公开(公告)号：US11594727B2

公开(公告)日：2023-02-28

申请号：US16755688

申请日：2018-11-21

申请人： LG Chem, Ltd.

发明人： Tae Gu Yoo ,  Younguk Park ,  Jintae Hwang ,  Wang Mo Jung ,  Sungbin Park

IPC分类号： H01M4/00 ,  H01M4/525 ,  C01G53/00 ,  H01M4/505 ,  H01M10/0525 ,  H01M4/02

摘要： Exemplary embodiments of positive electrode active materials in the form of single particles, and a method of preparing each of them, are provided.
The single particles of the exemplary embodiments include single particles of a nickel-based lithium composite metal oxide, having a plurality of crystal grains, each having a size of 180 nm to 300 nm, as analyzed by a Cu Kα X-ray (X-rα). The single particles include a metal doped in the crystal lattice thereof. One embodiment includes a surface coating.
The total content of the metal doped in the crystal lattice thereof and the metal of the metal oxide coated on the surface thereof is controlled in the range of 2500 ppm to 6000 ppm.

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.

公开(公告)号：US11600820B2

公开(公告)日：2023-03-07

申请号：US16494503

申请日：2018-09-07

申请人： LG Chem, Ltd.

发明人： Gi Beom Han ,  Jintae Hwang ,  Wang Mo Jung ,  Min Kyu You ,  Chi Ho Jo ,  Sungbin Park ,  Inseong Ju ,  Hyuck Hur ,  Younguk Park ,  Tae Gu Yoo

IPC分类号： H01M4/505 ,  H01M4/36 ,  H01M4/525 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/0562 ,  H01M4/02

摘要： A positive electrode active material contains a lithium-rich lithium manganese-based oxide, wherein the lithium manganese-based oxide has a composition of the following chemical formula (1), and wherein a lithium ion conductive glass-ceramic solid electrolyte layer containing at least one selected from the group consisting of thio-LISICON(thio-lithium super ionic conductor), LISICON(lithium super ionic conductor), Li2S—SiS2—Li4SiO4, and Li2S—SiS2—P2S5—Lil is formed on the surface of the lithium manganese-based oxide particle: Li1−xMyMn1−x−yO2−zQz  (1) wherein, 0

公开(公告)号：US11424447B2

公开(公告)日：2022-08-23

申请号：US16496167

申请日：2018-11-22

申请人： LG Chem, Ltd.

发明人： Younguk Park ,  Tae Gu Yoo ,  Jintae Hwang ,  Wang Mo Jung ,  Sungbin Park

IPC分类号： H01B1/08 ,  H01M4/525 ,  H01M4/485 ,  H01M4/04 ,  H01M4/505 ,  H01M10/0525 ,  H01M4/02

摘要： A positive electrode active material for a lithium secondary battery is provided having a secondary particle formed by agglomerating a plurality of polycrystalline primary particles including a lithium composite metal oxide of Chemical Formula 1, wherein an average crystallite size of the primary particle is 180 to 400 nm, a particle size D50 of the primary particle is 1.5 to 3μm, and the primary particle is doped or surface-coated with at least one element M selected from the group consisting Al, Ti, Mg, Zr, Y, Sr, and B in an amount of 3,800 to 7,000 ppm: Lia(NixMnyCozAw)O2+b   [Chemical Formula 1].

公开(公告)号：US20190221845A1

公开(公告)日：2019-07-18

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 ,  H01M4/133 ,  H01M4/134

CPC分类号： H01M4/525 ,  C01G51/42 ,  C01P2002/20 ,  C01P2002/52 ,  C01P2002/72 ,  C01P2002/89 ,  C01P2004/84 ,  C01P2006/40 ,  H01M4/131 ,  H01M4/133 ,  H01M4/134 ,  H01M4/36 ,  H01M10/0525 ,  H01M2004/027 ,  H01M2004/028 ,  Y02E60/122 ,  Y02T10/7011

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.

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.

公开(公告)号：US20180062173A1

公开(公告)日：2018-03-01

申请号：US15689385

申请日：2017-08-29

申请人： LG Chem, Ltd.

发明人： Chi Ho Jo ,  Sungbin Park ,  Younguk Park ,  Bo Ram Lee ,  Hyuck Hur ,  Wang Mo Jung

IPC分类号： H01M4/525 ,  C01G51/00

摘要： Provided is a positive electrode active material particle for a secondary battery, including a core part containing lithium cobalt oxide; and a shell part that is located on the surface of the core part and contains lithium-deficient cobalt oxide which is deficient in lithium because a molar ratio of lithium to cobalt is 0.9 or less.

公开(公告)号：US11056682B2

公开(公告)日：2021-07-06

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 ,  H01M4/36 ,  H01M4/525 ,  H01M10/0525 ,  H01M4/131 ,  H01M4/1397 ,  H01M4/136 ,  H01M4/1391 ,  H01M4/58 ,  H01M10/0567 ,  H01M4/02 ,  H01M10/052

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, 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.

公开(公告)号：US20200295367A1

公开(公告)日：2020-09-17

申请号：US16755688

申请日：2018-11-21

申请人： LG Chem, Ltd.

发明人： Tae Gu Yoo ,  Younguk Park ,  Jintae Hwang ,  Wang Mo Jung ,  Sungbin Park

IPC分类号： H01M4/525 ,  H01M10/0525 ,  H01M4/505 ,  C01G53/00

摘要： Exemplary embodiments of positive electrode active materials in the form of single particles, and a method of preparing each of them, are provided.The single particles of the exemplary embodiments include The single particles are single particles of a nickel-based lithium composite metal oxide, having a plurality of crystal grains, each having a size of 180 nm to 300 nm, as analyzed by a Cu Kα X-ray (X-rα5). The single particles include a metal doped in the crystal lattice thereof. One embodiment includes a surface coating. The total content of the metal doped in the crystal lattice thereof and the metal of the metal oxide coated on the surface thereof is controlled in the range of 2500 ppm to 6000 ppm.

公开(公告)号：US10559824B2

公开(公告)日：2020-02-11

申请号：US15689385

申请日：2017-08-29

申请人： LG Chem, Ltd.

发明人： Chi Ho Jo ,  Sungbin Park ,  Younguk Park ,  Bo Ram Lee ,  Hyuck Hur ,  Wang Mo Jung

IPC分类号： H01M4/525 ,  C01G51/00 ,  H01M10/0525

摘要： Provided is a positive electrode active material particle for a secondary battery, including a core part containing lithium cobalt oxide; and a shell part that is located on the surface of the core part and contains lithium-deficient cobalt oxide which is deficient in lithium because a molar ratio of lithium to cobalt is 0.9 or less.