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公开(公告)号：US20240363852A1
公开(公告)日：2024-10-31
申请号：US18770550
申请日：2024-07-11
发明人： Pilsang YUN , Jangsuk HYUN , Wooyoung YANG
CPC分类号： H01M4/525 , C01G53/006 , H01M4/366 , H01M4/505 , H01M10/0525 , C01P2004/50 , H01M2004/028
摘要： A nickel-based active material precursor for a lithium secondary battery includes: a secondary particle including a plurality of particulate structures, wherein each particulate structure includes a porous core portion and a shell portion, the shell portion including primary particles radially arranged on the porous core portion; and the secondary particle has a plurality of radial centers. When the nickel-based active material precursor is used, a nickel-based positive active material having a short lithium ion diffusion distance, in which intercalation and deintercalation of lithium are facilitated, may be obtained. A lithium secondary battery manufactured using the positive active material may exhibit enhanced lithium availability, and may exhibit enhanced capacity and lifespan due to suppression of crack formation in the active material during charging and discharging.
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公开(公告)号：US20240363848A1
公开(公告)日：2024-10-31
申请号：US18640745
申请日：2024-04-19
发明人： So YUBUCHI , Jun Yoshida , Hiroo Nozaki
IPC分类号： H01M4/505 , H01M4/02 , H01M10/054
CPC分类号： H01M4/505 , H01M10/054 , H01M2004/021 , H01M2004/028
摘要： Disclosed is a positive electrode active material having a P2-type structure and having a large energy density. The positive electrode active material of the present disclosure comprises a Na-containing oxide. The Na-containing oxide particles have a P2-type structure. The Na-containing oxide particles at least comprise at least one element among Mn, Ni, and Co; Na; and O as constituent elements. The Na-containing oxide particles have an average particle diameter of 2.0 μm or more. The Na-containing oxide particles have an average aspect ratio of 1.0 or greater and 3.0 or less.
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3.发明公开公开(公告)号：US20240360004A1
公开(公告)日：2024-10-31
申请号：US18764850
申请日：2024-07-05
发明人： Tomohiro YOKOYAMA
CPC分类号： C01G53/50 , F27B9/28 , F27B9/36 , H01M4/505 , H01M4/525 , F27D2003/0042 , H01M2004/028
摘要： Provided is a production apparatus for a cathode active material for lithium ion secondary batteries which can improve productivity. The production apparatus is provided with: a conveying device that conveys a raw material of a cathode active material, the raw material containing a metallic compound and a lithium compound, the metallic compound including at least one metallic element selected from the group consisting of nickel, cobalt, and manganese; and a heating unit in which the raw material is heated, wherein the heating unit has at least one heating member that heats the raw material by heat conduction, the conveying device has a conveying member that conveys the raw material, the heating member heats the raw material via the conveying member, and the conveying member has a retaining part for the raw material of the cathode active material along a side part thereof in a width direction.
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4.发明授权公开(公告)号：US12132217B2
公开(公告)日：2024-10-29
申请号：US17970603
申请日：2022-10-21
发明人： Chengdu Liang , Quanguo Li , Yonghuang Ye , Qian Liu , Haizu Jin , Wei Li
CPC分类号： H01M50/204 , H01M4/525 , H01M4/5825 , H01M4/583 , H01M10/0404 , H01M2004/021 , H01M2004/027 , H01M2004/028
摘要： The present application discloses a battery module, a battery pack, an apparatus, and a method and device for manufacturing a battery module. The battery module includes n first-type battery cells and m second-type battery cells, n≥1, m≥1, and the n first-type battery cells and them second-type battery cells are arranged and satisfy: VED1>VED2, ΔF1>ΔF2, and (ΔF1×n+ΔF2×m)/(n+m)≤0.8×ΔF1, where VED1, VED2, ΔF1 and ΔF2 are respectively defined in the description.
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公开(公告)号：US12132199B2
公开(公告)日：2024-10-29
申请号：US18207211
申请日：2023-06-08
发明人： Byung Chun Park , Hong Kyu Park , Wang Mo Jung , Seong Hoon Kang
IPC分类号： H01M4/36 , C01G53/00 , H01M4/505 , H01M4/525 , H01M10/052 , H01M10/0525 , H01M4/02
CPC分类号： H01M4/366 , C01G53/42 , C01G53/50 , H01M4/505 , H01M4/525 , H01M10/052 , H01M10/0525 , C01P2004/61 , C01P2004/84 , C01P2004/88 , H01M2004/021 , H01M2004/028
摘要： A positive electrode active material includes a core including a first lithium complex metal oxide, and a shell located surrounding the core and including a second lithium complex metal oxide, and further includes a buffer layer located between the core and the shell. The buffer layer includes a pore, and a three-dimensional network structure of a third lithium complex metal oxide which is connecting the core and the shell. Accordingly, the positive electrode active material is capable of enhancing an output property and a life property by minimizing destruction of the active material caused by a rolling process during the electrode preparation, maximizing reactivity with an electrolyte liquid, and by the particles that form the shell having a crystal structure with orientation facilitating lithium ion intercalation and deintercalation.
