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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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公开(公告)号：US12080879B1
公开(公告)日：2024-09-03
申请号：US18697933
申请日：2022-10-05
Applicant: LG Energy Solution, Ltd.
Inventor： Seung Won Park , Yo Han Kwon , Je Young Kim , Seok Koo Kim , Wang Mo Jung , Chul Haeng Lee , Byung Chun Park
CPC classification number: H01M4/364 , H01M4/133 , H01M4/366 , H01M4/483 , H01M4/505 , H01M4/587 , H01M4/625 , H01M10/0525 , H01M2004/021 , H01M2004/027 , H01M2004/028
Abstract: A lithium secondary battery including: a negative electrode; a positive electrode; a separator disposed between the negative electrode and the positive electrode; and an electrolyte, wherein the negative electrode includes SiOx (where 0
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73.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%.-
74.发明公开公开(公告)号：US20240079554A1
公开(公告)日：2024-03-07
申请号：US18381475
申请日：2023-10-18
Applicant: LG Energy Solution, Ltd.
Inventor： Seul Ki Kim , Tae Gon Kim , Je Young Kim , Wang Mo Jung , Jung Woo Yoo , Sang Wook Lee
IPC: H01M4/133 , H01M4/1393 , H01M4/36 , H01M4/62 , H01M4/88 , H01M10/0525
CPC classification number: H01M4/133 , H01M4/1393 , H01M4/364 , H01M4/623 , H01M4/8828 , H01M10/0525 , H01M2004/021
Abstract: An electrode includes an electrode active material, wherein the electrode active material layer includes an electrode active material, polyvinylidene fluoride, and a conductive agent, wherein the conductive agent includes a carbon nanotube structure in which 2 to 5,000 single-walled carbon nanotube units are bonded to each other, and the carbon nanotube structure is included in an amount of 0.01 wt % to 0.5 wt % in the electrode active material layer. A secondary battery including the same, and a method of preparing the electrode are also provided.
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75.发明公开公开(公告)号：US20240072244A1
公开(公告)日：2024-02-29
申请号：US18270033
申请日：2022-02-24
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 , C01G53/00 , H01M4/505 , H01M4/525 , H01M10/052
CPC classification number: H01M4/366 , C01G53/50 , H01M4/505 , H01M4/525 , H01M10/052 , H01M2004/028
Abstract: A positive electrode active material for a lithium secondary battery comprising lithium transition metal oxide particles having a core-shell structure which includes a core portion and a shell portion disposed on a surface of the core portion. Wherein, the average crystallite size of the core portion is smaller than an average crystallite size of the shell portion and an amount of nickel among total transition metals included in the core portion and the shell portion is 80 atm % or more. A positive electrode active material, which suppresses decomposition of an electrolyte solution and occurrence of micro cracks of the positive electrode active material during charge and discharge by forming an average crystallite size of a core portion of the high-nickel positive electrode active material smaller than an average crystallite size of a shell portion, and a method of preparing the same.
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Patent Agency Ranking
76.发明授权公开(公告)号：US11909045B2
公开(公告)日：2024-02-20
申请号：US18100778
申请日：2023-01-24
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: Exemplary embodiments of positive electrode active materials in the form of single particles, and a method of preparing each of them, are provided. The single particles of the exemplary embodiments include single particles of a nickel-based lithium composite metal oxide, having a plurality of crystal grains, each having a size of 180 nm to 300 nm, as analyzed by a Cu Kα X-ray (X-rα). The single particles include a metal doped in the crystal lattice thereof. One embodiment includes a surface coating. The total content of the metal doped in the crystal lattice thereof and the metal of the metal oxide coated on the surface thereof is controlled in the range of 2500 ppm to 6000 ppm.
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公开(公告)号：US20240047731A1
公开(公告)日：2024-02-08
申请号：US18276557
申请日：2022-07-21
Applicant: LG Energy Solution, Ltd.
Inventor： Byung Chun Park , Yo Han Kwon , Je Young Kim , Seok Koo Kim , Wang Mo Jung , Yong Ju Lee , Chul Haeng Lee
IPC: H01M10/0525 , H01M4/134 , H01M4/131 , H01M4/62
CPC classification number: H01M10/0525 , H01M4/134 , H01M4/131 , H01M4/623 , H01M2004/027
Abstract: A lithium secondary battery includes a positive electrode, a negative electrode, a separator, and an electrolyte, wherein the positive electrode includes a positive electrode active material layer having a positive electrode active material containing an overlithiated manganese-based oxide represented by Formula 1 below, and the negative electrode includes a negative electrode active material layer having a silicon-based negative electrode active material,
LiaNibCocMndMeO2 [Formula 1]
wherein, M is at least one selected from the group consisting of Al, B, Co, W, Mg, V, Ti, Zn, Ga, In, Ru, Nb, Sn, Sr, and Zr, and 1-
公开(公告)号：US20230369601A1
公开(公告)日：2023-11-16
申请号：US18030019
申请日：2022-03-18
Applicant: LG Energy Solution, Ltd.
Inventor： Tae Gon Kim , Wang Mo Jung , Min Kwak
CPC classification number: H01M4/625 , H01M4/5815 , H01M4/623 , B82Y30/00 , H01M2004/028
Abstract: An electrode and a secondary battery including the same are disclosed herein. In some embodiments, an electrode includes an electrode active material layer, wherein the electrode active material layer includes an electrode active material, a conductive agent, and sodium dodecyl sulfate (SDS), wherein the conductive agent includes carbon nanotube structures wherein 2 to 5,000 single-walled carbon nanotube units are bonded to each other, and a weight ratio of the carbon nanotube structure to the SDS is in a range of 1:3 to 1:30.
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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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80.发明公开公开(公告)号：US20230163295A1
公开(公告)日：2023-05-25
申请号：US18100778
申请日：2023-01-24
Applicant: LG Energy Solution, Ltd.
Inventor： Tae Gu Yoo , Younguk Park , Jintae Hwang , Wang Mo Jung , Sungbin Park
IPC: H01M4/525 , C01G53/00 , 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: Exemplary embodiments of positive electrode active materials in the form of single particles, and a method of preparing each of them, are provided. The single particles of the exemplary embodiments include single particles of a nickel-based lithium composite metal oxide, having a plurality of crystal grains, each having a size of 180 nm to 300 nm, as analyzed by a Cu Kα X-ray (X-rα). The single particles include a metal doped in the crystal lattice thereof. One embodiment includes a surface coating. The total content of the metal doped in the crystal lattice thereof and the metal of the metal oxide coated on the surface thereof is controlled in the range of 2500 ppm to 6000 ppm.
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