Galvanostatic investigation of electrochemical processes at the C/RbCu₄Cl₃I₂ interface

Abstract.

The kinetics of electrochemical processes at a vitreous carbon electrode in contact with the solid electrolyte RbCu₄Cl₃I₂ has been investigated. In the range of potentials from zero up to the decomposition potential of the electrolyte (0.57 V), the rate of the reversible electrode reaction Cu⁺–e^–↔Cu²⁺ is controlled by slow diffusion of the electronic defects (Cu²⁺ ions or holes) in the electrolyte. The diffusion coefficient of these defects is equal to 1.5×10^–8 cm² s^–1. The exchange current density of the electrode reaction is equal to 20×10^–6 A cm^–2.