Silicon-based electrode material, negative electrode sheet, secondary battery, and electronic device

The invention provides a silicon-based electrode material, a negative plate, a secondary battery and electronic equipment, the silicon-based electrode material comprises a silicon-containing material and beta-eucryptite, and chemical bonds exist between the silicon-containing material and the beta-eucryptite. According to the silicon-based electrode material, a silicon-containing material and beta-eucryptite are compounded, so that the expansion effect of the silicon-based electrode material is reduced, the silicon-based electrode material is applied to a secondary battery, the cycle performance of the battery can be improved, the service life of the battery can be prolonged, and the preparation of the secondary battery with high energy density is facilitated. 本申请提供了一种硅基电极材料、负极片、二次电池和电子设备，该硅基电极材料包括含硅材料和β-锂霞石，含硅材料和β-锂霞石之间存在化学键。该硅基电极材料通过将含硅材料与β-锂霞石复合从而降低硅基电极材料的膨胀效应，将该硅基电极材料应用在二次电池可以改善电池的循环性能并延长电池的使用寿命，有利于制备高能量密度的二次电池。