Abstract: A cathode active material of formula LiNixMnyAlzM?O2-?B? or NaNix?Mny?Alz?M???O2-??B??, wherein M is a combination of Ti, and Mg; M? is Ti, Mg, or a combination of thereof; B is selected from the group of F, S, Se, or Cl; 0.8<x<1, 0<y<0.2, 0<z?0.2, 0???0.2, 0???0.1, 0.5<x?<1, 0<y?<0.5, 0<z??0.2, 0????0.2, and 0????0.1. The particle is a single crystal, a single particle, or a secondary particle comprising a plurality of primary particles; and the particle is a uniform composition or a concentration gradient composition.

Abstract: A cathode material comprising: a cathode active material of formula LiNixMnyCozO2 or NaNixMnyCozO2 and having a partial or whole particle concentration gradient, wherein at least two or three elements concentration gradually change in the part or whole particle from the center part to the surface part of the particle (i.e. along a vector radius); 0.5<x?1, 0?y?0.33, 0?z?0.33.

Abstract: A cathode material comprising: a cathode active material of formula LiNixMnyCozO2 or NaNixMnyCozO2 and having a partial or whole particle concentration gradient, wherein at least two or three elements concentration gradually change in the part or whole particle from the center part to the surface part of the particle (i.e. along a vector radius); 0.5?x?1, 0?y?0.33, 0?z?0.33.

Abstract: An electrochemical cell includes an anode that includes silicon, a conductive carbon, a lithium titanate, lithium metal, or a combination of any two or more thereof; a separator; a cathode having a cathode active material and a redox active species either mixed into the cathode or coated onto the cathode; and an electrolyte that includes a salt; and an aprotic solvent comprising a fluorinated ether solvent, a carbonate solvent, or a mixture thereof, with the proviso that the redox active species has substantially no solubility in the electrolyte. The redox active species may be a redox active organic compound or polymer.

Abstract: An electrochemical cell includes a cathode of oxygen or a metal oxide; an anode being made of lithium metal; and an electrolyte including a lithium sulfonylimide salt, a terminally fluorinated glycol ether, and optionally an electrolyte additive, a aprotic gel polymer, or a mixture thereof.

Abstract: An electrochemical device includes a lithium anode having a red poly(benzonitrile) coating covering at least a portion of the anode; a separator and an air cathode comprising reduced graphene oxide over gas diffusion layer; and an electrolyte comprising an ether solvent, benzonitrile, and a lithium salt.

Abstract: Cathode materials for lithium ion batteries, lithium ion batteries incorporating the cathode materials, and methods of operating the lithium ion batteries are provided. The materials, which are composed of lithium iron oxides, are able to undergo reversible anionic and cationic redox reactions with no O2(g) generation.

Abstract: An electrochemical device includes a lithium anode having a red poly(benzonitrile) coating covering at least a portion of the anode; a separator and an air cathode comprising reduced graphene oxide over gas diffusion layer; and an electrolyte comprising an ether solvent, benzonitrile, and a lithium salt.

Abstract: An electrochemical device includes an air cathode comprising a SEI (solid electrolyte interphase) layer on a carbon support.

Abstract: Anodic materials for lithium ions batteries include a current collector and a superlattice disposed on at least a portion of the current collector, the superlattice comprising: alternating layers of an anode active material and an anode inactive material; and a plurality of channels that extend from the current collector through the alternating layers of anode active material and anode inactive material.

Abstract: Methods of applying as-prepared alkaline source materials for a secondary battery. The cathode includes an alkaline source material with or without coating including an alkali metal oxide, an alkali metal sulfide, an alkali metal salt, or a combination of any two or more thereof. An as-prepared spread coating layer for a secondary battery, the coating layer includes an alkaline source material, including an alkali metal oxide, an alkali metal sulfide, and an alkali metal salt, with or without coating, a conductive carbon, a catalyst, or a combination of any two or more thereof. An as-prepared electrolyte for a secondary battery, the electrolyte includes an alkaline source material including an alkali metal oxide, an alkali metal sulfide, an alkali metal salt, or a combination of any two or more thereof.

Abstract: This disclosure relates generally to battery cells, and more particularly, electrolyte additives for use in lithium ion battery cells.

Abstract: This disclosure relates generally to battery cells, and more particularly, electrolyte additives for use in lithium ion battery cells.

Abstract: This disclosure relates generally to battery cells, and more particularly, electrolyte additives for use in lithium ion battery cells.

Abstract: A metal-air battery includes an anode; a low-dimensional catalyst cathode; and an electrolyte; wherein: the low-dimensional catalyst cathode comprises a functional metal layer on a carbon support overcoated with a catalyst layer; the electrolyte comprises an aprotic solvent that is an ether-based solvent, a fluorinated ether-based solvent, an oligo (ethylene oxide) solvent, or a mixture of any two or more thereof; and the electrolyte is free of carbonate solvents.

Abstract: This disclosure relates generally to battery cells, and more particularly, electrolyte additives for use in lithium ion battery cells.

Abstract: This disclosure relates generally to battery cells, and more particularly, electrolyte additives for use in lithium ion battery cells.

Abstract: A [PxSbyMz]p/[carbon]q composite where x, y, and z represent atomic percentage values and are x>0; y>0; and z?0, M is an electrically conductive metal, p and q represent the weight percentage values of the composite wherein p and q are in the range of 0-100%, and is p>0.

Abstract: An electrochemical device includes an air cathode using air as the cathodic gas; a discharge product of sodium peroxide dihydrate; an anode comprising sodium metal; a porous fiber separator; and a non-aqueous electrolyte comprising a sodium salt and a solvent.

Abstract: An electrochemical device includes a cathode comprising a first cathode component of lithium and SexSy; and a second cathode component of an alkali metal and/or alkaline earth metal sulfur and/or selenide, different from the first cathode component; an initial discharge product of a polyselenide and/or polysulfide anion charge compensated by an alkali metal and/or alkaline earth metal cation; an anode; a porous separator; and a non-aqueous electrolyte with one or more lithium salts, and one or more solvents; wherein the electrochemical device is a lithium sulfur and/or lithium selenide battery.