Manganese Oxide Nanofibers for High Performance Supercapacitors

Here we reported the facile electrospinning technique for the synthesis of MnO2 nanofibers (NFs) electrodes envisaged in energy storage application. As-spun MnO2 NFs are followed by annealing at 500 °C to remove polymer matrix. Rough and randomly oriented morphology of the fibers was confirmed through SEM analysis. Structural and wettability studies of synthesized electrodes were carried out using Raman Spectroscopy and Contact Angle Measurement respectively. While, electrochemical properties of MnO2 NFs electrode were studied with the help of cyclic voltammetry as well as galvanostatic charge–discharge measurement, which revealed 336 F/g specific capacitance for 5 mV s−1 scanning rate, 27.7 Wh/kg specific energy, 83.3 kW/kg specific power with a Coulombic efficiency of 98% in 1 M NaOH aqueous electrolyte solution.