公开(公告)号：US11031632B2

公开(公告)日：2021-06-08

申请号：US15866654

申请日：2018-01-10

申请人： LG Chem, Ltd.

发明人： Dong Hun Lee ,  Dae Jin Lee ,  Ji Hoon Ryu ,  Gi Beom Han ,  Dong Hwi Kim ,  Wang Mo Jung ,  Sang Wook Lee ,  Eun Sol Lho

IPC分类号： H01M4/131 ,  H01M10/54 ,  H01M10/052 ,  H01M4/505 ,  H01M10/42 ,  H01M10/52 ,  C22B7/00 ,  C22B1/00 ,  H01M50/691

摘要： The present invention relates to a method for recovering a positive electrode active material from a lithium secondary battery including: 1) separating a positive electrode into a collector and a positive electrode part; 2) removing an organic substance by firing the separated positive electrode part; 3) washing the fired resultant and removing remaining fluorine (F); 4) adding a lithium-containing material into the washed resultant and firing to recover a lithium transition metal oxide.

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.

公开(公告)号：US20180212282A1

公开(公告)日：2018-07-26

申请号：US15866654

申请日：2018-01-10

申请人： LG Chem, Ltd.

发明人： Dong Hun Lee ,  Dae Jin Lee ,  Ji Hoon Ryu ,  Gi Beom Han ,  Dong Hwi Kim ,  Wang Mo Jung ,  Sang Wook Lee ,  Eun Sol Lho

IPC分类号： H01M10/42 ,  H01M10/52 ,  H01M2/36 ,  H01M10/052

CPC分类号： H01M10/4242 ,  C22B1/005 ,  C22B7/001 ,  H01M2/364 ,  H01M4/131 ,  H01M10/052 ,  H01M10/52 ,  H01M10/54 ,  Y02W30/84

摘要： The present invention relates to a method for recovering a positive electrode active material from a lithium secondary battery including: 1) separating a positive electrode into a collector and a positive electrode part; 2) removing an organic substance by firing the separated positive electrode part; 3) washing the fired resultant and removing remaining fluorine (F); 4) adding a lithium-containing material into the washed resultant and firing to recover a lithium transition metal oxide.

公开(公告)号：US20210305566A1

公开(公告)日：2021-09-30

申请号：US17263383

申请日：2020-01-31

申请人： LG Chem, Ltd.

发明人： So Ra Baek ,  Eun Sol Lho ,  Wang Mo Jung ,  Sang Wook Lee ,  Eun Jo

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

摘要： A positive electrode active material for a secondary battery which includes a nickel-based lithium composite transition metal oxide including nickel (Ni), wherein the lithium composite transition metal oxide satisfies Equation 1 and Equation 2 below 80 nm≤crystallite sizeFWHM≤150 nm   [Equation 1] Δ size(|crystallite sizeIB−crystallite sizeFWHM|)≤20   [Equation 2] wherein, in Equation 1 and Equation 2, crystallite sizeFWHM is a crystallite size obtained by calculating from X-ray diffraction (XRD) data using a full width at half maximum (FWHM) method, and crystallite sizeIB is a crystallite size obtained by calculating from XRD data using an integral breadth (IB) method.

公开(公告)号：US20210151754A1

公开(公告)日：2021-05-20

申请号：US16771139

申请日：2019-01-23

申请人： LG Chem, Ltd.

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

IPC分类号： H01M4/525 ,  H01M4/505 ,  H01M4/36 ,  H01M4/04 ,  H01M10/0525

摘要： A positive electrode active material for a secondary battery includes a lithium composite transition metal oxide including nickel (Ni), cobalt (Co), and manganese (Mn), and a glassy coating layer formed on surfaces of particles of the lithium composite transition metal oxide, wherein, in the lithium composite transition metal oxide, an amount of the nickel (Ni) in a total amount of transition metals is 60 mol % or more, and an amount of the manganese (Mn) is greater than an amount of the cobalt (Co), and the glassy coating layer includes a glassy compound represented by Formula 1. LiaM1bOc  [Formula 1] wherein, M1 is at least one selected from the group consisting of boron (B), aluminum (Al), silicon (Si), titanium (Ti), and phosphorus (P), and 1≤a≤4, 1≤b≤8, and 1≤c≤20.

