Abstract: Functionalized polymeric binders for electrolyte and electrode compositions include a polymer having a polymer backbone and functional groups. In some embodiments, a polymer includes a non-polar polymer backbone and a functional group that is 0.1 to 5 wt % of the polymer. In some embodiments, a polymer includes a polar backbone and a functional group that is 0.1 to 50% weight percent of the polymer. Also described are composites for electrolyte separators and electrodes that include argyrodite ion conductors and polar polymers.

Abstract: Provided herein are compositions of solid-state ionically conductive composite materials that include particles of an inorganic phase in a matrix of an organic phase having a positive thermal coefficient of expansion. When the temperature of the composition is below a cutoff temperature Tc, the composition is ionically conductive and may be used as an electrolyte. As the temperature increases above Tc, the organic phase expands and reduces the ionic conductivity of the composition.

Abstract: Provided herein are composite electrolytes that include inorganic conductors and polar polymers. By providing the polar polymers as structures such as microspheres in a suspension in a non-polar solvent, the polar polymers can be used as binders in composites that include sulfide electrolytes. The resulting composites have high room temperature conductivities and good mechanical properties. Also provided are composites that include inorganic conductors and other polymers that are insoluble in non-polar solvents. Also provided are composites that include polar polymers and lithium argyrodite conductors and methods of processing the composites that result in high conductivity retention. Also provided are methods of forming composite electrolytes using suspensions of polymer microstructures in a processing solvent and the resulting composite electrolytes.

Abstract: Solid-state lithium-ion cells described herein can operate at pressures. In some embodiments, the solid-state lithium-ion cells undergo little or no volume change during cycling. A conditioning process that that significantly improves the performance of a cell at reduced pressures can involve cycling the cell at high pressure.

Abstract: Provided herein are multilayer solid-state lithium ion batteries and methods of fabrication. In some embodiments, units of preformed cell elements and a current collector (of either the anode or cathode) are stacked. The preformed cell element includes a double-sided electrode, with separator/electrode on both sides of the double-sided electrode. The double-sided electrode may be an anode or a cathode. During the stacking process, the preformed cell elements are laminated to a cathode current collector or an anode current collector, as appropriate.

Abstract: Functionalized polymeric binders for electrolyte and electrode compositions include a polymer having a polymer backbone and functional groups. In some embodiments, a polymer includes a non-polar polymer backbone and a functional group that is 0.1 to 5 wt % of the polymer. In some embodiments, a polymer includes a polar backbone and a functional group that is 0.1 to 50% weight percent of the polymer. Also described are composites for electrolyte separators and electrodes that include argyrodite ion conductors and polar polymers.

Abstract: Provided herein are multilayer solid-state lithium ion batteries and methods of fabrication. In some embodiments, units of preformed cell elements and a current collector (of either the anode or cathode) are stacked. The preformed cell element includes a double-sided electrode, with separator/electrode on both sides of the double-sided electrode. The double-sided electrode may be an anode or a cathode. During the stacking process, the preformed cell elements are laminated to a cathode current collector or an anode current collector, as appropriate.

Abstract: Functionalized polymeric binders for electrolyte and electrode compositions include a polymer having a polymer backbone and functional groups. In some embodiments, a polymer includes a non-polar polymer backbone and a functional group that is 0.1 to 5 wt % of the polymer. In some embodiments, a polymer includes a polar backbone and a functional group that is 0.1 to 50% weight percent of the polymer. Also described are composites for electrolyte separators and electrodes that include argyrodite ion conductors and polar polymers.

Abstract: Functionalized polymeric binders for electrolyte and electrode compositions include a polymer having a polymer backbone and functional groups. In some embodiments, a polymer includes a non-polar polymer backbone and a functional group that is 0.1 to 5 wt % of the polymer. In some embodiments, a polymer includes a polar backbone and a functional group that is 0.1 to 50% weight percent of the polymer. Also described are composites for electrolyte separators and electrodes that include argyrodite ion conductors and polar polymers.

Abstract: Solid-state lithium-ion cells described herein can operate at pressures. In some embodiments, the solid-state lithium-ion cells undergo little or no volume change during cycling. A conditioning process that that significantly improves the performance of a cell at reduced pressures can involve cycling the cell at high pressure.

