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公开(公告)号：US12107266B2
公开(公告)日：2024-10-01
申请号：US17873861
申请日：2022-07-26
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Bangrun Wang , Na Liu
CPC classification number: H01M4/366 , H01M4/505 , H01M4/525 , H01M4/5825 , H01M10/0525 , H01M2004/021 , H01M2004/028
Abstract: This application provides a composite positive electrode material and a preparation method thereof, a secondary battery, a battery group including the secondary battery, and an electric apparatus including the secondary battery. The composite positive electrode material includes a lithium-rich metal oxide and a positive electrode active material covering at least a partial surface of the lithium-rich metal oxide, where the positive electrode active material is formed through in-situ reaction between a positive electrode active material precursor and a free lithium compound on the surface of the lithium-rich metal oxide.
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公开(公告)号：US12021259B2
公开(公告)日：2024-06-25
申请号：US17866409
申请日：2022-07-15
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Yongsheng Guo , Jiarui Tian , Cong Cheng , Na Liu , Chuying Ouyang , Yuanyuan Lan , Shuojian Su
IPC: H01M50/446 , H01M50/403 , H01M50/414 , H01M50/431 , H01M50/449 , H01M50/451 , H01M50/491
CPC classification number: H01M50/446 , H01M50/403 , H01M50/414 , H01M50/431 , H01M50/449 , H01M50/451 , H01M50/491 , H01M2220/20
Abstract: This application provides a separator, an electrical apparatus containing such separator, and preparation methods thereof. The separator includes a coating layer containing an organic-inorganic hybrid composite compound and provides improved performance in a number of aspects, and the organic-inorganic hybrid composite compound is formed by periodically assembling, along at least one spatial direction, basic units expressed by formula I, Lx(MaCb)y·Az. This application further provides a battery and electrical device containing such separator, preparation methods thereof, organic-inorganic hybrid composite compound for improving performance of a separator.
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公开(公告)号：US20230387416A1
公开(公告)日：2023-11-30
申请号：US18167065
申请日：2023-02-09
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Haotian Xie , Na Liu , Bangrun Wang
IPC: H01M4/62 , H01M4/04 , H01M4/505 , H01M4/525 , H01M10/0568
CPC classification number: H01M4/623 , H01M4/0404 , H01M4/505 , H01M4/525 , H01M10/0568 , H01M2004/028
Abstract: A positive electrode plate is provided. The positive electrode plate comprises a positive electrode current collector, a positive electrode active material layer provided on at least one surface of the positive electrode current collector, and a lithium supplementing layer provided on a surface of the positive electrode active material layer opposite to the positive electrode current collector. The lithium supplementing layer comprises a positive electrode lithium supplementing material, a conductive agent and a binder A, the positive electrode lithium supplementing material comprises a lithium-rich metal oxide, and the binder A is selected from polymers containing a first monomer unit shown by a formula I and a second monomer unit shown by a formula II, where the R1, R2, R3, R4, R5 and R6 are each independently selected from hydrogen or substituted or unsubstituted C1 to C8 alkyl, and the R is selected from substituted or unsubstituted C1 to C8 alkyl.
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14.发明公开公开(公告)号：US20230307635A1
公开(公告)日：2023-09-28
申请号：US18321318
申请日：2023-05-22
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Rui DU , Yongchao Liu , Chongheng Shen , Sihui Wang , Na Liu
IPC: H01M4/525 , C01G53/00 , H01M4/36 , H01M4/505 , H01M10/0525
CPC classification number: H01M4/525 , C01G53/50 , H01M4/366 , H01M4/505 , H01M10/0525 , C01P2002/54 , C01P2004/51 , C01P2004/61 , C01P2006/12 , C01P2006/40 , H01M2004/021
Abstract: This application provides a positive active material, a positive electrode plate, an electrochemical energy storage apparatus, and an apparatus. The positive active material is LixNiyCozMkMepOrAm, or LixNiyCozMkMepOrAm with a coating layer on its surface; and the positive active material is single crystal or quasi-single crystal particles, and a particle size Dn10 of the positive active material satisfies: 0.3 μm≤Dn10≤2 μm. In this application, particle morphology of the positive active material and an amount of micro powder in the positive active material are properly controlled, to effectively reduce side reactions between the positive active material and an electrolyte solution, decrease gas production of the electrochemical energy storage apparatus, and improve storage performance of the electrochemical energy storage apparatus without deteriorating an energy density, cycle performance, and rate performance of the electrochemical energy storage apparatus.
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公开(公告)号：US20240387819A1
公开(公告)日：2024-11-21
申请号：US18786584
申请日：2024-07-29
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Qiang Chen , Qi Wu , Huan Ni , Chongheng Shen , Shuxing Huan , Dong Zhao , Jingpeng Fan , Jing Wang , Na Liu
Abstract: The present application provides a positive electrode active material and a preparation method thereof. The positive electrode active material of the present application has high compaction density, improved structural stability, high filling degree among particles, good dispersibility, and good material processing performance, which can effectively improve the energy density of a battery, and improve the cycling performance and safety performance of the battery. The present application further provides a secondary battery, a battery module, a battery pack, and an electrical device including the positive electrode active material.
