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公开(公告)号：US20230352654A1
公开(公告)日：2023-11-02
申请号：US17922839
申请日：2021-12-23
Applicant: LG Energy Solution, Ltd.
Inventor： Dae Jin Lee , Sang Min Park , Min Kwak , Wang Mo Jung , Gi Beom Han , Sang Wook Lee , Eun Sol Lho , Joong Yeop Do , Kang Joon Park
CPC classification number: H01M4/364 , H01M4/525 , H01M4/505 , H01M4/485 , H01M4/0471 , H01M4/626 , H01M2004/028
Abstract: A method of preparing a positive electrode active material is disclosed herein. The method may ensure surface and coating uniformity of first and second lithium transition metal oxides in the positive electrode active material. In some embodiments, the method includes washing a mixture of a first lithium transition metal oxide having a first Brunauer-Emmett-Teller (BET) specific surface area and a second lithium transition metal oxide having a second BET specific surface area with a washing solution, an amount of the washing solution based on 100 parts by weight of the mixture satisfies Equation 1: 5,000×(x1w1+x2w2)≤the amount of the washing solution ≤15,000×(x1w1+x2w2), x1 and x2 are the first and second BET specific surface areas, respectively, and w1 and w2 are weight ratios of the first and second lithium transition metal oxides based on a total weight of the mixture, respectively.
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公开(公告)号：US20230002899A1
公开(公告)日：2023-01-05
申请号：US17781925
申请日：2021-01-12
Applicant: LG Energy Solution, Ltd.
Inventor： Seul Ki Chae , Dae Jin Lee , Dong Hwi Kim , Jin Tae Hwang , Hyeong Il Kim , Wang Mo Jung , Dong Hun Lee
IPC: C23C16/455 , H01M4/36 , H01M4/505 , H01M4/525 , H01M4/04
Abstract: A method of preparing a positive electrode active material for a secondary battery includes preparing a lithium composite transition metal oxide which includes nickel, cobalt, and manganese and contains 60 mol % or more of the nickel among all metals except lithium, adding a moisture absorbent and the lithium composite transition metal oxide into an atomic layer deposition (ALD) reactor, and adding a coating metal precursor into the atomic layer deposition (ALD) reactor and forming a metal oxide coating layer on surfaces of particles of the lithium composite transition metal oxide by atomic layer deposition (ALD).
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公开(公告)号：US11993846B2
公开(公告)日：2024-05-28
申请号：US17781925
申请日：2021-01-12
Applicant: LG Energy Solution, Ltd.
Inventor： Seul Ki Chae , Dae Jin Lee , Dong Hwi Kim , Jin Tae Hwang , Hyeong Il Kim , Wang Mo Jung , Dong Hun Lee
CPC classification number: C23C16/45555 , H01M4/0428 , H01M4/366 , H01M4/505 , H01M4/525 , H01M2004/028
Abstract: A method of preparing a positive electrode active material for a secondary battery includes preparing a lithium composite transition metal oxide which includes nickel, cobalt, and manganese and contains 60 mol % or more of the nickel among all metals except lithium, adding a moisture absorbent and the lithium composite transition metal oxide into an atomic layer deposition (ALD) reactor, and adding a coating metal precursor into the atomic layer deposition (ALD) reactor and forming a metal oxide coating layer on surfaces of particles of the lithium composite transition metal oxide by atomic layer deposition (ALD).
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公开(公告)号：US20220158192A1
公开(公告)日：2022-05-19
申请号：US17435820
申请日：2020-03-09
Applicant: LG Energy Solution, Ltd.
Inventor： Tae Gon Kim , Ki Won Sung , Wang Mo Jung , Sin Young Park , Dae Jin Lee , Bo Ram Lee , Hak Yoon Kim
Abstract: A negative electrode includes a negative electrode active material layer, wherein the negative electrode active material layer includes a negative electrode active material and a conductive material. The negative electrode active material includes SiOx (0≤x
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Patent Agency Ranking
公开(公告)号：US20220140340A1
公开(公告)日：2022-05-05
申请号：US17433863
申请日：2020-03-06
Applicant: LG Energy Solution, Ltd.
