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.

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.

公开(公告)号：US20200266433A1

公开(公告)日：2020-08-20

申请号：US16647935

申请日：2018-09-19

申请人： LG Chem, Ltd.

发明人： Dong Hun Lee ,  Hye Lim Jeon ,  Sang Wook Lee ,  Eun Sol Lho ,  Wang Mo Jung ,  Min Suk Kang ,  So Ra Baek ,  Ji Young Park

IPC分类号： H01M4/485 ,  H01M4/58 ,  H01M10/0525

摘要： Provided are various embodiments of a positive electrode for a secondary battery, which in one embodiment includes a first positive electrode material mixture layer formed on a positive electrode collector, and a second positive electrode material mixture layer formed on the first positive electrode material mixture layer, wherein the first positive electrode material mixture layer has an operating voltage of 4.25 V to 6.0 V and includes an active material for overcharge which generates lithium and gas during charge; a method of preparing such a positive electrode for a secondary battery; and a lithium secondary battery including such a positive electrode.

公开(公告)号：US10535874B2

公开(公告)日：2020-01-14

申请号：US15363134

申请日：2016-11-29

申请人： LG Chem, Ltd.

发明人： Bo Ram Lee ,  Ji Young Park ,  Sun Sik Shin ,  Wang Mo Jung

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

摘要： A positive electrode active material for a secondary battery is provided. The positive electrode active material is a secondary particle including primary particles of a lithium composite metal oxide that contains nickel, cobalt, and manganese, wherein the manganese content in the lithium composite metal oxide exceeds 50 at % with respect to the sum content of nickel, cobalt, and manganese, and the primary particle is doped with one or two or more dopant elements selected from the group consisting of Nb, Sn, Mo, and Ta, the dopant element content being higher in a surface region of the primary particle than in the interior of the primary particle, and the dopant element concentration being 500 to 5,000 ppm with respect to the total weight of the positive electrode active material. In addition, a lithium secondary battery which includes the positive electrode active material is provided.

公开(公告)号：US11081695B2

公开(公告)日：2021-08-03

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 ,  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.

公开(公告)号：US20170155146A1

公开(公告)日：2017-06-01

申请号：US15363134

申请日：2016-11-29

申请人： LG Chem, Ltd.

发明人： Bo Ram Lee ,  Ji Young Park ,  Sun Sik Shin ,  Wang Mo Jung

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

CPC分类号： H01M4/525 ,  C01G53/50 ,  C01P2004/03 ,  C01P2004/51 ,  C01P2006/12 ,  C01P2006/40 ,  H01M4/505 ,  H01M10/0525

摘要： A positive electrode active material for a secondary battery is provided. The positive electrode active material is a secondary particle including primary particles of a lithium composite metal oxide that contains nickel, cobalt, and manganese, wherein the manganese content in the lithium composite metal oxide exceeds 50 at % with respect to the sum content of nickel, cobalt, and manganese, and the primary particle is doped with one or two or more dopant elements selected from the group consisting of Nb, Sn, Mo, and Ta, the dopant element content being higher in a surface region of the primary particle than in the interior of the primary particle, and the dopant element concentration being 500 to 5,000 ppm with respect to the total weight of the positive electrode active material. In addition, a lithium secondary battery which includes the positive electrode active material is provided.

公开(公告)号：US11611078B2

公开(公告)日：2023-03-21

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.

公开(公告)号：US11569501B2

公开(公告)日：2023-01-31

申请号：US16647935

申请日：2018-09-19

申请人： LG Chem, Ltd.

发明人： Dong Hun Lee ,  Hye Lim Jeon ,  Sang Wook Lee ,  Eun Sol Lho ,  Wang Mo Jung ,  Min Suk Kang ,  So Ra Baek ,  Ji Young Park

IPC分类号： H01M4/485 ,  H01M10/0525 ,  H01M4/58 ,  H01M4/02

摘要： Provided are various embodiments of a positive electrode for a secondary battery, which in one embodiment includes a first positive electrode material mixture layer formed on a positive electrode collector, and a second positive electrode material mixture layer formed on the first positive electrode material mixture layer, wherein the first positive electrode material mixture layer has an operating voltage of 4.25 V to 6.0 V and includes an active material for overcharge which generates lithium and gas during charge; a method of preparing such a positive electrode for a secondary battery; and a lithium secondary battery including such a positive electrode.