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公开(公告)号：US20220293935A1
公开(公告)日：2022-09-15
申请号：US17691423
申请日：2022-03-10
Applicant: SK ON CO., LTD.
Inventor： Kook Hyun Han , Ji Hoon Choi , Jik Soo Kim , Kwang Ho Lee
IPC: H01M4/525 , H01M4/505 , H01M4/04 , H01M10/0525
Abstract: 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.
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公开(公告)号：US12107256B2
公开(公告)日：2024-10-01
申请号：US18093215
申请日：2023-01-04
Applicant: SK ON CO., LTD.
Inventor： Sang Min Park , Tae Kyoung Lee , Sang Bok Kim , Jik Soo Kim , Sang Hye Shin , Yu Na Shim , Jeong Bae Yoon
IPC: H01M4/131 , H01M4/04 , H01M4/133 , H01M4/1391 , H01M4/1393 , H01M4/525 , H01M10/0525
CPC classification number: H01M4/131 , H01M4/0471 , H01M4/133 , H01M4/1391 , H01M4/1393 , H01M4/525 , H01M10/0525
Abstract: The cathode active material for a lithium secondary battery according to embodiments of the present invention includes lithium-transition metal composite oxide particles including a plurality of primary particles, and the lithium-transition metal composite oxide particles have a lithium-potassium-containing portion formed between the primary particles. Thereby, it is possible to improve life-span properties and capacity properties by preventing the layer structure deformation of the primary particles and removing residual lithium.
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3.发明公开公开(公告)号：US20240113277A1
公开(公告)日：2024-04-04
申请号：US18538239
申请日：2023-12-13
Applicant: SK On Co., Ltd.
Inventor： Sang Bok Kim , Ji Hoon Choi , Jik Soo Kim , Mi Jung Noh , Dong Il Jang , Dong Wook Ha
IPC: H01M4/131 , H01M4/04 , H01M4/1391 , H01M4/36 , H01M4/505 , H01M4/525 , H01M10/0525
CPC classification number: H01M4/131 , H01M4/0471 , H01M4/1391 , H01M4/366 , H01M4/505 , H01M4/525 , H01M10/0525
Abstract: 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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Patent Agency Ranking
4.发明授权公开(公告)号：US11888102B2
公开(公告)日：2024-01-30
申请号：US17014314
申请日：2020-09-08
Applicant: SK ON CO., LTD.
Inventor： Sang Bok Kim , Ji Hoon Choi , Jik Soo Kim , Mi Jung Noh , Dong Il Jang , Dong Wook Ha
IPC: H01M4/36 , H01M4/131 , H01M4/1391 , H01M10/0525 , H01M4/525 , H01M4/505 , H01M4/04
CPC classification number: H01M4/131 , H01M4/0471 , H01M4/1391 , H01M4/366 , H01M4/505 , H01M4/525 , H01M10/0525
Abstract: 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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5.发明公开公开(公告)号：US20230246181A1
公开(公告)日：2023-08-03
申请号：US18104799
申请日：2023-02-02
Applicant: SK ON CO., LTD.
Inventor： Jik Soo Kim , Mi Jung Noh , Jae Ho Choi
IPC: H01M4/505 , H01M10/0525 , H01M4/131 , H01M4/525 , C01G53/00
CPC classification number: H01M4/505 , H01M10/0525 , H01M4/131 , H01M4/525 , C01G53/50 , H01M2004/028
Abstract: A cathode active material for a lithium secondary battery according to an embodiment of the present invention includes a lithium-nickel composite metal oxide in which an oxidation number of nickel is 2.8 or more. The lithium-nickel composite metal oxide includes a first doping element having an oxidation number of +2 and a second doping element having an oxidation number of +4. A ratio of a molar ratio of the second doping element relative to a molar ratio of the first doping element is greater than 1 and less than 5.
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6.发明申请公开(公告)号：US20220293936A1
公开(公告)日：2022-09-15
申请号：US17691455
申请日：2022-03-10
Applicant: SK ON CO., LTD.
Inventor： Jae Ho Choi , Sang Bok Kim , Jik Soo Kim , Hyo Shin Kwak , Myoung Lae Kim , Joo Hyun Lee
Abstract: Provided is a cathode active material for a lithium secondary battery and a method of manufacturing the same. The cathode active material for a lithium secondary battery includes a lithium metal oxide particle and a water-soluble polymer, and may have a secondary particle structure in which the lithium metal oxide particle and the water-soluble polymer are aggregated.
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7.发明授权公开(公告)号：US11978893B2
公开(公告)日：2024-05-07
申请号：US18303577
申请日：2023-04-20
Applicant: SK On Co., Ltd.
Inventor： 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: H01M4/36 , C07D277/36 , C07D295/14 , H01M4/525 , H01M4/62 , H01M10/0525 , H01M10/62 , H01M4/02
CPC classification number: H01M4/366 , C07D277/36 , C07D295/14 , H01M4/525 , H01M4/628 , H01M10/0525 , H01M2004/028
Abstract: 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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8.发明公开公开(公告)号：US20230207778A1
公开(公告)日：2023-06-29
申请号：US18093215
申请日：2023-01-04
Applicant: SK On Co., Ltd.
Inventor： Sang Min Park , Tae Kyoung Lee , Sang Bok Kim , Jik Soo Kim , Sang Hye Shin , Yu Na Shim , Jeong Bae Yoon
IPC: H01M4/131 , H01M4/04 , H01M4/133 , H01M4/1391 , H01M4/1393 , H01M4/525 , H01M10/0525
CPC classification number: H01M4/131 , H01M4/0471 , H01M4/133 , H01M4/1391 , H01M4/1393 , H01M4/525 , H01M10/0525
Abstract: The cathode active material for a lithium secondary battery according to embodiments of the present invention includes lithium-transition metal composite oxide particles including a plurality of primary particles, and the lithium-transition metal composite oxide particles have a lithium-potassium-containing portion formed between the primary particles. Thereby, it is possible to improve life-span properties and capacity properties by preventing the layer structure deformation of the primary particles and removing residual lithium.
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