Nanostructured Mn-doped CeO2 thin films with enhanced electrochemical properties for pseudocapacitive applications

Cerium oxides with variable oxidation states, high interfacial charge transfer rate have demonstrated to be a potential pseudocapacitive material. In this paper, we present the structural and electrochemical properties of undoped Mn-doped CeO2synthesized using successive ionic layer adsorption reaction(SILAR) method. The results as obtained from x-ray diffraction (XRD) confirmed cubic fluorite structure CeO2 which was unaltered despite doping concentration. However, tensile strain ~2.3% observed due radii difference. topography showed porous network nanograins, accounting for strong redox transfer. A specific capacitance 690 Fg?1 5 wt% CeO2, cyclic voltammetry curve at scan 10 mV/s. This value is considerably higher than what ceria, indicating that Mn improved performance ceria films.