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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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2.发明公开公开(公告)号：US20240186512A1
公开(公告)日：2024-06-06
申请号：US18523629
申请日：2023-11-29
发明人： Min Suk KANG , Hyo Shik KIL , Ji Yae DO , Min Cheol BEAK
IPC分类号： H01M4/58 , H01M4/38 , H01M10/052
CPC分类号： H01M4/5825 , H01M4/382 , H01M10/052 , H01M2004/028
摘要： Cathode active materials for lithium secondary batteries and lithium secondary batteries including the cathode active materials are disclosed. In an embodiment, a cathode active material includes a lithium iron phosphate-based particle including a surface portion and a central portion, both of which includes vanadium (V). A total weight of the vanadium contained in the lithium iron phosphate-based particle includes a first weight amount of vanadium contained in the surface portion of the lithium iron phosphate-based particle and a second weight amount of vanadium contained in the central portion of the lithium iron phosphate-based particle, and the first weight amount is greater than the second weight amount.
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3.发明公开公开(公告)号：US20240186489A1
公开(公告)日：2024-06-06
申请号：US18343747
申请日：2023-06-29
发明人： Ji Yae DO , Min Suk KANG , Min Cheol BEAK , Kwang Ho LEE , Jae Young CHOI
CPC分类号： H01M4/366 , C01B25/45 , H01M4/133 , H01M4/136 , H01M4/5825 , H01M4/587 , H01M2004/028
摘要： A cathode active material for a lithium secondary battery according to an embodiment of the present disclosures a plurality of composite particles, each of which comprises a lithium metal phosphate particle, and a carbon coating formed on at least a portion of a surface of the lithium metal phosphate particle. A standard deviation of thickness values of the carbon coating measured by an X-ray photoelectron spectroscopy (XPS) for five different composite particles of the plurality of composite particles is 15 nm or less.
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4.发明公开公开(公告)号：US20240170654A1
公开(公告)日：2024-05-23
申请号：US18459432
申请日：2023-09-01
发明人： Min Suk KANG , Ji Yae DO , Min Cheol BEAK , Jung Hyun YUN , Kwang Ho LEE , Hyun Ji LEE
IPC分类号： H01M4/36 , H01M4/58 , H01M4/583 , H01M10/052
CPC分类号： H01M4/366 , H01M4/5825 , H01M4/583 , H01M10/052 , H01M2004/028
摘要： A cathode active material for a lithium secondary battery according to an embodiment includes a plurality of a lithium metal oxide particle that include a core containing a lithium iron phosphate-based compound and being doped with at least one metal element of Ti, V and Mn; and a carbon coating formed of the core. A ratio of an intensity of a peak corresponding to PO4 relative to an intensity of a D band measured by a Raman spectroscopy analysis is in a range from 0.10 to 0.33.
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5.发明公开公开(公告)号：US20240154118A1
公开(公告)日：2024-05-09
申请号：US18501932
申请日：2023-11-03
发明人： Ji Yae DO , Min Suk KANG , Min Cheol BEAK , Kwang Ho LEE , Wan Uk CHOI
IPC分类号： H01M4/58 , C01B25/45 , H01M4/131 , H01M10/052
CPC分类号： H01M4/5825 , C01B25/45 , H01M4/131 , H01M10/052 , H01M2004/021
摘要： Cathode active materials for lithium secondary batteries and lithium secondary batteries including the cathode active materials are disclosed. In some implementations, a cathode active material for a lithium secondary battery includes a lithium metal phosphate particle having a crystallite size in a range from 150 nm to 450 nm in a direction of a crystallographic plane (020) as measured by an X-ray diffraction (XRD) analysis. In some implementations, a lithium secondary battery includes a cathode including a cathode active material layer that includes a cathode active material for a lithium secondary battery, and an anode facing the cathode. In some implementations, an electrode crystallite size ratio defined by Equation 4 is in a range from 0.5 to 0.9.
