INVESTIGATION OF ELECTROCHEMICAL CELL WITH REVERSIBLE ELECTRODE – SOL-ID ELECTROLYTE OR IONIC MELT INTERFACE BY LINEAR CURRENT AND LINEAR POTENTIAL SCANNING METHODS

Abstract

The main purpose of this article is a study of the kinetics of two simultaneous process: the charging of the electric double layer and discharge-ionization on the reversible silver electrode – sulfate solid electrolyte interface and its melt in two regimes: galvanodynamical and potentiodynamical. The investigation of the electrochemical kinetics was performed by operational impedance method which is based on the Laplas transformation and Ohm’s law between current, voltage and complex resistance (impedance). By corresponding mathematical computations the analytical expression of time dependence of current which passes through electrochemical cell in potentiodynamical mode were received. The analytical expression of interface potential – time dependence in galvanodynamical regime (mode) was obtained also. The electrode – solid electrolyte or its ionic melt interface potential – time dependence in galvanodynamical regime is described by exponential function. The time dependence of the current which passes through electrochemical cell in potentiodynamical regime is described by linear function. The comparative analysis of a results of two independent methods showed that for the investigation of the electrochemical systems contained the reversible metallic electrode – solid electrolyte and ionic melt interface may be used not only alternate current methods but relaxation methods also (for instance, Galvanodynamic and Potentiodynamic methods).Forcitation:Guseynov R.M.; Radzhabov R.A.; Makhmudov Kh.M.; Kelbikhanov R.K. Investigation of electrochemical cell with reversible electrode – solid electrolyte or ionic melt interface by linear current and linear potential scanning methods. Izv. Vyssh. Uchebn. Zaved. Khim. Khim. Tekhnol. 2018. V. 61. N 4-5. P. 57-63