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41.发明公开公开(公告)号：US20230352678A1
公开(公告)日：2023-11-02
申请号：US18214800
申请日：2023-06-27
发明人： Tae Gu Yoo , Younguk Park , Jintae Hwang , Wang Mo Jung , Sungbin Park
IPC分类号： H01M4/525 , C01G53/00 , H01M4/505 , H01M10/0525
CPC分类号： H01M4/525 , C01G53/50 , H01M4/505 , H01M10/0525 , C01P2002/52 , C01P2002/60 , C01P2004/03 , C01P2004/04 , C01P2004/61 , C01P2006/40 , H01M2004/028
摘要： A positive electrode active material in the form of a single particle and a lithium secondary battery containing the positive electrode active material thereof are provided. The positive electrode active material has a nickel-based lithium composite metal oxide single particle. The single particle has a plurality of crystal grains. An average particle size (D50) of the single particle is from 3.5 μm to 8 μm. The single particle includes a metal doped in the crystal lattice thereof.
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42.发明公开公开(公告)号：US20230331583A1
公开(公告)日：2023-10-19
申请号：US18004743
申请日：2022-02-18
发明人： Tae Gu Yoo , Wang Mo Jung , Chi Ho Jo , Ji Hye Kim , Hae Jung Jung , Jong Wook Heo
IPC分类号： C01G51/00 , H01M10/052
CPC分类号： C01G51/42 , C01G51/006 , H01M10/052 , C01P2004/61 , C01P2006/40
摘要： Provided are a sacrificial positive electrode material with a reduced gas generation amount and a method of preparing the same. The method includes calcinating a raw material mixture of lithium oxide (Li2O) and cobalt oxide (CoO) to prepare a lithium cobalt metal oxide, wherein the lithium oxide (Li2O) has an average particle size (D50) of 50 µm or less, and the resulting sacrificial positive electrode material has an electrical conductivity of 1 × 10-4 S/cm or more. The method of preparing a sacrificial positive electrode material can reduce the generation of gas, particularly, oxygen (O2) gas, in an electrode assembly during charging of a battery by adjusting the electrical conductivity of the sacrificial positive electrode material within a specific range using lithium oxide that satisfies a specific size, and thus the stability and lifespan of the battery including the same can be effectively enhanced.
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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
发明人： So Ra Baek , Min Suk Kang , Sang Wook Lee , Wang Mo Jung , Dong Hun Lee , Hye Lim Jeon , Eun Sol Lho
IPC分类号： 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分类号： 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
摘要： 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.-
44.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
发明人： Chi Ho Jo , Wang Mo Jung , Hye Hyeon Kim , Tae Gu Yoo , Jin Tae Hwang , Hae Jung Jung , Jong Wook Heo
IPC分类号： H01M4/505 , H01M4/04 , H01M4/587 , H01M4/131 , H01M4/1391 , H01M4/525 , H01M10/052 , H01M4/02
CPC分类号： H01M4/505 , H01M4/0404 , H01M4/587 , H01M4/131 , H01M4/1391 , H01M4/525 , H01M10/052 , H01M2004/028
摘要： 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
发明人： Seul Ki Chae , Dae Jin Lee , Dong Hwi Kim , Jin Tae Hwang , Hyeong Il Kim , Wang Mo Jung , Dong Hun Lee
IPC分类号： C23C16/455 , H01M4/36 , H01M4/505 , H01M4/525 , H01M4/04
摘要： 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
发明人： Gi Beom Han , Wang Mo Jung , Sang Wook Lee , Hak Yoon Kim , So Ra Baek , Jung Min Han
摘要： 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
发明人： Jung Min Han , Gi Beom Han , Sang Wook Lee , Hak Yoon Kim , So Ra Baek , Wang Mo Jung
摘要： 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
发明人： Jungmin Han , Gi Beom Han , Sang Wook Lee , Hakyoon Kim , Sora Baek , Wang Mo Jung
IPC分类号： H01M4/525 , H01M4/505 , H01M10/0525
摘要： 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：US20240313210A1
公开(公告)日：2024-09-19
申请号：US18677050
申请日：2024-05-29
发明人： Gi Beom Han , Sang Min Park , Ji Hye Kim , Tae Gu Yoo , Wang Mo Jung
CPC分类号： H01M4/505 , H01M4/0471 , H01M4/366 , H01M4/525 , H01M10/0525 , H01M2004/028
摘要： 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
发明人： Seung Won Park , Yo Han Kwon , Je Young Kim , Seok Koo Kim , Wang Mo Jung , Chul Haeng Lee , Byung Chun Park
CPC分类号： H01M4/364 , H01M4/133 , H01M4/366 , H01M4/483 , H01M4/505 , H01M4/587 , H01M4/625 , H01M10/0525 , H01M2004/021 , H01M2004/027 , H01M2004/028
摘要： 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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