Electrodeposition of Selenium from the 1-Ethyl-3-methylimidazolium Chloride-Tetrafluoroborate Room-Temperature Ionic Liquid

Electrodeposition of the selenium film in 1-ethyl-3-methylimidazolium chloride-tetrafluoroborate ionic liquid containing excess chloride ions on indium tin oxide (ITO) coated glass electrodes was studied at 30 degrees C. Cyclic voltammogrammetric results indicate that the reduction reaction of Se(IV) to Se(0) is not a simple four-electron reduction. Scanning electron microscopy reveals that the morphology of the selenium deposits is affected by the applied deposition potential and X-ray powder diffraction data indicates the Se deposits is the crystalline of t-Se phase.