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41.发明公开公开(公告)号：US20240234719A1
公开(公告)日：2024-07-11
申请号：US18609708
申请日：2024-03-19
Applicant: LG Energy Solution, Ltd.
Inventor： Tae Gu Yoo , Younguk Park , Jintae Hwang , Wang Mo Jung , Sungbin Park
IPC: H01M4/525 , C01G53/00 , H01M4/02 , H01M4/505 , H01M10/0525
CPC classification number: H01M4/525 , C01G53/50 , H01M4/505 , H01M10/0525 , C01P2002/52 , C01P2002/60 , C01P2004/03 , C01P2004/04 , C01P2004/61 , C01P2006/40 , H01M2004/028
Abstract: A positive electrode active material in the form of a single particle and a lithium secondary battery containing the positive electrode active material thereof are provided. The positive electrode active material has a nickel-based lithium composite metal oxide single particle. The single particle includes a metal doped in the crystal lattice thereof. The single particle includes, in the crystal lattice, a surface part having a rock salt structure, a spinel structure, or a mixed structure thereof from a surface of the single particle to a depth of 0.13% to 5.26% of a radius of the single particle, and a central part having a layered structure from an interface with the surface part thereof to the center part of the single particle.
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42.发明公开公开(公告)号：US20240162437A1
公开(公告)日：2024-05-16
申请号：US18420436
申请日：2024-01-23
Applicant: LG Energy Solution, Ltd.
Inventor： So Ra Baek , Eun Sol Lho , Wang Mo Jung , Sang Wook Lee , Eun Jo
IPC: H01M4/525 , C01G53/00 , H01M4/505 , H01M10/0525
CPC classification number: H01M4/525 , C01G53/50 , H01M4/505 , H01M10/0525 , C01P2002/70 , C01P2004/51 , H01M2004/021
Abstract: 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.-
43.发明授权公开(公告)号：US11967714B2
公开(公告)日：2024-04-23
申请号：US18214800
申请日：2023-06-27
Applicant: LG Energy Solution, Ltd.
Inventor： Tae Gu Yoo , Younguk Park , Jintae Hwang , Wang Mo Jung , Sungbin Park
CPC classification number: H01M4/525 , C01G53/50 , H01M4/505 , H01M10/0525 , C01P2002/52 , C01P2002/60 , C01P2004/03 , C01P2004/04 , C01P2004/61 , C01P2006/40 , H01M2004/028
Abstract: A positive electrode active material in the form of a single particle and a lithium secondary battery containing the positive electrode active material thereof are provided. The positive electrode active material has a nickel-based lithium composite metal oxide single particle. The single particle has a plurality of crystal grains. An average particle size (D50) of the single particle is from 3.5 μm to 8 μm. The single particle includes a metal doped in the crystal lattice thereof.
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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：US11876210B2
公开(公告)日：2024-01-16
申请号：US18195089
申请日：2023-05-09
Applicant: LG Energy Solution, Ltd.
Inventor： Tae Gu Yoo , Young Uk Park , Jin Tae Hwang , Wang Mo Jung , Sung Bin Park
IPC: H01M4/131 , H01M4/04 , H01M4/134 , H01M4/1391 , H01M4/1395 , H01M4/36 , H01M4/525 , H01M10/0525 , H01M4/02
CPC classification number: H01M4/131 , H01M4/0471 , H01M4/134 , H01M4/1391 , H01M4/1395 , H01M4/364 , H01M4/366 , H01M4/525 , H01M10/0525 , H01M2004/028
Abstract: A positive electrode active material includes a lithium transition metal oxide, which is doped with doping element M2, wherein M2 includes at least one of Al, Ti, Mg, Zr, W, Y, Sr, Co, F, Si, Na, Cu, Fe, Ca, S, or B, and contains nickel in an amount of 60 mol % or more based on a total number of moles of transition metals excluding lithium, wherein the lithium transition metal oxide has a single particle form, and includes a center portion having a layered structure and a surface portion having a rock-salt structure, and the doping element M2 is included in an amount of 3,580 ppm to 7,620 ppm based on a total weight of the positive electrode active material.
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Patent Agency Ranking
公开(公告)号：US20230246173A1
公开(公告)日：2023-08-03
申请号：US17775742
申请日：2021-04-19
Applicant: LG Energy Solution, Ltd.
Inventor： Tae Gon Kim , Yong Ju Lee , Il Geun Oh , Min Kwak , Je Young Kim , Wang Mo Jung
CPC classification number: H01M4/366 , H01M4/386 , H01M4/587 , H01M4/623 , H01M2004/027
Abstract: The present invention relates to a silicon-carbon composite negative electrode active material, a negative electrode including the same, and a secondary battery, wherein the silicon-carbon composite negative electrode active material includes a core containing SiOx (0≤X
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公开(公告)号：US20220246925A1
公开(公告)日：2022-08-04
申请号：US17627243
申请日：2020-08-05
Applicant: LG Energy Solution, Ltd.
Inventor： Eun Sol Lho , Sang Min Park , Wang Mo Jung , Sung Bin Park , Seul Ki Kim , Wen Xiu Wang
Abstract: A method of preparing a positive electrode active material for a secondary battery, is disclosed herein. In some embodiments, a method includes mixing a positive electrode active material precursor, a lithium source material, a first firing additive, a second firing additive, and a third firing additive a to form a mixture, wherein the positive electrode active material precursor contains nickel, cobalt, and manganese and has a nickel content of 60 mol % or more relative to a total molar amount of metals in the positive electrode active material precursor, and performing primary firing of the mixture to form a lithium transition metal oxide, wherein the first firing additive is a lithium-containing compound, the second firing additive is a carbonate ion-containing compound, and the third firing additive is a boron-containing compound.
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48.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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公开(公告)号：US20250149571A1
公开(公告)日：2025-05-08
申请号：US18836917
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 , Seul Ki Chae , Kang Joon Park , Wang Mo Jung
Abstract: The present invention relates to positive electrode active material powder including overlithiated manganese-based oxide particles, which are represented by the disclosed 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 or less nodules, and a positive electrode and a lithium secondary battery which include the positive electrode active material powder.
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公开(公告)号：US20250118743A1
公开(公告)日：2025-04-10
申请号：US18294616
申请日：2022-10-05
Applicant: LG Energy Solution, Ltd.
Inventor： Byung Chun Park , Wang Mo Jung , Sin Young Park , Hyuck Hur , Dong Hwi Kim
Abstract: The present invention relates to a lithium secondary battery which includes a positive electrode including an overlithiated manganese-based oxide, in which an amount of manganese among total metals excluding lithium is greater than 50 mol % and a ratio (Li/Me) of the number of moles of the lithium to the number of moles of the total metals excluding the lithium is greater than 1, as a positive electrode active material; a negative electrode including a silicon-based negative electrode active material; a separator disposed between the positive electrode and the negative electrode; and an electrolyte, and satisfies Equation (1). 0.25 A ≤ B ≤ 0 . 6 A Equation ( 1 ) In Equation (1), A is a discharge curve area in a voltage range of 2.0 V to 4.6 V of a dQ/dV graph obtained by differentiating a graph of battery discharge capacity Q and voltage V after one cycle which are measured while charging the lithium secondary battery at 0.1 C to 4.6 V and then discharging the lithium secondary battery at 0.1 C to 2.0 V, and B is a discharge curve area in a voltage range of 2.0 V to 3.5 V of the dQ/dV graph.
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