An Impedance Study of Ir(210) in HCl Solutions^1,2

T. Pajkossy^z and D. M. Kolb*

Institute of Materials and Environmental Chemistry, Chemical Reseach Center, Hungarian Acadeny of Sciences,
Budapest, Pusztaszer; út 59–67, H 1025, Hungary

* Institute of Electrochemistry, University of Ulm, D-89069 Ulm, Germany

Received January 14, 2008; in final form, February 29, 2008

Abstract—In the Ir(210)/aqueous HCl solution system the “hydrogen adsorption region” is due to the com-
bined process of hydrogen and chloride ion adsorption. We demonstrate that by using impedance spectroscopy
the rates of, and charges associated with, hydrogen and chloride adsorption rates can be determined separately.

Key words: adsorption, double layer, capacitance, charge, interface, iridium

DOI: 10.1134/S1023193509010054

Pleiades Publishing home page | journal home page | top

If you have any problems with this server, contact webmaster.