The work is devoted to the electrochemical co-deposition of iron and sulfur on Pt substrates from aqueous and nonaqueous electrolytes. The potential range of the single Fe and S and the bi -component Fe-S thin film electrodeposition is determined by applying the potentiodynamic polarization curves. The mechanism of the proceeding faradaic reactions on the surface of the platinum substrate is studied and identified in a broad potential range. The structure, stoichiometry, and morphology of Fe-S thin films deposited by potentiostatic and galvanostatic methods are determined using SEM, EDXA and X-ray phase analysis. The comparison of the results obtained in aqueous and non-aqueous electrolyte showed that Fe-S electrodeposition on the platinum substrate occurs by a similar mechanism in aqueous and non-aqueous electrolytes within a relatively broad potential range as in aqueous media, the process is facilitated due to the higher electrical conductivity of the electrolyte.

V.A. Majidzade, S.P. Mammadova, E.S. Petkucheva, E.P. Slavcheva, A.Sh. Aliyev, D. B. Tagiyev. Co-electrodeposition of iron and sulfur in aqueous and non-aqueous electrolytes. Bulgarian Chemical Communications, 2020, Volume 52 Special Issue E pp. 73 – 78