Abstract: Cathode materials comprising composites of vanadium sulfide and sulfur are provided along with methods of making same. Solid-state lithium sulfur batteries comprising such cathode materials are also provided.

Abstract: Disclosed is an electrochemical cell comprising a lithium-based anode and a sulfur-based cathode and an electrolyte, wherein the cathode material comprises a polymeric binder, wherein the binder comprises ammonium functional groups. In one aspect, the polymeric binder comprises ammonium chloride functional groups.

Abstract: The present invention pertains to sulfur cathodes for use in an electric current producing cells or rechargeable batteries. The sulfur cathode comprises an electroactive sulfur containing material, an electrically conductive filler and a non-electroactive component. The invention further pertains to rechargeable batteries comprising said sulfur cathode.

Abstract: A compound having the formula LiaNa2?aFePO4F, wherein 0<a?2 may be synthesized by exchanging lithium ions for sodium ions in Na2FePO4F. The compound may be used as a cathode material for a lithium ion battery. A battery may be comprised of an electrode active material having the formula Li2FePO4F, an anode; and an electrolyte. Na2FePO4F may be synthesized by flux reaction. Microcrystalline Na2FePO4F may be synthesized by a solution method. Na2FePO4F may be used as a cathode material for a lithium ion battery and may be carbon composite coated.