwon , Kihyun Kim , Yumi Song , Kwanghwan Cho
摘要： Provided are a composite cathode active material for a lithium ion battery including a nickel-rich lithium nickel-based compound having a nickel content of 50 to 100 mol % based on a total content of transition metals; and a coating film including a rare earth metal hydroxide and disposed on the surface of the nickel-rich lithium nickel-based compound, a manufacturing method therefor, and a lithium ion battery including a cathode including the composite cathode active material.
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公开(公告)号：US11239456B2
公开(公告)日：2022-02-01
申请号：US16663105
申请日：2019-10-24
发明人： Yumi Song , Seonyoung Kwon , Kihyun Kim , Soohyeon Kim , Jinhwa Kim , Joongho Moon , Jaeho Lee , Kwanghwan Cho , Soonbong Choi , Mingzi Hong
IPC分类号： H01M4/131 , H01M4/133 , H01M4/36 , H01M4/485 , H01M4/505 , H01M4/525 , H01M4/66 , H01M10/052 , H01M10/0525 , H01M4/02 , C01B32/22
摘要： A composite cathode active material, a cathode including the composite cathode active material, and a lithium battery including the cathode are provided. The composite cathode active material includes a core including a lithium metal oxide and a coating layer on the core, wherein the lithium metal oxide includes two or more transition metals including nickel (Ni), an amount of Ni within one mole of the two or more transition metals included in the lithium metal oxide is about 0.65 mol or greater, the coating layer includes LiF, and a resistance of the composite cathode active material is lower than that of the core.
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公开(公告)号：US11075367B2
公开(公告)日：2021-07-27
申请号：US15824829
申请日：2017-11-28
发明人： Yumi Song , Seonyoung Kwon , Kihyun Kim , Soohyeon Kim , Jinhwa Kim , Joongho Moon , Jaeho Lee , Kwanghwan Cho , Soonbong Choi , Mingzi Hong
IPC分类号： H01M4/131 , H01M4/133 , H01M4/36 , H01M4/485 , H01M4/505 , H01M4/525 , H01M4/66 , H01M10/052 , H01M10/0525 , H01M4/02 , C01B32/22
摘要： A composite cathode active material, a cathode including the composite cathode active material, and a lithium battery including the cathode are provided. The composite cathode active material includes a core including a lithium metal oxide and a coating layer on the core, wherein the lithium metal oxide includes two or more transition metals including nickel (Ni), an amount of Ni within one mole of the two or more transition metals included in the lithium metal oxide is about 0.65 mol or greater, the coating layer includes LiF, and a resistance of the composite cathode active material is lower than that of the core.
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