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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：US20250079433A1
公开(公告)日：2025-03-06
申请号：US18726544
申请日：2023-01-11
Applicant: LG Energy Solution, Ltd.
Inventor： Jong Woo Kim , Gi Beom Han , Eun Sol Lho , Wang Mo Jung , Sang Min Park , Sang Wook Lee , Seul Ki Kim , Hyeong Il Kim
IPC: H01M4/04 , H01M4/02 , H01M4/525 , H01M10/052
Abstract: disclosure A positive electrode for a lithium secondary battery includes a positive electrode collector; and a positive electrode active material layer which is formed on at least one surface of the positive electrode collector and includes a positive electrode active material, wherein the positive electrode active material layer has a pore volume of 7.0×10−3·cm3/g to 8.0×10−3·cm3/g. A method for preparing the positive electrode is also provided.
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公开(公告)号：US20220416231A1
公开(公告)日：2022-12-29
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
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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公开(公告)号：US20220407077A1
公开(公告)日：2022-12-22
申请号：US17775694
申请日：2020-12-03
Applicant: LG Energy Solution, Ltd.
Inventor： Jung Min Han , Gi Beom Han , Sang Wook Lee , Hak Yoon Kim , So Ra Baek , Wang Mo Jung
Abstract: A method of preparing a positive electrode active material includes preparing a lithium transition metal oxide containing nickel in an amount of 60 mol % or more based on a total number of moles of metals excluding lithium, impregnating the lithium transition metal oxide with 300 ppm to 1,000 ppm of moisture based on 100 parts by weight of the lithium transition metal oxide, and performing a heat treatment on the lithium transition metal oxide impregnated with the moisture, wherein a lithium by-product present on a surface of the lithium transition metal oxide and the moisture react to form a passivation layer on the surface of the lithium transition metal oxide. A positive electrode active material prepared by the above-described preparation method, and a positive electrode and a lithium secondary battery which include the positive electrode active material are also provided.
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公开(公告)号：US20220149367A1
公开(公告)日：2022-05-12
申请号：US17431901
申请日：2020-09-22
Applicant: LG Energy Solution, Ltd.
Inventor： Jungmin Han , Gi Beom Han , Sang Wook Lee , Hakyoon Kim , Sora Baek , Wang Mo Jung
IPC: H01M4/525 , H01M4/505 , H01M10/0525
Abstract: The present disclosure provides a positive electrode active material for a secondary battery, comprising: a lithium nickel-based oxide doped with a doping element (M′), wherein the doping element (M′) is at least one selected from the group consisting of titanium (Ti) and magnesium (Mg), wherein when the doping element (M′) is Ti, the doping content of Ti is 3000 ppm to 5000 ppm based on the total amount of the lithium nickel-based oxide excluding the doping element, wherein when the doping element (M′) is Mg, the doping content of Mg is 500 ppm to 5000 ppm based on the total amount of the lithium nickel-based oxide excluding the doping element, and wherein when the doping element (M′) is Ti and Mg, the total doping content of Ti and Mg is 3500 ppm to 5000 ppm based on the total amount of the lithium nickel oxide excluding the doping elements.
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Patent Agency Ranking
公开(公告)号：US12278376B2
公开(公告)日：2025-04-15
申请号：US17775694
申请日：2020-12-03
Applicant: LG Energy Solution, Ltd.
Inventor： Jung Min Han , Gi Beom Han , Sang Wook Lee , Hak Yoon Kim , So Ra Baek , Wang Mo Jung
Abstract: A method of preparing a positive electrode active material includes preparing a lithium transition metal oxide containing nickel in an amount of 60 mol % or more based on a total number of moles of metals excluding lithium, impregnating the lithium transition metal oxide with 300 ppm to 1,000 ppm of moisture based on 100 parts by weight of the lithium transition metal oxide, and performing a heat treatment on the lithium transition metal oxide impregnated with the moisture, wherein a lithium by-product present on a surface of the lithium transition metal oxide and the moisture react to form a passivation layer on the surface of the lithium transition metal oxide. A positive electrode active material prepared by the above-described preparation method, and a positive electrode and a lithium secondary battery which include the positive electrode active material are also provided.
