Hydrothermal Synthesis of Mn2P2O7 Nanostructures and Their Electrochemical Behavior in Organic Electrolyte

In this work, Mn2P2O7 nanoparticles were synthesized via hydrothermal route without any templates or surfactants followed by heat treatment at 700 degrees C. The as-prepared samples were characterized and described using thermogravimetric and differential thermal analysis (TG-DTA), X-ray diffraction (XRD), Fourier transform infrared spectrometer (FT-IR), Scanning electron microscopy (SEM) analysis. The resultant product was evaluated for electrochemical properties in organic electrolyte between -1.4 and 1.6 V using cyclic voltammetry in ambient condition. It revealed the specific capacitance of 565 F/g at scan rate of 5 mV/s. The outstanding pseudocapacitive performance was absorbed due to the faradaic oxidation and reduction reactions related to the intercalation/de-intercalation of the tetrabutylammonium cation (TBA+) electrolyte and inorganic pyrophosphate lattice. It was believed that the cost effective Mn2P2O7 nanoparticles may be promising electrode materials for electrochemical capacitors.