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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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2.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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3.发明申请公开(公告)号：US20220173390A1
公开(公告)日：2022-06-02
申请号：US17540072
申请日：2021-12-01
发明人： Yeong Bin YOO , Hee Jun KWEON , Tae Kyoung LEE , Ji Hoon CHOI , Kook Hyun HAN
IPC分类号： H01M4/525 , H01M4/36 , H01M4/505 , H01M10/0525
摘要： The cathode active material according to exemplary embodiments includes lithium metal oxide particle including a layered crystal structure and a cubic crystal structure, wherein the lithium metal oxide particle contains 80 mol % or more of nickel based on a total number of moles of all elements except for lithium and oxygen, and the lithium metal oxide particle includes the cubic crystal structure only in a region having a thickness of less than 200 nm from a surface thereof when analyzing a crystal structure thereof by a high-resolution transmission electron microscopy.
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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
发明人： Sung Soon PARK , Ji Hoon CHOI , Ji Sun LEE , Tae Kyoung LEE , Dong ll JANG
摘要： 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：US20230155129A1
公开(公告)日：2023-05-18
申请号：US17985572
申请日：2022-11-11
发明人： Sang Min PARK , Hee Jun KWEON , Sang Bok KIM , Tae Kyoung LEE , Ji Hoon CHOI
IPC分类号： H01M4/58 , H01M4/525 , H01M4/505 , H01M10/0562
CPC分类号： H01M4/58 , H01M4/525 , H01M4/505 , H01M10/0562 , H01M2004/021
摘要： A cathode active material for a sulfide-based all-solid-state battery according to embodiments of the present invention includes a first lithium-transition metal composite oxide particle having a secondary particle structure that includes a plurality of primary particles therein. The first lithium-transition metal composite oxide particle includes a lithium-sulfur-containing portion formed between the primary particles.
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公开(公告)号：US20220367851A1
公开(公告)日：2022-11-17
申请号：US17512440
申请日：2021-10-27
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
IPC分类号： H01M4/36 , H01M4/505 , H01M4/525 , H01M4/60 , H01M10/0525
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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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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