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公开(公告)号：US11955633B2
公开(公告)日：2024-04-09
申请号：US17517958
申请日：2021-11-03
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO. LIMITED
Inventor： Chongheng Shen , Rui Du , Yongchao Liu , Deyu Zhao , Na Liu
CPC classification number: H01M4/525 , H01M4/366 , H01M4/505 , H01M2004/028
Abstract: This disclosure relates to the electrochemical field, and in particular, to a positive electrode material and a preparation method and usage thereof. The positive electrode material of this disclosure includes a substrate, where a general formula of the substrate is LixNiyCozMkMepOrAm, where 0.95≤x≤1.05, 0.5≤y≤1, 0≤z≤1, 0≤k≤1, 0≤p≤0.1, 1≤r≤5.2, 0≤m≤2, m+r≤2, M is selected from one or more of Mn and Al, Me is selected from one or more of Zr, Zn, Cu, Cr, Mg, Fe, V, Ti, Sr, Sb, Y, W, and Nb, and A is selected from one or more of N, F, S, and Cl; and an oxygen defect level of the positive electrode material satisfies at least one of condition (1) or condition (2): (1) 1.77≤OD1≤1.90; or (2) 0.69≤OD2≤0.74.
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2.发明授权公开(公告)号：US11949099B2
公开(公告)日：2024-04-02
申请号：US18108515
申请日：2023-02-10
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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公开(公告)号：US11942636B2
公开(公告)日：2024-03-26
申请号：US17135519
申请日：2020-12-28
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Rui Du , Yongchao Liu , Sihui Wang , Deyu Zhao , Na Liu
IPC: H01M4/525 , H01M4/485 , H01M4/505 , H01M10/0525 , H01M4/02
CPC classification number: H01M4/525 , H01M4/485 , H01M4/505 , H01M10/0525 , H01M2004/021 , H01M2004/028
Abstract: The present application relates to the electrochemical field, and in particular, to a positive electrode material, and an electrochemical energy storage apparatus having thereof. The present application provides a positive electrode material, including a substrate. The substrate includes secondary particles containing primary particles. A surface of the substrate is coated with an oxide coating layer. The oxide coating layer comprises a coating element, and the coating element is selected from one or more of Al, Ba, Zn, Ti, Zr, Mg, W, Y, Si, Sn, B, Co, or P. The electrochemical energy storage apparatus comprises the foregoing positive electrode material.
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4.发明公开公开(公告)号：US20240055579A1
公开(公告)日：2024-02-15
申请号：US18490759
申请日：2023-10-20
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Chongheng Shen , Shuxing Huan , Dongsheng Luo , Bangrun Wang , Qi Wu , Qiang Chen , Na Liu
IPC: H01M4/134 , H01M10/0525
CPC classification number: H01M4/134 , H01M10/0525 , H01M2004/028
Abstract: Provided are a lithium-ion battery positive electrode plate, comprising a positive electrode film layer disposed on at least one surface of the positive electrode current collector, wherein the positive electrode film layer comprises a positive electrode active material mixture composed of the following materials: polycrystalline particles of a first positive electrode active material with a particle size of 11.0-20.0 μm; polycrystalline particles of a second positive electrode active material with a particle size of 6.0-10.5 μm; and monocrystalline particles of a third positive electrode active material with a particle size of 1.1-5.2 μm; wherein the number of the polycrystalline particles of the first positive electrode active material is a, the number of the polycrystalline particles of the second positive electrode active material is b, the number of the monocrystalline particles of the third positive electrode active material is c, and (a+b):c is in the range of 5.7:4.3 to 7.7:2.3.
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公开(公告)号：US11881582B2
公开(公告)日：2024-01-23
申请号：US18323423
申请日：2023-05-25
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Dong Zhao , Qi Wu , Qiang Chen , Jingpeng Fan , Jing Wang , Na Liu
CPC classification number: H01M4/366 , H01M4/0471 , H01M4/587 , H01M4/5825 , H01M2004/021 , H01M2004/028
Abstract: A positive electrode active material and a preparation method thereof, a secondary battery, and an electric apparatus are provided. The positive electrode active material in the present invention includes: a core, where the core is a lithium-containing phosphate; a first coating layer disposed on at least part of surface of the core, where the first coating layer is a carbon coating layer co-doped with titanium and nitrogen; and a second coating layer disposed on at least part of surface of the first coating layer, where the second coating layer includes Li1+xMxTi2−x(PO4)3, where M is at least one element selected from aluminum, lanthanum, indium, zirconium, gallium, and scandium, and 0.2≤x≤0.8. With use of the positive electrode active material of the present invention, a high discharge capacity, excellent rate performance, and excellent cycling performance can be achieved.
