Monofluoro-substituted ether solvent, electrolyte containing monofluoro-substituted ether solvent and application of monofluoro-substituted ether solvent

The invention discloses a monofluoro-substituted ether solvent, an electrolyte containing the monofluoro-substituted ether solvent and application of the monofluoro-substituted ether solvent and the electrolyte, the monofluoro-substituted ether solvent is a monofluoro-substituted ether compound with the general formula shown in the formula I, and R1 and R2 are independently selected from methyl or phenyl respectively. The monofluoro-substituted ether solvent is novel in structure, methyl or phenyl is connected in the structure, and carbon between two oxygen in the structure has fewer active sites by connecting the methyl or the phenyl, so that higher stability is obtained; the electrolyte formed by compounding the lithium salt with the conventional lithium salt in the field has relatively low viscosity, and has relatively high interface stability on a metal lithium negative electrode; meanwhile, under the low-temperature condition, the ether electrolyte has lower desolvation energy, so that the low-temperatur