Controlled synthesis of ammonium manganese tri-fluoride nanoparticles with enhanced electrochemical performance

Herein, ammonium manganese tri-fluoride (NH₄MnF₃) nanoparticles (∼20-80 nm) were synthesized via easy, non-sophisticated and environment friendly reverse micro-emulsion method for the first time. Two type i.e. sintered and non-sintered NH₄MnF₃ nanoparticles were prepared with different ratio by changing water to surfactant percentage while keeping the temperature constant at 22 °C. The structural, morphological and optical properties of as-prepared nanoparticles were investigated by x-ray diffraction (XRD), energy-dispersive x-ray spectroscopy (EDX), scanning electron microscopy (SEM), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), UV-vis spectroscopy and Fourier-Transform infrared (FTIR) spectroscopy. The electrochemical performances were measured by using cyclic voltammetry and the result shows that after sintering the performance are significantly improved up to ∼0.079 mA g^-1. We hope, our approach will opens up a new opportunity for such materials in energy storage devices.