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11.发明授权公开(公告)号：US12107258B2
公开(公告)日：2024-10-01
申请号：US17960600
申请日：2022-10-05
发明人： Sang Bok Kim , Jik Soo Kim , Hyo Shin Kwak , Myoung Lae Kim
IPC分类号： H01M4/1391 , H01M4/04 , H01M4/36 , H01M4/485 , H01M4/505 , H01M4/525 , H01M4/62 , H01M4/02 , H01M10/0525
CPC分类号： H01M4/1391 , H01M4/0471 , H01M4/366 , H01M4/485 , H01M4/505 , H01M4/525 , H01M4/62 , H01M4/628 , H01M2004/021 , H01M2004/028 , H01M10/0525
摘要： A cathode active material for a lithium secondary battery includes a lithium metal oxide particle, and an organic poly-phosphate or an organic poly-phosphonate formed on at least portion of a surface of the lithium metal oxide particle. Chemical stability of the lithium metal oxide particle may be improved and surface residues may be reduced by the organic poly-phosphate or the organic poly-phosphonate.
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12.发明授权公开(公告)号：US12002950B2
公开(公告)日：2024-06-04
申请号：US17475058
申请日：2021-09-14
发明人： Jik Soo Kim , Sang Bok Kim , Hyo Shin Kwak , Myoung Lae Kim , Se Rah Moon , Jin Seok Seo , Mi Jung Noh , Duck Chul Hwang
IPC分类号： H01M4/36 , C07D277/36 , C07D295/14 , H01M4/52 , H01M4/525 , H01M4/62 , H01M10/05 , H01M10/0525 , H01M4/02
CPC分类号： H01M4/366 , C07D277/36 , C07D295/14 , H01M4/525 , H01M4/628 , H01M10/0525 , H01M2004/028
摘要： A cathode active material for a lithium secondary battery includes a lithium metal oxide particle and a thio-based compound formed on at least portion of a surface of the lithium metal oxide particle. The thio-based compound has a double bond that contains a sulfur atom. Chemical stability of the lithium metal oxide particle may be improved and surface residues may be reduced by the thio-based compound.
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13.发明授权公开(公告)号：US11502291B2
公开(公告)日：2022-11-15
申请号：US16692895
申请日：2019-11-22
发明人： Sang Bok Kim , Jik Soo Kim , Hyo Shin Kwak , Myoung Lae Kim
摘要： A cathode active material for a lithium secondary battery includes a lithium metal oxide particle, and an organic poly-phosphate or an organic poly-phosphonate formed on at least portion of a surface of the lithium metal oxide particle. Chemical stability of the lithium metal oxide particle may be improved and surface residues may be reduced by the organic poly-phosphate or the organic poly-phosphonate.
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14.发明申请公开(公告)号：US20220216469A1
公开(公告)日：2022-07-07
申请号：US17569861
申请日：2022-01-06
发明人： Sang Bok Kim , Tae Kyoung Lee , Mi Jung Noh , Ji Hoon Choi , Dong Wook Ha
IPC分类号： H01M4/525 , H01M4/505 , H01M4/04 , H01M10/0525
摘要： A cathode active material for a lithium secondary battery is provided. According to embodiments of the present invention, the cathode active material includes a lithium-transition metal composite oxide particle including a plurality of primary particles. The lithium-transition metal composite oxide particle has a lithium-boron-containing portion formed between the primary particles. Thereby, it is possible to improve life-span properties and capacity properties by removing residual lithium.
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15.发明申请公开(公告)号：US20210074996A1
公开(公告)日：2021-03-11
申请号：US17014314
申请日：2020-09-08
发明人： Sang Bok Kim , Ji Hoon Choi , Jik Soo Kim , Mi Jung Noh , Dong Il Jang , Dong Wook Ha
IPC分类号： H01M4/131 , H01M4/1391 , H01M4/134 , H01M4/1395 , H01M4/04 , H01M4/525 , H01M4/505 , H01M4/36 , H01M10/0525
摘要： In a method of manufacturing a cathode active material for a lithium secondary battery, a preliminary lithium metal oxide particle is prepared. The preliminary lithium metal oxide particle is cleaned using a boron compound cleaning solution. A cathode active material for a lithium secondary particle includes a lithium metal oxide particle where a ratio of a B+ peak intensity relative to a sum of peak intensities of Li+, B+ and LiB+ fragments by a TOF-SIMS analysis is in a range from 0.03% to 1.5%.
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