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公开(公告)号：US11611076B2
公开(公告)日：2023-03-21
申请号：US16480832
申请日：2018-09-19
申请人： LG Chem, Ltd.
发明人： Min Kyu You , Chi Ho Jo , Sung Bin Park , Hyuck Hur , Jin Tae Hwang , Wang Mo Jung
摘要： The present invention provides a positive electrode active material precursor for a secondary battery which includes primary particles of Co3O4 or CoOOH, wherein the primary particle contains a doping element in an amount of 3,000 ppm or more, and has an average particle diameter (D50) of 15 μm or more, and a positive electrode active material for a secondary battery which includes particles of a lithium cobalt-based oxide, wherein the primary particle contains a doping element in an amount of 2,500 ppm or more, and has an average particle diameter (D50) of 15 μm or more.
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公开(公告)号：US11183691B2
公开(公告)日：2021-11-23
申请号：US16242712
申请日：2019-01-08
申请人： LG Chem, Ltd.
发明人： Sungbin Park , Younguk Park , Jiyoung Park , Bo Ram Lee , Chi Ho Jo , Hyuck Hur , Wang Mo Jung
IPC分类号： H01M4/525 , H01M4/131 , C01G51/00 , H01M4/36 , H01M4/133 , H01M4/134 , H01M10/0525 , H01M4/02
摘要： Provided are a metal element-doped positive electrode active material for a high voltage and a preparation method thereof. The positive electrode active material may include a lithium cobalt oxide having a layered crystal structure; and a metal element (M) incorporated into the lithium cobalt oxide in an amount of 0.2 parts by weight to 1 part by weight with respect to 100 parts by weight of the lithium cobalt oxide, wherein the metal element (M) does not form a chemical bond with the elements of the lithium cobalt oxide, and wherein the layered crystal structure in maintained at a positive electrode potential of more than 4.5 V (based on Li potential) when fully charged.
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公开(公告)号：US20210296647A1
公开(公告)日：2021-09-23
申请号：US17341950
申请日：2021-06-08
申请人： LG Chem, Ltd.
发明人： Sung Bin Park , Young Uk Park , Ji Young Park , Bo Ram Lee , Chi Ho Jo , Young Cheol Choi , Hyuck Hur , Wang Mo Jung
IPC分类号： H01M4/525 , H01M4/04 , H01M4/1391 , H01M4/36 , C01G51/00 , H01M10/052
摘要： The present invention provides a positive active material for a rechargeable lithium battery, the active material including a dopant and having a crystalline structure in which metal oxide layers (MO layers) including metals and oxygen and reversible lithium layers are repeatedly stacked, wherein in a lattice configured by oxygen atoms of the MO layers adjacent to each other, the dopant time of charge, thereby forming a lithium trap and/or lithium dumbbell structure.
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公开(公告)号：US20200220173A1
公开(公告)日：2020-07-09
申请号：US16647307
申请日：2018-08-29
申请人： LG Chem, Ltd.
发明人： Chi Ho Jo , Min Kyu You , Sung Bin Park , Hyuck Hur , Jin Tae Hwang , Wang Mo Jung
IPC分类号： H01M4/525 , H01M4/04 , H01M4/36 , H01M4/131 , H01M10/0525 , H01M10/0569
摘要： A positive electrode active material for a secondary battery is provided. The positive electrode active material being a lithium cobalt-based oxide includes a doping element M. A lithium cobalt-based oxide particle containing the doping element M in an amount of 3,000 ppm or more, wherein in a bulk portion corresponding to 90% of a core side among the radius from a core of the particle to a surface thereof, the doping element M in the lithium cobalt-based oxide particle is contained at a constant concentration, and in a surface portion from the surface of the particle to 100 nm in a core direction, the doping element M is contained at a concentration equal to or higher than that in the bulk portion and has a concentration in which the concentration thereof is gradient gradually decreased in the core direction from the surface of the particle.
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公开(公告)号：US20190027750A1
公开(公告)日：2019-01-24
申请号：US16070588
申请日：2017-07-14
申请人： LG Chem, Ltd.
发明人： Sung Bin Park , Young Uk Park , Ji Young Park , Bo Ram Lee , Chi Ho Jo , Young Cheol Choi , Hyuck Hur , Wang Mo Jung
IPC分类号： H01M4/525 , H01M10/052 , H01M4/36 , H01M4/1391
摘要： The present invention provides a positive active material for a rechargeable lithium battery, the active material including a dopant and having a crystalline structure in which metal oxide layers (MO layers) including metals and oxygen and reversible lithium layers are repeatedly stacked, wherein in a lattice configured by oxygen atoms of the MO layers adjacent to each other, the dopant time of charge, thereby forming a lithium trap and/or lithium dumbbell structure.
