Structural and Energy Storage Properties of Hydrothermally Synthesized Y2MnCoO6 Double Perovskite

Herein, structural, morphological, and energy-storage properties of Y2MnCoO6 double perovskite synthesized by hydrothermal process are reported. The electrochemical investigation of Y2MnCoO6 is a novel aspect of the work, and this composition is being synthesized for the first time employing the hydrothermal technique. The powder X-ray diffraction analysis shows formation of cubic crystal phase with Ia3 over bar (206) symmetry and lattice parameters as a = b = c = 10.60 angstrom. It is indicated in the microstructure study that the morphology of the sample material is almost homogenous in the form of microspheres. The microsphere shape allows superior charge movement at the nanoscale, enabling more area available for electrochemical reactions to take place. The high-resolution transmission electron microscopy (HRTEM) reveals the grain size in the range of 50-100 nm. The X-ray photoelectron spectroscopy reveals the occurrence of Y3+, Mn3+, and Co2+/3+, ions on the surface of Y2MnCoO6. The energy-storage behavior of nanostructured Y2MnCoO6 electrodes studied via cyclic voltammetry and chronopotentiometry displays the redox nature of the Y2MnCoO6. The calculated value of specific capacitance is found to be approximate to 148.0 Fg(-1) at current density of 0.5 Ag-1; with approximate to 85% specific capacitance retention, after 10 000 cycles.