Abstract: A method includes determining a total expansion value for a coin cell based on processing of first sensor data captured by a magnetic force dilatometry sensor. The first sensor data is representative of the coin cell during a cycling program of the coin cell with the coin cell held at a fixture. Based on processing of second sensor data captured by an imaging sensor, the method includes determining a reversible expansion value for the coin cell. The second sensor data is representative of the coin cell during the cycling program of the coin cell with the coin cell held at the fixture. Based on the total expansion value and the reversible expansion value, the method includes determining an irreversible expansion value for the coin cell.

Abstract: A method for manufacturing cathode active material includes providing a polycrystalline transition metal precursor; providing a lithium salt composition including a first lithium salt and a second lithium salt having a eutectic melting temperature; creating a first mixture including the polycrystalline transition metal precursor and the lithium salt composition; mixing the first mixture in a mixer to generate inter-frictional force to heat the lithium salt composition above the eutectic melting temperature and to generate a second mixture; and sintering the second mixture to form a spinel-coated single-crystal cathode active material.

Abstract: A positive electrode material including a layered lithium- and manganese-rich nickel oxide (LMR) doped with an alkali metal and/or an alkaline earth metal. The positive electrode material may be manufactured by preparing a mixture comprising a transition metal carbonate, a dopant metal carbonate, and a lithium source, and then calcining the mixture to form the alkali metal and/or alkaline earth metal-doped LMR.

Abstract: Aspects of the disclosure include the electrochemical deposition of a metal oxide coating on cathode active materials and resulting battery cells. An exemplary vehicle includes an electric motor and a battery pack electrically coupled to the electric motor. The battery pack includes a battery cell that includes an anode current collector, an anode active material layer in direct contact with a surface of the anode current collector, a cathode current collector, a cathode active material layer in direct contact with a surface of the cathode current collector, and a separator positioned between the anode active material layer and the cathode active material layer. The cathode active material layer includes cathode active materials having a metal oxide coating. The metal oxide coating is electrochemically deposited onto the cathode active materials.

Abstract: Lithium ion batteries and methods for synthesizing cathode active material are provided. A method for synthesizing a cathode active material includes heating a transition metal hydroxide precursor to form an oxide precursor having a spinel form; and reacting the oxide precursor with a lithium salt to form LiNixMnyO2; wherein 0.5?x?0.95 and 0.05?y?0.5.

Abstract: Systems, methods, and devices for producing coated electroactive-material particles are described. The coated electroactive-material particles may be produced by a spray-dry process including atomizing a non-aqueous solution that includes lithium niobium ethoxide and pristine cathode active material particles to produce an atomized solution, introducing the atomized solution into a drying chamber, and drying the atomized solution to produce lithium niobium oxide coated cathode active material particles. The atomizing is performed via an atomizer. The drying chamber has a gas flow to carry the atomized solution therethrough. The drying is performed via the gas flow within the drying chamber.

Abstract: A method for manufacturing a cathode electrode includes forming a composite cathode active material by providing a first cathode active material. The first cathode active material comprises a lithium- and manganese-rich (LMR) cathode active material. The method includes forming an outer layer including a second cathode active material on the first cathode active material to form a composite cathode active material. The second cathode active material comprises an NMX cathode active material including lithium, and nickel and manganese with a molar ratio in a range from 3/7 to 8/2.

Abstract: A battery cell includes A anode electrodes, C cathode electrodes, wherein each of the C cathode electrodes includes a cathode active material layer arranged on a cathode current collector, and S separators, where A, C, and S are integers greater than one. The cathode active material layer includes cathode active material including LMR cathode active material and NMX cathode active material.

Abstract: A positive electrode for a battery that cycles lithium ions includes a fluorinated lithium-rich and manganese-based oxide (LMR) material. The fluorinated LMR material has the formula: Li1+xMe1?xO2?yFy, wherein: Me is a transition metal selected from the group consisting of Co, Ni, Mn, Fe, Al, V, Mo, Nb, Zr, Zn, Mg, Cu, Ti, and W; Me includes, on an atomic basis, greater than or equal to 50% Mn; x is greater than 0 and less than or equal to 0.33; and y is greater than 0 and less than or equal to 0.1.

