ELECTRIC DOUBLE LAYER CAPACITOR

摘要

An electric double-layer capacitor comprising an electrode containing an activated carbon, an electrolytic solution containing an electrolyte and a separator, wherein the electrolyte is an imidazolium salt represented by the following formula (1)
(wherein R and R' each independently represent alkyl group having 1 to 6 carbon atoms, R 1 to R 3 each independently represent hydrogen atom or alkyl group having 1 to 6 carbon atoms and X - represents a counter ion), and
the activated carbon is produced by carbonizing an organic aerogel obtained by polymerizing a phenolic compound having at least one hydroxyl group in its molecule with an aldehyde compound in an aqueous solvent in the presence of a basic catalyst.