Molten salt sodium oxygen battery

A method of making a molten-salt Na—O2 battery comprising:

• providing a battery housing;
• loading the battery housing with an amount of Na;
• assembling a solid-state electrolyte within the battery housing such that the solid-state electrolyte directly contacts the Na;
• forming a composite second electrode, wherein forming comprises combining metal particles and a redox-active salt in predetermined ratios, thereby yielding a solid mixture, and compressing the solid mixture on a conductive substrate;
• and
• assembling the composite second electrode within the battery housing such that the solid-state electrolyte is disposed between the Na and the composite second electrode.

A method of producing electricity, comprising:

• providing a molten-salt Na—O2 battery comprising:
• a first electrode comprising liquid Na in direct contact with a solid-state
• electrolyte;
• a composite second electrode in contact with the solid-state electrolyte, wherein the composite second electrode comprises:
• particles having an oxygen-active metal surface;
• and a molten salt comprising redox-active ions;
• wherein the solid-state electrolyte is disposed between the first electrode and the composite second electrode;
• allowing O2 to contact the composite second electrode;
• exposing the battery to a predetermined operating temperature selected to maintain Na in a liquid state and to maintain the molten salt in a molten state;
• and
• providing an electrical connection between the first electrode and the second composite electrode.