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公开(公告)号:US20210111410A1
公开(公告)日:2021-04-15
申请号:US17132506
申请日:2020-12-23
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor: Yaping HUANG , Mingkui GUO , Yaohui WANG , Yongshou LIN , Fenggang ZHAO
IPC: H01M4/66 , H01M4/36 , H01M4/133 , H01M4/134 , H01M10/0525
Abstract: The present application relates to the electrochemical field, and in particular, to a negative electrode plate and a secondary battery including the electrode plate. The present application provides a negative electrode plate. The negative electrode plate includes a negative electrode current collector, a first negative electrode active substance layer disposed on at least one surface of the negative electrode current collector, and a second negative electrode active substance layer disposed on the first negative electrode active substance layer. The first negative electrode active substance layer includes a first negative electrode active substance, and the second negative electrode active substance layer includes a second negative electrode active substance. The first negative electrode active substance satisfies 1 GPa≤Young's modulus≤10 GPa, and the second negative electrode active substance satisfies 11 GPa≤Young's modulus≤30 GPa.
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公开(公告)号:US20210083280A1
公开(公告)日:2021-03-18
申请号:US17044289
申请日:2019-10-15
Applicant: Contemporary Amperex Technology Co., Limited
Inventor: Mingkui GUO , Yaohui WANG , Yaping HUANG
IPC: H01M4/505 , H01M4/525 , H01M10/0525 , H01M4/58 , H01M4/04 , H01M4/36 , H01M4/1391 , H01M4/131
Abstract: This application provides a positive-electrode plate, including a current collector, and a first active substance layer and a second active substance layer that are sequentially disposed on a surface of the current collector. The first active substance layer includes a first positive-electrode active material, and the first positive-electrode active material includes at least one of a compound represented by Formula (I) Li1+x1Mna1M1-a1O2-y1Ay1 or a compound represented by Formula (II) Li1+x2Mna2N2-a2O4-y2By2. The second active substance layer includes a second positive-electrode active material having a pH value of from 10˜12. In this application, the active substance layer that includes high-pH positive-electrode active material is disposed outside the active substance layer that includes a lithium manganese-based positive-electrode active material, so as to make a layered electrode plate.
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公开(公告)号:US20230170474A1
公开(公告)日:2023-06-01
申请号:US18103531
申请日:2023-01-31
Applicant: Contemporary Amperex Technology Co., Limited
Inventor: Mingkui GUO , Tiansheng WANG
IPC: H01M4/36 , H01M4/133 , H01M4/587 , H01M10/0525
CPC classification number: H01M4/366 , H01M4/133 , H01M4/587 , H01M10/0525 , H01M2004/021
Abstract: The present application discloses a negative electrode, a secondary battery and a device comprising the same. The negative electrode includes: a current collector; a first active material layer close to the current collector, the first active material layer including a first active material; and a second active material layer disposed on a surface of the first active material layer away from the current collector, the second active material layer including a second active material; wherein the first active material and the second active material are independently oval-like particles with through holes and/or blind holes, and the first active material has an average pore size greater than that of the second active material.
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公开(公告)号:US20210143414A1
公开(公告)日:2021-05-13
申请号:US17150096
申请日:2021-01-15
Applicant: Contemporary Amperex Technology Co., Limited
Inventor: Mingkui GUO , Tiansheng WANG
IPC: H01M4/36 , H01M4/133 , H01M4/587 , H01M10/0525
Abstract: The present application discloses a negative electrode, a secondary battery and a device comprising the same. The negative electrode includes: a current collector; a first active material layer close to the current collector, the first active material layer including a first active material; and a second active material layer disposed on a surface of the first active material layer away from the current collector, the second active material layer including a second active material; wherein the first active material and the second active material are independently oval-like particles with through holes and/or blind holes, and the first active material has an average pore size greater than that of the second active material.
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