| abstract |
An electrolytic solution for an electric double layer capacitor and an electric double layer capacitor having a high capacity retention rate and excellent durability even when charged by applying a high voltage of about 3 V are provided. An ionic liquid and the following formula (1) (Wherein R 1 and R 2 are the same or different and each represents a linear or branched alkyl group or a fluorinated alkyl group having 1 to 4 carbon atoms, and R 3 to R 10 are the same or different and represent hydrogen An atom, a fluorine atom, a methyl group or a methyl fluoride group, wherein m and n are each an integer of 0 or more, and m + n is 1 to 6. Electrolyte for electric double layer capacitor. [Selection figure] None |