ABSTRACT
X (where Me = Cu, Ag and X = S, Se, Te) display a wide variety of physical and physical and chemical properties, that makes them promising for electronic equipment [1, 2]. A wide range of electrical and thermal properties, the ability to control these properties via controlled deviation from stoichiometry and high parameters of ion transport facilities make them convenient for the study of transport phenomena in mixed ionic and electronic conductors [3-5]. It should be noted that high cation conductivity and high value of self-diffusion coefficients are comparable with the conductivity and diffusion in liquid electrolytes and appear against the predominant electronic conductivity [6-8].
