MOLTEN SALT BATTERY AND METHOD FOR MANUFACTURING THE SAME, AND DEVICE FOR MANUFACTURING BATTERY ELEMENT FOR MOLTEN SALT BATTERY

摘要

PROBLEM TO BE SOLVED: To manufacture a molten salt battery superior in charge and discharge cycle characteristics with high productivity.SOLUTION: A method for manufacturing a molten salt battery comprises: (i) a step of preparing at least one battery component selected from a group consisting of a positive electrode, a negative electrode and a separator; (ii) a step of preparing a liquid solution including an electrolyte which stays in a solid state at an atmospheric temperature, and has sodium ion conductivity at least in a melting state, and a solvent for dissolving the electrolyte; (iii) a step of making the at least one battery component hold the liquid solution; (iv) a step of removing at least part of the solvent from the at least one battery component holding the liquid solution; (v) a step of forming an electrode group which includes the positive and negative electrodes and a separator interposed between the positive and negative electrodes after the removal of at least part of the solvent from the at least battery component; and (vi) a step of housing the electrode group in a battery case.