SECONDARY BATTERY AND METHOD FOR MANUFACTURING THE SAME

    公开(公告)号:US20240379947A1

    公开(公告)日:2024-11-14

    申请号:US18690309

    申请日:2022-09-05

    Abstract: An object of an embodiment of the present invention is to provide a negative electrode with high capacity. Another embodiment of the present invention is to provide a novel secondary battery. A surface treatment layer, specifically a metal film typified by a titanium film, is formed on the surface of a SiOx particle. Providing the surface treatment layer can suppress rapid volume expansion of SiOx, thereby reducing a change in volume of the negative electrode active material layer or reducing formation of a space between the negative electrode active materials. Furthermore, providing such a metal film on the particle surface can improve the conductivity. Moreover, a change in quality due to a reaction between the SiOx particle and the electrolyte solution can be reduced owing to the presence of the surface treatment layer.

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