Abstract: In one aspect of the disclosure, a method is presented. The method involves coating a conductive substrate with an electrode slurry of solvent, active material, binder, and additives to form a wet electrode. The wet electrode is injected with a column of miscible non-solvent fluid into a surface of the wet electrode to displace the electrode slurry around the column and initiate non-solvent-induced phase inversion of the binder in contact with the miscible non-solvent fluid such that the binder in contact with the miscible non-solvent fluid solidifies around the column into a solid-free channel at the surface of and into the wet electrode.

Abstract: In one aspect of the disclosure, a method is presented. The method involves coating a conductive substrate with an electrode slurry of solvent, active material, binder, and additives to form a wet electrode. The wet electrode is injected with a column of miscible non-solvent fluid into a surface of the wet electrode to displace the electrode slurry around the column and initiate non-solvent-induced phase inversion of the binder in contact with the miscible non-solvent fluid such that the binder in contact with the miscible non-solvent fluid solidifies around the column into a solid-free channel at the surface of and into the wet electrode.

Abstract: A battery electrode for solid-state battery cells and a method for its fabrication are provided. The electrode comprises two layers, an ion transport layer comprising a homogeneous mixture of lithium argyrodite and lithium ceramic coated nickel manganese cobalt oxide particles, and an electron transport layer with uncoated nickel manganese cobalt oxide particles. The electron transport layer may include lithium argyrodite particles in a specific ratio and may be sulfide-based.

Abstract: A solid electrolyte separator sheet for a solid-state lithium-ion battery is provided. The solid electrolyte separator sheet may comprise a membrane including solid electrolyte particles, an ion conducting polymer electrolyte binder, and a filament-type binder comprising chopped nanofibers. The ion conducting polymer electrolyte may include in situ formed, polyethylene-oxide-like polymer electrolyte.

Abstract: The present disclosure relates to a secondary solid-state battery. This battery includes a current collector, comprising a poly 3,4-ethylenedioxythiphene polystyrene sulfonate (PEDOT-PSS) layer, which is in direct areal contact with a negative electrode. The battery also includes a positive electrode and a solid electrolyte separator between the positive and negative electrodes. The PEDOT-PSS layer can compress and expand in response to the expansion and contraction of the negative electrode. In some embodiments, the current collector may include a carrier film onto which the PEDOT-PSS layer is coated. A cell stack of multiple assemblies further comprises the positive electrode, solid electrolyte separator, negative electrode, and current collector with some adjacent pairs separated by carbon fiber papers.

Abstract: The present disclosure relates to a secondary solid-state battery, with a current collector configuration that includes a metal foam sandwiched between two microporous carbon layers. The current collector directly interfaces with both the negative electrode and the solid electrolyte separator. Alternatively, the current collector can comprise an elastomer sandwiched between a pair of metal foil layers, enabling responsive expansion and contraction in accordance with the electrodes' changes during charge-discharge cycles. Another embodiment contemplates a carbon fiber paper current collector situated between two microporous layers.