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公开(公告)号：US20240270603A1
公开(公告)日：2024-08-15
申请号：US18573109
申请日：2022-11-02
Applicant: LG Energy Solution, Ltd.
Inventor： Eun Sol Lho , Gi Beom Han , Jong Woo Kim , Wang Mo Jung , Sang Min Park , Sang Wook Lee , Seul Ki Kim , Hyeong ll Kim
IPC: C01G53/00 , H01M4/02 , H01M4/525 , H01M10/052
CPC classification number: C01G53/50 , H01M4/525 , H01M10/052 , H01M10/4235 , C01P2006/40 , H01M2004/028
Abstract: The present invention relates to a method of preparing a positive electrode active material for a lithium secondary battery and a positive electrode active material prepared thereby, wherein the preparation method includes a first step of preparing a lithium transition metal oxide by mixing a lithium raw material and a transition metal precursor containing 70 mol % or more of nickel based on the total number of moles of transition metals and sintering the mixture; and a second step of washing the lithium transition metal oxide with hot water of more than 90° C., wherein, after the second step, a result of EELS analysis of a particle surface of the lithium transition metal oxide satisfies Equation 1.
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公开(公告)号：US20240234720A1
公开(公告)日：2024-07-11
申请号：US18615093
申请日：2024-03-25
Applicant: LG Energy Solution, Ltd.
Inventor： Sang Min Park , Ji Hye Kim , Tae Gu Yoo , Wang Mo Jung , Gi Beom Han
CPC classification number: H01M4/525 , C01G53/50 , H01M4/0471 , H01M4/505 , H01M10/0525 , H01M2004/021 , H01M2004/028
Abstract: A lithium composite transition metal oxide includes nickel (Ni), cobalt (Co), and manganese (Mn), wherein the lithium composite transition metal oxide includes two or more elements selected from the group consisting of Zr, Al, V, Co, and Mg and additional two or more elements selected from the group consisting of Ti, Y, Sr, Nb, Ba, and Ca, and the lithium composite transition metal oxide is in a form of a particle having a crystallite size of 170-300 nm.
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公开(公告)号：US20250087670A1
公开(公告)日：2025-03-13
申请号：US18821222
申请日：2024-08-30
Applicant: LG Energy Solution, Ltd.
Inventor： Youshin Lee , Kang Joon Park , Jaeyoung Lee , Minjeong Kim , Sin Young Park , Gi Beom Han
Abstract: The positive electrode active material includes: a first phase containing a lithium manganese oxide with a rock salt structure; and a second phase containing a lithium metal oxide with a layered structure, in a mixed state. In the positive electrode active material, the content of manganese may account for about 50 mol % or more of the total content of metals contained in the positive electrode active material, excluding lithium, and niobium (Nb) which is additionally doped on the positive electrode active material may be further included in an amount of about 2,000 ppm to 9,500 ppm based on the total content of the positive electrode active material.
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4.发明申请公开(公告)号：US20250054942A1
公开(公告)日：2025-02-13
申请号：US18723063
申请日：2022-12-22
Applicant: LG Energy Solution, Ltd.
Inventor： Eun Sol Lho , Gi Beom Han , Jong Woo Kim , Wang Mo Jung , Sang Min Park , Sang Wook Lee , Seul Ki Kim , Hyeong II Kim
Abstract: A positive electrode for a lithium secondary battery includes a collector; and a positive electrode active material layer disposed on at least one surface of the collector, wherein the ratio of a peak intensity of a (003) plane to a peak intensity of a (101) plane of the positive electrode measured by X-ray diffraction analysis is 8 or more.
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公开(公告)号：US12021228B2
公开(公告)日：2024-06-25
申请号：US17780128
申请日：2020-12-04
Applicant: LG Energy Solution, Ltd.
Inventor： Gi Beom Han , Wang Mo Jung , Sang Wook Lee , Hak Yoon Kim , So Ra Baek , Jung Min Han
CPC classification number: H01M4/366 , C01G53/50 , H01M4/0471 , H01M4/505 , H01M4/525 , C01P2002/50 , C01P2004/50 , C01P2004/84 , C01P2006/40 , H01M2004/028
Abstract: A method of producing a positive electrode material for a secondary battery includes preparing a lithium composite transition metal oxide containing nickel, cobalt, and manganese, forming a coating layer on a surface of the lithium composite transition metal oxide, and post-treating the lithium composite transition metal oxide having the coating layer formed thereon, wherein the post-treating is performed by exposing the lithium composite transition metal oxide having the coating layer formed thereon to moisture at a relative humidity of 10% to 50% at 25° C., and then heat treating the lithium composite transition metal oxide to remove residual moisture.
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Patent Agency Ranking
公开(公告)号：US20220223861A1
公开(公告)日：2022-07-14
申请号：US17606929
申请日：2020-12-23
Applicant: LG Energy Solution, Ltd.
Inventor： Hakyoon Kim , Gi Beom Han , Sang Wook Lee , Sora Baek , Jungmin Han , Wang Mo Jung
Abstract: A positive electrode for a secondary battery in which a positive electrode mixture including a positive electrode active material is formed on at least one surface of a current collector is provided. The positive electrode includes a lithium by-product so as to satisfy the following Equation 1 based on the total weight of the positive electrode mixture. 4000 A - 2000 ≤ B ( ppm ) [ Equation 1 ] wherein in the Equation 1, A is the molar content of Ni when the total mole of transition metal contained in the positive electrode active material is 1, and B is the content of lithium by-product, when A is 0.5 or less, the minimum value of B is 6000 ppm. The positive electrode also has a harness at which cracks occur in a measuring rod of 2 pi (Ø) or more.
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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：US20240387798A1
公开(公告)日：2024-11-21
申请号：US18787568
申请日：2024-07-29
Applicant: LG Energy Solution, Ltd.
Inventor： Dong Hwi Kim , Dong Hun Lee , Wang Mo Jung , Sung Bin Park , Gi Beom Han
IPC: H01M4/36 , H01M4/02 , H01M4/505 , H01M4/525 , H01M10/0525
Abstract: A positive electrode material for a lithium secondary battery includes a first positive electrode active material and a second positive electrode active material, both of which are lithium composite transition metal oxides containing transition metals. The first positive electrode active material has a larger average particle size (D50) than the second positive electrode active material, wherein a ratio (Li/Me)1 of the mole number of lithium with respect to the total mole number of transition metals of the first positive electrode active material is more than 1 to 1.5 or less, and a ratio (Li/Me)2 of the mole number of lithium (Li) with respect to the total mole number of transition metals of the second positive electrode active material is 0.9 to 1. The second positive electrode active material has a crystallite size of 180 nm or more.
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9.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：US20230039594A1
公开(公告)日：2023-02-09
申请号：US17791494
申请日：2021-04-22
Applicant: LG Energy Solution, LTD.
Inventor： Jung Pil Lee , Gi Beom Han , Dong Chan Lee
IPC: H01M4/66 , H01M10/052 , H01M4/04
Abstract: A negative electrode for lithium secondary batteries and a method of manufacturing the same are provided. The negative electrode includes a negative electrode current collector and a lithiophilic material formed on at least one surface of the negative electrode current collector, wherein the lithiophilic material is an oxidized product of a coating material coated on the negative electrode current collector and includes at least one of a metal or a metal oxide, and an oxide layer is formed on a surface of the negative electrode current collector having the lithiophilic material formed thereon.
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