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: A system for assessment of dimensional variation of an electro-chemical battery cell during charge/discharge cycling, including a test fixture configured to position thereon a battery cell. The test fixture includes a pressure plate configured to apply a force to the battery cell. The test fixture also includes a reaction plate disposed parallel to the pressure plate and configured to sandwich the battery cell between the reaction plate and the pressure plate. The test fixture additionally includes an elastic member assembly configured to facilitate adjustment of the force applied to the battery cell. The system additionally includes an electronic hardware device configured to regulate an electrical current applied to the battery cell. The system further includes a contact displacement sensor configured to detect change in the battery thickness.

Abstract: A battery testing apparatus includes a battery cycler configured to position a battery cell in a cell pocket defined by a baseplate. The apparatus additionally includes a thermal control device configured to regulate thermal energy in the cell pocket, a baseplate thermistor for detecting baseplate temperature, and thermal control device thermistor for detecting thermal control device temperature. The apparatus also includes a printed circuit board (PCB) in electric communication with the thermal control device thermistor. An electronic microcontroller, in electric communication with the baseplate thermistor and the PCB, is configured to regulate operation of the thermal control device based on data from the baseplate thermistor and the thermal control device thermistor.

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: 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 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: Described herein are materials for use in electrolytes that provide a number of desirable characteristics when implemented within batteries, such as high stability during battery cycling up to high temperatures, high voltages, high discharge capacity, high coulombic efficiency, and excellent retention of discharge capacity and coulombic efficiency over several cycles of charging and discharging. In some embodiments, a high voltage electrolyte includes a base electrolyte and a set of additive compounds, which impart these desirable performance characteristics.

Abstract: A solid-state electrolyte includes a lithium salt, a lithium ion-conducting inorganic material, a polymer, and a coupling agent. The coupling agent bonds the lithium ion-conducting inorganic material to the polymer.

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 composition for forming an electrode. The composition includes a hybrid active material compound doped with a dopant. The hybrid active material comprises the reaction product of a metal fluoride compound and a metal complex. A method of making the composition is included.

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. The additives preferably contain a nitrate group.

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: A solid-state electrolyte including a polymer, which can be ion-conducting or non-conducting; an ion-conducting inorganic material; a lithium salt; an additive salt and optionally a coupling agent.