The electrocatalytic characteristics of Sb₂Se₃ thin films prepared by electrochemical technique were examined for the evolution of hydrogen by the electrolysis of water. The thermally treated Sb₂Se₃ samples obtained from a non-aqueous electrolyte were studied on the Ni electrode for determining their catalytic activity in the process of water electrolysis. According to the calculated, Sb₂Se₃ exhibit the lowest Tafel slope in comparison to Pt and Ni electrodes. According to photoelectrochemical investigations, these samples are light-sensitive and can be employed as a photocathode in the hydrogen evolution reaction. Extrapolating the C^-2-E plot onto the potential axis results in a flat band potential V_fb of -1.45 V (compared to Ag/AgCl). The value precisely represents the electrodeposited p-type semiconductor Sb₂Se₃'s thermodynamic capacity to generate hydrogen from water under given conditions.

doi.org/10.32737/0005-2531-2025-2-79-87