The present invention provides a lithium metal powder protected by a substantially continuous layer of a polymer. Such a substantially continuous polymer layer provides improved protection such as compared to typical CO.sub.2-passivation.

The present invention provides a lithium metal powder protected by a substantially continuous layer of a polymer. Such a substantially continuous polymer layer provides improved protection such as compared to typical CO.sub.2-passivation.

Some variations provide a method of making a nanofunctionalized metal powder, comprising: providing metal particles containing metals selected from aluminum, iron, nickel, copper, titanium, magnesium, zinc, silicon, lithium, silver, chromium, manganese, vanadium, bismuth, gallium, or lead; providing nanoparticles selected from zirconium, tantalum, niobium, or titanium; disposing the nanoparticles onto surfaces of the metal particles, in the presence of mixing media, thereby generating nanofunctionalized metal particles; and isolating and recovering the nanofunctionalized metal particles as a nanofunctionalized metal powder. Some variations provide a composition comprising a nanofunctionalized metal powder, the composition comprising metal particles and nanoparticles containing one or more elements selected from the group consisting of zirconium, tantalum, niobium, titanium, and oxides, nitrides, hydrides, carbides, or borides thereof, or combinations of the foregoing.

Some variations provide a method of making a nanofunctionalized metal powder, comprising: providing metal particles containing metals selected from aluminum, iron, nickel, copper, titanium, magnesium, zinc, silicon, lithium, silver, chromium, manganese, vanadium, bismuth, gallium, or lead; providing nanoparticles selected from zirconium, tantalum, niobium, or titanium; disposing the nanoparticles onto surfaces of the metal particles, in the presence of mixing media, thereby generating nanofunctionalized metal particles; and isolating and recovering the nanofunctionalized metal particles as a nanofunctionalized metal powder. Some variations provide a composition comprising a nanofunctionalized metal powder, the composition comprising metal particles and nanoparticles containing one or more elements selected from the group consisting of zirconium, tantalum, niobium, titanium, and oxides, nitrides, hydrides, carbides, or borides thereof, or combinations of the foregoing.

Disclosed are: a method capable of preparing, in large-scaled quantity, nonspherical/asymmetric fine particles in which the physical factors (for example, size, shape, structure, etc.) of a fine wire (for example, glass-coated metal microwires) are controlled, through a convergence of nano technology (NT) and laser machining technology; and a use thereof applicable to various fields including bioassay and security.

Disclosed are: a method capable of preparing, in large-scaled quantity, nonspherical/asymmetric fine particles in which the physical factors (for example, size, shape, structure, etc.) of a fine wire (for example, glass-coated metal microwires) are controlled, through a convergence of nano technology (NT) and laser machining technology; and a use thereof applicable to various fields including bioassay and security.

Disclosed are: a method capable of preparing, in large-scaled quantity, nonspherical/asymmetric fine particles in which the physical factors (for example, size, shape, structure, etc.) of a fine wire (for example, glass-coated metal microwires) are controlled, through a convergence of nano technology (NT) and laser machining technology; and a use thereof applicable to various fields including bioassay and security.

The present invention provides a method for producing an alloy powder, and an alloy powder, a paste, and a capacitor prepared by the method, wherein the method can obtain particles with a shape more similar to a spherical shape; the solidified particles form a denser surface layer after quenching; the chemically passivated surface layer is physically compacted by impact to form a dense protective layer. The high-stability alloy powder particles have a more stable chemical property and good dispersibility.

The present invention provides a method for producing an alloy powder, and an alloy powder, a paste, and a capacitor prepared by the method, wherein the method can obtain particles with a shape more similar to a spherical shape; the solidified particles form a denser surface layer after quenching; the chemically passivated surface layer is physically compacted by impact to form a dense protective layer. The high-stability alloy powder particles have a more stable chemical property and good dispersibility.

A method for synthesis of iron-based nanoparticles is disclosed. The method includes mixing, an ascorbic acid solution with a citric acid solution to form a mixture. The mixture includes 20 mL of 0.1 M ascorbic acid solution and 20 mL of 1 M citric acid solution. The method also includes adding, a plurality of iron salts nitrate nonahydrate solution to ascorbic acid and citric acid mixture then stirring, the mixture using a magnetic stirrer and adding 8 ml of 0.005 M of Sodium Hexachloroplatinate Hexahydrate solution to the mixture. Further, the method includes adding a Sodium tetra hydrido borate to the mixture resulting in a black coloured solution along with effervescence and holding, the mixture undisturbed after the effervescence stops to obtain a green coloured solution. Furthermore, the method includes decanting, the green coloured solution, stirring at room temperature and obtaining, a plurality of iron nanoparticles.