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公开(公告)号：US20240313210A1
公开(公告)日：2024-09-19
申请号：US18677050
申请日：2024-05-29
Applicant: LG Energy Solution, Ltd.
Inventor： Gi Beom Han , Sang Min Park , Ji Hye Kim , Tae Gu Yoo , Wang Mo Jung
CPC classification number: H01M4/505 , H01M4/0471 , H01M4/366 , H01M4/525 , H01M10/0525 , H01M2004/028
Abstract: A positive electrode active material for a secondary battery is provided, which includes a lithium composite transition metal oxide including nickel (Ni), cobalt (Co), and manganese (Mn), wherein a particle of the lithium composite transition metal oxide includes a core portion and a resistance portion formed on a surface of the core portion, and is composed of a single particle, wherein the core portion has a layered crystal structure of space group R-3m, and the resistance portion has a cubic rock-salt structure of space group Fm-3m.
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18.发明公开公开(公告)号：US20240266525A1
公开(公告)日：2024-08-08
申请号：US18591579
申请日：2024-02-29
Applicant: LG Energy Solution, Ltd.
Inventor： Sang Wook Lee , Gi Beom Han , Hakyoon Kim , Sora Baek , Jungmin Han , Wang Mo Jung
CPC classification number: H01M4/505 , H01M4/525 , H01M2004/021 , H01M2004/028
Abstract: A positive electrode and a secondary battery including the same is disclosed herein. In some embodiments, a positive electrode includes a positive electrode current collector and a positive electrode mixture containing a positive electrode active material disposed thereon, the positive electrode active material includes a lithium transition metal oxide powder represented by chemical formula 1,
M is at least one selected from the group consisting of Mn, Ti, Mg, Al, Zr, Mn and Ni, A is an oxygen-substituted halogen, and 1.00≤a≤1.05, 0.1≤x≤0.8, 0.1≤y≤0.8, 0.01≤z≤0.4, and 0≤w≤0.001,
the powder having large particles which are secondary particles having an average particle diameter (D50) of 7 μm to 17 μm, and small particles which are single particles having average particle diameter (D50) of 2 μm to 7 μm, weight ratio of large particles to small particles is 5:5 to 9:1, and the positive electrode mixture has a porosity of 22% to 35%.-
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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20.发明公开公开(公告)号：US20230155123A1
公开(公告)日：2023-05-18
申请号：US17780642
申请日：2020-10-20
Applicant: LG Energy Solution, Ltd.
Inventor： Sang Wook Lee , Gi Beom Han , Hakyoon Kim , Sora Baek , Jungmin Han , Wang Mo Jung
CPC classification number: H01M4/505 , H01M4/525 , H01M2004/028
Abstract: A positive electrode and a secondary battery including the same is disclosed herein. In some embodiments, a positive electrode includes a positive electrode current collector and a positive electrode mixture containing a positive electrode active material disposed thereon, the positive electrode active material includes a lithium transition metal oxide powder represented by chemical formula 1,
LiaNixCoyMzO2-wAw (1)
M is at least one selected from the group consisting of Mn, Ti, Mg, Al, Zr, Mn and Ni, A is an oxygen-substituted halogen, and 1.00≤a≤1.05, 0.1≤x≤0.8, 0.1≤y≤0.8, 0.01≤z≤0.4, and 0≤w≤0.001,
the powder having large particles which are secondary particles having an average particle diameter (D50) of 7 μm to 17 μm, and small particles which are single particles having average particle diameter (D50) of 2 μm to 7 μm, weight ratio of large particles to small particles is 5:5 to 9:1, and the positive electrode mixture has a porosity of 22% to 35%.
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