Abstract: A disordered rocksalt (DRS) having improved characteristic has a cation comprised of lithium and one other metal and an anion comprised of oxygen and fluorine, and one or more of phosphorous, sulfur, and nitrogen. The substitution of one or more of P, S, and N on the oxygen anion site may realize improved cycle life of the battery and/or may be useful to make safer batteries.

Abstract: A cathode includes a disordered rocksalt phase material and a coating layer disposed on a surface of the disordered rocksalt phase material. The coating layer may include one or more of an oxide, a phosphate, a phosphide, or a fluoride.

Abstract: A method for forming a cathode includes milling a suspension of precursors via a micromedia mill to form a mixture of primary particles in the suspension. The precursors include one or more metal compounds. The method includes spray drying the suspension after the milling to form secondary particles. The secondary particles are agglomerations of the primary particles. The method also includes annealing the secondary particles to form a disordered rocksalt powder.

Abstract: A cathode includes a disordered rocksalt phase material and a coating layer disposed on a surface of the disordered rocksalt phase material. The coating layer may include one or more of an oxide, a phosphate, a phosphide, or a fluoride.

Abstract: A composite solid state electrolyte comprises a polymer electrolyte material, a ceramic ion conductor, and a functionalized coupling agent selected to be compatible with the ceramic ion conductor and the bulk polymer compound. The polymer electrolyte material comprises a bulk polymer compound and a lithium salt. The functionalized coupling agent has a backbone that is structurally similar to the bulk polymer compound.

Abstract: A method for forming a cathode includes milling a suspension of precursors via a micromedia mill to form a mixture of primary particles in the suspension. The precursors include one or more metal compounds. The method includes spray drying the suspension after the milling to form secondary particles. The secondary particles are agglomerations of the primary particles. The method also includes annealing the secondary particles to form a disordered rocksalt powder.

Abstract: Described herein are additives for use in electrolytes that provide a number of desirable characteristics when implemented within batteries, such as high capacity retention during battery cycling at high temperatures. In some embodiments, a high voltage electrolyte includes a base electrolyte and one or more vinylsilane or fluorosilane additives, which impart these desirable performance characteristics.

Abstract: Described herein are additives for use in electrolytes that provide a number of desirable characteristics when implemented within batteries, such as high capacity retention during battery cycling at high temperatures. In some embodiments, a high voltage electrolyte includes a base electrolyte and one or more polymer additives, which impart these desirable performance characteristics. The polymer additives can be homopolymers or copolymers.

Abstract: Described herein are additives for use in electrolytes that provide a number of desirable characteristics when implemented within batteries, such as high capacity retention during battery cycling at high temperatures. In some embodiments, a high temperature electrolyte includes a base electrolyte and one or more polymer additives, which impart these desirable performance characteristics.

Abstract: An electrode includes a material represented by Li1-xMxCoO2-d where 0<x?0.2 and 0?d?0.2. The variable M includes a metal selected from the group consisting of transition metals, Group I elements, and Group II elements.

Abstract: Electrolyte formulations including a high salt concentration. The electrolyte formulation includes an organic solvent and a lithium salt, wherein the lithium salt is mixed with the organic solvent at a concentration of at least 20 Mole %, or at least 40 Mole %, or at least 50 Mole %. The organic solvent includes N-methyl-2-pyrrolidone, butylene carbonate, butyl propionate, pentyl acetate, ?-caprolactone, propylene glycol sulfite, ethyl methyl sulfone, butyl sulfoxide or combinations thereof. The lithium salt includes lithium bis(trifluoromethane sulfonyl) imide, lithium tetrafluoroborate, or lithium hexafluorophosphate.

Abstract: Additives to electrolytes that enable the formation of comparatively more robust SEI films on silicon anodes. The SEI films in these embodiments are seen to be more robust in part because the batteries containing these materials have higher coulombic efficiency and longer cycle life than comparable batteries without such additives.

Abstract: Electrolyte solutions including additives or combinations of additives that provide low temperature performance and high temperature stability in lithium ion battery cells.

Abstract: A solid-state electrolyte including an ion-conducting inorganic material represented by the formula Li1+yZr2?xMex(PO4)3 where 2>x>0, 0.2>y>?0.2, and Me is at least one element from Group 14, Group 6, Group 5, or combinations thereof.

Abstract: Electrolyte solutions including additives or combinations of additives that provide low temperature performance and high temperature stability in lithium ion battery cells.

Abstract: An electrode formed from a material represented by Li1-xMxCo1-yM?yO2-d where 0<x?0.2, 0?y<1, and 0<d?0.2. M and M? each independently comprises a metal selected from the group consisting of transition metals, Group I elements, and Group II elements.

Abstract: Additives to electrolytes that enable the formation of comparatively more robust SEI films on silicon anodes. The SEI films in these embodiments are seen to be more robust in part because the batteries containing these materials have higher coulombic efficiency and longer cycle life than comparable batteries without such additives.

Abstract: A battery having an anode, a soft-solid electrolyte, and a cathode. The soft-solid electrolyte includes a polymer soft-solid material formed from polymer combined with a solvent such as butylene carbonate, butyl sulfoxide, n-methyl-2-pyrrolidone, or ?-caprolactone.

Abstract: A battery including an anode, a cathode, a separator, and a liquid electrolyte including a lithium salt, a non-aqueous solvent, and an additive compound including a functionalized matrix having a polymer or copolymer or silica. The cathode material can be an NMC or LCO material. The electrode formed from the cathode or anode material can include a matrix additive. The matrix additive can be adhered to the separator or other inert component of the battery.

Abstract: An electrode formulation including a polymer, which can be ion-conducting or non-conducting; an ion-conducting inorganic material; a lithium salt; and optionally an additive salt.