NOVELTY - A molten salt battery has an operating temperature of 25-120 degrees C, and consists of an outer package, a positive electrode (1) containing a binder and a positive electrode material including a positive electrode active material, a negative electrode (2) containing a negative electrode active material comprising metallic sodium, tin-based material, silicon-based material, carbon-type material and/or titanium oxide-type, a separator (3), and an electrolyte solution containing bisfluorosulfonylamide or sodium bisfluorosulfonylamide as an organic cation and an anion.    USE - Molten salt battery is used for bus, truck and electrical power storage in medium-scale power network and home.    ADVANTAGE - The molten salt battery has excellent charging and discharging characteristics.    DETAILED DESCRIPTION - A molten salt battery has an operating temperature of 25-120 degrees C, and consists of an outer package formed with an aluminum plate, a stainless plate, a copper plate or a multilayer insulation board, a positive electrode containing a polyvinylidene fluoride-type binder or polytetrafluoroethylene-type binder and a positive electrode material including a positive electrode active material and a negative electrode containing a negative electrode active material comprising metallic sodium, tin-based material, silicon-based material, carbon-type material and/or titanium oxide-type, which are accommodated in the exterior, a separator which is interposed between the adjacent positive electrode and the negative electrode, and an electrolyte solution which is impregnated at the separator. The electrolyte solution contains bisfluorosulfonylamide or sodium bisfluorosulfonylamide as an organic cation and an anion. The separator is formed with polyolefin-type material, polytetrafluoroethylene, glass fiber or ceramics.    DESCRIPTION OF DRAWING(S) - The drawing shows a sectional view of the molten salt battery main component.    Positive electrode (1)    Negative electrode (2)    Separator (3)    Molten salt battery main component (10)