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1.发明公开公开(公告)号：US20230361291A1
公开(公告)日：2023-11-09
申请号：US18306241
申请日：2023-04-25
发明人： Ji Yae DO , Jeong Bae YOON , Min Suk KANG , Hee Jun KWEON , Sang Bok KIM , Yong Hyun CHO , Dong Wook HA
IPC分类号： H01M4/505 , H01M4/525 , H01M10/052 , H01M4/131 , C01G53/00
CPC分类号： H01M4/505 , H01M4/525 , H01M10/052 , H01M4/131 , C01G53/50 , H01M2004/028
摘要： A cathode active material for a lithium secondary battery according to an embodiment of the present invention includes a lithium-transition metal oxide particle. The lithium-transition metal oxide particle has a FWHM ratio measured by an in-situ X-ray Diffraction spectroscopy (XRD) and defined by Equation 1 of 400% or less. Life-span properties of a lithium secondary battery can be improved by preventing deformation of a lattice structure and/or a crystal structure in the lithium-transition metal composite oxide particles.
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公开(公告)号：US20230178726A1
公开(公告)日：2023-06-08
申请号：US18074136
申请日：2022-12-02
发明人： Mi Jung NOH , Jeong Bae YOON , Je Nam CHOI , Sang Bok KIM , Jae Ho CHOI , Dong Wook HA
IPC分类号： H01M4/525 , H01M10/0525 , C01G53/00
CPC分类号： H01M4/525 , H01M10/0525 , C01G53/40 , C01G53/50 , H01M2004/028
摘要： A cathode active material precursor for a lithium secondary battery has a structure of a nickel composite hydroxide. A first peak intensity ratio represented by Equation 1 is 0.5 or more, and a second peak intensity ratio represented by Equation 2 is 0.7 or more. A cathode active material and a lithium secondary battery having a stabilized crystal structure are provided using the cathode active material precursor.
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3.发明公开公开(公告)号：US20230238526A1
公开(公告)日：2023-07-27
申请号：US18098697
申请日：2023-01-19
发明人： Sang Min PARK , Hee Jun KWEON , Myoung Lae KIM , Sang Bok KIM , Jung Moon SUNG , Keum Jung YOON , Tae Kyoung LEE , Ji Hoon CHOI
IPC分类号： H01M4/525 , H01M4/505 , H01M10/052
CPC分类号： H01M4/525 , H01M4/505 , H01M10/052 , H01M2004/028
摘要： A cathode active material for a lithium secondary battery according to an embodiment of the present invention includes a plurality of a lithium-transition metal composite oxide particle having a shape of a secondary particle in which a plurality of primary particles are aggregated. The lithium-transition metal composite oxide particle includes a lithium-molybdenum-containing portion having a hexagonal close-packed structure formed between the primary particles.
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公开(公告)号：US20230117843A1
公开(公告)日：2023-04-20
申请号：US17970271
申请日：2022-10-20
发明人： Sang Bok KIM , Sang Min PARK , Ji Hoon CHOI , Jung Moon SUNG , Sang Hye SHIN , Ji Sun LEE , Jae Young CHOI
IPC分类号： H01M4/485 , H01M4/36 , H01M4/04 , H01M10/052 , H01M4/58
摘要： Embodiments of the present invention provide a cathode active material for a lithium secondary battery. The cathode active material for a lithium secondary battery includes lithium-transition metal composite oxide particles, and a coating formed on each of the lithium-transition metal composite oxide particles. The coating includes a lithium-sulfur compound and a metal hydroxide. A residual lithium on a surface of the cathode active material is sufficiently removed to improve an ionic conductivity and low-resistance.
