The electric double layer capacitor accumulates its electric charge at the electric double layer formed at the vicinity of the each electrode, i.e. cathode and anode. That consists of activated carbon with a large specific surface area. We have already reported that the addition of pseudo-capacity by surface adsorption onto the activated carbon by the hydroquinone or copper picolinate complex. In this report the enlargement characterization of the capacity was investigated by AC impedance

more »

... . As a result, in the case of Cu complex adsorbed ACF, in the sulfuric acid electrolyte, the transition frequency shows larger values comparing to none adsorbed one. But in the case of Cu complex adsorbed ACF in the sodium bromide aqueous solution, the frequency shows smaller values comparing to none adsorbed one. On the other hands, hydroquinone adsorbed ACF showed larger transition frequency comparing to none adsorbed one.