Electrospun flexible 1D-MnO2 nanofibres: a versatile material for energy storage application

We describe facile electrospinning route for fabricating 1D-MnO 2 nanofibres based high-performance flexible electrode for energy storage application. The physico-chemical and morphological analyses showcase the fibrous matrix of MnO 2 with its continuant elements in their atomic ratios. The surface composition followed by chemical states and stretching bond length of Mn–O were analysed using XPS and RAMAN spectroscopy. The surface roughness and wettability of electrodes were analysed using AFM and water contact angle measurements. The MnO 2 NFs demonstrated pseudocapacitive signature with better electrochemical performance as specific capacitance of 517.81 F/g, specific power of 89.36 kW/kg, specific energy of 28Wh/kg and excellent cyclic stability (91.73% retention after 1000 cycles, with ~ 10% loss in the specific capacitance after 1000 cycles) in 1 M Na 2 SO 4 aqueous electrolyte. Being cost effective and environmental friendly design of developed MnO 2 showcase the potential candidature for energy harvesting application.