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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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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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5.发明公开公开(公告)号：US20240356010A1
公开(公告)日：2024-10-24
申请号：US18506104
申请日：2023-11-09
申请人： AESC Dynamics Technology (Jiangsu) Ltd. , AESC Intelligent Innovation Dynamics Technology (Shanghai) Ltd. , AESC Dynamics Technology (Hubei) Ltd. , AESC Dynamics Technology (Ordos) Ltd.
发明人： Guanhong Wu , Jianping Zhu , Wenxu Wang , Fangjie Mo , Huayu Sun
CPC分类号： H01M4/366 , H01M4/0404 , H01M4/0471 , H01M4/505 , H01M4/525 , H01M2004/028
摘要： The invention discloses a lithium supplement agent, a preparation method thereof, an electrochemical device, and an electronic device. The lithium supplement includes a component A and a component B; a general chemical formula of the component A is: Li6-xM11-yN1yO4-z, wherein 0≤x≤5.95, 0≤y≤1, 0≤z≤2, M1 is selected from one or a plurality of Fe, Ni, Co, Cu, Al, Mn, Ti, and Si; N1 is selected from one or a plurality of Fe, Ni, Co, Cu, Al, Mn, Ti, and Si; a general chemical formula of the component B is: Li1+(a/(2+a))Mn2a/(2+a)M26/(2+a)−2O2, 0.2≤a≤1; the component B is at least partially located at a surface of the component A. A positive electrode material containing the lithium-supplement agent of the invention has better stability and high theoretical capacity, and is used in a lithium-ion battery to improve the energy density and cycle stability of the battery.
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公开(公告)号：US12126016B2
公开(公告)日：2024-10-22
申请号：US17281046
申请日：2020-03-31
IPC分类号： H01M4/505 , H01M4/525 , H01M10/0525 , H01M4/02
CPC分类号： H01M4/505 , H01M4/525 , H01M10/0525 , H01M2004/021 , H01M2004/028
摘要： A positive electrode material includes a lithium composite oxide, and the positive electrode material comprises stress relief particles. There are cavities inside the stress relief particles, and the cavities are closed structures. The positive electrode material that includes the stress relief particles can be used to effectively tackle a stress and relieve the stress in advance, relieve a strain of the positive electrode material used at a high voltage, avoid ruptures of particles of the positive electrode material, and enhance structural stability of the positive electrode material. The positive electrode material and the electrochemical device having the positive electrode material achieve good high-voltage cycle performance and cycle stability.
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公开(公告)号：US12126011B2
公开(公告)日：2024-10-22
申请号：US17943628
申请日：2022-09-13
申请人： ENEVATE CORPORATION
CPC分类号： H01M4/1395 , H01M4/0421 , H01M4/134 , H01M4/366 , H01M4/386 , H01M4/505 , H01M4/525 , H01M4/628
摘要： Various implementations of a method of forming an electrochemical cell include providing a first electrode, a second electrode, a separator between the first and second electrodes, and an electrolyte in a cell container. The first electrode can include silicon-dominant electrochemically active material. The silicon-dominant electrochemically active material can include greater than 50% silicon by weight. The method can also include exposing at least a part of the electrochemical cell to CO2, and forming a solid electrolyte interphase (SEI) layer on the first electrode using the CO2.
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8.发明公开公开(公告)号：US20240347687A1
公开(公告)日：2024-10-17
申请号：US18553239
申请日：2022-04-29
IPC分类号： H01M4/04 , H01G13/00 , H01M4/02 , H01M4/131 , H01M4/1391 , H01M4/505 , H01M4/525 , H01M4/66 , H01M4/74
CPC分类号： H01M4/0471 , H01G13/00 , H01M4/0404 , H01M4/0414 , H01M4/131 , H01M4/1391 , H01M4/505 , H01M4/525 , H01M4/662 , H01M4/747 , H01M2004/021 , H01M2004/028
摘要： A method of making a component for an energy storage device or an energy conversion device comprises the steps of: providing a sheet having a plurality of through-thickness apertures: forming a slurry comprising particles of a ceramic material: depositing the slurry onto the sheet having the plurality of through-thickness apertures; and sintering the slurry at a sintering temperature that is greater than 300° C. and less than or equal to 900° C.
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公开(公告)号：US12119489B2
公开(公告)日：2024-10-15
申请号：US16757100
申请日：2019-02-07
发明人： Hidekazu Hiratsuka
IPC分类号： H01M4/52 , H01M4/131 , H01M4/1391 , H01M4/485 , H01M4/505 , H01M4/525 , H01M10/0525 , H01M4/02
CPC分类号： H01M4/525 , H01M4/131 , H01M4/1391 , H01M4/485 , H01M4/505 , H01M10/0525 , H01M2004/028
摘要： A positive electrode active material for nonaqueous electrolyte secondary batteries includes a Ni-containing lithium transition metal oxide in the form of secondary particles formed by the aggregation of primary particles of the oxide, the proportion of Ni in the lithium transition metal oxide being not less than 80 mol % relative to the total number of moles of metal element(s) except Li, the average particle size of the primary particles being not less than 0.5 μm, the average particle size of the secondary particles being not less than 8 μm, the lithium transition metal oxide having a Ni disorder of not more than 3% and a crystallite size in the range of 100 to 200 nm according to X-ray diffractometry.
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公开(公告)号：US12119447B2
公开(公告)日：2024-10-15
申请号：US17362739
申请日：2021-06-29
发明人： Yanyan Xu , Chunrui Xu , Jianming Zheng
IPC分类号： H01M10/0567 , H01M4/131 , H01M4/36 , H01M4/505 , H01M4/525 , H01M10/0525 , H01M4/02
CPC分类号： H01M10/0567 , H01M4/131 , H01M4/364 , H01M4/505 , H01M4/525 , H01M10/0525 , H01M2004/021 , H01M2004/028 , H01M2300/0025
摘要： An electrochemical apparatus including a positive electrode, a negative electrode, an electrolyte, and a separator. The positive electrode includes a positive electrode current collector and a positive active material layer disposed on the positive current collector. An X-ray photoelectron spectroscopy of the positive active material layer has a peak at 164 eV to 175 eV. The electrolyte has a retention capability of 1.0 g/Ah to 4.0 g/Ah. The electrolyte improves cycle performance, over-discharge storage performance, and safety performance of the electrochemical apparatus.
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