公开(公告)号：US20200083524A1

公开(公告)日：2020-03-12

申请号：US16611126

申请日：2018-11-06

申请人： LG Chem, Ltd.

发明人： So Ra Baek ,  Wang Mo Jung ,  Min Suk Kang ,  Sang Wook Lee ,  Eun Sol Lho ,  Wen Xiu Wang

IPC分类号： H01M4/1315 ,  H01M10/0525 ,  C01G51/00 ,  H01M4/525

摘要： The present disclosure relates to a positive electrode material including a spinel-structured lithium manganese-based first positive electrode active material and a lithium nickel-manganese-cobalt-based second positive electrode active material, wherein the first positive electrode active material includes a lithium manganese oxide represented by Formula 1 and a coating layer which is disposed on a surface of the lithium manganese oxide, the second positive electrode active material is represented by Formula 2, and an average particle diameter of the second positive electrode active material is greater than an average particle diameter of the first positive electrode active material, and a positive electrode and a lithium secondary battery which include the positive electrode material: Li1+aMn2-bM1bO4-cAc  [Formula 1] Li1+x[NiyCozMnwM2v]O2-pBp  [Formula 2]

公开(公告)号：US11916233B2

公开(公告)日：2024-02-27

申请号：US17263383

申请日：2020-01-31

申请人： LG Chem, Ltd.

发明人： So Ra Baek ,  Eun Sol Lho ,  Wang Mo Jung ,  Sang Wook Lee ,  Eun Jo

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

CPC分类号： H01M4/525 ,  C01G53/50 ,  H01M4/505 ,  H01M10/0525 ,  C01P2002/70 ,  C01P2004/51 ,  H01M2004/021 ,  H01M2004/028

摘要： A positive electrode active material for a secondary battery which includes a nickel-based lithium composite transition metal oxide including nickel (Ni), wherein the lithium composite transition metal oxide satisfies Equation 1 and Equation 2 below

80 nm≤crystallite sizeFWHM≤150 nm  [Equation 1]

Δsize(|crystallite sizeIB−crystallite sizeFWHM|)≤20  [Equation 2]



wherein, in Equation 1 and Equation 2, crystallite sizeFWHM is a crystallite size obtained by calculating from X-ray diffraction (XRD) data using a full width at half maximum (FWHM) method, and crystallite sizeIB is a crystallite size obtained by calculating from XRD data using an integral breadth (IB) method.

公开(公告)号：US11870070B2

公开(公告)日：2024-01-09

申请号：US16771139

申请日：2019-01-23

申请人： LG Chem, Ltd.

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

IPC分类号： H01M4/525 ,  H01M4/04 ,  H01M4/36 ,  H01M4/505 ,  H01M10/0525 ,  H01M4/13915 ,  H01M4/131 ,  H01M4/1315 ,  H01M4/1391 ,  H01M4/62 ,  C01G53/00 ,  C01B35/12 ,  H01M4/02

CPC分类号： H01M4/525 ,  C01B35/121 ,  C01G53/50 ,  H01M4/0471 ,  H01M4/131 ,  H01M4/1315 ,  H01M4/1391 ,  H01M4/13915 ,  H01M4/366 ,  H01M4/505 ,  H01M4/628 ,  H01M10/0525 ,  C01P2004/80 ,  C01P2006/40 ,  C01P2006/80 ,  H01M2004/028 ,  Y02E60/10

摘要： A positive electrode active material for a secondary battery includes a lithium composite transition metal oxide including nickel (Ni), cobalt (Co), and manganese (Mn), and a glassy coating layer formed on surfaces of particles of the lithium composite transition metal oxide, wherein, in the lithium composite transition metal oxide, an amount of the nickel (Ni) in a total amount of transition metals is 60 mol % or more, and an amount of the manganese (Mn) is greater than an amount of the cobalt (Co), and the glassy coating layer includes a glassy compound represented by Formula 1.

LiaM1bOc  [Formula 1]



wherein, M1 is at least one selected from the group consisting of boron (B), aluminum (Al), silicon (Si), titanium (Ti), and phosphorus (P), and 1≤a≤4, 1≤b≤8, and 1≤c≤20.

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.