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公开(公告)号：US20240413408A1
公开(公告)日：2024-12-12
申请号：US18810528
申请日：2024-08-21
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Meng Qin , Yingjie Guan , Qingyan Ma , Huiling Yang , Yan Wen , Qisen Huang
IPC: H01M10/42 , H01M4/02 , H01M4/587 , H01M10/0568 , H01M10/0569
Abstract: Provided is a secondary battery including a positive electrode plate, a negative electrode plate, and an electrolyte. The positive electrode plate includes a positive current collector and a positive active material layer arranged on the positive current collector, and the positive active material layer contains a sodium ion active material. The negative electrode plate includes a negative current collector and a negative film layer arranged on at least one surface of the negative current collector, and the negative film layer contains a carbon material. The electrolyte is arranged between the positive electrode plate and the negative electrode plate, and the electrolyte contains a sodium borate.
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公开(公告)号：US20240372087A1
公开(公告)日：2024-11-07
申请号：US18772071
申请日：2024-07-12
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Qingyan Ma , Yan Wen , Yuzhen Zhao , Yingjie Guan , Qisen Huang
Abstract: The present application provides a positive electrode material composition, a method for the preparation thereof and a positive electrode plate, a secondary battery and an electrical device containing the same. The positive electrode material composition includes a positive electrode active material and an organopolysiloxane compound, wherein said positive electrode active material has a chemical formula of LiaAxMn1-yByP1-zCzO4-nDn. The positive electrode material composition of the present application enables the secondary battery to have a relatively high energy density, while further improving rate performance, cycling performance and/or high-temperature stability of the secondary battery.
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公开(公告)号：US20240239685A1
公开(公告)日：2024-07-18
申请号：US18584991
申请日：2024-02-22
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Qingyan Ma , Yuzhen Zhao , Yingjie Guan , Yan Wen , Qisen Huang
CPC classification number: C01G45/006 , H01M4/366 , H01M4/505 , H01M4/604 , C01P2002/72 , C01P2002/85 , C01P2004/84 , C01P2006/10 , C01P2006/40 , H01M2004/028
Abstract: A positive electrode active material, a method for the preparation thereof and a positive electrode plate, a secondary battery and an electrical device containing the same are provided. The positive electrode active material has a core-shell structure, comprising a core and a cladding layer covering at least a portion of said core, wherein said core has a chemical formula of LiaAxMn1-yByP1-zCzO4-nDn, said cladding layer comprises a polymer containing an electron withdrawing group. The positive electrode active material of the present application enables a secondary battery to have a relatively high energy density, while further having a significantly improved rate performance, cycling performance and/or high-temperature stability.
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公开(公告)号：US11916229B2
公开(公告)日：2024-02-27
申请号：US18335143
申请日：2023-06-15
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Qingyan Ma , Yuzhen Zhao , Yingjie Guan , Yan Wen , Qisen Huang
CPC classification number: H01M4/366 , H01M4/0404 , H01M4/0471 , H01M4/583 , H01M4/5825 , H01M4/622 , H01M2004/021 , H01M2004/028
Abstract: A positive electrode active material and a preparation method therefor, a positive electrode plate containing same, a secondary battery, and a power consuming device are provided. The positive electrode active material has a core-shell structure, comprising an inner core and a shell coating the inner core, wherein the inner core comprises Li1+xMn1−yAyP1−zRzO4, and the shell comprises a first coating layer coating the inner core, and a second coating layer coating the first coating layer, and a third coating layer coating the second coating layer. The positive electrode active material of the present application enables the secondary battery to have a higher energy density, and a good rate performance, cycling performance and safety performance.
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公开(公告)号：US11695112B2
公开(公告)日：2023-07-04
申请号：US17553839
申请日：2021-12-17
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Chengdu Liang , Yuzhen Zhao , Yingjie Guan , Yan Wen , Qisen Huang
CPC classification number: H01M4/386 , H01M4/0416 , H01M4/387 , H01M2004/027
Abstract: The present application provides a negative electrode active material, a process for preparing the same, and a secondary battery, a battery module, a battery pack and an apparatus related the same. The negative electrode active material comprises a core material and a polymer-modified coating layer on at least a part of a surface of the core material, the core material is one or more of a silicon-based negative electrode material and a tin-based negative electrode material, the polymer-modified coating layer comprises sulfur element and carbon element, the sulfur element has a mass percentage of from 0.2% to 4% in the negative electrode active material, the carbon element has a mass percentage of from 0.5% to 4% in the negative electrode active material, and the polymer-modified coating layer comprises a —S—C— bond.
