Abstract: This disclosure relates generally to battery cells, and more particularly, cathode active materials for use in lithium-ion battery cells.

Abstract: This disclosure relates to cathode active materials for use in lithium-ion battery cells.

Abstract: A non-aqueous electrolyte comprising a salt, a non-aqueous solvent, and a compound of Formula (I) or Formula (II) or Formula (III) or Formula (IV) or Formula (V):

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 comprising a cathode active material, an anode comprising an anode active material, and an electrolyte comprising a sulfonyl solvent, a terminally fluorinated glycol ether, and a salt. Other electrochemical cells include a cathode, an anode, a separator, and an electrolyte comprising: a lithium salt; a cathode stabilizing additive selected from the group consisting of vinylene carbonate, vinyl ethylene carbonate, LiBF2(C2O4), LiB(C2O4)2, LiPF2(C2O4)2, LiPF4(C2O4), LiPF6, LiAsF6, CsF, CsPF6, Li2(B12X12-iHi), Li2(B10X10-i?Hi?), or a mixture of any two or more thereof, wherein the cathode stabilizing additive is not the same as the lithium salt, wherein each X is independently at each occurrence a halogen, i is an integer from 0 to 12 and i? is an integer from 0 to 10; and a fluorinated organosulfate compound.

Abstract: An electrochemical device comprising of a sulfur-based or alkali and/or alkali earth metal sulfide-based cathode, alkali and/or alkali earth metal-based anode with or without anode protection, a porous separator, non-aqueous electrolyte composition comprising of two or more alkali and/or alkali earth salts that has a total non-alkali/alkali earth metal NO3? (nitrate) salt concentration of below 0.1 M, one or more solvent, and the inclusion of a high donor number lithium salt; wherein the electrochemical device is a alkali and/or alkali earth metal sulfur battery.

Abstract: A cathode active material includes a composition expressed as: Li1+?(NixMnyCoz)M1?(Nix?Mny?Coz?)M21??O2; or Na1+?(NixMnyCoz)M1?(Nix?Mny?Coz?)M21??O2; where: M1 represents a core composition comprising of Ni, Mn, and/or Co or a combination of at two of thereof; M2 represents a surface composition having at least 50% Co, and, optionally Ni and/or Mn; the structure of M2 may be a composite structure and includes a rock-salt or disordered rock-salt phase; 0.5??<1, 0?x?1, 0?y?0.5, 0?z?1, 0?x??0.5, 0?y??0.5, 0.5?z??1, and ?0.1???0.1; the sum of x, y and z is 0.9-1.1, and the sum of x?, y? and z? is 0.9-1.1.

Abstract: A cathode active material includes a composition expressed as: Li1+?(NixMnyCoz)M1?(Nix?Mny?Coz?)M21-?O2; or Na1+?(NixMnyCoz)M1?(Nix?Mny?Coz?)M21-?O2; where: M1 represents a core composition comprising of Ni, Mn, and/or Co or a combination of at two of thereof; M2 represents a surface composition having at least 50% Co, and, optionally Ni and/or Mn; the structure of M2 may be a composite structure and includes a rock-salt or disordered rock-salt phase; 0.5??<1, 0?x?1, 0?y?0.5, 0?z?1, 0?x??0.5, 0?y??0.5, 0.5?z??1, and ?0.1???0.1; the sum of x, y and z is 0.9-1.1, and the sum of x?, y? and z? is 0.9-1.1.

Abstract: A coated cathode material including high-nickel lithium cathode and a method of producing the same by atomic layer deposition.

Abstract: A cathode active material includes a plurality of cathode active particles, each particle being of a composition expressed as: [Li1+?(NixMnyCoz)1??O2]?M1[Li1+?(Nix?Mny?Coz?)1??O2]?M2[Li1+?(Nix?Mny?Coz?)1??O2]1-?-?M3; or [Na1+?(NixMnyCoz)1??O2]?M1[Na1+?(Nix?Mny?Coz?)1??O2]?M2[Na1+?(Nix?Mny?Coz?)1??O2]1-?-?M3; wherein: M1 is a structure having a layered phase; M2 has structure comprising a Mn-rich and/or spinel phase; M3 has a rock salt or disordered rock salt phase; M1, M2, and M3 have different formulae; an inner most core portion of the particle is one of M1, M2, or M3; an interlayer may be any one of the remaining two of M1, M2, or M3; an outer most layer may be the remaining member of M1, M2, or M3; 0??<1, 0<?<1, ?0.1???0.1, ?0.3???0.3, ?0.5???0.5, 0?x?1, 0?y?0.5, 0?z?1, 0?x??0.5, 0.5?y??1, 0?z??0.5, and 0?x??1, 0?y??1, 0?z??1; and the sum of x, y and z is 1, the sum of x?, y? and z? is 1, and the sum of x?, y?, and z? is 1.

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 active cathode material containing particles with a core containing a lithium transition metal oxide, each core at least partially encapsulated by a layer including the lithium transition metal oxide and dopant cation; and an outer layer containing metal oxide; wherein the dopant cation is selected from the group consisting of Al, Ti, Sn, Mg, Zr, Cu, Fe, Ca, W, Ga, Sc, Y, La, Hf, V, In, Nb, Ta, and any combination of two or more thereof; and the dopant cation is present in an amount of 10 wt. % or less of the particle.

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 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.

Abstract: The present invention provides, in part, methods and processes for the production of lithium superoxide (LiO2) which is free of other lithium-oxygen compounds, as well as compositions and electrochemical cells comprising lithium superoxide (e.g., lithium superoxide that is free of other lithium-oxygen compounds).

Abstract: The present invention provides, in part, electrodes (e.g., cathodes) comprising electroactive materials (e.g., cathode active materials), a primary coating comprising a high entropy metal oxide (HEO), and optionally a secondary coating layer comprising an ionic and electronic conductive polymer, as well as an energy storage device thereof, and methods for making the same.

Abstract: The present invention provides, in part, an electrochemical energy storage device comprising a metal anode, a separator, a high-mass-loading selenium-sulfur cathode and a lean electrolyte. In particular, the electrolyte described herein employs active solid-electrolyte interphase engineering salts and features unique solvating structure. The combination of high-mass-loading S cathode and the particular electrolytes can enhance one or more of the following cell properties: energy density, cycling stability, safety, and working temperature window.

Abstract: An electrochemical device includes an anode containing a phosphorus-carbon composite including a conductive carbon matrix and nano-sized phosphorus particles, wherein the nano-sized phosphorus particles are uniformly dispersed on the surface and/or pores of the carbon matrix.

Abstract: A lithium ion battery includes a cathode including a cathode active material; an anode including silicon, a conductive carbon, lithium metal, or a combination of any two or more thereof; a separator; and an electrolyte including a lithium sulfonylimide salt, a dicarbonyl solvent, and a fluorinated ether solvent.

Abstract: An electrochemical device includes a cathode including elemental selenium, elemental sulfur, or selenium-sulfur containing composite; a negative electrode; a separator; and an electrolyte including a poly(alkyleneoxide) siloxane; and a salt; wherein a concentration of the salt in the electrolyte is sufficient to minimize dissolution of polysulfides/polyselenides formed during cycling of the device.