Differential capacity of the double-layer formed at a solid electrode (Pt, Au)/ionic liquid interface

Abstract

The differential capacity at the electrode (Pt, Au)/ionic liquid interface of 18 ionic liquids (ILs), was measured applying chronoamperometry. The measurements were done by a two electrode system. The double layer capacity at the Pt/IL and Au/IL interface was 1-8 μF/cm2. The capacity, estimated from the impedance measurements, was approximately constant within a potential range of ca. 3 V © 2007 Verlag der Zeitschrift für Naturforschung.