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1.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：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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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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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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公开(公告)号：US20240178385A1
公开(公告)日：2024-05-30
申请号：US18435387
申请日：2024-02-07
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Rui Du , Yongchao Liu , Sihui Wang , Deyu Zhao , Na Liu
IPC: H01M4/525 , H01M4/02 , H01M4/485 , H01M4/505 , H01M10/0525
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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Patent Agency Ranking
公开(公告)号：US11699789B2
公开(公告)日：2023-07-11
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
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 , H01M2004/028
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：US11569510B2
公开(公告)日：2023-01-31
申请号：US17518744
申请日：2021-11-04
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Rui Du , Sihui Wang , Yongchao Liu , Chi Luo , Deyu Zhao , Na Liu
Abstract: This disclosure relates to the field of electrochemistry, and in particular, to a positive electrode material. The positive electrode material of this disclosure includes a substrate, with a formula of the substrate being LixNiyCozMkMepOrAm, where 0.95≤x≤1.05, 0.50≤y≤0.95, 0≤z≤0.2, 0≤k≤0.4, 0≤p≤0.05, 1≤r≤2, 0≤m≤2, m+r≤2; a coating layer is disposed on the subs hate, where the coating layer includes a coating element; and absorbance of nickel leachate per unit mass of the positive electrode material w≤0.7.
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公开(公告)号：US11121367B2
公开(公告)日：2021-09-14
申请号：US15577290
申请日：2017-08-24
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Rui Du , Na Liu , Yongchao Liu , Sihui Wang , Zhongling Xu , Chao Yang
IPC: H01M4/505 , H01M4/525 , H01M4/04 , H01M4/58 , H01M4/485 , H01M4/36 , H01M4/139 , H01M10/052 , H01M10/0525 , H01M4/50 , H01M4/62 , H01M4/02
Abstract: The disclosure provides a modified positive electrode active material, a preparation method thereof, and an electrochemical energy storage device. The modified positive electrode active material comprises positive electrode active material substrate; first oxide layer, coated on the surface of the positive electrode active material substrate and selected from one or more of oxides of element M being selected from the group of one or more of Li, Al, Zr, Mg, Ti, Y, Si, Ca, Cr, Fe, Zn, Nb, Sn, Ba, and Cd; and second oxide layer having a continuous layered structure, coated on the surface of the first oxide layer and selected from one or more of oxides of element M′ being selected from one or more of Li, B, P, As, Pb, V, Mo, and Sn. High temperature storage performance and cycling performance of electrochemical energy storage device are improved by the modified positive electrode active material.
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公开(公告)号：US11121362B2
公开(公告)日：2021-09-14
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 , H01M4/505 , H01M4/525 , C30B29/22 , H01M4/02
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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10.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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