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1.发明公开公开(公告)号：US20240194860A1
公开(公告)日：2024-06-13
申请号：US18510647
申请日：2023-11-16
Applicant: SK INNOVATION CO., LTD. , SK ON CO., LTD.
Inventor： Yeong Bin YOO , Sung Soon PARK , Keum Jung YOON , Jong Hwa KIM , Dong Il JANG
CPC classification number: H01M4/366 , C01G53/50 , H01M4/38 , H01M4/485 , H01M4/505 , H01M4/525 , H01M4/5825 , H01M10/052 , H01M2004/028
Abstract: A cathode active material for a lithium secondary battery includes a lithium-transition metal oxide particle containing phosphorus introduced into the particle, and a coating formed on at least a portion of a surface of the lithium-transition metal oxide particle. The coating includes a phosphorus-containing compound. A content of phosphorus introduced into the lithium-transition metal oxide particle is in a range from 15 wt % to 30 wt % based on a sum of a weight of phosphorus introduced into the lithium-transition metal oxide particle and a weight of phosphorus contained in the coating.
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公开(公告)号：US20240282951A1
公开(公告)日：2024-08-22
申请号：US18427836
申请日：2024-01-31
Applicant: SK ON CO., LTD. , SK INNOVATION CO., LTD.
Inventor： Yeong Bin YOO , Sung Soon PARK , Jong Hwa KIM , Kyung Bin YOO , Ju Wook LEE
CPC classification number: H01M4/525 , C01G53/006 , C01G53/50 , H01M4/131 , H01M4/505 , H01M10/052 , C01P2002/52 , C01P2004/50 , C01P2006/12 , C01P2006/14 , C01P2006/40 , H01M2004/021 , H01M2004/028
Abstract: A cathode active material precursor for a lithium secondary battery includes nickel and at least one metal except for nickel. The cathode active material precursor includes primary particles having a major axis length of 500 nm or less and an aspect ratio in a range from 1.0 to 3.0. A volume ratio of micropores having a pore diameter of 2 nm or less relative to a total pore volume is 1.4% or less.
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公开(公告)号：US20230187618A1
公开(公告)日：2023-06-15
申请号：US18075000
申请日：2022-12-05
Applicant: SK ON CO., LTD. , SK INNOVATION CO., LTD.
Inventor： Sung Soon PARK , Ji Hoon CHOI , Ji Sun LEE , Tae Kyoung LEE , Dong ll JANG
Abstract: A cathode active material for a lithium secondary battery according to exemplary embodiments may include lithium metal oxide particles; and a coating layer which is formed on surfaces of the lithium metal oxide particles and contains a first metal and a second metal, wherein the coating layer may include a region having a predetermined tendency that the concentrations of the first metal and the second metal are changed. In addition, a method of manufacturing the cathode active material for a lithium secondary battery is provided.
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公开(公告)号：US20250054954A1
公开(公告)日：2025-02-13
申请号：US18789706
申请日：2024-07-31
Applicant: SK ON CO., LTD.
Inventor： Sung Soon PARK , Jong Hwa KIM , Yeong Bin YOO , Sang Bok KIM
IPC: H01M4/36 , H01M4/02 , H01M4/525 , H01M4/62 , H01M10/0525
Abstract: A cathode active material for a lithium secondary battery includes a coating element and lithium-nickel metal oxide particles. A coating area defined as (AC/ANi)*100 1 is 25% or more. AC is an area of a region where a content of the coating element is 1.6 wt % or more based on a total weight of the lithium-nickel metal oxide particles in a quantitative map (Q-map) image obtained through a scanning electron microscope-energy dispersive X-ray spectroscopy (SEM-EDS), and ANi is an area of a region where nickel is present in the Q-map image obtained through the SEM-EDS.
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公开(公告)号：US20250023044A1
公开(公告)日：2025-01-16
申请号：US18904095
申请日：2024-10-02
Applicant: SK ON CO., LTD.
