Characterization of Reference Electrode Ag/AgCl Dry Type by Cyclic Voltammetry

摘要

In the present work the characterisazion of reference electrode Ag/AgCl type dry by 0.01 M [Fe(CN)6]3-/4- in 0.1 M KCl using the technique of cyclic voltammetry at potential range of -0.2 to 0.8 V and scan rate variation.. The anodic (Epa) and the cathodic (Epc) peak potentials. as well as the corresponding anodic (ipa) and cathodic (ipc) peak currents. were obtained at different scan rates (10. 20. 25. 50. 100. and 200) mV/s . The half-wave potentials (E1/2) of the [Fe(CN)6]4-/ [Fe(CN)6]3- couple in the investigated solvent media have been evaluated. Ip versus v1/2 have been calculated using the Randles-Sevcik equation.