A Vacuum Molten Salt Electrolysis (VMSE) Furnace is a highly specialized reactor designed to perform electrolysis within a molten salt bath while maintaining a controlled vacuum or low-pressure environment.

While standard molten salt electrolysis furnaces operate under inert gas, a VMSE system provides three distinct advantages for high-purity battery research: (1) Enhanced Degassing: Vacuum pulls residual moisture and oxygen from the salt before melting, which is vital for Prussian Blue or NFPP synthesis where even trace H2O can cause lattice instability. (2) Low-Pressure Metal Collection: During the production of Metallic Sodium or Lithium, the vacuum helps in the "distillation" or separation of the metal from the electrolyte bath, leading to higher purity. (3) Removal of Halogen Gases: If you are electrolyzing chloride or fluoride salts, the vacuum system (paired with specialized scrubbers) ensures that toxic gases like Cl2 or F2 are efficiently removed from the reaction zone, protecting the heating elements from corrosion.