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Patent Agency Ranking
公开(公告)号：US11420875B2
公开(公告)日：2022-08-23
申请号：US17586725
申请日：2022-01-27
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Chengdu Liang , Yuzhen Zhao , Yingjie Guan , Yan Wen , Qisen Huang
Abstract: This application belongs to the field of energy storage technology, and specifically discloses a negative active material including SiOx particles and a modified polymer coating layer covering the SiOx particles, in which 0
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公开(公告)号：US11316158B2
公开(公告)日：2022-04-26
申请号：US17159138
申请日：2021-01-26
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Yingjie Guan , Yuzhen Zhao , Yan Wen , Qisen Huang , Xin Liu
Abstract: The present application provide a secondary battery and related battery module, battery pack and apparatus. The secondary battery includes a positive electrode plate, a negative electrode plate, a separator and an electrolyte, wherein the secondary battery includes a positive active material selected from one or more of layered lithium nickel cobalt manganese oxide and layered lithium nickel cobalt aluminum oxide, and a negative active material including graphite and silicon-oxygen compound; the delithiation capacity A of the negative electrode film in the voltage range of 0.005V to the delithiation platform voltage and the delithiation capacity B of the negative electrode film in the voltage range of the delithiation platform voltage to 1.2V satisfy: 1A/B2; and when the secondary battery is discharged to a voltage of 2.5V, the voltage U of the negative electrode plate relative to a lithium metal reference electrode satisfies: 0.5VU0.7V.
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公开(公告)号：US20240413399A1
公开(公告)日：2024-12-12
申请号：US18810521
申请日：2024-08-21
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Meng Qin , Yingjie Guan , Qingyan Ma , Huiling Yang , Yan Wen , Qisen Huang
IPC: H01M10/0567 , H01M4/04 , H01M4/62 , H01M10/054 , H01M10/0569 , H01M50/249
Abstract: Provided is a secondary battery including a positive electrode plate, a negative electrode plate, and an electrolyte. The positive electrode plate includes a positive current collector and a positive active material layer arranged on the positive current collector, and the positive active material layer contains a sodium ion active material. The negative electrode plate includes a negative current collector and a metal film layer arranged on at least one surface of the negative current collector. A nucleation overpotential of sodium on the negative electrode plate is smaller than or equal to 35 mV. The electrolyte is arranged between the positive electrode plate and the negative electrode plate, and the electrolyte contains a sodium borate.
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公开(公告)号：US20240304798A1
公开(公告)日：2024-09-12
申请号：US18668268
申请日：2024-05-20
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Qingyan Ma , Yan Wen , Yingjie Guan , Yuzhen Zhao , Qisen Huang
CPC classification number: H01M4/366 , H01M4/505 , H01M4/5825 , H01M4/587 , H01M4/602 , H01M2004/028 , H01M2220/20
Abstract: Provided are a positive electrode active material, a method for the preparation thereof and a positive electrode plate, a secondary battery and an electrical device containing the same. The positive electrode active material has a core-shell structure, comprising a core and a shell cladding the core, wherein the core has a chemical formula of Li1+xMn1-yAyP1-zRzO4, the shell comprises a first cladding layer cladding the core, a second cladding layer cladding the first cladding layer, a third cladding layer cladding the second cladding layer and a fourth cladding layer cladding the third cladding layer. The positive electrode active material of the present application enables the secondary battery to have a relatively high energy density, and good cycling performance, rate performance and safety performance.
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公开(公告)号：US11973215B2
公开(公告)日：2024-04-30
申请号：US17059405
申请日：2020-07-14
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Chengdu Liang , Yingjie Guan , Yuzhen Zhao , Yan Wen , Qisen Huang
CPC classification number: H01M4/366 , H01M4/0404 , H01M4/0471 , H01M4/386 , H01M4/387 , H01M4/587 , H01M4/625 , H01M2004/021 , H01M2004/027 , H01M2220/20
Abstract: The present application discloses a negative active material, preparation process thereof and a secondary battery and the related battery module, battery pack and device. The negative active material comprises a core material and a modified polymer coating layer coated on at least a part of the outer surface of the core material, the core material comprises one or more of silicon-based materials and tin based materials, the coating layer comprises carbon element and nitrogen element, wherein the nitrogen element is present in the negative active material in a mass percentage of 0.1%˜0.66%, and the coating layer comprises a —C═N-linkage.
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