Sodium ion battery and electric device

Abstract

The present application relates to the technical field of sodium ion batteries, and in particular to a sodium ion battery and an electric device. The sodium ion battery comprises an electrolyte, the electrolyte comprises a first additive, and the first additive comprises a compound represented by formula 1. In the sodium ion battery, adding a fluorophosphate compound represented by formula 1 into the electrolyte can reduce the consumption of irreversible sodium ions in the sodium ion battery, thereby improving the initial coulombic efficiency of the battery, enhancing the high and low temperature performance and cycle stability of the sodium ion battery, and reducing the internal resistance of the sodium ion battery.

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