NON−AQUEOUS ELECTROLYTE AND SECONDARY CELL USING THE SAME

摘要

An electrolyte for a secondary cell having a non−aqueous solvent and a lithium salt dissolved therein, characterized in that the non−aqueous solvent comprises a lactone compound as a primary component, and the electrolyte contains a hydroxy carboxylic acid in an amount of 1 mmol/kg or less; and a secondary cell using the electrolyte. The electrolyte and the cell is excellent in the retention of capacity at a high temperature, cycle characteristics, various cell characteristics in a wide range of temperature, and safety such as ignition characteristics.