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公开(公告)号：US20240097112A1
公开(公告)日：2024-03-21
申请号：US18275038
申请日：2022-02-25
Applicant: LG Energy Solution, Ltd.
Inventor： Dong Hun Lee , Hak Yoon Kim , So Ra Baek , Hyuck Hur , Dong Hwi Kim , Hyeong Il Kim , Seul Ki Chae , Wang Mo Jung
IPC: H01M4/36 , H01M4/505 , H01M4/525 , H01M10/0525
CPC classification number: H01M4/366 , H01M4/505 , H01M4/525 , H01M10/0525 , H01M2004/028
Abstract: A positive electrode for a lithium secondary battery includes a positive electrode collector, a first positive electrode active material layer formed on the positive electrode collector and includes a first positive electrode active material, and a second positive electrode active material layer formed on the first positive electrode active material layer and includes a second positive electrode active material. The first positive electrode active material and the second positive electrode active material include a lithium nickel-cobalt-based oxide in which an amount of nickel among total metallic components excluding lithium is 80 atm % or more, the first positive electrode active material has a molar ratio of nickel to cobalt of 18 or more, and the second positive electrode active material has a molar ratio of nickel to cobalt of less than 18.
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公开(公告)号：US12126020B2
公开(公告)日：2024-10-22
申请号：US17922833
申请日：2022-01-28
Applicant: LG Energy Solution, Ltd.
Inventor： Dong Hwi Kim , Hak Yoon Kim , So Ra Baek , Hyuck Hur , Hyeong Il Kim , Seul Ki Chae , Wang Mo Jung , Dong Hun Lee
IPC: H01M4/525 , H01M4/02 , H01M10/052
CPC classification number: H01M4/525 , H01M10/052 , H01M2004/021 , H01M2004/028
Abstract: A positive electrode and a lithium secondary including the same is disclosed herein. In some embodiments, the positive electrode includes a positive electrode current collector, a first positive electrode active material layer and a second positive electrode active material layer sequentially stacked on the positive electrode current collector, wherein the first positive electrode active material layer and the second positive electrode active material layer include a bimodal positive active material, the first positive electrode active material layer includes small-diameter particles in the form of single particles, and the second positive electrode active material layer includes small-diameter particles in the form of secondary particles. The positive electrode has improved capacity, efficiency, lifespan, output properties, and thermal stability.
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公开(公告)号：US20250079458A1
公开(公告)日：2025-03-06
申请号：US18724047
申请日：2023-02-10
Applicant: LG Energy Solution, Ltd.
Inventor： Hyuck Hur , Sin Young Park , Gi Beom Han , Dong Hwi Kim , Min Kwak , Seulki Chae , Kang Joon Park , Wang Mo Jung
Abstract: A positive electrode active material powder includes overlithiated manganese-based oxide particles, which are represented by [Formula 1] and are in the form of a single particle composed of one nodule or a pseudo-single particle that is a composite of 2 to 30 nodules. LiaNibCocMndMeO2 [Formula 1] wherein 1
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公开(公告)号：US20250038168A1
公开(公告)日：2025-01-30
申请号：US18715900
申请日：2022-12-21
Applicant: LG Energy Solution, Ltd.
Inventor： So Ra Baek , Kang Joon Park , Wang Mo Jung , Sin Young Park , Hyuck Hur , Dong Hwi Kim , Min Kwak , Seul Ki Chae
IPC: H01M4/04 , H01M4/02 , H01M4/36 , H01M4/525 , H01M10/0525
Abstract: A method of manufacturing a lithium secondary battery includes (1) mixing a transition metal precursor and a lithium source material and then sintering the mixture to prepare a lithium composite transition metal oxide, (2) mixing the lithium composite transition metal oxide with a cobalt-containing raw material and heat-treating the mixture at 550° C. to 700° C. to form a cobalt coating layer on the oxide, (3) mixing the lithium composite transition metal oxide on which the cobalt coating layer is formed with a boron-containing raw material and heat-treating the mixture at 400° C. to 500° C. to prepare a positive electrode active material including a boron coating layer, (4) applying the positive electrode active material onto a positive electrode current collector to prepare a positive electrode, and (5) assembling the positive electrode, the negative electrode including a silicon-based negative electrode active material, and a separator, and injecting an electrolyte.
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公开(公告)号：US20240030414A1
公开(公告)日：2024-01-25
申请号：US18265560
申请日：2021-12-07
Applicant: LG Energy Solution, Ltd.
Inventor： Seulki Chae , Hakyoon Kim , Sora Baek , Hyuck Hur , Dong Hwi Kim , Hyeongil Kim , Wang Mo Jung , Donghun Lee
CPC classification number: H01M4/366 , H01M4/48 , H01M10/052 , H01M4/131 , H01M4/525 , H01M4/505 , C01G53/006 , H01M2004/028
Abstract: Disclosed is a positive electrode material for a lithium secondary battery capable of improving the problems of resistance and lifetime deterioration of the battery by forming a thin and uniform metal oxide on the surface of the lithium nickel cobalt manganese-based positive electrode active material, and a method for preparing the same and a lithium secondary battery comprising the same. The method of preparing the positive electrode material for the lithium secondary battery comprises a method of coating a metal oxide on the surface of a lithium nickel cobalt manganese-based positive electrode active material through a chemical vapor deposition. The method includes placing the lithium nickel cobalt manganese-based positive electrode active material in a deposition apparatus and supplying a metal oxide precursor and a carrier gas, and the lithium nickel cobalt manganese-based positive electrode active material is stirred during deposition.