Inventor： Sung Soon PARK , Ji Hoon CHOI , Jik Soo KIM , Kwang Ho LEE , Jeong Hoon JEUN
IPC: H01M4/525 , H01M4/02 , H01M4/36 , H01M10/0525
Abstract: The cathode active material according to embodiments of the present invention includes a lithium composite oxide particle having a form of secondary particle in which a plurality of primary particle are aggregated, wherein the primary particles respectively include a lithium conduction pathway through which lithium ions are diffused. Wherein the primary particles include a first particle, and the first particle has an angle of 45° to 90° formed by a direction from a center of the first particle to a center of the lithium composite oxide particle and a direction of the lithium conduction pathway included in the first particle, wherein a ratio of the number of the first particles among the primary particles located on a surface of the lithium composite oxide particle is 20% or more.
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Patent Agency Ranking
公开(公告)号：US20230187620A1
公开(公告)日：2023-06-15
申请号：US18076508
申请日：2022-12-07
Applicant: SK ON CO., LTD.
Inventor： Ji Hoon CHOI , Hee Jun KWEON , Jik Soo KIM , Sung Soon PARK
CPC classification number: H01M4/366 , H01M4/505 , H01M4/049 , C01G53/50 , C01P2006/40 , C01P2004/84 , C01P2002/50 , C01P2004/50 , C01P2002/85 , C01P2004/03 , C01P2004/04 , H01M2004/028
Abstract: 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
Applicant: SK ON CO., LTD.
Inventor： Hee Jun KWEON , Sung Soon PARK , Jik Soo KIM , Tae Kyoung LEE , Ji Hoon CHOI , Dong Wook HA
IPC: H01M4/36 , H01M4/52 , H01M4/38 , H01M10/052 , C01F7/043
Abstract: 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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公开(公告)号：US20220077458A1
公开(公告)日：2022-03-10
申请号：US17464882
申请日：2021-09-02
Applicant: SK INNOVATION CO., LTD.
Inventor： Sung Soon PARK , Jik Soo KIM , Ji Hoon CHOI
IPC: H01M4/36 , H01M4/505 , H01M4/525 , H01M4/485 , H01M10/0525
Abstract: A cathode active material for a lithium secondary battery according to embodiments of the present invention includes a lithium composite oxide containing sodium, and a coating formed on the surface of the lithium composite oxide. The coating contains sodium and aluminum. Sodium is distributed to a depth of 35 nm or more from a surface of the cathode active material. Thus, electrical and thermal properties of a lithium secondary battery are improved.
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公开(公告)号：US20220013781A1
公开(公告)日：2022-01-13
申请号：US17468764
申请日：2021-09-08
Applicant: SK INNOVATION CO., LTD.
Inventor： Ji Hoon CHOI , Sang Bok KIM , Jik Soo KIM , Hee Jun KWEON , Sung Soon PARK
IPC: H01M4/58 , H01M4/525 , H01M10/0525 , H01M4/505 , H01M4/04
Abstract: A cathode active material for a lithium secondary battery of embodiments of the present invention includes a lithium composite oxide, a first coating part formed on a surface of the lithium composite oxide and containing aluminum, and a second coating part formed on the first coating part and containing boron. Thereby, stability and electrical characteristics of the secondary battery may be improved.
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公开(公告)号：US20210399302A1
公开(公告)日：2021-12-23
申请号：US17224760
申请日：2021-04-07
Applicant: SK INNOVATION CO., LTD.
Inventor： Ji Hoon CHOI , Sang Bok KIM , Jik Soo KIM , Hee Jun KWEON , Sung Soon PARK
IPC: H01M4/58 , H01M10/0525 , H01M4/525 , H01M4/505 , H01M4/04
Abstract: A cathode active material for a lithium secondary battery of embodiments of the present invention includes a lithium composite oxide, a first coating part formed on a surface of the lithium composite oxide and containing aluminum, and a second coating part formed on the first coating part and containing boron. Thereby, stability and electrical characteristics of the secondary battery may be improved.
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