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21.发明公开公开(公告)号：US20230223521A1
公开(公告)日：2023-07-13
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 , H01M4/5825 , H01M4/525 , H01M4/505 , H01M4/131 , C01G53/50 , 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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22.发明申请公开(公告)号：US20230015490A1
公开(公告)日：2023-01-19
申请号：US17942029
申请日：2022-09-09
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Cong CHENG , Haiyi HONG , Jianrui YANG , Yuanyuan LAN , Na LIU , Haizu JIN
IPC: H01M50/446 , H01M50/449 , H01M50/403 , H01M50/494
Abstract: The present application relates to a separator, comprising a substrate and a coating formed on at least one surface of the substrate, wherein the coating comprises inorganic particles and first organic particles embedded in the inorganic particles and forming protrusions on the surface of the coating, and the first organic particles have a primary particle morphology and a number-average particle size of ≥2 μm. The present application also relates to a secondary battery comprising the separator, a device comprising the secondary battery and a method for preparing the separator.
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23.发明申请公开(公告)号：US20220393305A1
公开(公告)日：2022-12-08
申请号：US17887301
申请日：2022-08-12
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Yongsheng GUO , Jiarui TIAN , Cong CHENG , Na LIU , Chuying OUYANG , Yuanyuan LAN , Shuojian SU
IPC: H01M50/451 , H01M50/414 , H01M50/431
Abstract: This application provides a separator, an electrical apparatus including the 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：US20220077464A1
公开(公告)日：2022-03-10
申请号：US17418401
申请日：2019-12-27
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Rui DU , Yongchao LIU , Chongheng SHEN , Sihui WANG , Na LIU
IPC: H01M4/525 , H01M4/36 , H01M10/0525 , H01M4/505 , C01G53/00
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：US20210167366A1
公开(公告)日：2021-06-03
申请号：US17123544
申请日：2020-12-16
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Xue LENG , Rui DU , Na LIU , Yongchao LIU , Huan NI
IPC: H01M4/36 , H01M10/0525 , H01M4/1315 , H01M4/525 , H01M4/505 , C30B29/22
Abstract: The present application provides a positive electrode sheet for a secondary battery, the positive electrode sheet includes a positive electrode current collector and a positive electrode active material layer on a surface of the positive electrode current collector, the positive electrode active material layer includes a positive electrode active material, the positive electrode active material includes a first lithium nickel transition metal oxide and a second lithium nickel transition metal oxide, the first lithium nickel transition metal oxide includes a first substrate and a first coating layer on a surface of the first substrate, the first substrate is secondary particles, and the second lithium nickel transition metal oxide is a single crystal or single-crystal-like morphological particles.
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Patent Agency Ranking
26.发明申请公开(公告)号：US20180323436A1
公开(公告)日：2018-11-08
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
CPC classification number: H01M4/628 , B01J13/08 , H01M4/0404 , H01M4/0471 , H01M4/131 , H01M4/1391 , H01M4/366 , H01M4/505 , H01M4/525 , H01M4/622 , H01M4/624 , H01M10/0525 , H01M2004/028
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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公开(公告)号：US20240204187A1
公开(公告)日：2024-06-20
申请号：US18594726
申请日：2024-03-04
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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28.发明公开公开(公告)号：US20230420751A1
公开(公告)日：2023-12-28
申请号：US18466815
申请日：2023-09-13
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Zhenguo ZHANG , Chang PENG , Sihui WANG , Na LIU , Jingpeng FAN , Dong ZHAO , Zhijie YAO
CPC classification number: H01M10/4235 , H01M4/366 , H01M4/525 , H01M4/505 , H01M4/5825 , H01M10/0568 , H01M2004/021
Abstract: A secondary battery includes a positive electrode sheet having a positive electrode active material and a non-aqueous electrolyte. The positive electrode active material includes a central core material and a modification layer disposed on a surface of the central core material. The modification layer including an orthophosphate with a molecular formula Aa+x[PO4]3−y, where A denotes one or more of Li, Na, K, Rb, Cs, Mg, Ca, Ba, Ni, Fe, Co, Ti, Al, Cr, V, Nb, and W, 1≤a≤6, and ax=3y. The non-aqueous electrolyte includes a fluorinated phosphate with a molecular formula Bb+m[PO1+cF3-c]c−n, where B denotes one or more of Li, Na, K, Rb, Cs, Mg, Ca, and Ba, 1≤b≤2, c denotes 1 or 2, and bm=cn.
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29.发明公开公开(公告)号：US20230378463A1
公开(公告)日：2023-11-23
申请号：US18230412
申请日：2023-08-04
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Jiazheng WANG , Na LIU , Chengdu LIANG
CPC classification number: H01M4/583 , H01M4/0471 , H01M2004/027
Abstract: A negative-electrode active material includes a carbon matrix, boron, and iron distributed in an interior of the carbon matrix.
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公开(公告)号：US20230261491A1
公开(公告)日：2023-08-17
申请号：US18295931
申请日：2023-04-05
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Haotian XIE , Xingbu CHEN , Xin SUN , Bangrun Wang , Xiao CHEN , Na LIU , Chengdu LIANG
IPC: H02J7/00 , H01M10/44 , H01M10/0525 , H01M4/62 , C01G53/00
CPC classification number: H02J7/0069 , H01M10/446 , H01M10/0525 , H01M4/628 , C01G53/42 , H02J7/005
Abstract: A method for recovering activity of a battery includes obtaining a battery state-of-health value of the battery during a charging process, applying an activation voltage to the battery in response to the battery state-of-health value being less than or equal to a first preset threshold such that lithium ions at a lithium supplement agent of the battery are released to an electrolyte solution, and stopping application of the activation voltage and continuing a normal charge-discharge cycle in response to the battery state-of-health value increasing to be greater than or equal to a second preset threshold. The activation voltage is higher than a normal charging voltage of the battery.
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