NEGATIVE ELECTRODE PLATE AND SECONDARY BATTERY

    公开(公告)号:US20210111410A1

    公开(公告)日:2021-04-15

    申请号:US17132506

    申请日:2020-12-23

    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.

    NEGATIVE ELECTRODE, SECONDARY BATTERY AND DEVICE COMPRISING SAME

    公开(公告)号:US20210143414A1

    公开(公告)日:2021-05-13

    申请号:US17150096

    申请日:2021-01-15

    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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