| abstract |
To provide a non-aqueous electrolyte for a secondary battery capable of maintaining a small internal resistance and a high electric capacity during long-term use, and a non-aqueous electrolyte secondary battery using the non-aqueous electrolyte. In a non-aqueous electrolyte for a secondary battery in which an electrolyte salt is dissolved in an organic solvent, the following general formula (1) (In the formula, R 1 represents a secondary linear alkyl group having 3 to 8 carbon atoms, a branched alkyl group having 4 to 8 carbon atoms, or an alkyl chloride group having 1 to 8 carbon atoms, and R 2 represents 1 to 8 carbon atoms. Or an alkyl group having 1 to 8 carbon atoms, R 3 and R 4 each independently represents a hydrogen atom or an alkyl group having 1 to 8 carbon atoms, and n represents a number of 1 or 2. ) A nonaqueous electrolytic solution for a secondary battery, comprising a dicarbonate compound represented by the formula: [Selection figure] None |