Abstract: A method for manufacturing cathode active material includes providing a polycrystalline transition metal precursor; providing a lithium salt composition including a first lithium salt and a second lithium salt having a eutectic melting temperature; creating a first mixture including the polycrystalline transition metal precursor and the lithium salt composition; mixing the first mixture in a mixer to generate inter-frictional force to heat the lithium salt composition above the eutectic melting temperature and to generate a second mixture; and sintering the second mixture to form a spinel-coated single-crystal cathode active material.

Abstract: A method for manufacturing a cathode electrode including a) dissolving one or more first organic isopropoxide precursors in a first solvent to form a mixture; b) adding particles of cathode active material to the mixture; c) heating and stirring the mixture to a first predetermined temperature for a first predetermined period to form a first metal oxide coating on the particles of the cathode active material; d) filtering the particles of the cathode active material from the mixture; and e) calcining the particles of the cathode active material at a second predetermined temperature for a second predetermined period.

Abstract: A cathode active particles for use in a cathode of a lithium ion battery comprising a core includes a lithium-manganese-rich oxide and a coating on the core, wherein the coating includes a lithium manganese spinel. The cathode active particle can be made by preparing a dispersion of particles comprising a lithium-manganese-rich metal oxide in an aqueous solution of a salt of a transition metal oxide. The dispersion is mixed, and heated to a temperature in a range of 60 to 125° C. The solids are separated from the dispersion, and calcined. The cathode active particles can be used in cathode and in a battery comprising such cathode.

Abstract: A battery that cycles lithium ions includes a positive electrode and an electrolyte infiltrating the positive electrode. The positive electrode includes an electroactive material comprising a lithium-and manganese-rich oxide. The electrolyte includes an organic solvent, an inorganic lithium salt, and a nitrile additive.

Abstract: A battery that cycles lithium ions includes a positive electrode and an electrolyte infiltrating the positive electrode. The positive electrode includes an electroactive material comprising a lithium-and manganese-rich oxide. The electrolyte includes an organic solvent, an inorganic lithium salt, and a functional additive comprising lithium fluoride (LiF), lithium phosphate (Li3PO4), or a combination thereof.

Abstract: A cathode active material layer for a cathode electrode of a battery cell, comprising particles of cathode active material including one or more materials selected from a group consisting of a lithium- and manganese-rich (LMR) material, lithium nickel manganese cobalt oxide (NMC), lithium nickel manganese cobalt aluminum oxide (NMCA), and lithium iron phosphate (LFP). A coating layer is formed on an outer surface of the particles of the cathode active material and including one or more transition metal oxides.

Abstract: A positive electrode material for an electrochemical cell that cycles lithium ions includes a high-valent doped layered lithium- and manganese-rich nickel oxide (HVD-LMR). The high-valent dopant is a transition metal element having five or more valence electrons. The HVD-LMR positive electrode material may be manufactured by a sol-gel method, wherein a precursor solution is prepared comprising a lithium salt, a manganese salt, a nickel salt, a compound comprising the high-valent dopant, and a chelating agent. The pH of the precursor solution is controlled or adjusted to form a gel comprising a liquid phase and a solid precipitate phase, and then the liquid phase from the solid precipitate phase to form a dried gel. The dried gel is heated in an oxygen-containing environment to form the HVD-LMR positive electrode material.

Abstract: A positive electrode material including a layered lithium- and manganese-rich nickel oxide (LMR) doped with an alkali metal and/or an alkaline earth metal. The positive electrode material may be manufactured by preparing a mixture comprising a transition metal carbonate, a dopant metal carbonate, and a lithium source, and then calcining the mixture to form the alkali metal and/or alkaline earth metal-doped LMR.