New ionically conductive material with improved conductivity and stability

摘要

Sulfamides or mixtures thereof having the formula        R1 R2 NSO2 N R3 R4wherein one to three R substituents are methyl groups, the remainder being ethyl groups, or one R is a methoxyethyl, the remaining R being methyl or ethyl groups. They are useful as electrolytic composition with outstanding conductivity and aprotic solvents. An electrolyte comprising them is highly useful in a lithium battery, a supercapacity type device, an electrochomic device or as a component of a solvent.