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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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2.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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4.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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Patent Agency Ranking
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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公开(公告)号：US20230282821A1
公开(公告)日：2023-09-07
申请号：US18315511
申请日：2023-05-11
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Zhenguo Zhang , Jingpeng Fan , Xingkai Hu , Sihui Wang , Qiang Chen , Na Liu
CPC classification number: H01M4/505 , H01M4/525 , H01M4/131 , C01G53/54 , H01M2004/021
Abstract: A spinel-type nickel-manganese-lithium-containing composite oxide, a preparation method thereof, and a secondary battery and an electric apparatus containing the same are provided. A body material of the spinel-type nickel-manganese-lithium-containing composite oxide is represented by a general formula LixNiyMnzMmO4Qq, and both element P and one or more elements selected from elements Nb, W, and Sb are doped in the body material, where based on mass of the spinel-type nickel-manganese-lithium-containing composite oxide, doping content k of the element P satisfies 0.48 wt %≤k≤3.05 wt %, doping content g of the one or more elements selected from the elements Nb, W, and Sb satisfies 0.05 wt %≤g≤0.31 wt %, and 2≤k/g≤20. The secondary battery provided in this application has good high-temperature storage performance and high-temperature cycling performance.
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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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