A palladium hydride nanomaterial includes nanostructures having a chemical composition represented by the formula: M.sub.y-Pd.sub.xH.sub.z, where M is at least one metal different from palladium; x has a non-zero value in the range of 0 to 5; y has a value in the range of 0 to 5; and z has a non-zero value in the range of 0 to 5.

A palladium hydride nanomaterial includes nanostructures having a chemical composition represented by the formula: M.sub.y-Pd.sub.xH.sub.z, where M is at least one metal different from palladium; x has a non-zero value in the range of 0 to 5; y has a value in the range of 0 to 5; and z has a non-zero value in the range of 0 to 5.

A nanoparticle of a decomposition product of a transition metal aluminum hydride compound, a transition metal borohydride compound, or a transition metal gallium hydride compound. A process of: reacting a transition metal salt with an aluminum hydride compound, a borohydride compound, or a gallium hydride compound to produce one or more of the nanoparticles. The reaction occurs in solution while being sonicated at a temperature at which the metal hydride compound decomposes. A process of: reacting a nanoparticle with a compound containing at least two hydroxyl groups to form a coating having multi-dentate metal-alkoxides.

Provided are a CaMg.sub.2-based alloy hydride material for hydrolysis production of hydrogen, a preparation method therefor and a use thereof. The material has a general formula of CaMg.sub.xM.sub.yH.sub.z, wherein M is Ni, Co or Fe, 1.5x<2.0, 0<y0.5, and 3z<6. The preparation method for the material comprises the following steps: (1) stacking three pure metal block materials in a crucible, wherein a metal block material M is placed at the top; (2) installing the crucible in a high-frequency induction melting furnace, evacuating and introducing an argon gas; (3) starting the high-frequency induction melting furnace to heat at a low power first, then increasing the power to uniformly fuse same; and thereafter cooling with the furnace to obtain an alloy ingot, and hammer-milling to obtain a hydrogen storage alloy based on CaMg.sub.2; and (4) hydrogenating the hammer-milled hydrogen storage alloy to obtain the material for hydrolysis production of hydrogen. The preparation method is simple and low in cost. The material can absorb hydrogen at normal temperature with a good hydrogen absorption performance. The prepared hydrogen is pure, and can be directly introduced into and used in a hydrogen fuel battery.

Provided are a CaMg.sub.2-based alloy hydride material for hydrolysis production of hydrogen, a preparation method therefor and a use thereof. The material has a general formula of CaMg.sub.xM.sub.yH.sub.z, wherein M is Ni, Co or Fe, 1.5x<2.0, 0<y0.5, and 3z<6. The preparation method for the material comprises the following steps: (1) stacking three pure metal block materials in a crucible, wherein a metal block material M is placed at the top; (2) installing the crucible in a high-frequency induction melting furnace, evacuating and introducing an argon gas; (3) starting the high-frequency induction melting furnace to heat at a low power first, then increasing the power to uniformly fuse same; and thereafter cooling with the furnace to obtain an alloy ingot, and hammer-milling to obtain a hydrogen storage alloy based on CaMg.sub.2; and (4) hydrogenating the hammer-milled hydrogen storage alloy to obtain the material for hydrolysis production of hydrogen. The preparation method is simple and low in cost. The material can absorb hydrogen at normal temperature with a good hydrogen absorption performance. The prepared hydrogen is pure, and can be directly introduced into and used in a hydrogen fuel battery.

A nickel-doped Mg nanocrystals encapsulated by molecular-sieving reduced graphene oxide (rGO) layers is disclosed. Dual-channel doping, which combines external (rGO strain) and internal (Ni doping) mechanisms, efficiently promotes both hydriding and dehydriding processes of Mg nanocrystals, simultaneously improving both the kinetic and thermodynamic properties of the material. The composite achieves both high hydrogen storage capacity and excellent kinetics while maintaining robustness. The realization of three complementary functional components in one material-environmentally friendly and earth-abundant Mg for storage, Ni dopants for catalysis, and rGO layers for encapsulation-breaks new ground in metal hydrides and makes solid-state materials viable candidates for hydrogen-fueled applications.

A nickel-doped Mg nanocrystals encapsulated by molecular-sieving reduced graphene oxide (rGO) layers is disclosed. Dual-channel doping, which combines external (rGO strain) and internal (Ni doping) mechanisms, efficiently promotes both hydriding and dehydriding processes of Mg nanocrystals, simultaneously improving both the kinetic and thermodynamic properties of the material. The composite achieves both high hydrogen storage capacity and excellent kinetics while maintaining robustness. The realization of three complementary functional components in one material-environmentally friendly and earth-abundant Mg for storage, Ni dopants for catalysis, and rGO layers for encapsulation-breaks new ground in metal hydrides and makes solid-state materials viable candidates for hydrogen-fueled applications.

Reinforcing bars include load transfer connectors. A link plate includes openings that mate with the load transfer connectors to overlie the splice between reinforcing bars being spliced. A cover plate may be fastened over the link plate.

Reinforcing bars include load transfer connectors. A link plate includes openings that mate with the load transfer connectors to overlie the splice between reinforcing bars being spliced. A cover plate may be fastened over the link plate.

A gas atomization apparatus is disclosed for producing high purity fine refractory compound powders. After the system reaches high vacuum, a first stage inert atomizing gas breaks superheated metal melt into droplets and a second stage reactive atomizing gas breaks the droplets further into ultrafine droplets while reacts with them to form refractory compound powders. The first stage atomizing gas is inert gas able to break up melt into droplets and prevent crust formation on the nozzle front. A reaction time enhancer is arranged at bottom of reaction chamber to furnish a reactive gas flow in a reverse direction of the falling droplets and powders. Under the reverse gas flow, the falling droplets and powders change moving direction and travel longer distance in reaction chamber to increase reaction time. This apparatus can produce refractory powders with ultrahigh purity and uniform powder size while maintain high process energy efficiency.