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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：US20230178728A1
公开(公告)日：2023-06-08
申请号：US18076152
申请日：2022-12-06
发明人： Mi Jung NOH , Jeong Bae YOON , Hee Jun KWEON , Je Nam CHOI
IPC分类号： H01M4/525 , H01M10/052
CPC分类号： H01M4/525 , H01M10/052 , H01M2004/021
摘要： A cathode active material precursor for a lithium secondary battery has a structure of a nickel composite hydroxide. An oxygen position in a Z-axis direction measured by a Rietveld method in a space group P-3m crystal structure based on an X-ray diffraction (XRD) analysis is 0.200 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：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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6.发明公开公开(公告)号：US20240204185A1
公开(公告)日：2024-06-20
申请号：US18444154
申请日：2024-02-16
申请人： SK On Co., Ltd.
发明人： Yeong Bin YOO , Hee Jun KWEON , Tae Kyoung LEE , Ji Hoon CHOI , Kook Hyun HAN
IPC分类号： H01M4/525 , H01M4/36 , H01M4/505 , H01M10/0525
CPC分类号： H01M4/525 , H01M4/366 , H01M4/505 , H01M10/0525
摘要： The cathode active material according to exemplary embodiments includes lithium metal oxide particle including a layered crystal structure and a cubic crystal structure, wherein the lithium metal oxide particle contains 80 mol % or more of nickel based on a total number of moles of all elements except for lithium and oxygen, and the lithium metal oxide particle includes the cubic crystal structure only in a region having a thickness of less than 200 nm from a surface thereof when analyzing a crystal structure thereof by a high-resolution transmission electron microscopy.
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公开(公告)号：US20230187620A1
公开(公告)日：2023-06-15
申请号：US18076508
申请日：2022-12-07
申请人： SK ON CO., LTD.
发明人： Ji Hoon CHOI , Hee Jun KWEON , Jik Soo KIM , Sung Soon PARK
CPC分类号： H01M4/366 , H01M4/505 , H01M4/049 , C01G53/50 , C01P2006/40 , C01P2004/84 , C01P2002/50 , C01P2004/50 , C01P2002/85 , C01P2004/03 , C01P2004/04 , H01M2004/028
摘要： A cathode active material for a lithium secondary battery according to an embodiment of the present invention includes a lithium composite oxide, and a lithium-aluminum-sulfur-boron oxide formed on a surface of the lithium composite oxide. A lithium secondary battery including the cathode active material and having improved stability and electrical properties is provided.
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公开(公告)号：US20220293920A1
公开(公告)日：2022-09-15
申请号：US17695382
申请日：2022-03-15
申请人： SK ON CO., LTD.
发明人： Hee Jun KWEON , Sung Soon PARK , Jik Soo KIM , Tae Kyoung LEE , Ji Hoon CHOI , Dong Wook HA
IPC分类号： H01M4/36 , H01M4/52 , H01M4/38 , H01M10/052 , C01F7/043
摘要： A cathode active material for a secondary battery includes a lithium metal oxide particle having a secondary particle structure in which a plurality of primary particles are aggregated, a first coating portion formed on at least a portion of a surface of the lithium metal oxide particle, the first coating portion including a first metal, and a second coating portion formed on at least a portion of an interface between the primary particles, the second coating portion including a second metal. A secondary battery including the cathode active material is provided.
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9.发明申请公开(公告)号：US20220173390A1
公开(公告)日：2022-06-02
申请号：US17540072
申请日：2021-12-01
发明人： Yeong Bin YOO , Hee Jun KWEON , Tae Kyoung LEE , Ji Hoon CHOI , Kook Hyun HAN
IPC分类号： H01M4/525 , H01M4/36 , H01M4/505 , H01M10/0525
摘要： The cathode active material according to exemplary embodiments includes lithium metal oxide particle including a layered crystal structure and a cubic crystal structure, wherein the lithium metal oxide particle contains 80 mol % or more of nickel based on a total number of moles of all elements except for lithium and oxygen, and the lithium metal oxide particle includes the cubic crystal structure only in a region having a thickness of less than 200 nm from a surface thereof when analyzing a crystal structure thereof by a high-resolution transmission electron microscopy.
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10.发明公开公开(公告)号：US20240308876A1
公开(公告)日：2024-09-19
申请号：US18677903
申请日：2024-05-30
申请人： SK ON CO., LTD.
发明人： Hee Jun KWEON , Jeong Bae YOON , Ji Hoon CHOI
IPC分类号： C01G53/00 , H01M4/525 , H01M10/0525
CPC分类号： C01G53/50 , H01M4/525 , H01M10/0525 , C01P2002/60 , C01P2002/74 , C01P2002/76
摘要： A cathode active material for a lithium secondary battery has a structure of a lithium-nickel-based metal oxide. A crystal size in a (104) plane defined by Equation 1 is less than 200 nm. A thickness of a TM slab measured by a Rietveld method in a crystal structure of a space group R-3m by an X-ray diffraction (XRD) analysis is 2.15 Å or less. A thickness of a Li slab thickness measured by the Rietveld method in the crystal structure of the space group R-3m by the XRD analysis is 2.585 Å or more.
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