Due to concern over the sustainability of Lithium ion battery (LIB) as energy storage system as a result of its limited resources, sodium ion battery (SIB) has been considered as an alternative energy storage system to supplement LIBs, due to the fact that, sodium is abundant and less expensive comparable to lithium. Concentration have been on obtaining the appropriate electrode materials for SIB application. NaxMnO2 has demonstrated its ability as a cathode material in SIB. There are different phases of these materials depending on the amount of Na present. Among these Mn-based cathode materials, tunnel Na0.44MnO2 structure, have received wide attention due to; its large channel which is considered to be suitable for ion insertion/extraction process as a cathode, and structural stability attributed to the formation of MnO5 pyramid and sheets of edge-shared MnO6 octahedral to form a large S-channel. However, these tunnel materials suffer from low initial charge and reversible capacities. Also, they are known to have drawbacks associated with lattice transformation which is attributed to Jahn-Teller distortion and Mn2+ dissolution as a result of disproportionation reaction of Mn3+ into Mn2+ and Mn4+ during repeated cycling. These disadvantages are considered to cause considerable strains in the crystal structure, leading to inferior rate and cycling performance. To find remedy to the above drawbacks and to enhance electrochemical performance, 1D nanostructured Fe-doped Na0.44MnO2 was adopted. Fe substitution of Mn in the structure, helps to maintain material structural stability by suppressing Mn dissolution during cycling, and also give rise to increase in the operating voltage leading to increase in the energy density of the material. 1D nanostructured materials generally shows better performance as it improves the ion diffusion rate. The above adopted strategies provide improved electrochemical performance with excellent rate capability and long cycle life comparable to pristine tunnel Na0.44MnO2 for SIB application.