| abstract |
The present invention provides an electric double layer capacitor having high voltage resistance, low degradation, and long-term reliability, particularly having a superior expansion suppression effect. The present invention is an electrolyte solution for an electric double layer capacitor, said solution being characterized by containing an electrolyte-salt-dissolving solvent (I) and an electrolyte salt (II), the electrolyte-salt-dissolving solvent (I) containing a fluorine-containing ether chain and a nitrile compound. |