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公开(公告)号：US11108051B2
公开(公告)日：2021-08-31
申请号：US15968654
申请日：2018-05-01
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Yujun Chen , Xinliang Kuang , Long Wang , Na Liu , Huan Ni
IPC: H01M4/62 , H01M4/36 , H01M4/525 , B01J13/08 , H01M10/0525 , H01M4/505 , H01M4/04 , H01M4/1391 , H01M4/131 , H01M4/02
Abstract: The present disclosure provides a modified positive electrode active material. The modified positive electrode active material comprises a positive electrode active material inner core; a metal oxide layer comprising a metal oxide and coated on a surface of the positive electrode active material inner core; and a polymer layer comprising a polymer and coated on a surface of the metal oxide layer, the polymer being one or more selected from a group consisting of polyacrylic acid, polymethyl methacrylate, polyacrylamide and lithium polyacrylate. The modified positive electrode active material of the present disclosure has better structure stability and thermal stability, when the modified positive electrode active material is applied in the electrochemical energy storage device, cycle performance and safety performance of the electrochemical energy storage device can be significantly improved without decreasing energy density of the electrochemical energy storage device.
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22.发明申请公开(公告)号：US20210126242A1
公开(公告)日：2021-04-29
申请号：US17135552
申请日：2020-12-28
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Rui DU , Yongchao Liu , Deyu Zhao , Na Liu
Abstract: This application relates to the field of battery technologies, and in particular, to a high-compacted-density positive electrode material and an electrochemical energy storage apparatus. The positive electrode material includes a lithium-nickel transition metal oxide A and a lithium-nickel transition metal oxide B. The lithium-nickel transition metal oxide A is secondary particles, whose chemical formula is shown in formula I: Lia1(Nib1Coc1Mnd1)x1M1-x1O2-e1Xe1. The lithium-nickel transition metal oxide B is a monocrystalline structure or a monocrystalline-like structure, whose chemical formula is shown in formula II: Lia2(Nib2Coc2Mnd2)x2M′1-x2O2-e2X′e2 (II). The positive electrode material of this application includes the large-particle lithium-nickel transition metal oxide A and the small-particle lithium-nickel transition metal oxide B to improve an energy density of the battery. A degree of crystallinity and particle size distribution of the mixed positive electrode material can improve a compacted density of the high-nickel active material, and ensure lower gassing and good cycle performance.
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23.发明授权公开(公告)号：US10720643B2
公开(公告)日：2020-07-21
申请号：US15877403
申请日：2018-01-23
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Xinliang Kuang , Yujun Chen , Long Wang , Na Liu
IPC: H01M4/525 , H01M4/131 , H01M10/0525 , H01M4/02
Abstract: The present invention provides a positive electrode material for a lithium ion battery including a nickel-containing positive electrode material and a coating layer coated on the nickel-containing positive electrode material, wherein the nickel-containing positive electrode material has a chemical formula of LiNixM1-xO2, 0.5≤x≤1, M is at least one of Co, Mn and Al, and the coating layer contains lithium vanadium phosphate and silica. Compared with the prior art, the coating layer containing lithium vanadium phosphate and silica coated on the nickel-containing positive electrode material of the present invention can remarkably improve the dynamic performances and the cycle performances at high voltage of the lithium ion battery. In addition, the present invention also provides a method for preparing the positive electrode material a lithium ion battery containing the positive electrode material.
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公开(公告)号：US20240262712A1
公开(公告)日：2024-08-08
申请号：US18639987
申请日：2024-04-19
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Jingpeng Fan , Zhenguo Zhang , Na Liu , Qi Wu , Qiang Chen , Dong Zhao , Jing Wang
IPC: C01G53/00
CPC classification number: C01G53/54 , C01P2002/32 , C01P2002/72 , C01P2004/03 , C01P2004/51 , C01P2004/61 , C01P2006/12 , C01P2006/40
Abstract: Provided is a spinel lithium nickel manganese oxide material, in which an XRD pattern of the spinel lithium nickel manganese oxide material satisfies: 0
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25.发明公开公开(公告)号：US20240186491A1
公开(公告)日：2024-06-06
申请号：US18424845
申请日：2024-01-28
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Chengdu Liang , Yongchao Liu , Na Liu , Yingjie Guan , Qisen Huang , Wei Fu
CPC classification number: H01M4/366 , C01G53/50 , H01M4/131 , H01M4/505 , H01M4/525 , H01M4/5825 , C01P2004/51
Abstract: The present invention relates to an electrode active material, a preparation method thereof, an electrode, a battery, and an apparatus. The electrode active material includes: a core and a coating layer, where the core includes a ternary material, the coating layer coats the core, the coating layer includes a reaction product of a sulfur-containing compound and a lithium-containing compound, and the reaction product includes element Li, element S, and element O.
