The invention relates to lithium ion batteries and, more particularly, to lithium ion conducting composite polymer electrolyte separators. The separators include a nanofiber mat composed of electrospun nanofibers. The nanofibers include a polymer having one or more polar halogen groups, a lithium-containing solid or liquid electrolyte and nanoparticle filler. The polymer, electrolyte and filler are combined to form a solution that is subjected to the electro-spinning process to produce electrospun nanofibers in the form of the mat.

Provided is a method for manufacturing a solid secondary battery, wherein the method includes forming a composite electrolyte film, and forming a positive electrode and a negative electrode respectively on both surfaces of the composite electrolyte film. The forming of a composite electrolyte film includes preparing inorganic ion conductor powder coated with an ion resistance layer, removing the ion resistance layer to expose the surface of the inorganic ion conductor powder, mixing the inorganic ion conductor powder with an organic ion conductor and a solvent to prepare a composite electrolyte solution, and removing the solvent from the composite electrolyte solution.

A composition of matter may include pores and non-tri-zone particles and tri-zone particles. In one implementation, each tri-zone particle may include carbon fragments intertwined with each other and separated from one another by mesopores. Each tri-zone particle may also include a deformable perimeter that may coalesce with adjacent non-tri-zone particles or tri-zone particles. In some aspects, the tri-zone particles may include aggregates formed by a multitude of the tri-zone particles joined together. In some aspects, mesopores may be interspersed throughout the aggregates. Each tri-zone particle may also include agglomerates, where each agglomerate includes a multitude of the aggregates joined together. In some aspects, macropores may be interspersed throughout the aggregates.

An anion exchange ionomer is disclosed that contains a fluorinated, ether-free backbone, and a fluorinated ether based quaternary ammonium functional group. The novel polymer has improved chemical and mechanical stability as compared to the state-of-the-art materials for incorporation in anion exchange membrane. The disclosed anion exchange ionomer may be incorporated into an anion exchange membrane and used in electrochemical applications.

Batteries component structures and manufacturing methods, in particular including an electrode assembly having an inorganic-organic hybrid solid-state electrode can enhance electrochemical performance. The assembly may include a solid-state electrolyte layer component that is wholly inorganic, substantially dense and pinhole free and an interlayer stabilizing the solid-state electrolyte for contact with electrode.

This lithium ion secondary battery comprises a negative electrode, a positive electrode, a non-aqueous electrolyte including a lithium salt, and an aqueous electrolyte including a lithium salt, wherein: among the negative electrode and the positive electrode, the aqueous electrolyte contacts only the positive electrode; among the negative electrode and the positive electrode, the non-aqueous electrolyte contacts at least the negative electrode; the positive electrode contains a positive electrode active material; the positive electrode active material contains a lithium transition metal composite oxide and a surface modification layer formed on the surface of primary particles of the lithium transition metal composite oxide; and the surface modification layer contains an alkali earth metal element.

Set forth herein are compositions comprising A.Math.(LiBH.sub.4).Math.B.Math.(LiX).Math.C.Math.(LiNH.sub.2), wherein X is fluorine, bromine, chloride, iodine, or a combination thereof, and wherein 0.1≤A≤3, 0.1≤B≤4, and 0≤C≤9 that are suitable for use as solid electrolyte separators in lithium electrochemical devices. Also set forth herein are methods of making A.Math.(LiBH.sub.4).Math.B.Math.(LiX).Math.C.Math.(LiNH.sub.2) compositions. Also disclosed herein are electrochemical devices which incorporate A.Math.(LiBH.sub.4).Math.B.Math.(LiX).Math.C.Math.(LiNH.sub.2) compositions and other

A solid ion conductive layer can include a foamed matrix and an electrolyte material including a hygroscopic material. In an embodiment, the electrolyte material can include a halide-based material, a sulfide-based material, or any combination thereof. In another embodiment, the solid ion conductive layer can include total porosity of at least 30 vol % for a total volume of the solid ion conductive layer.

An amorphous composite solid electrolyte is provided that includes one or more three-dimensional branched macromolecules with a core portion and at least three arm portions connected to the core portion. Each arm portion includes a random copolymer or a block polymer comprising a first monomer and a second monomer with a molar ratio of the first monomer to the second monomer in the range from greater than 0 to less than or equal to 1. An ion conductive electrolytic solution including at least one lithium salt solution in an amount of approximately 1 mol/l to 10 mol/l is entrained within the branched macromolecule, with a weight ratio of the branched macromolecule to the ion conducive electrolytic solution equal to or lower than 1:9, such that the branched macromolecule has a swelling degree of at least 5:1 (liquid:polymer in weight) of the ion conductive electrolytic solution.

A cathode may be formed with one or more regions positioned adjacent to one another. At least one region may include particles, where each particle includes carbon fragments and a deformable perimeter that may coalesce with adjacent particles. At least one region may include aggregates, where each aggregate may be formed of several particles joined to one another. Pores may be interspersed throughout the aggregates. At least one region may include agglomerates, where each agglomerate may be formed of a multitude of the aggregates joined to one other. At least one region further comprises a selectively permeable shell configured to form a separated liquid phase on the selectively permeable shell. The cathode may include at least one electrically-conductive region. At least one region has an electrical conductivity in an approximate range between 500 S/m to 20,000 S/m at a pressure of 12,000 pounds per square in (psi).