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公开(公告)号：US20230327107A1
公开(公告)日：2023-10-12
申请号：US18210427
申请日：2023-06-15
Applicant: LG Energy Solution, Ltd.
Inventor： So Ra Baek , Min Suk Kang , Sang Wook Lee , Wang Mo Jung , Dong Hun Lee , Hye Lim Jeon , Eun Sol Lho
IPC: H01M4/525 , H01M4/04 , H01M4/36 , H01M4/505 , H01M10/0525 , H01M4/13915 , H01M4/131 , H01M4/1315 , H01M4/1391 , H01M4/62 , C01G53/00 , C01B35/12
CPC classification number: H01M4/525 , H01M4/0471 , H01M4/366 , H01M4/505 , H01M10/0525 , H01M4/13915 , H01M4/131 , H01M4/1315 , H01M4/1391 , H01M4/628 , C01G53/50 , C01B35/121 , H01M2004/028
Abstract: A positive electrode active material for a secondary battery includes a lithium composite transition metal oxide including nickel (Ni), cobalt (Co), and manganese (Mn), and a glassy coating layer formed on surfaces of particles of the lithium composite transition metal oxide, wherein, in the lithium composite transition metal oxide, an amount of the nickel (Ni) in a total amount of transition metals is 60 mol % or more, and an amount of the manganese (Mn) is greater than an amount of the cobalt (Co), and the glassy coating layer includes a glassy compound represented by Formula 1.
LiaM1bOc [Formula 1]
wherein, M1 is at least one selected from the group consisting of boron (B), aluminum (Al), silicon (Si), titanium (Ti), and phosphorus (P), and 1≤a≤4, 1≤b≤8, and 1≤c≤20.-
62.发明公开公开(公告)号：US20230246180A1
公开(公告)日：2023-08-03
申请号：US18004263
申请日：2022-06-02
Applicant: LG Energy Solution, Ltd.
Inventor： Chi Ho Jo , Wang Mo Jung , Hye Hyeon Kim , Tae Gu Yoo , Jin Tae Hwang , Hae Jung Jung , Jong Wook Heo
IPC: H01M4/505 , H01M4/04 , H01M4/587 , H01M4/131 , H01M4/1391 , H01M4/525 , H01M10/052 , H01M4/02
CPC classification number: H01M4/505 , H01M4/0404 , H01M4/587 , H01M4/131 , H01M4/1391 , H01M4/525 , H01M10/052 , H01M2004/028
Abstract: Provided are a positive electrode for a lithium secondary battery and a lithium secondary battery containing the same. The positive electrode includes a positive electrode current collector and a positive electrode mixture layer disposed thereon and includes a positive electrode active material, a positive electrode additive represented by Formula 1 (LipCo(1-q)M1qO4), a conductive material, and a binder. Furthermore, Equation 1 (RLCZO/R0) is 1.55 or less, wherein RLCO represents an electrode sheet resistance when the positive electrode additive represented by Formula 1 is contained in the positive electrode mixture layer, and R0 represents an electrode sheet resistance when the positive electrode additive represented by Formula 1 is not contained in the positive electrode mixture layer. The positive electrode is manufactured using a pre-dispersion containing the positive electrode additive in a positive electrode mixture layer as an irreversible additive.
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公开(公告)号：US20230002899A1
公开(公告)日：2023-01-05
申请号：US17781925
申请日：2021-01-12
Applicant: LG Energy Solution, Ltd.
Inventor： Seul Ki Chae , Dae Jin Lee , Dong Hwi Kim , Jin Tae Hwang , Hyeong Il Kim , Wang Mo Jung , Dong Hun Lee
IPC: C23C16/455 , H01M4/36 , H01M4/505 , H01M4/525 , H01M4/04
Abstract: A method of preparing a positive electrode active material for a secondary battery includes preparing a lithium composite transition metal oxide which includes nickel, cobalt, and manganese and contains 60 mol % or more of the nickel among all metals except lithium, adding a moisture absorbent and the lithium composite transition metal oxide into an atomic layer deposition (ALD) reactor, and adding a coating metal precursor into the atomic layer deposition (ALD) reactor and forming a metal oxide coating layer on surfaces of particles of the lithium composite transition metal oxide by atomic layer deposition (ALD).
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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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Patent Agency Ranking
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：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：US12261263B2
公开(公告)日：2025-03-25
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 , H01M4/131 , H01M4/134 , H01M4/62 , H01M4/02
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
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69.发明申请公开(公告)号：US20250070134A1
公开(公告)日：2025-02-27
申请号：US18723145
申请日：2022-12-23
Applicant: LG Energy Solution, Ltd.
Inventor： Chi Ho Jo , Wang Mo Jung , Tae Gu Yoo , Jin Tae Hwang , Hae Jung Jung , Jong Wook Heo , Hyeon Jin Cho
Abstract: A positive electrode active material includes lithium nickel-based oxide particles having a single-particle form composed of a single nodule or a single-particle-like form, which is a complex of at most 30 nodules. The positive electrode active material further includes a coating layer formed on the surface of the lithium nickel-based oxide particles, wherein the coating layer is formed by using a nano-sized coating precursor which is a chelate complex comprising lithium, nickel, cobalt, and Ma, where Ma is Mn, Al, or a combination thereof.
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公开(公告)号：US12183913B2
公开(公告)日：2024-12-31
申请号：US18411502
申请日：2024-01-12
Applicant: LG Energy Solution, Ltd.
Inventor： Tae Gu Yoo , Young Uk Park , Jin Tae Hwang , Wang Mo Jung , Sung Bin Park
IPC: H01M4/131 , H01M4/04 , H01M4/134 , H01M4/1391 , H01M4/1395 , H01M4/36 , H01M4/525 , H01M10/0525 , H01M4/02
Abstract: A positive electrode active material includes a lithium transition metal oxide and a coating element M3-containing coating layer formed on a surface of the lithium transition metal oxide, wherein M3 comprises at least one of Al, Ti, Mg, Zr, W, Y, Sr, or Co, wherein the lithium transition metal oxide is doped with a doping element M2, wherein M2 includes at least one of Al, Ti, Mg, Zr, W, Y, Sr, Co, F, Si, Na, Cu, Fe, Ca, S, or B, wherein the lithium transition metal oxide has a single particle form, and includes a center portion having a layered structure and a surface portion having a rock-salt structure, and the total amount of the doping element M2 and the coating element M3 is in a range of 4,580 ppm to 9,120 ppm based on a total weight of the positive electrode active material.
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