| abstract |
[PROBLEMS] To provide a non-aqueous electrolyte capable of obtaining a battery having a good balance of overall performance in terms of durability, capacity, resistance, output characteristics, and the like, and a non-aqueous electrolyte secondary battery using the non-aqueous electrolyte I will provide a. A non-aqueous electrolyte solution for a non-aqueous electrolyte secondary battery comprising a positive electrode and a negative electrode capable of inserting and extracting metal ions, the non-aqueous electrolyte solution together with an electrolyte and a non-aqueous solvent being represented by the following general formula ( The compound represented by 1) and a compound having two or more isocyanate groups in the molecule, and the compound represented by the general formula (1) is 0.001 mass relative to the total amount of the non-aqueous electrolyte solution. % Non-aqueous electrolyte solution characterized by containing more than 0.5 mass%. (In the formula (1), Cx and Cy are organic groups each having 1 to 20 carbon atoms which may have a substituent. The broken line part between Cx and Cy represents a single bond and a double bond. Z is either an oxygen atom or an optionally substituted nitrogen atom.) [Selection figure] None |