Preparation and characterization of electrodeposited amorphous molybdenum sulfide

Abstract

Amorphous molybdenum sulfide has been electrodeposited onto tin oxide-coated glass electrode from an aqueous ammonium tetrathiomolybdate solution. Cyclic voltammetry, potential step experiments, chemical analysis and scanning electron microscopy (SEM) have been used to characterize the deposited films. Cyclic voltammetry performed in the electrolytic bath, with and without supporting electrolyte, show that the oxidation of MoS 4 2− is completely irreversible. SEM micrographs of the deposited films indicate that the morphologies are thickness independent at high magnification but that cracks are clearly visible at lower magnification for thicker films.