An apparatus for increasing the bulk density of metal powder may include a sealed chamber, a nozzle, and a target. The sealed chamber may include an inert environment. The nozzle may be coupled to an inert gas source and may be configured to introduce raw metal powder into a flow of the inert gas for discharge as a cold spray mixture of the raw metal powder and the inert gas into the chamber. The target may be housed within the sealed chamber and may be configured to receive an impact of the cold spray mixture. The nozzle and the target may be configured to flatten the raw metal particles into flattened metal particles in response to the cold spray mixture impacting the target.

A lithium-ion battery electrode and a method for its fabrication are provided. The electrode comprises a current collector and a solvent-free electrode agglomeration of lithium organic compound, active material powder, and binder mechanically adhered to the current collector such that the electrode is resistant to solid electrolyte interphase formation on a surface of the electrode during cycling of the battery.

A lithium-ion battery electrode and a method for its fabrication are provided. The electrode comprises a current collector and a solvent-free electrode agglomeration of lithium organic compound, active material powder, and binder mechanically adhered to the current collector such that the electrode is resistant to solid electrolyte interphase formation on a surface of the electrode during cycling of the battery.

A method utilizes ball milling for coating a metallic alloy on a target surface. The method includes placing the target surface in a ball mill device. The method includes milling a mixture of powder with exposure to the target surface. The method includes forming an alloy comprising a first metal and a second metal. The method includes coating the alloy on the target surface of the object via a mechanical force of ball milling.

A method utilizes ball milling for coating a metallic alloy on a target surface. The method includes placing the target surface in a ball mill device. The method includes milling a mixture of powder with exposure to the target surface. The method includes forming an alloy comprising a first metal and a second metal. The method includes coating the alloy on the target surface of the object via a mechanical force of ball milling.

Metal nanoparticles may be grown under conditions that promote formation of platelet nanoparticles having a surfactant coating thereon. Such conditions may include slow metal salt reduction and slow cooling following metal nanoparticle formation. The platelet nanoparticles have a fusion temperature significantly below the melting point of the corresponding bulk metal and form robust structures upon undergoing consolidation with one another. Compositions may comprise a plurality of metal nanoparticles having a surfactant coating thereon, in which at least about 20% of the metal nanoparticles are platelet nanoparticles and the surfactant coating comprises at least one surfactant. The compositions may further comprise varying amounts of substantially spherical metal nanoparticles. The metal nanoparticles may be formulated into nanoparticle paste compositions, sprayable formulations, and inks that may aid in dispensation and consolidation of the metal nanoparticles.

Metal nanoparticles may be grown under conditions that promote formation of platelet nanoparticles having a surfactant coating thereon. Such conditions may include slow metal salt reduction and slow cooling following metal nanoparticle formation. The platelet nanoparticles have a fusion temperature significantly below the melting point of the corresponding bulk metal and form robust structures upon undergoing consolidation with one another. Compositions may comprise a plurality of metal nanoparticles having a surfactant coating thereon, in which at least about 20% of the metal nanoparticles are platelet nanoparticles and the surfactant coating comprises at least one surfactant. The compositions may further comprise varying amounts of substantially spherical metal nanoparticles. The metal nanoparticles may be formulated into nanoparticle paste compositions, sprayable formulations, and inks that may aid in dispensation and consolidation of the metal nanoparticles.

Examples relate to a device including an application unit having a first roller and second roller forming, in a nip thereof, a first roller gap through which powdered material can be conveyed to form a dry film. A counter-pressure roller together with the second roller, or a further roller downstream from the second roller, forms a second roller gap. A substrate path leads through the second roller gap for guiding a carrier substrate web through the second gap for applying the dry film thereto. At least one drawing device including a drive means for adjusting the first or second roller gap between two adjacent rollers that are movable relative to one another is provided on each frame side, enabling the two rollers to be moved toward one another in an adjustment direction, or be tensioned, and to be moved away from one another again, or at least be relaxed.

Examples relate to a device including an application unit having a first roller and second roller forming, in a nip thereof, a first roller gap through which powdered material can be conveyed to form a dry film. A counter-pressure roller together with the second roller, or a further roller downstream from the second roller, forms a second roller gap. A substrate path leads through the second roller gap for guiding a carrier substrate web through the second gap for applying the dry film thereto. At least one drawing device including a drive means for adjusting the first or second roller gap between two adjacent rollers that are movable relative to one another is provided on each frame side, enabling the two rollers to be moved toward one another in an adjustment direction, or be tensioned, and to be moved away from one another again, or at least be relaxed.

A method for producing a conductive base material, the method includes: (1) a laminating step of forming a conductive particle-containing layer on a surface of a base material using a conductive composition containing conductive particles, to obtain a laminate including a base material layer and the conductive particle-containing layer; (2) an impregnation step of impregnating a component (X) capable of removing an oxide film on a surface of the conductive particles into the conductive particle-containing layer; and (3) a conductive film formation step of at least pressurizing the conductive particle-containing layer impregnated with the component (X) to form a conductive film.