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1.发明申请公开(公告)号：US20220376234A1
公开(公告)日：2022-11-24
申请号：US17864956
申请日：2022-07-14
发明人： Sang Bok KIM , Jik Soo KIM , Hyo Shin KWAK , Myoung Lae KIM
摘要： A cathode active material for a lithium secondary battery includes a lithium metal oxide particle, and an organic poly-phosphate or an organic poly-phosphonate formed on at least portion of a surface of the lithium metal oxide particle. Chemical stability of the lithium metal oxide particle may be improved and surface residues may be reduced by the organic poly-phosphate or the organic poly-phosphonate.
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公开(公告)号：US20210280856A1
公开(公告)日：2021-09-09
申请号：US17326461
申请日：2021-05-21
发明人： Mi Jung NOH , Jik Soo KIM , Sang Bok KIM , Ji Hoon CHOI , Kook Hyun HAN
IPC分类号： H01M4/36 , C01G53/00 , H01M4/485 , H01M4/525 , H01M10/0525
摘要： A cathode active material for a lithium secondary battery includes a lithium-aluminum-titanium oxide formed on a surface of a lithium metal oxide particle having a specific formula. The cathode active material may have an improved structural stability even in a high temperature condition.
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3.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：US20230178726A1
公开(公告)日：2023-06-08
申请号：US18074136
申请日：2022-12-02
发明人： Mi Jung NOH , Jeong Bae YOON , Je Nam CHOI , Sang Bok KIM , Jae Ho CHOI , Dong Wook HA
IPC分类号： H01M4/525 , H01M10/0525 , C01G53/00
CPC分类号： H01M4/525 , H01M10/0525 , C01G53/40 , C01G53/50 , H01M2004/028
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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5.发明申请公开(公告)号：US20230102359A1
公开(公告)日：2023-03-30
申请号：US17960653
申请日：2022-10-05
发明人： Sang Bok KIM , Jik Soo Kim , Hyo Shin Kwak , Myoung Lae Kim
摘要： A cathode active material for a lithium secondary battery includes a lithium metal oxide particle, and an organic poly-phosphate or an organic poly-phosphonate formed on at least portion of a surface of the lithium metal oxide particle. Chemical stability of the lithium metal oxide particle may be improved and surface residues may be reduced by the organic poly-phosphate or the organic poly-phosphonate.
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公开(公告)号：US20220310997A1
公开(公告)日：2022-09-29
申请号：US17512548
申请日：2021-10-27
发明人： Mi Jung NOH , Jik Soo KIM , Jae Ho CHOI , Tae Kyoung LEE , Sang Bok KIM , Sang Min PARK
IPC分类号： H01M4/525 , H01M10/0525 , H01M4/505 , C01G53/00
摘要： A cathode active material for a lithium secondary battery according to embodiments of the present invention has a high-nickel composition and includes a lithium-nickel composite metal oxide particle in which lithium, nickel and a metal having an oxidation number of +2 are combined in a predetermined range. A cation disorder caused when a nickel ion is present at a lithium-ion site is reduced to improve structural stability of the cathode active material. An initial capacity and a battery efficiency of a lithium secondary battery can be improved using the cathode active material.
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7.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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8.发明申请公开(公告)号：US20230089562A1
公开(公告)日：2023-03-23
申请号：US17960600
申请日：2022-10-05
发明人： Sang Bok KIM , Jik Soo Kim , Hyo Shin Kwak , Myoung Lae Kim
摘要： A cathode active material for a lithium secondary battery includes a lithium metal oxide particle, and an organic poly-phosphate or an organic poly-phosphonate formed on at least portion of a surface of the lithium metal oxide particle. Chemical stability of the lithium metal oxide particle may be improved and surface residues may be reduced by the organic poly-phosphate or the organic poly-phosphonate.
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9.发明申请公开(公告)号：US20200168911A1
公开(公告)日：2020-05-28
申请号：US16692895
申请日：2019-11-22
发明人： Sang Bok KIM , Jik Soo KIM , Hyo Shin KWAK , Myoung Lae KIM
摘要： A cathode active material for a lithium secondary battery includes a lithium metal oxide particle, and an organic poly-phosphate or an organic poly-phosphonate formed on at least portion of a surface of the lithium metal oxide particle. Chemical stability of the lithium metal oxide particle may be improved and surface residues may be reduced by the organic poly-phosphate or the organic poly-phosphonate.
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10.发明公开公开(公告)号：US20230197934A1
公开(公告)日：2023-06-22
申请号：US18173789
申请日：2023-02-24
发明人： Sang Bok KIM , Sang Hye SHIN , Sang Min PARK , Tae Kyoung LEE , Myoung Lae KIM , Jeong Bae YOON , Jik Soo KIM , Ji Hoon CHOI
CPC分类号： H01M4/364 , H01M4/60 , H01M4/505 , H01M4/525 , H01M10/0525 , H01M2004/028
摘要： The cathode active material for a lithium secondary battery according to embodiments of the present invention includes a lithium-transition metal composite oxide particle including a plurality of primary particles, and the lithium-transition metal composite oxide particle includes a lithium-sulfur-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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