Inventor： Tae Gon Kim , Wang Mo Jung , Kwang Woo Yoon , Seung Yong Son , Byung Joon Chae , Sin Young Park , Se Hui Sohn , Dae Jin Lee , Bo Ram Lee , Hak Yoon Kim , Seul Ki Kim , Jin Young Hwang
IPC: H01M4/583 , C01B32/162
Abstract: The present invention relates to a carbon nanotube having an La(100) of less than 7.0 nm when measured by XRD and a specific surface area of 100 m2/g to 196 m2/g, and an electrode and a secondary battery including the carbon nanotube.
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公开(公告)号：US12249718B2
公开(公告)日：2025-03-11
申请号：US17435820
申请日：2020-03-09
Applicant: LG Energy Solution, Ltd.
Inventor： Tae Gon Kim , Ki Won Sung , Wang Mo Jung , Sin Young Park , Dae Jin Lee , Bo Ram Lee , Hak Yoon Kim
Abstract: A negative electrode includes a negative electrode active material layer, wherein the negative electrode active material layer includes a negative electrode active material and a conductive material. The negative electrode active material includes SiOx (0≤x
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公开(公告)号：US20240258502A1
公开(公告)日：2024-08-01
申请号：US18016064
申请日：2022-06-28
Applicant: LG Energy Solution, Ltd.
Inventor： Dae Jin Lee , Ji Young Kim , Hoe Jin Hah , Lak Young Choi
IPC: H01M4/36 , H01M4/02 , H01M4/525 , H01M4/58 , H01M10/0525 , H01M10/0562
CPC classification number: H01M4/366 , H01M4/525 , H01M4/5815 , H01M10/0525 , H01M10/0562 , H01M2004/021 , H01M2004/028
Abstract: A positive electrode active material and an all-solid-state battery comprising the same are provided. The positive electrode active material comprises a shell containing metal sulfide particles having a specific range of particle size adsorbed on a surface of a core containing a lithium metal oxide, and reduces cracks generated between the positive electrode active material and a solid electrolyte and reactivity therebetween and thereby providing improved mobility of lithium ions and high charge-discharge capacity.
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8.发明公开公开(公告)号：US20230420669A1
公开(公告)日：2023-12-28
申请号：US18038923
申请日：2021-11-30
Applicant: LG Energy Solution, Ltd.
Inventor： Sang Wook Lee , Dae Jin Lee , Sang Min Park , Min Kwak , Wang Mo Jung , Gi Beom Han , Eun Sol Lho , Joong Yeop Do , Kang Joon Park
IPC: H01M4/525 , H01M4/505 , H01M10/052
CPC classification number: H01M4/525 , H01M4/505 , H01M10/052 , H01M2004/028
Abstract: The present invention relates to a positive electrode active material having low nickel disorder and high particle strength in a crystal structure, and capable of implementing a battery having excellent capacity properties and capacity retention, and a positive electrode and a lithium secondary battery including the same, wherein the positive electrode active material includes a large-diameter lithium transition metal oxide and a small-diameter lithium transition metal oxide whose average particle diameter (D50) is smaller than that of the large-diameter lithium transition metal oxide, wherein the large-diameter lithium transition metal oxide and the small-diameter lithium transition metal oxide each independently have a composition represented by Formula 1, and has a crystal grain size of 100 nm to 150 nm, wherein the difference in crystal grain size between the large-diameter lithium transition metal oxide and the small-diameter lithium transition metal oxide is less than 40 nm, and the positive electrode active material has a nickel disorder (Ni-disorder) of 1.5% or less.
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公开(公告)号：US20240304792A1
公开(公告)日：2024-09-12
申请号：US18028494
申请日：2022-08-30
Applicant: LG Energy Solution, Ltd.
Inventor： Dae Jin Lee , Ji Young Kim , Lak Young Choi , Hoe Jin Hah
IPC: H01M4/36 , C01G53/00 , H01M4/525 , H01M10/052 , H01M10/0562
CPC classification number: H01M4/366 , C01G53/50 , H01M4/525 , H01M10/052 , H01M10/0562 , C01P2002/50 , C01P2004/84 , C01P2006/40 , H01M2300/0068
Abstract: A positive electrode active material for an all-solid-state battery, a method of preparing the same, and an all-solid-state battery including the same are provided. The positive electrode active material includes a core containing a lithium metal oxide represented by Lix[NiyCozMnwM1v]Ou, which contains a high nickel content and a low cobalt content, and a shell containing niobium and tungsten and adsorbed on a surface of the core, and thereby providing advantageous effect of engancing discharge performance of a battery by enhancing lithium ion mobility and reducing a side reaction between the positive electrode active material and a solid electrolyte.
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