NONAQUEOUS ELECTROLYTE SOLUTION AND ELECTROCHEMICAL ELEMENT USING SAME

摘要

Disclosed is a nonaqueous 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 amount of 0.01-10% by mass in the nonaqueous electrolyte solution. Also disclosed is an electrochemical element which comprises the nonaqueous electrolyte solution. The nonaqueous electrolyte solution has an excellent effect of improving storage characteristics 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.