Patent ID: 8767376

Claim:
An electrolytic solution for an electric double layer capacitor comprising a solvent (I) for dissolving an electrolyte salt and an electrolyte salt (II), wherein the solvent (I) for dissolving an electrolyte salt comprises a sulfolane compound and a fluorine-containing chain ether and, wherein the fluorine-containing chain ether is represented by the formula: Rf 1 —O—Rf 2 , wherein Rf 1 is a fluoroalkyl group having 1 to 10 carbon atoms, and Rf 2 is an alkyl group having 1 to 4 carbon atoms which may contain fluorine, and wherein the electrolyte salt (II) is a spiro-bipyridinium salt, a triethylmethylammonium salt, or a tetraethylammonium salt.