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公开(公告)号：US20240363868A1
公开(公告)日：2024-10-31
申请号：US18644656
申请日：2024-04-24
发明人： Xiaoping LIN , Yuansen XIE
IPC分类号： H01M4/62 , H01M4/02 , H01M10/0585
CPC分类号： H01M4/625 , H01M10/0585 , H01M2004/021 , H01M2004/027
摘要： A secondary battery includes a negative electrode plate and a separator. The negative electrode plate includes a three-dimensional framework. The three-dimensional framework includes a first framework layer and a second framework layer. The first framework layer includes one-dimensional conductive fibers. The second framework layer includes a zero-dimensional material, a one-dimensional material, and a two-dimensional material. The zero-dimensional material is a lithiophilic material. By adjusting and controlling the thicknesses of the three-dimensional framework, the first framework layer, and the second framework layer, the mass percent of the zero-dimensional material, and the mass ratio between the one-dimensional material and the two-dimensional material to fall within the ranges specified herein, a lithiophilic gradient is favorably constructed in the three-dimensional framework, so as to enable lithium metal to enter the interior of the three-dimensional framework and deposit from bottom upward, thereby improving the Coulombic efficiency and cycle performance of the secondary battery.
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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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公开(公告)号：US20240363833A1
公开(公告)日：2024-10-31
申请号：US18770656
申请日：2024-07-12
申请人： SK On Co., Ltd.
发明人： Eun Jun PARK , Gwi Ok PARK , Hyo Shik KIL , In Ae LEE
IPC分类号： H01M4/134 , B82Y30/00 , H01M4/02 , H01M4/139 , H01M10/052
CPC分类号： H01M4/134 , H01M4/139 , H01M10/052 , B82Y30/00 , H01M2004/027
摘要： Provided are a negative electrode for a lithium secondary battery and a method of manufacturing the same. The negative electrode for a lithium secondary battery according to an embodiment of the present invention includes a silicon-based negative electrode active material including iron and aluminum, wherein in ICP analysis of a negative electrode active material layer including the silicon-based negative electrode active material, contents of elements in the negative electrode active material layer satisfy the following Relations (1) to (3):
A
/
(
B
2
+
C
2
)
≤
4
,
500
(
1
)
5
≤
B
≤
1
,
500
(
2
)
3
≤
C
≤
1
,
000
(
3
)
wherein A is a Li content in ppm, B is an Fe content in ppm, and C is an Al content in ppm, based on the total weight of the ICP-analyzed negative electrode active material layer.-
5.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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6.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：US12132206B1
公开(公告)日：2024-10-29
申请号：US18747981
申请日：2024-06-19
发明人： Yan Zhuang , Shuo Gao , Yuhui Zhao
CPC分类号： H01M4/622 , C08F8/32 , H01M4/134 , H01M4/1395 , H01M4/386 , H01M2004/027
摘要： The present disclosure specifically relates to a method for preparing an electro-conductive polymer binding agent and an application, the method including the following steps: (1) dissolving 1,3,5,7-tetrakis(4-aminophenyl)adamantane and polyacrylic acid (PAA) in deionized water to form a solution A; (2) dissolving ammonium persulfate (APS) in deionized water to form a solution B; (3) mixing the solution A with the solution B to complete polymerization and cross-linking reactions, and performing vacuum filtration and washing to obtain a hydrogel; and (4) drying the hydrogel obtained in step (3) under vacuum conditions to obtain an electro-conductive polymer binding agent. Lithium-ion batteries obtained in the present disclosure feature high capacity, high cycle stability, and long service life.
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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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