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Patent Agency Ranking
6.发明公开公开(公告)号：US20230322579A1
公开(公告)日：2023-10-12
申请号：US18326025
申请日：2023-05-31
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Qiang Chen , Qi Wu , Jingpeng Fan , Tao Huang , Na Liu
IPC: C01G53/00 , H01M10/0525 , C01G51/00 , H01M50/204
CPC classification number: C01G53/006 , C01G51/006 , H01M10/0525 , H01M50/204 , C01P2004/61 , C01P2006/11 , C01P2006/12 , C01P2006/40
Abstract: A positive electrode material, including a core and a shell layer are provided. In some embodiments, a molecular formula of the core is Li1+aNixCoyMn1-x-yM1zO2, 0.8≤x
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7.发明公开公开(公告)号：US20230282824A1
公开(公告)日：2023-09-07
申请号：US18186952
申请日：2023-03-21
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Haotian Xie , Peipei Chen , Xin Sun , Bangrun Wang , Jiantao Huang , Xingbu Chen , Xiao Chen , Na Liu , Chengdu Liang
IPC: H01M4/525 , H01M10/0525 , H01M4/485 , H01M4/505 , H01M10/0568 , H01M4/58 , H01M4/04 , H01M50/207
CPC classification number: H01M4/525 , H01M10/0525 , H01M4/485 , H01M4/505 , H01M10/0568 , H01M4/5825 , H01M4/0404 , H01M50/207 , H01M2004/028
Abstract: A lithium ion secondary battery and a preparation method therefor, a battery module, a battery pack, and a device are provided. In some embodiments, the lithium ion secondary battery comprises a positive electrode plate, a negative electrode plate and an electrolyte, wherein the positive electrode plate comprises a positive electrode active material and a positive electrode lithium-supplementing material comprising a lithium-rich metal oxide, and the lithium-rich metal oxide comprises one or more elements of Ni, Co, Fe, Mn, and Cu; the electrolyte comprises an electrolyte lithium salt and a solvent, and has a percentage ε of the total mass of a fluorine element in the anions of the electrolyte lithium salt relative to the total mass of the electrolyte of
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公开(公告)号：US20230016626A1
公开(公告)日：2023-01-19
申请号：US17942031
申请日：2022-09-09
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Cong CHENG , Haiyi Hong , Yuanyuan Lan , Jianrui Yang , Na Liu , Haizu Jin
IPC: H01M50/446 , H01M50/403 , H01M50/494 , H01M50/491
Abstract: The present application relates to a separator in the electrochemical field and a preparation method therefor, and to a secondary battery comprising the separator, a device comprising the secondary battery. The separator of the present application is prepared by a simple process and has excellent heat resistance performance. Moreover, the secondary batteries and devices comprising the separator of the present application have good safety performance and cycling performance.
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9.发明申请公开(公告)号：US20220359951A1
公开(公告)日：2022-11-10
申请号：US17863299
申请日：2022-07-12
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 , H01M50/491
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 an electrical device containing such separator, preparation methods thereof, and an organic-inorganic hybrid composite compound for improving performance of a separator.
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公开(公告)号：US10164249B2
公开(公告)日：2018-12-25
申请号：US14831871
申请日：2015-08-20
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Xiangpeng Fang , Chengren Wu , Na Liu , Xuguang Gao
Abstract: The present invention provides a positive active material for use in a secondary lithium battery, a method for preparing the positive active material and a secondary lithium battery containing the positive active material. The positive active material includes a core of lithium transition metal oxide represented by Formula LixMyN1-yO2-αAβ and a coating layer of lithium transition metal silicate represented by Formula x′Li2O.y′N′Oa.SiO2-λBζwhich in-situ formed on the core, wherein 0.8≤x≤1.3, 0.6≤y≤1.0, 0.01≤x′≤2.1, 0.2≤y′≤1.5, 0.1≤a≤3.0, 0≤α≤0.2, 0≤β≤0.4, 0≤λ≤0.5, 0≤ζ≤0.5. The positive active material according to the present invention has high capacity, desirable cycling performance and safety performance, as well as desirable thermal stability.
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