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公开(公告)号：US12132189B2
公开(公告)日：2024-10-29
申请号：US17961302
申请日：2022-10-06
发明人： SeungJun Min , Sung Hoon Jeong , Hyoup Je Cho
CPC分类号： H01M4/0409 , B05C1/08 , B05C3/125 , H01M4/0411 , H01M4/0471 , H01M4/366 , H01M4/628 , H01M2004/028
摘要： A method for manufacturing a positive electrode for a secondary battery includes unwinding a positive electrode base material, transferring the positive electrode base material to a first coating unit through a plurality of rollers, coating an insulating material at predetermined positions on opposite sides of the positive electrode base material with respect to a transfer direction of the positive electrode base material to form insulating portions, drying the insulating material to form insulating portions, coating a positive electrode slurry between the insulating portions on the opposite sides of the positive electrode base material, and drying the positive electrode slurry to form a positive electrode film formed with a positive electrode portion on the positive electrode base material.
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公开(公告)号：US20240356098A1
公开(公告)日：2024-10-24
申请号：US18684825
申请日：2022-08-19
发明人： Min-Seo KIM , Doo-Kyung YANG , Se-Ho PARK , Yong-Sik SEO , Eun-Kyu SEONG , Jeong-Bae LEE
CPC分类号： H01M10/54 , B09B3/40 , B09B3/70 , H01M4/366 , H01M4/525 , H01M4/62 , B09B2101/16 , H01M2004/028
摘要： Disclosed is a method of producing a reusable positive electrode active material, including the steps of: dipping a stack cell including a stacked and integrated positive electrode plate, separator and negative electrode plate, in a polar solvent to separate the positive electrode plate; heat treating the separated positive electrode plate to perform thermal decomposition of a binder and a conductive material in a positive electrode material layer of the positive electrode plate, separating a current collector from the positive electrode plate and recovering an active material from the positive electrode active material layer; washing the recovered active material with an aqueous lithium compound solution showing alkalinity in an aqueous solution state; and adding a lithium precursor to the washed active material and carrying out annealing to obtain a reusable positive electrode active material.
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公开(公告)号：US20240356074A1
公开(公告)日：2024-10-24
申请号：US18686329
申请日：2022-08-25
发明人： Makoto AKUTSU , Toshiro KUME , Takao SATO
IPC分类号： H01M10/0567 , H01M4/02 , H01M4/131 , H01M4/525
CPC分类号： H01M10/0567 , H01M4/131 , H01M4/525 , H01M2004/028 , H01M2300/0025
摘要： A nonaqueous electrolyte for a nonaqueous electrolyte battery including: a nonaqueous solvent, an electrolytic salt, and a thiophene compound having at least one electron-withdrawing group R including oxygen or nitrogen, wherein a content of the thiophene compound is 0.01 mass % or more and 10 mass % or less.
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公开(公告)号：US20240356069A1
公开(公告)日：2024-10-24
申请号：US18758405
申请日：2024-06-28
发明人： Kefei WANG
IPC分类号： H01M10/0566 , H01M4/02 , H01M4/36 , H01M4/525 , H01M10/0525
CPC分类号： H01M10/0566 , H01M4/364 , H01M4/525 , H01M10/0525 , H01M2004/028
摘要： An electrochemical apparatus including: a positive electrode, a negative electrode, and an electrolyte, where the positive electrode includes a positive electrode current collector and a positive electrode active material layer formed on the positive electrode current collector. The positive electrode active material layer includes a positive electrode active material, where the positive electrode active material includes lithium nickel cobalt manganate containing aluminum, zirconium, and tungsten. The electrolyte includes a dinitrile compound. The electrochemical apparatus according to this application has improved overcharge resistance and safety under high temperature and high pressure.
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公开(公告)号：US20240356039A1
公开(公告)日：2024-10-24
申请号：US18759052
申请日：2024-06-28
发明人： Kenji NAGAO , Yusuke NISHIO , Izuru SASAKI
IPC分类号： H01M4/62 , H01M4/02 , H01M4/36 , H01M10/0525 , H01M10/0562
CPC分类号： H01M4/625 , H01M4/366 , H01M10/0525 , H01M10/0562 , H01M2004/021 , H01M2004/028 , H01M2300/0068
摘要： A positive electrode material according to the present disclosure includes a mixture of a positive electrode active material, a solid electrolyte, and a conductive material. The conductive material includes a first conductive material having an average long-axis diameter of 1 μm or more and a second conductive material having an average particle diameter of more than 23 nm and 100 nm or less. A ratio of a volume of the positive electrode active material to a sum of the volume of the positive electrode active material and a volume of the solid electrolyte is 50% or more and 90% or less. A battery according to the present disclosure includes a positive electrode including the positive electrode material, a negative electrode, and an electrolyte layer disposed between the positive electrode and the negative electrode.
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