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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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公开(公告)号：US20250054952A1
公开(公告)日：2025-02-13
申请号：US18723067
申请日：2023-09-05
Applicant: LG Energy Solution, Ltd.
Inventor： Shulkee Kim , Misnoo Kim , Sora Baek , Sang Seung Oh , Kwang Ho Yoo
Abstract: A secondary battery includes a positive electrode, a negative electrode, a separator, and an electrolyte The negative electrode includes a negative electrode active material that has a Si-based active material and a carbon-based active material. The positive electrode includes a Ni-based active material that has a cobalt oxide layer provided on a portion of a surface of a particle.
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公开(公告)号：US20240113284A1
公开(公告)日：2024-04-04
申请号：US18374302
申请日：2023-09-28
Applicant: LG Energy Solution, Ltd.
Inventor： Lilin Piao , Gyeongseop Lee , Minsoo Kim , Shulkee Kim , Kyutae Park , Sora Baek , Kwang Ho Yoo , Wonhee Jung
CPC classification number: H01M4/366 , H01M4/0404 , H01M4/133 , H01M4/1393 , H01M4/483 , H01M4/525 , H01M4/587 , H01M2004/027
Abstract: A negative electrode for a secondary battery, including: a current collector; a first negative electrode active material layer provided on the current collector; and a second negative electrode active material layer provided on the first negative electrode active material layer, in which the first and second negative electrode active material layers include a silicon-based active material and natural graphite, the natural graphite has an average particle diameter (D50) of 10 μm or less, and the OI (004/110) of the first and second negative electrode active material layers is 8 or less, and a secondary battery including the same.
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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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5.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%.-
Patent Agency Ranking
公开(公告)号：US20240113283A1
公开(公告)日：2024-04-04
申请号：US18373614
申请日：2023-09-27
Applicant: LG Energy Solution, Ltd.
Inventor： Shulkee Kim , Gyeongseop Lee , Minsoo Kim , Kyutae Park , Lilin Piao , Sora Baek , Kwang Ho Yoo , Wonhee Jung
IPC: H01M4/36 , H01M4/38 , H01M4/40 , H01M4/583 , H01M10/052
CPC classification number: H01M4/366 , H01M4/364 , H01M4/386 , H01M4/405 , H01M4/583 , H01M10/052 , H01M2004/027
Abstract: A negative electrode for a secondary battery, including: a current collector; a first negative electrode active material layer provided on the current collector; and a second negative electrode active material layer provided on the first negative electrode active material layer, in which at least one of the first and second negative electrode active material layers includes a lithium-substituted carboxymethyl cellulose, and the second negative electrode active material layers includes a silicon-based active material, and a secondary battery including the same.
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7.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：US20240128491A1
公开(公告)日：2024-04-18
申请号：US18377088
申请日：2023-10-05
Applicant: LG Energy Solution, Ltd.
Inventor： Kyutae Park , Wonhee Jung , Minsoo Kim , Shulkee Kim , Lilin Piao , Sora Baek , Kwang Ho Yoo , Gyeongseop Lee
IPC: H01M10/052 , G01R31/385 , H01M4/36 , H01M4/48 , H01M4/505 , H01M4/525 , H01M4/583
CPC classification number: H01M10/052 , G01R31/3865 , H01M4/364 , H01M4/483 , H01M4/505 , H01M4/525 , H01M4/583 , H01M2004/028
Abstract: A lithium secondary battery, and a method of making the same, including a positive electrode, a separator and a negative electrode, in which the positive electrode includes a lithium composite transition metal compound including nickel (Ni) and cobalt (Co), the negative electrode includes a silicon-based active material and a carbon-based active material, the efficiency constants of the silicon-based active material and the carbon-based active material and the efficiency constant of the lithium composite transition metal compound satisfy an efficiency balance defined by Equation 1.
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公开(公告)号：US20240113285A1
公开(公告)日：2024-04-04
申请号：US18374367
申请日：2023-09-28
Applicant: LG Energy Solution, Ltd.
Inventor： Sora Baek , Minsoo Kim , Shulkee Kim , Kyutae Park , Lilin Piao , Kwang Ho Yoo , Gyeongseop Lee , Wonhee Jung
CPC classification number: H01M4/366 , C01G53/50 , H01M4/505 , H01M4/525 , H01M2004/028
Abstract: A positive electrode material comprising: a first positive electrode active material in the form of single particles; and a second positive electrode active material in the form of single particles which has a lager particle diameter than that of the first positive electrode active material, wherein at least one of the first or second positive electrode active materials has a coating layer comprising boron (B) and cobalt (Co) provided on at least a portion of a surface of the single particle, and a positive electrode and a secondary battery including the same.
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公开(公告)号：US20250105338A1
公开(公告)日：2025-03-27
申请号：US18832240
申请日：2023-10-11
Applicant: LG Energy Solution, Ltd.
Inventor： Kyutae Park , Wonhee Jung , Minsoo Kim , Shulkee Kim , Lilin Piao , Sora Baek , Kwang Ho Yoo , Gyeongseop Lee
IPC: H01M10/052 , H01M4/36 , H01M4/48 , H01M4/525 , H01M4/587 , H01M10/0567
Abstract: A lithium secondary battery includes a positive electrode, a separator, a negative electrode, and an electrolyte, in which the positive electrode includes a lithium composite transition metal compound including nickel (Ni) and cobalt (Co), the negative electrode includes a mixed negative electrode active material of a silicon-based active material and a carbon-based active material, the electrolyte includes fluoroethylene carbonate, and the efficiency constants of the mixed negative electrode active material and the lithium composite transition metal compound and the part by weight of the fluoroethylene carbonate satisfy a specific Equation.
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