The objective of this research work is an extension of our previous work. We have developed a simple, straightforward, and less time consuming thermo-chemical conversion process to manufacture submicron to micron size platelet/bar shaped single crystal powders of Na0.44MnO2 cathode material from an aqueous based solution precursor. Electrochemical characterization indicated specific capacity close to the theoretical value (122 mAhg-1) with good cyclability. However, the rate performance of Na0.44MnO2 is still not satisfied. The Na0.44MnO2 submicron to micron size platelet/bars exhibited a discharge specific capacity of 20 mAhg-1 at 12.3 C. Here we report a unique Na0.44MnO2 nanofibrous one dimensional (1D) structure manufactured by electrospinning technique. The phase, crystallinity and microstructures of the synthesized materials were investigated by X-ray diffraction, Scanning electron microscopy and Transmission electron microscopy. The electrochemical behavior was evaluated using electrochemical techniques including galvanostatic charge/discharge cycling, cyclic voltammetry and electrochemical impedance spectroscopy etc. The synthesized nanofiber (NF) showed a hierarchal structure consisted of many nanograins stacked along the fibers’ axial direction and demonstrated a superior rate performance with reversible specific capacity of 69.5 mAhg-1 at 10 C. It is believed that this outstanding rate performance of thus obtained Na0.44MnO2 nanofiber is resulted from the unique functional properties of 1D nanostructure with direct current pathways, shortened ion diffusion length and large electrolyte−electrode contact area and will pave a way for promoting the substantial use of sodium-ion storage systems in the future.