Lithium-ion battery

A lithium-ion battery, wherein the lithium-ion battery comprises a positive electrode plate, a negative electrode plate, a separator and an electrolyte;

• the electrolyte comprises an organic solvent, an additive and a lithium salt, the additive comprises fluoroethylene carbonate;
• the fluoroethylene carbonate accounts for 9 wt % to 20 wt % of a total mass of the electrolyte;
• the additive further comprises at least one of succinonitrile, adiponitrile, glycerol trinitrile, 1,3,6-hexanetricarbonitrile, and 1,2-bis(cyanoethoxy) ethane, and a content thereof accounts for 1 wt % to 5 wt % of a total mass of the electrolyte;
• and
• the negative electrode plate comprises a negative electrode active material layer, the negative electrode active material layer comprises a negative electrode active material, and the negative electrode active material comprises a silicon-carbon negative electrode material comprising nano-silicon and/or SiOx(0.8≤x≤1.3) and graphite;
• one or more of the nano-silicon and SiOx account for 1 wt % to 55 wt % of a total mass of the silicon-carbon negative electrode material.