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公开(公告)号：US20230231113A1
公开(公告)日：2023-07-20
申请号：US18093815
申请日：2023-01-06
发明人： Ji Hoon CHOI , Hee Jun KWEON , Sang Bok KIM , Sang Min PARK , Ji Sun LEE , Jeong Hoon JEUN , Je Nam CHOI
IPC分类号： H01M4/36 , H01M10/052 , H01M4/525 , H01M4/505
CPC分类号： H01M4/366 , H01M10/052 , H01M4/525 , H01M4/505 , H01M2004/028
摘要： A cathode active material precursor for a lithium secondary battery is provided according to embodiments of the present invention. The cathode active material precursor for a lithium secondary battery includes a core including a first transition metal composite hydroxide, and a shell which is formed on the core and includes a second transition metal composite hydroxide in which the first transition metal composite hydroxide is doped with a doping metal including at least one of Group 4 to Group 12 metals, wherein the cathode active material precursor has a particle size distribution degree of 0.8 to 1.6 defined by Equation 1. Thereby, it is possible to suppress capacity degradation of the secondary battery due to doping while improving the structural stability of the cathode active material precursor.
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公开(公告)号：US20230155129A1
公开(公告)日：2023-05-18
申请号：US17985572
申请日：2022-11-11
发明人： Sang Min PARK , Hee Jun KWEON , Sang Bok KIM , Tae Kyoung LEE , Ji Hoon CHOI
IPC分类号： H01M4/58 , H01M4/525 , H01M4/505 , H01M10/0562
CPC分类号： H01M4/58 , H01M4/525 , H01M4/505 , H01M10/0562 , H01M2004/021
摘要： A cathode active material for a sulfide-based all-solid-state battery according to embodiments of the present invention includes a first lithium-transition metal composite oxide particle having a secondary particle structure that includes a plurality of primary particles therein. The first lithium-transition metal composite oxide particle includes a lithium-sulfur-containing portion formed between the primary particles.
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7.发明申请公开(公告)号：US20220376234A1
公开(公告)日：2022-11-24
申请号：US17864956
申请日：2022-07-14
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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公开(公告)号：US20210280856A1
公开(公告)日：2021-09-09
申请号：US17326461
申请日：2021-05-21
发明人： Mi Jung NOH , Jik Soo KIM , Sang Bok KIM , Ji Hoon CHOI , Kook Hyun HAN
IPC分类号： H01M4/36 , C01G53/00 , H01M4/485 , H01M4/525 , H01M10/0525
摘要： A cathode active material for a lithium secondary battery includes a lithium-aluminum-titanium oxide formed on a surface of a lithium metal oxide particle having a specific formula. The cathode active material may have an improved structural stability even in a high temperature condition.
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9.发明申请公开(公告)号：US20220259065A1
公开(公告)日：2022-08-18
申请号：US17672029
申请日：2022-02-15
申请人： SK ON CO., LTD.
发明人： Jik Soo KIM , Ji Hoon CHOI , Sang Bok KIM
IPC分类号： C01G53/00 , H01M10/0525
摘要： The present invention provides a cathode active material for a secondary battery, which includes a lithium metal oxide particle having a form of a secondary particle in which a plurality of primary particles are agglomerated, wherein the primary particles comprise a particle having a triangular shape which has a size of a minimum internal angle of 45° or more and a maximum height of 0.5 μm or more.
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10.发明公开公开(公告)号：US20240291019A1
公开(公告)日：2024-08-29
申请号：US18621104
申请日：2024-03-29
申请人： SK ON CO., LTD.
发明人： Sang Bok KIM , Jik Soo KIM , Jeong Bae YOON , Seung Ok LEE , Ji Hoon CHOI
IPC分类号： H01M10/0525 , H01M4/02 , H01M4/04 , H01M4/38 , H01M4/525
CPC分类号： H01M10/0525 , H01M4/0471 , H01M4/382 , H01M2004/028 , H01M4/525
摘要： A method of manufacturing a cathode active material for a lithium secondary battery according to embodiments of the present invention includes performing a first heat treatment on a first mixture of a transition metal precursor and a lithium precursor at a first calcination temperature to obtain a preliminary lithium-transition metal composite oxide particle; and performing a second heat treatment on a second mixture obtained by adding the lithium precursor to the preliminary lithium-transition metal composite oxide particle at a second calcination temperature which is lower than the first calcination temperature to form a lithium-transition metal composite oxide particle.
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