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6.发明公开公开(公告)号：US20240222624A1
公开(公告)日：2024-07-04
申请号：US18601671
申请日：2024-03-11
申请人： SK ON CO., LTD.
发明人： Soo Ho KIM , Min Gu KANG , Min Suk KANG
CPC分类号： H01M4/525 , C01G53/50 , H01M4/131 , H01M4/505 , H01M10/0525 , C01P2002/74 , H01M2004/021
摘要： A cathode active material for a lithium secondary battery according to an embodiment of the present invention includes a lithium composite oxide particle that contains lithium and transition metals including an excess amount of nickel. The lithium composite oxide particle satisfies a predetermined XRD peak area relation. A lithium secondary battery using the cathode active material and providing improved stability and durability is provided.
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7.发明公开公开(公告)号：US20240105938A1
公开(公告)日：2024-03-28
申请号：US18189220
申请日：2023-03-24
申请人： SK ON CO., LTD.
发明人： Min Suk KANG , Ji Yae DO , Min Cheol BEAK , Sang Wook LEE , Yong Hyun CHO
IPC分类号： H01M4/58 , H01M4/36 , H01M4/62 , H01M10/052
CPC分类号： H01M4/5825 , H01M4/364 , H01M4/625 , H01M10/052 , H01M2004/028
摘要： A cathode active material for a lithium secondary battery according to an embodiment of the present disclosure includes first lithium metal phosphate particles, each first lithium metal phosphate particle having a secondary particle shape formed by aggregation of primary particles and having an average particle diameter (D50) in a range from 5 μm to 10 μm, second lithium metal phosphate particles, each having a single particle and having an average particle diameter in a range from 1 μm to 3 μm, and third lithium metal phosphate particles, each having a single particle shape and having an average particle diameter less than 1 μm.
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公开(公告)号：US20220020984A1
公开(公告)日：2022-01-20
申请号：US17377024
申请日：2021-07-15
发明人： Min Suk KANG , Min Gu KANG , Soo Ho KIM
IPC分类号： H01M4/525 , H01M4/36 , H01M10/0525
摘要： A cathode for a lithium secondary battery includes a cathode current collector, a first cathode active material layer including a first cathode active material particle, and a second cathode active material layer including a second cathode active material particle. The first cathode active material layer and the second cathode active material layer are sequentially stacked from the cathode current collector. The first cathode active material particle and the second cathode active material particle have different compositions or particle structures from each other. The first cathode active material particle and the second cathode active material particle include lithium metal oxides containing nickel. The second cathode active material particle has a single particle shape and has a particle size distribution satisfying a specific range relation.
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公开(公告)号：US20220384792A1
公开(公告)日：2022-12-01
申请号：US17828534
申请日：2022-05-31
申请人： SK ON CO., LTD.
发明人： Yong Hyun CHO , Ji Yae DO , Yoon Ji LEE , Min Suk KANG
IPC分类号： H01M4/36 , H01M10/052 , H01M4/525 , H01M4/505 , C01G53/00
摘要： A cathode active material for a lithium secondary battery includes a core portion comprising a lithium metal oxide particle, and a coating layer at least partially covering a surface of the core portion and including a lithium boron composite oxide. The lithium boron composite oxide is included in an amount from 100 ppm to 1,500 ppm based on a total weight of the cathode active material. A lithium secondary battery having improved structural stability and electrical property is provided using the cathode active material.
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公开(公告)号：US20220085432A1
公开(公告)日：2022-03-17
申请号：US17474684
申请日：2021-09-14
发明人： Sang Han LEE , Yong Hyun CHO , Min Gu KANG , Min Suk KANG , Yoon Ji LEE
IPC分类号： H01M10/52 , H01M4/13 , H01M4/62 , H01M10/0525
摘要： A lithium secondary battery according to an embodiment of the present invention includes an electrode assembly including a separation layer, and a plurality of cathodes and a plurality of anodes separated by the separation layer and repeatedly stacked, and a gas adsorption layer coated on a single surface of an outermost anode among the plurality of anodes.
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