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Patent Agency Ranking
16.发明公开公开(公告)号：US20240266673A1
公开(公告)日：2024-08-08
申请号：US18624235
申请日：2024-04-02
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Yuanyuan Lan , Jianrui Yang , Haiyi Hong , Cong Cheng , Na Liu , Haizu Jin
IPC: H01M50/446 , H01M50/417 , H01M50/426 , H01M50/449 , H01M50/494
CPC classification number: H01M50/446 , H01M50/417 , H01M50/426 , H01M50/449 , H01M50/494
Abstract: This application relates to a separator, including a substrate and a coating layer provided on at least one surface of the substrate. The coating layer includes organic particles and inorganic particles, the organic particles include first-type organic particles, the inorganic particles form an inorganic particle layer, and the first-type organic particles are embedded into the inorganic particle layer and form bulges on a surface of the inorganic particle layer. A number-based median particle size of the first-type organic particles is ≥12 μm, and a ratio of an average height of the bulges to a thickness of the inorganic particle layer is ≥4. This application further relates to a separator preparation method, a secondary battery containing such separator, and a related battery module, battery pack, and apparatus.
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17.发明公开公开(公告)号：US20240199441A1
公开(公告)日：2024-06-20
申请号：US18412601
申请日：2024-01-15
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Dong Zhao , Qi Wu , Chongheng Shen , Bangrun Wang , Qiang Chen , Jingpeng Fan , Na Liu
CPC classification number: C01G53/50 , H01M4/366 , H01M4/485 , H01M4/505 , H01M4/525 , H01M10/00 , C01P2002/08 , C01P2004/61 , C01P2004/84 , C01P2006/12 , H01M2004/021 , H01M2004/028
Abstract: This application relates to a positive active material, a method for preparing same, an electrode plate, a secondary battery, and an electrical device. The positive active material includes: a core material, including a lithium-rich manganese-based positive electrode material; and a cladding layer, covering an outer surface of the core material, where the cladding layer includes an oxygen-ion conductor and a lithium-ion conductor.
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18.发明公开公开(公告)号：US20240194853A1
公开(公告)日：2024-06-13
申请号：US18585057
申请日：2024-02-23
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Rui Du , Na Liu , Yongchao Liu , Sihui Wang , Deyu Zhao , Xue Leng
CPC classification number: H01M4/134 , H01M4/131 , H01M4/366 , H01M4/505 , H01M4/525 , H01M10/0525 , H01M2004/021 , H01M2004/028 , H01M2220/20
Abstract: This application provides a positive active material, a positive electrode plate, an electrochemical energy storage apparatus, and an apparatus. The positive active material is LixNiyCozMkMepOrAm or LixNiyCozMkMepOrAm whose surface is provided with a coating layer. The positive active material is secondary particles, and a particle size Dn10 of the positive active material satisfies: 0.5 μm≤Dn10≤3 μm. In this application, particle morphology of the positive active material and the amount of micro powder in the positive active material are properly controlled, to effectively reduce side reactions between the positive active material and an electrolyte, decrease gas production of the electrochemical energy storage apparatus, and improve storage performance of the electrochemical energy storage apparatus without deteriorating energy density, cycle performance and rate performance of the electrochemical energy storage apparatus.
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公开(公告)号：US11967706B2
公开(公告)日：2024-04-23
申请号：US17933120
申请日：2022-09-18
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Bangrun Wang , Zhenguo Zhang , Chongheng Shen , Na Liu
IPC: H01M4/36 , C01G49/00 , C01G51/00 , C01G53/00 , H01M4/04 , H01M4/48 , H01M4/485 , H01M4/50 , H01M4/505 , H01M4/52 , H01M4/525 , H01M10/05 , H01M10/0525 , H01M4/02
CPC classification number: H01M4/366 , C01G49/0027 , C01G49/0045 , C01G49/0072 , C01G51/42 , C01G53/42 , H01M4/0471 , H01M4/485 , H01M4/505 , H01M4/525 , H01M10/0525 , C01P2002/50 , C01P2004/03 , C01P2004/61 , C01P2004/84 , C01P2006/40 , H01M2004/021 , H01M2004/028
Abstract: A composite metal oxide material and a preparation method thereof, a positive electrode plate, a secondary battery, a battery module, a battery pack and an electrical device are provided. The composite metal oxide material includes a central core and a coating layer on the surface of the central core, in which the central core material has a chemical formula of Li5FexM1-xO4, 0.6≤x≤1; the coating layer material has a chemical formula of LiMO2, M is one or more metal elements with +3 valence, and the absolute value of the difference between the +3-valence ion radius of Fe and the +3-valence ion radius of M is ≤0.02 nm. The composite metal oxide material of the present disclosure makes the secondary battery have high charge capacity, high discharge capacity and long cycle life.
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20.发明授权公开(公告)号：US11949093B2
公开(公告)日：2024-04-02
申请号：US17132567
申请日：2020-12-23
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Rui Du , Na Liu , Yongchao Liu , Sihui Wang , Deyu Zhao , Xue Leng
CPC classification number: H01M4/134 , H01M4/131 , H01M4/366 , H01M4/505 , H01M4/525 , H01M10/0525 , H01M2004/021 , H01M2004/028 , H01M2220/20
Abstract: This application provides a positive active material, a positive electrode plate, an electrochemical energy storage apparatus, and an apparatus. The positive active material is LixNiyCozMkMepOrAm or LixNiyCozMkMepOrAm whose surface is provided with a coating layer. The positive active material is secondary particles, and a particle size Dn10 of the positive active material satisfies: 0.5 μm≤Dn10≤3 μm. In this application, particle morphology of the positive active material and the amount of micro powder in the positive active material are properly controlled, to effectively reduce side reactions between the positive active material and an electrolyte, decrease gas production of the electrochemical energy storage apparatus, and improve storage performance of the electrochemical energy storage apparatus without deteriorating energy density, cycle performance and rate performance of the electrochemical energy storage apparatus.
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