Abstract: Cathode active materials that include a metal compound having the formula MaRb, where M is a metal, each R is independently selected so that MaRb is an inorganic or organometallic compound or complex, and a and b are independently positive nonzero real numbers; and a metal oxide having the formula MxOy, where M is the same metal in the metal compound, and x and y are independently positive nonzero real numbers; provided that the metal compound and the metal oxide are in contact. The cathodes can be economically incorporated into batteries that can provide high energy density.

Abstract: Self-charging electrochemical cells, including self-charging batteries that incorporate such self-charging electrochemical cells, the electrochemical cells including a cathode including a cathode active material, an electrolyte including a solvent and a salt dissolved in the solvent, the electrolyte being in contact with the cathode, where the cathode active material is transformed into a discharge product during or after a discharge of the self-charging electrochemical cell and a solubility of the cathode active material in the electrolyte is less than a solubility of the discharge product in the electrolyte.

Abstract: Cathode active materials that include a metal compound having the formula MRx, where M is a metal, R is an atom, a molecule, or a radical having an oxidation state of ?1, and x is a positive nonzero real number; and a metal oxide having the formula M?yOz, where M? is a metal, and y and z are independently positive nonzero real numbers; provided that the metal compound and the metal oxide are in contact. The cathode active materials can be used to prepare cathodes that evolve little or no oxygen during operation. The cathodes can be economically incorporated into batteries that can provide high energy density.

Abstract: Methods of manufacturing cathode active materials, including preparing a solution of a hygroscopic species and a reactive oxygen species, heating the solution at a temperature that is less than about 400° C. for a time sufficient for a precipitate of the cathode active material to form, and collecting the cathode active material. The cathode active materials can be used to prepare cathodes that evolve little or no oxygen during operation. The cathodes can be economically incorporated into batteries that can provide high energy density.

Abstract: Solid-state electrochemical cells including a solid-state electrolyte, where the solid-state electrolyte includes one or more dendrites formed on and/or in the solid-state electrolyte material. The dendrites of the solid-state electrolyte include a metal-containing compound that in turn includes oxygen and/or sulfur.

Abstract: Disclosed herein are batteries comprising cathodes having halogenated compounds as cathode active materials and including a greenhouse gas within the battery. The halogenated batteries can be operated under an atmosphere comprising a greenhouse gas, wherein the battery is fabricated under a greenhouse gas atmosphere, or wherein the greenhouse gas is introduced into the battery before use. Also disclosed herein are methods of fabricating batteries comprising cathodes having halogenated compounds as cathode active materials and including a greenhouse gas within the battery. The halogenated batteries can include an aliphatic nitrile compound as part of the electrolyte, an organic material having a conjugated cyclic structure as part of the cathode active material, or a metal oxide as part of the anode active material to improve the battery performance.

Abstract: Methods of forming an electrochemical cell using a non-inert gas are disclosed. Exemplary methods include providing a first gas before applying or more of current and voltage to the cell. The first (e.g., non-inert) gas can facilitate formation of a solid electrolyte interphase (SET). Further examples of the disclosure relate to methods of forming an electrochemical cell or portion thereof by electrospraying a solution including polymeric material. Such methods potentially eliminate a step of compressing the cell at a pressure beyond 100 MPa and prolong the cycle life while preventing a fire hazard.

Abstract: Methods of forming an electrochemical cell using a non-inert gas are disclosed. Exemplary methods include providing a non-inert gas before and/or after at least one charge and/or discharge cycle. The non-inert gas can facilitate formation of a solid electrolyte interphase (SEI). Further examples of the disclosure relate to methods of forming an electrochemical cell or portion thereof by electrospraying a solution including polymeric material. Such methods potentially eliminate a step of compressing the cell at a pressure beyond 100 MPa and prolong the cycle life while preventing a fire hazard.