Battery negative electrode slice and preparation method and application thereof

The invention provides a battery negative electrode slice. The battery negative electrode slice comprises a foil material and negative electrode formula substances; the negative electrode formula substances include a negative electrode active substance, a conductive agent and a binding agent; the binding agent is a compound binding agent; based on 100% of the total mass of the negative electrode formula substances, the compound binding agent is composed of the following components by weight percentage: 0.01-10% of 3-isocyanatopropyltriethylsilane, 0.01-10% of hexamethyldisiloxane, and 0.01-10% of butadiene styrene rubber; and the content of the compound binding agent is less than or equal to 10%.