rGO Sheets/ZnFe2O4 Nanocomposities as an Efficient Electro Catalyst Material for I3−/I− Reaction for High Performance DSSCs

In this paper, Reduced Graphene Oxide (rGO)/ZnFe2O4 (rZnF) nanocomposite is synthesized by a simple hydrothermal method and employed as counter electrode (CE) material for tri-iodide redox reactions in Dye sensitized solar cells (DSSC) to replace the traditional high cost platinum (Pt) CE. X-ray diffraction analysis High resolution Transmission electron microscopy, clearly indicated formation of rZnF also amorphous rGO sheets were smoothly distributed on surface ZnFe2O4 (ZnF) nanostructure. The rZnF-50 CE shows excellent electro catalytic activity toward I3− reduction, which has simultaneously been confirmed cyclic voltammetry, electrochemical impedance spectroscopy Tafel polarization measurements. A DSSC developed (η = 8.71%) obtained quite higher than Pt 8.53%) based under same condition. superior performances due addition graphene Spinel nanostructure results creation highly active sites, fast transport linkage between electrolyte. Thus it’s promising low DSSCs.