Non-aqueous electrolytes for batteries

Abstract

A non-aqueous electrolyte includes a Group 1 salt and a solvent mixture configured to dissolve the Group 1 salt and including a sulfone and a partially fluorinated sulfonamide. The sulfone may be present at about 20 weight percent or greater, based on a total weight of the sulfone and the partially fluorinated sulfonamide. The non-aqueous electrolyte may exhibit about a 1.1- to about a 3.1-times greater ionic conductivity value, as compared to a corresponding non-aqueous electrolyte excluding the sulfone. The Group 1 salt may be a lithium salt. The sulfone may be ethylmethylsulfone, sulfolane, thietane-1,1-dioxide, 1,3-oxathiolane-3,3-dioxide, and/or 1,4-oxathiane-4,4-dioxide. The partially fluorinated sulfonamide may be N,N-dimethylfluorosulfonamide,N,N-dimethyl-1,1,1-trifluoromethanesulfonamide, and/or N-butyl-N-methyl-1,1,1-trifluoromethanesulfonamide. The solvent mixture may include another solvent, e.g., a cyclic saturated sultone, a carbonate, an ether, a polyether, a nitrile, and/or an amide, at about 10 weight percent or greater, based on a total weight of the solvent mixture.

Dependencies are inferred from the claim text.