Abstract: Rechargeable, long cycle life solid-state galvanic cells comprising cation conducting solid polymer electrolyte contacting intercalation compound negative and positive electrodes are disclosed. Rechargeable solid-state lithium conducting solid polymer electrolyte cells utilize lithium intercalating electrodes and lithium ion conducting solid polymer electrolyte. Rechargeable solid-state sodium ion conducting solid polymer electrolyte cells utilize homogeneous matrix electrodes comprising transition metal doped beta"-alumina electrodes and sodium ion conducting solid polymer electrolyte.

Abstract: A solvated electron lithium electrode comprising a solution of lithium dissolved in liquid ammonia with a lithium intercalating membrane is provided for use in rechargeable high energy density lithium-based cells utilizing a lithium ion conducting liquid non-aqueous electrolyte with a solid positive electrode, or utilizing liquid lithium ion conducting positive electroactive material. The rechargeable lithium-based cell according to the present invention reduces coulombic efficiency losses associated with surface morphological changes at a solid lithium electrode, and is suitable for electrical vehicle propulsion and load leveling applications.

Abstract: A solvated electron lithium electrode comprising a solution of lithium dissolved in liquid ammonia is provided for use in rechargeable high energy density lithium-based cells utilizing a lithium ion conducting solid electrolyte to separate the liquid solvated negative electrode from liquid positive electroactive material or electrolyte. The rechargeable lithium-based cell according to the present invention reduces coulombic efficiency losses associated with surface morphological changes at a solid lithium electrode, and is suitable for electrical vehicle propulsion and load leveling applications.