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Patent Agency Ranking
6.发明公开公开(公告)号：US20240021788A1
公开(公告)日：2024-01-18
申请号：US18038515
申请日：2021-12-17
Applicant: LG Energy Solution, Ltd.
Inventor： So Ra Baek , Hak Yoon Kim , Hyuck Hur , Dong Hwi Kim , Hyeong Il Kim , Seul Ki Chae , Wang Mo Jung , Dong Hun Lee
CPC classification number: H01M4/364 , H01M4/505 , H01M4/525 , C01G53/50 , H01M2004/028
Abstract: A bimodal positive electrode active material includes a first lithium transition metal oxide and a second lithium transition metal oxide having an average particle diameter (D50) smaller than that of the first lithium transition metal oxide, wherein the first lithium transition metal oxide has higher particle strength and smaller crystalline size than the second lithium transition metal oxide, and a positive electrode and a lithium secondary battery which include the positive electrode active material. A positive electrode active material may improve high-temperature life characteristics and high-temperature storage characteristics of a lithium secondary battery. A positive electrode and a lithium secondary battery which include the positive electrode active material are also provided.
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7.发明公开公开(公告)号：US20230402597A1
公开(公告)日：2023-12-14
申请号：US18034991
申请日：2021-12-24
Applicant: LG Energy Solution, Ltd.
Inventor： Hyeong II Kim , Hak Yoon Kim , So Ra Baek , Hyuck Hur , Dong Hwi Kim , Seul Ki Chae , Wang Mo Jung , Dong Hun Lee
IPC: H01M4/525 , H01M10/052 , H01M4/505 , H01M4/36 , H01M4/62
CPC classification number: H01M4/525 , H01M10/052 , H01M2004/028 , H01M4/364 , H01M4/625 , H01M4/505
Abstract: A positive electrode for a lithium secondary battery includes a positive electrode active material layer including: a first positive electrode active material represented by Formula 1 and having a crystalline size of 150 nm or more; a conductive agent including single-walled carbon nanotubes (SWCNTs); and a binder. A lithium secondary battery includes the positive electrode.
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8.发明公开公开(公告)号：US20240072244A1
公开(公告)日：2024-02-29
申请号：US18270033
申请日：2022-02-24
Applicant: LG Energy Solution, Ltd.
Inventor： Dong Hun Lee , Hak Yoon Kim , So Ra Baek , Hyuck Hur , Dong Hwi Kim , Hyeong Il Kim , Seul Ki Chae , Wang Mo Jung
IPC: H01M4/36 , C01G53/00 , H01M4/505 , H01M4/525 , H01M10/052
CPC classification number: H01M4/366 , C01G53/50 , H01M4/505 , H01M4/525 , H01M10/052 , H01M2004/028
Abstract: A positive electrode active material for a lithium secondary battery comprising lithium transition metal oxide particles having a core-shell structure which includes a core portion and a shell portion disposed on a surface of the core portion. Wherein, the average crystallite size of the core portion is smaller than an average crystallite size of the shell portion and an amount of nickel among total transition metals included in the core portion and the shell portion is 80 atm % or more. A positive electrode active material, which suppresses decomposition of an electrolyte solution and occurrence of micro cracks of the positive electrode active material during charge and discharge by forming an average crystallite size of a core portion of the high-nickel positive electrode active material smaller than an average crystallite size of a shell portion, and a method of preparing the same.
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公开(公告)号：US20230155127A1
公开(公告)日：2023-05-18
申请号：US17922833
申请日：2022-01-28
Applicant: LG Energy Solution, Ltd.
Inventor： Dong Hwi Kim , Hak Yoon Kim , So Ra Baek , Hyuck Hur , Hyeong Il Kim , Seul Ki Chae , Wang Mo Jung , Dong Hun Lee
IPC: H01M4/525 , H01M10/052
CPC classification number: H01M4/525 , H01M10/052 , H01M2004/028
Abstract: A positive electrode and a lithium secondary including the same is disclosed herein. In some embodiments, the positive electrode includes a positive electrode current collector, a first positive electrode active material layer and a second positive electrode active material layer sequentially stacked on the positive electrode current collector, wherein the first positive electrode active material layer and the second positive electrode active material layer include a bimodal positive active material, the first positive electrode active material layer includes small-diameter particles in the form of single particles, and the second positive electrode active material layer includes small-diameter particles in the form of secondary particles. The positive electrode has improved capacity, efficiency, lifespan, output properties, and thermal stability.
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10.发明申请公开(公告)号：US20250158022A1
公开(公告)日：2025-05-15
申请号：US18838147
申请日：2023-02-15
Applicant: LG Energy Solution, Ltd.
Inventor： Kang Joon Park , So Ra Baek , Wang Mo Jung , Sin Young Park , Hyuck Hur , Dong Hwi Kim , Min Kwak , Seul Ki Chae
Abstract: A positive electrode material for a lithium secondary battery includes: a first positive electrode active material and a second positive electrode active material. The first positive electrode active material includes a lithium transition metal oxide in which a molar ratio of nickel among transition metals is 70 mol % or more, the second positive electrode active material includes a lithium transition metal oxide in which a molar ratio of nickel among transition metals is 25 mol % or more less than the molar ratio of the nickel among the transition metals of the first positive electrode active material, an average particle diameter of primary particles constituting the second positive electrode active material is larger than an average particle diameter of primary particles constituting the first positive electrode active material, and D50 of the second positive electrode active material is smaller than D50 of the first positive electrode active material.
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