Nonaqueous Electrolyte Solution And Electrochemical Element Using Same

ABSTRACT Disclosed is a nonaqeous electrolyte solution obtained by dissolving an electrolyte salt in a nonaqueous solvent which is characterized in that a sulfonate compound having a specific structure is contained in an mount of 0.01-10% by mass in the nonaqeous electrolyte solution.Also disclosed is an electrochemical element which comprises the nonaqeous electrolyte solution The nonaqeous electrolyte solution has an excellent effect of improvig storage characteristic of a primary battery cycle characteristics of a secondary battery in cases when the secondary battery is used at high temperature and low temperature characteristics of a secondary battery after high-temperature cycles.