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公开(公告)号：US11114654B2
公开(公告)日：2021-09-07
申请号：US16311110
申请日：2018-03-21
申请人： LG CHEM, LTD.
发明人： Bo-Ram Lee , Sung-Bin Park , Ji-Young Park , Chi-Ho Jo , Jung-Min Han , Hyuck Hur , Wang-Mo Jung
摘要： Disclosed are a negative electrode active material including lithium titanium oxide particles, wherein the lithium titanium oxide particles have an average particle diameter (D50) of 0.5-9 μm, a specific surface area of 3-7 m2/g, and a pellet density of 1.7 g/cc or more under a pressure of 64 MPa, and a lithium secondary battery including the same.
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公开(公告)号：US10930931B2
公开(公告)日：2021-02-23
申请号：US15765402
申请日：2017-06-28
申请人： LG Chem, Ltd.
发明人： Chi Ho Jo , Bo Ram Lee , Sung Bin Park , Hyuck Hur , Young Uk Park , Wang Mo Jung
IPC分类号： H01M4/525 , H01M4/04 , H01M4/131 , H01M4/62 , H01M4/1391 , H01M4/36 , H01M4/88 , H01M10/0525 , H01M4/02
摘要： Provided are positive electrode active material particles for a secondary battery which include a lithium cobalt oxide, a coating layer including element A and formed on a surface of particles of the lithium cobalt oxide, and a dopant containing element B which is substituted in the lithium cobalt oxide, wherein the element A and the element B are each independently at least one selected from the group consisting of aluminum (Al), titanium (Ti), magnesium (Mg), zirconium (Zr), barium (Ba), calcium (Ca), tantalum (Ta), niobium (Nb), and molybdenum (Mo), and a molar ratio of the element A in the coating layer:the element B of the dopant is greater than 1:1 to 10:1.
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公开(公告)号：US20190312260A1
公开(公告)日：2019-10-10
申请号：US16308667
申请日：2017-07-27
申请人： LG Chem, Ltd.
发明人： Younguk Park , Chi Ho Jo , Bo Ram Lee , Sungbin Park , Hyuck Hur , Wang Mo Jung
IPC分类号： H01M4/1315 , H01M4/13915 , H01M10/0525 , H01M4/525 , H01M4/36
摘要： Provided is a positive electrode active material particle including a core that includes lithium cobalt oxide represented by the following Chemical Formula 1; and a shell that is located on the surface of the core and includes lithium cobalt phosphate represented by the following Chemical Formula 2, wherein the shell has a tetrahedral phase: LiaCo(1-x)MxO2-yAy (1) wherein M is at least one of Ti, Mg, Zn, Si, Al, Zr, V, Mn, Nb, and or Ni, A is oxygen-substitutional halogen, and 0.95≤a≤1.05, 0≤x≤0.2, 0≤y≤0.2, and 0≤x+y≤0.2, LibCoPO4 (2) wherein 0≤b≤1.
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公开(公告)号：US20190148711A1
公开(公告)日：2019-05-16
申请号：US16097049
申请日：2018-01-26
申请人： LG Chem, Ltd.
发明人： Chi Ho Jo , Sungbin Park , Jiyoung Park , Bo Ram Lee , Jungmin Han , Hyuck Hur , Wang Mo Jung
IPC分类号： H01M4/131 , H01M10/052 , C01G51/00 , H01M4/505 , H01M4/525
摘要： The present invention relates to a positive electrode active material for a lithium secondary battery including a lithium cobalt oxide having a core-shell structure, wherein the lithium cobalt-doped oxide of the core and the lithium cobalt-doped oxide of the shell include each independently three kinds of dopants and satisfy specific conditions, a method for producing the same, and a positive electrode and a secondary battery containing the positive electrode active material.
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公开(公告)号：US20180316015A1
公开(公告)日：2018-11-01
申请号：US15770102
申请日：2017-03-30
申请人： LG Chem, Ltd.
发明人： Bo Ram Lee , Sung Bin Park , Young Uk Park , Chi Ho Jo , Hyuck Hur , Wang Mo Jung
IPC分类号： H01M4/62 , H01M4/36 , H01M4/525 , H01M10/0525 , H01M10/0568 , C01G51/00
CPC分类号： C01G51/00 , H01M2/10 , H01M4/36 , H01M4/525 , H01M10/0525 , H01M10/0568
摘要： Provided is a positive electrode active material particle including a core containing lithium cobalt oxide represented by the following Chemical Formula 1; and a coating layer containing boron (B) and fluorine (F), which is coated on the surface of the core: Li1+xCo1−xO2 (1)
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