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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：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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3.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%.-
4.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%.-
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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