SODIUM-ION BATTERY AND POWER CONSUMPTION DEVICE

A sodium-ion battery, a preparation method for the sodium-ion battery, and a power consumption device including the sodium-ion battery are disclosed. The sodium-ion battery includes a positive electrode, a negative electrode, an electrolyte, and a separator. The negative electrode includes a carbon material, and a specific surface area of the carbon material is a in a unit of m/g. The electrolyte includes an electrolyte salt, an organic solvent, and an additive, the additive includes a sodium salt additive and an organic additive, a mass percentage of the sodium salt additive in the electrolyte is e in a unit of %, a numerical ratio of e to a satisfies: 0.01≤e/a≤3.5, a mass percentage of the organic additive in the electrolyte is fin a unit of %, and a numerical ratio of f to a satisfies: 0.05≤f/a≤10.