Abstract: Solid-state lithium-ion cells described herein can operate at pressures. In some embodiments, the solid-state lithium-ion cells undergo little or no volume change during cycling. A conditioning process that that significantly improves the performance of a cell at reduced pressures can involve cycling the cell at high pressure.

Abstract: Provided herein are composite materials that include an ionically conductive inorganic solid particulate phase and an organic polymer phase. The ionically conductive inorganic solid particular phase includes an alklai metal argyrodite.

Abstract: Provided herein are compositions of solid-state ionically conductive composite materials that include particles of an inorganic phase in a matrix of an organic phase having a positive thermal coefficient of expansion. When the temperature of the composition is below a cutoff temperature Tc, the composition is ionically conductive and may be used as an electrolyte. As the temperature increases above Tc, the organic phase expands and reduces the ionic conductivity of the composition.

Abstract: Provided herein are multilayer solid-state lithium ion batteries and methods of fabrication. In some embodiments, units of preformed cell elements and a current collector (of either the anode or cathode) are stacked. The preformed cell element includes a double-sided electrode, with separator/electrode on both sides of the double-sided electrode. The double-sided electrode may be an anode or a cathode. During the stacking process, the preformed cell elements are laminated to a cathode current collector or an anode current collector, as appropriate.

Abstract: Provided herein are composite electrolytes that include inorganic conductors and polar polymers. By providing the polar polymers as structures such as microspheres in a suspension in a non-polar solvent, the polar polymers can be used as binders in composites that include sulfide electrolytes. The resulting composites have high room temperature conductivities and good mechanical properties. Also provided are composites that include inorganic conductors and other polymers that are insoluble in non-polar solvents. Also provides methods of forming composite electrolytes using suspensions of polymer microstructures in a processing solvent and the resulting composite electrolytes.

Abstract: Provided herein are composite electrolytes that include inorganic conductors and polar polymers. By providing the polar polymers as structures such as microspheres in a suspension in a non-polar solvent, the polar polymers can be used as binders in composites that include sulfide electrolytes. The resulting composites have high room temperature conductivities and good mechanical properties. Also provided are composites that include inorganic conductors and other polymers that are insoluble in non-polar solvents. Also provided are composites that include polar polymers and lithium argyrodite conductors and methods of processing the composites that result in high conductivity retention. Also provided are methods of forming composite electrolytes using suspensions of polymer microstructures in a processing solvent and the resulting composite electrolytes.

Abstract: Functionalized polymeric binders for electrolyte and electrode compositions include a polymer having a polymer backbone and functional groups. In some embodiments, a polymer includes a non-polar polymer backbone and a functional group that is 0.1 to 5 wt % of the polymer. In some embodiments, a polymer includes a polar backbone and a functional group that is 0.1 to 50% weight percent of the polymer. Also described are composites for electrolyte separators and electrodes that include argyrodite ion conductors and polar polymers.

Abstract: Functionalized polymeric binders for electrolyte and electrode compositions include a polymer having a polymer backbone and functional groups. In some embodiments, a polymer includes a non-polar polymer backbone and a functional group that is 0.1 to 5 wt % of the polymer. In some embodiments, a polymer includes a polar backbone and a functional group that is 0.1 to 50% weight percent of the polymer. Also described are composites for electrolyte separators and electrodes that include argyrodite ion conductors and polar polymers.

Abstract: Provided herein are composite electrolytes that include inorganic conductors and polar polymers. By providing the polar polymers as structures such as microspheres in a suspension in a non-polar solvent, the polar polymers can be used as binders in composites that include sulfide electrolytes. The resulting composites have high room temperature conductivities and good mechanical properties. Also provided are composites that include inorganic conductors and other polymers that are insoluble in non-polar solvents. Also provides methods of forming composite electrolytes using suspensions of polymer microstructures in a processing solvent and the resulting composite electrolytes.

Abstract: Functionalized polymeric binders for electrolyte and electrode compositions include a polymer having a polymer backbone and functional groups. In some embodiments, a polymer includes a non-polar polymer backbone and a functional group that is 0.1 to 5 wt % of the polymer. In some embodiments, a polymer includes a polar backbone and a functional group that is 0.1 to 50% weight percent of the polymer. Also described are composites for electrolyte separators and electrodes that include argyrodite ion conductors and polar polymers.