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Patent Agency Ranking
公开(公告)号：US11944954B2
公开(公告)日：2024-04-02
申请号：US17937457
申请日：2022-10-02
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Jiarui Tian , Yongsheng Guo , Cong Cheng , Xinxin Zhang , Na Liu , Chuying Ouyang
IPC: B01J20/22 , B01J20/28 , H01M50/417 , H01M50/446 , H01M50/449
CPC classification number: B01J20/226 , B01J20/28059 , B01J20/28061 , B01J20/2808 , B01J20/28083 , B01J20/28085 , H01M50/417 , H01M50/446 , H01M50/449
Abstract: An organic-inorganic hybrid porous material. The organic-inorganic hybrid porous material contains a doping element A are provided. In some embodiments, the element A is one or more selected from: Li, Na, K, Rb, Cs, Sr, Zn, Mg, Ca, or any combination thereof. An external specific surface area of the organic-inorganic hybrid porous material is 1 to 100 m2/g. A ratio of the external specific surface area to a total specific surface area of the organic-inorganic hybrid porous material is 0.7 to 0.9.
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公开(公告)号：US11855277B2
公开(公告)日：2023-12-26
申请号：US17971500
申请日：2022-10-21
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Bangrun Wang , Na Liu , Chengdu Liang , Yongchao Liu , Xin Sun , Haotian Xie
CPC classification number: H01M4/366 , H01M4/0404 , H01M4/485 , H01M4/505 , H01M4/525 , H01M4/5825 , H01M2004/021 , H01M2004/028
Abstract: This application provides a composite positive-electrode material and a preparation method thereof, a positive-electrode plate, a secondary battery, and a battery module, a battery pack, and an apparatus containing such secondary battery. The composite positive-electrode material includes a core and a coating layer covering at least part of a surface of the core, where the core includes a positive-electrode pre-lithiation material, the positive-electrode pre-lithiation material includes a lithium-rich metal oxide, and the coating layer includes a positive-electrode active material.
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28.发明公开公开(公告)号：US20230307790A1
公开(公告)日：2023-09-28
申请号：US18318744
申请日：2023-05-17
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Haiyi Hong , Jianrui Yang , Yuanyuan Lan , Cong Cheng , Na Liu , Haizu Jin
IPC: H01M50/446 , H01M50/494 , H01M50/403 , H01M50/426
CPC classification number: H01M50/446 , H01M50/494 , H01M50/403 , H01M50/426 , H01M2220/20
Abstract: A separator, comprising a substrate and a coating provided on at least one surface of the substrate are provided. In some embodiments, the coating comprises inorganic particles and organic particles, the organic particles comprise first organic particles and second organic particles both embedded in the inorganic particles and forming protrusions on the surface of the coating; the first organic particles are secondary particles, and the number of the first organic particles in the coating is denoted as A; the second organic particles are primary particles and the number of the second organic particles in the coating is denoted as B; with the separator satisfying: 0.05≤A/B
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29.发明公开公开(公告)号：US20230285933A1
公开(公告)日：2023-09-14
申请号：US17937457
申请日：2022-10-02
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Jiarui Tian , Yongsheng Guo , Cong Cheng , Xinxin Zhang , Na Liu , Chuying Ouyang
IPC: B01J20/22 , H01M50/449 , H01M50/446 , H01M50/417 , B01J20/28
CPC classification number: B01J20/226 , B01J20/28059 , B01J20/28061 , B01J20/2808 , B01J20/28083 , B01J20/28085 , H01M50/417 , H01M50/446 , H01M50/449
Abstract: An organic-inorganic hybrid porous material. The organic-inorganic hybrid porous material contains a doping element A are provided. In some emodiments, the element A is one or more selected from: Li, Na, K, Rb, Cs, Sr, Zn, Mg, Ca, or any combination thereof. An external specific surface area of the organic-inorganic hybrid porous material is 1 to 100 m2/g. A ratio of the external specific surface area to a total specific surface area of the organic-inorganic hybrid porous material is 0.7 to 0.9.
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30.发明公开公开(公告)号：US20230223523A1
公开(公告)日：2023-07-13
申请号：US18187718
申请日：2023-03-22
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Xue Leng , Rui Du , Na Liu , Yongchao Liu , Huan Ni
CPC classification number: H01M4/366 , H01M4/525 , H01M4/505 , H01M4/131 , H01M2004/028
Abstract: A positive electrode plate for secondary battery, a secondary battery, a battery module, a battery pack, and an apparatus are provided. Some embodiments provide a positive electrode plate for secondary battery, where the positive electrode plate includes a positive electrode current collector and a positive electrode active substance layer located on a surface of the positive electrode current collector, the positive electrode active substance layer includes a positive electrode active substance, the positive electrode active substance contains a first lithium-nickel transition metal oxide and a second lithium-nickel transition metal oxide, the first lithium-nickel transition metal oxide contains a first matrix and a first coating layer located on a surface of the first matrix, the first matrix is secondary particles, and the second lithium-nickel transition metal oxide is single crystal particles or particles with quasi-single crystal morphology.
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