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1.发明公开
公开(公告)号：EP4397627A1
公开(公告)日：2024-07-10
申请号：EP23220233.3
申请日：2023-12-27
发明人： PARK, Young Uk , KANG, Min Gu , KIM, Seung Hyun , JEUN, Jeong Hoon , CHOI, Jae Young , CHOI, Je Nam
CPC分类号： C01P2002/5420130101 , H01M4/505 , C01G53/006 , C01G53/50 , C01P2004/8020130101 , H01M4/525 , H01M10/052
摘要： A cathode active material for a lithium secondary battery includes a lithium-transition metal oxide particle having a shape of a single particle and having a Mn oxidation number ratio of 0.23 or less. The Mn oxidation number ratio is calculated from a deconvolution of a Mn2p spectrum of the lithium-transition metal oxide particle by an X-ray photoelectron spectroscopy (XPS) analysis.
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2.发明公开
公开(公告)号：EP4368580A1
公开(公告)日：2024-05-15
申请号：EP23197866.9
申请日：2023-09-18
申请人： SK On Co., Ltd.
发明人： KIM, Hong Ki , KANG, Min Gu , KIM, Seung Hyun , DO, Young Hoon , PARK, Young Uk , LEE, Yoon Ji , CHO, Yong Hyun
摘要： A cathode active material for a lithium secondary battery according to an embodiment includes lithium metal oxide particles containing lithium and nickel, and containing a small amount of cobalt or no cobalt. An average particle diameter, a modulus and a hardness of the lithium metal oxide particles are adjusted to satisfy a desired relation. A lithium secondary battery has improved high-temperature storage properties, structural stability and high power properties.
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3.发明公开
公开(公告)号：EP4187630A1
公开(公告)日：2023-05-31
申请号：EP22209300.7
申请日：2022-11-24
申请人： SK On Co., Ltd.
发明人： KANG, Min Gu , LEE, Sang Han , CHO, Yong Hyun
IPC分类号： H01M4/04 , H01M4/36 , H01M10/0525
摘要： A cathode for a lithium secondary battery is provided. The cathode for a lithium secondary battery includes a current collector, and a first cathode active material layer formed by being pressed on at least one surface of the current collector. The first cathode active material layer includes first lithium-transition metal composite oxide particles. A pressed ratio of the current collector is 25% or less, and an electrode density is 3.4 g/cc or more.
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公开(公告)号：EP4053945A3
公开(公告)日：2022-09-28
申请号：EP22156654.0
申请日：2022-02-14
申请人： SK On Co., Ltd.
发明人： KANG, Min Gu , LEE, Sang Han , CHO, Yong Hyun
摘要： A cathode for a lithium secondary battery includes a cathode current collector, and a cathode active material layer comprising a first cathode active material layer and a second cathode active material layer sequentially stacked on the cathode current collector. The first cathode active material layer includes first cathode active material particles having a secondary particle structure, and the second cathode active material layer includes second cathode active material particles having a single particle shape. A ratio of a SPAN value of the second cathode active material particles relative to a SPAN value of the first cathode active material particles is in a range from 2 to 4.5.
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5.发明公开
公开(公告)号：EP4371943A1
公开(公告)日：2024-05-22
申请号：EP23162974.2
申请日：2023-03-20
申请人： SK On Co., Ltd.
发明人： LEE, Yoon Ji , KIM, Seung Hyun , KIM, Hong Ki , KANG, Min Gu
IPC分类号： C01G53/00
CPC分类号： C01G53/50 , C01P2006/4020130101
摘要： Embodiments of the present invention provide a cathode active material for a lithium secondary battery including lithium-transition metal composite oxide particles. The lithium-transition metal composite oxide particles have a (113) plane FWHM change rate of 75% or less, which is measured through in-situ X-ray diffraction (XRD) and defined by Equation 1. Thereby, lifespan characteristics of the lithium secondary battery may be improved by preventing a lattice structure and/or a crystal structure in lithium-transition metal composite oxide particles from being deformed.
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6.发明公开
公开(公告)号：EP4064390A1
公开(公告)日：2022-09-28
申请号：EP22156653.2
申请日：2022-02-14
申请人： SK On Co., Ltd.
发明人： KANG, Min Gu , KANG, Min Suk , KIM, Soo Ho
摘要： A cathode for a lithium secondary battery includes a cathode current collector, and a cathode active material layer comprising a first cathode active material layer and a second cathode active material layer sequentially stacked on the cathode current collector. The first cathode active material layer includes a first cathode active material particle having a secondary particle structure, and the second cathode active material layer includes a second cathode active material particle having a single particle shape. An adhesive force of the first cathode active material layer to a surface of the cathode current collector is greater than an adhesive force of the second cathode active material layer to a surface of the first cathode active material layer.
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公开(公告)号：EP4053945A2
公开(公告)日：2022-09-07
申请号：EP22156654.0
申请日：2022-02-14
申请人： SK On Co., Ltd.
发明人： KANG, Min Gu , LEE, Sang Han , CHO, Yong Hyun
IPC分类号： H01M4/505 , H01M4/525 , H01M4/62 , H01M10/0525
摘要： A cathode for a lithium secondary battery includes a cathode current collector, and a cathode active material layer comprising a first cathode active material layer and a second cathode active material layer sequentially stacked on the cathode current collector. The first cathode active material layer includes first cathode active material particles having a secondary particle structure, and the second cathode active material layer includes second cathode active material particles having a single particle shape. A ratio of a SPAN value of the second cathode active material particles relative to a SPAN value of the first cathode active material particles is in a range from 2 to 4.5.
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