Abstract: Particular embodiments may provide an anode material, comprising a compound of formula Li2—X—Y, wherein: X and Y are each independently a metal atom or a metalloid atom; the anode material has a discharge potential of less than about 0.4 V vs. Li/Li+; and the molar ratio of Li:X:Y is 2:1:1.

Abstract: Particular embodiments may provide interfacial materials for a solid-state electrolyte interface. In some embodiments, the solid-state electrolyte is argyrodite-based. In some embodiments, the interfacial material may comprise a binary halide, a ternary halide, a binary sulfide, a ternary sulfide, or a combination thereof. In some embodiments, the interfacial material may be disposed at the interface of the anode and the solid-state electrolyte and/or the interface of the cathode and the solid-state electrolyte.

Abstract: Particular embodiments may provide interfacial materials for a solid-state electrolyte interface. In some embodiments, the solid-state electrolyte is argyrodite-based. In some embodiments, the interfacial material may comprise a binary halide, a ternary halide, a binary sulfide, a ternary sulfide, or a combination thereof. In some embodiments, the interfacial material may be disposed at the interface of the anode and the solid-state electrolyte and/or the interface of the cathode and the solid-state electrolyte.

Abstract: Aspects of the disclosure relate to electrode active materials for use in battery cells that include a lithium metal phosphate core having a more ionically conductive layer thereon. The layer of the ionic conducting material advantageously can increase lithium ion conduction of the active material by at least one order of magnitude relative to the core material alone. As such, electrodes may be fabricated with lower areal densities resulting in battery cells that have such electrodes with higher charge rates and potentially smaller physical dimensions.

Abstract: Aspects of the disclosure relate to solid state electrolytes which include a composition of Li6PS5Cl having a dopant substituted, in part, for phosphorus (P-site dopant) and an excess molar amount of Cl (i.e., doped, off-stoichiometric compositions). The P-site dopant can be selected among Groups 4, 5, 14, or 15 of the periodic table of elements and has an ionic radius greater than phosphorus (P). Such solid state electrolytes can be used in all solid-state batteries and configured for use in electric vehicles.

Abstract: Provided herein is an apparatus. The apparatus can include a sorbent to dispose in an electric vehicle. The electric vehicle can include a battery cell. The sorbent can be configured to remove hydrogen sulfide gas from the electric vehicle. The hydrogen sulfide gas can be generated by a component of the battery cell.

Abstract: An electrode active material includes a dopant (M2) and a lithium iron phosphate host material, where the electrode active material is represented as LiM2xFe1?xPO4; M2 is a transition metal or main group metal; x is 0.01 to 0.15; the electrode active material exhibits an increased ionic conductivity compared to a lithium iron phosphate (LiFePO4) without the dopant; and the electrode active material has a particle size distribution characterized by a D50 greater than or equal to 1 ?m.

Abstract: An electrochemical cell includes a solid-state electrolyte; an anode; and a lithium polyanionic oxide; wherein the lithium polyanionic oxide is at least partially deposited on a surface of the anode.

Abstract: An electrode active material includes a dopant (M2) and a lithium manganese iron phosphate host material represented as LiM2xMnyFe1-x-yPO4, wherein the dopant is a transition metal or main group metal, and the electrode active material exhibits an increased ionic conductivity compared to a lithium manganese iron phosphate (LiMnyFe1-yPO4) without the dopant, wherein x is 0.01 to 0.15, and y is 0.30 to 0.85.

Abstract: A cathode active material comprising: a nickel-rich lithium transition metal oxide; a first coating material on a surface of the nickel-rich lithium transition metal oxide; and a second coating material comprising a lithium metal oxide; wherein the second coating material overcoats the first coating material, fills in voids of the first coating material on the surface of the nickel-rich lithium transition metal oxide, or both overcoats the first coating material and fills in voids of the first coating material on the surface of the nickel-rich lithium transition metal oxide, and the second coating material is different from the first coating material and the nickel-rich lithium transition metal oxide.

Abstract: An electrochemical cell includes a solid-state electrolyte, an anode, and an interfacial layer between the solid-state electrolyte and the anode, wherein the interfacial layer includes a lithium metal sulfide.