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公开(公告)号：EP4194407A1
公开(公告)日：2023-06-14
申请号：EP22211747.5
申请日：2022-12-06
发明人： NOH, Mi Jung , YOON, Jeong Bae , CHOI, Je Nam , KIM, Sang Bok , CHOI, Jae Ho , HA, Dong Wook
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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2.发明公开
公开(公告)号：EP4276074A1
公开(公告)日：2023-11-15
申请号：EP23172166.3
申请日：2023-05-08
发明人： DO, Ji Yae , YOON, Jeong Bae , KANG, Min Suk , KWEON, Hee Jun , KIM, Sang Bok , CHO, Yong Hyun , HA, Dong Wook
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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3.发明公开
公开(公告)号：EP4382488A1
公开(公告)日：2024-06-12
申请号：EP23192205.5
申请日：2023-08-18
申请人： SK On Co., Ltd.
发明人： KWEON, Hee Jun , YOON, Jeong Bae , CHOI, Ji Hoon
CPC分类号： Y02E60/10 , C01G53/006 , C01P2002/3020130101 , C01P2002/7420130101 , C01P2002/7620130101 , C01P2002/7720130101 , H01M4/00
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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公开(公告)号：EP4201890A1
公开(公告)日：2023-06-28
申请号：EP22211760.8
申请日：2022-12-06
申请人： SK On Co., Ltd.
发明人： NOH, Mi Jung , YOON, Jeong Bae , KWEON, Hee Jun , CHOI, Je Nam
IPC分类号： C01G53/00
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 ctive material and a lithium secondary battery having a stabilized crystal structure are provided using the cathode active material precursor.
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公开(公告)号：EP4057381A1
公开(公告)日：2022-09-14
申请号：EP22160612.2
申请日：2022-03-07
申请人： SK On Co., Ltd.
发明人： YOO, Kyung Bin , NOH, Mi Jung , YOON, Jeong Bae
摘要： A lithium secondary battery includes a cathode including a cathode active material, and an anode facing the cathode. The cathode active material includes a lithium composite oxide particle having a nickel molar ratio of 0.8 or more among elements other than lithium and oxygen, and a reversible lithium-titanium oxide selectively present in a charging region of 4.1 V or more and less than 4.3 V. Life-span stability is improved by the reversible lithium-titanium oxide at a high-voltage region.
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公开(公告)号：EP3919444A2
公开(公告)日：2021-12-08
申请号：EP21173265.6
申请日：2021-05-11
发明人： LEE, Sang Han , KANG, Min Gu , YOON, Jeong Bae , CHO, Yong Hyun
摘要： A lithium secondary battery includes a cathode including a cathode active material including a lithium-transition metal composite oxide particle having a crystal grain size of greater than 500 nm measured through X-ray diffraction (XRD) analysis, and an anode disposed to face the cathode. The present invention provides a lithium secondary battery having improved life-span characteristics while suppressing gas generation due to crack of the particles by controlling the crystal grain size of the lithium-transition metal composite oxide particles.
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7.发明公开
公开(公告)号：EP3974391A1
公开(公告)日：2022-03-30
申请号：EP21196694.0
申请日：2021-09-14
发明人： KIM, Sang Bok , KIM, Jik Soo , YOON, Jeong Bae , LEE, Seung Ok , CHOI, Ji Hoon
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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8.发明公开
公开(公告)号：EP3957607A1
公开(公告)日：2022-02-23
申请号：EP21191380.1
申请日：2021-08-13
发明人： LEE, Sang Han , KANG, Min Gu , YOON, Jeong Bae , CHO, Yong Hyun
摘要： A cathode active material for a lithium secondary battery includes a lithium-transition metal composite oxide particle having a lattice strain (η) of 0.18 or less, which is calculated by applying Williamson-Hall method defined by Equation 1 to XRD peaks measured through XRD analysis, and having an XRD peak intensity ratio of 8.9% or less, which is defined by Equation 2. By controlling the lattice strain and XRD peak intensity ratio of the lithium-transition metal composite oxide particle, a lithium secondary battery with improved life-span characteristics as well as output characteristics is provided.
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公开(公告)号：EP3919445A1
公开(公告)日：2021-12-08
申请号：EP21177496.3
申请日：2021-06-02
发明人： LEE, Sang Han , KANG, Min Gu , YOON, Jeong Bae , CHO, Yong Hyun
摘要： A cathode active material for a lithium secondary battery including a lithium-transition metal composite oxide particle is provided. A crystal grain size of the lithium-transition metal composite oxide particle measured by an XRD analysis is 250 nm or more, and an XRD peak intensity ratio of the lithium-transition metal composite oxide particle is 9.8% or less. A lithium secondary battery including the lithium-transition metal composite oxide particle and having improved life-span and rate capability is provided.
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10.发明公开
公开(公告)号：EP4057382A1
公开(公告)日：2022-09-14
申请号：EP22160613.0
申请日：2022-03-07
发明人： PARK, Sang Min , LEE, Tae Kyoung , KIM, Sang Bok , KIM, Jik Soo , SHIN, Sang Hye , SHIM, Yu Na , YOON, Jeong Bae
摘要： The cathode active material for a lithium secondary battery according to embodiments of the present invention includes lithium-transition metal composite oxide particles including a plurality of primary particles, and the lithium-transition metal composite oxide particles have a lithium-potassium-containing portion formed between the primary particles. Thereby, it is possible to improve life-span properties and capacity properties by preventing the layer structure deformation of the primary particles and removing residual lithium.
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