SECONDARY BATTERY AND ELECTRONIC APPARATUS

    公开(公告)号:US20240405218A1

    公开(公告)日:2024-12-05

    申请号:US18679419

    申请日:2024-05-30

    Abstract: A secondary battery includes: a negative electrode including a negative electrode active material layer. The negative electrode active material layer includes a first active material layer having a first active material and a second active material layer having a second active material. A first button battery using lithium plate as a negative electrode and the first active material as a positive active material of a positive electrode experiences a charge and discharge test; a terminal potential slope of a lithium deintercalation curve of the first button battery is Sa; a second button battery using lithium plate as a negative electrode and the second active material as a positive active material of a positive electrode experiences a charge and discharge test; a terminal potential slope of a lithium deintercalation curve of the second button battery is Sb; Sa

    SECONDARY BATTERY AND ELECTRONIC APPARATUS

    公开(公告)号:US20240405204A1

    公开(公告)日:2024-12-05

    申请号:US18679434

    申请日:2024-05-30

    Abstract: A secondary battery according to this application includes a negative electrode. The negative electrode includes a current collector and a negative electrode active material layer disposed on a surface of the current collector. The negative electrode active material layer includes a first negative electrode active material layer and a second negative electrode active material layer. The first negative electrode active material layer is disposed between the current collector and the second negative electrode active material layer. The first negative electrode active material layer includes a first negative electrode active material, and the first negative electrode active material has a maximum rebound rate Ra; and the second negative electrode active material layer includes a second negative electrode active material, and the second negative electrode active material has a maximum rebound rate Rb; where 5%≤Ra≤13%, 10%≤Rb≤17%, and Ra

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