The present invention generally relates to the metal batteries. The present invention discloses sodium-plated host material comprising sodium-plated or bonded with  metal modified electrospun carbon nanofiber, wherein the metal is selected from tin (Sn), silicon (Si), germanium (Ge), zinc (Zn), cobalt (Co) and lead (Pb). The  present invention also discloses a process for preparation of sodium-plated host material and a full cell comprising the sodium-plated host material.