Sodium secondary battery

摘要

A sodium secondary battery includes a positive electrode, a negative electrode, and a non-aqueous electrolytic solution including a non-aqueous solvent. The non-aqueous solvent includes a fluoro group-containing chain carboxylic acid ester represented by General Formula (1):;;wherein R1 is an aromatic group, an unsaturated aliphatic group or a saturated aliphatic group; R2, R3 and R4 are each a hydrogen atom, an aromatic group, an unsaturated aliphatic group or a saturated aliphatic group; and at least one of R1, R2, R3 and R4 includes one or more fluoro groups.

主权项

1. A sodium secondary battery comprising:
a positive electrode including a positive electrode active material allowing a sodium ion to be inserted therein and released therefrom; a negative electrode including a negative electrode active material allowing a sodium ion to be inserted therein and released therefrom; and a non-aqueous electrolytic solution including a non-aqueous solvent and a sodium salt dissolved in the non-aqueous solvent, the non-aqueous solvent including a fluoro group-containing chain carboxylic acid ester represented by General Formula (1): wherein R1 is an aromatic group, an unsaturated aliphatic group or a saturated aliphatic group; R2, R3 and R4 are each a hydrogen atom, an aromatic group, an unsaturated aliphatic group or a saturated aliphatic group; and at least one of R1, R2, R3 and R4 includes one or more fluoro groups.