A heat generating device includes: a sealed container; a tubular body provided in a hollow portion of the sealed container; a heat generating element provided on an outer surface of the tubular body and configured to generate heat by occluding and discharging hydrogen supplied to the hollow portion; and a flow path formed by an inner surface of the tubular body and through which configured to allow a fluid that exchanges heat with the heat generating element to flow. The heat generating element includes a base made of a hydrogen storage metal, and a multilayer film provided on the base. The multilayer film has a first layer made of a hydrogen storage metal and having a thickness of less than 1000 nm, and a second layer made of a hydrogen storage metal, which is different from that of the first layer, and having a thickness of less than 1000 nm.

Provided is a method for producing magnesium hydride, the method including a plasma treatment step of exposing a raw material mixture of at least one magnesium-based raw material selected from the group consisting of magnesium, magnesium hydroxide, and magnesium oxide and magnesium hydride to hydrogen plasma.

A propulsion system is provided and includes a solid hydride storage unit from which gaseous hydrogen fuel is drawn, an engine comprising a combustion chamber and a piping system to draw the gaseous hydrogen fuel from the solid hydride storage unit, the piping system being interposed between the solid hydride storage unit and the combustion chamber. The combustion chamber is receptive of the gaseous hydrogen fuel drawn from the solid hydride storage unit by the piping system and is configured to combust the gaseous hydrogen fuel to drive an operation of the engine.

A system for storing solid state hydrogen includes: a solid state hydrogen storage pellet including a magnetic material and storing solid state hydrogen therein; an inner container surrounding the solid state hydrogen storage pellet; and a coil surrounding the inner container, wherein when current is supplied to the coil, the current reacts with the magnetic material included in the solid state hydrogen storage pellet to form an induction magnetic field, thereby heating the solid state hydrogen storage pellet.

A propulsion system is provided and includes a solid hydride storage unit from which gaseous hydrogen fuel is drawn, an engine comprising a combustion chamber and a piping system to draw the gaseous hydrogen fuel from the solid hydride storage unit, the piping system being interposed between the solid hydride storage unit and the combustion chamber. The combustion chamber is receptive of the gaseous hydrogen fuel drawn from the solid hydride storage unit by the piping system and is configured to combust the gaseous hydrogen fuel to drive an operation of the engine.

A hydrogen storage device (100A) comprises: a pressure vessel (230A), having a first fluid inlet (210A) and/or a first fluid outlet (220A), having therein a thermally conducting network (240A) optionally thermally coupled to a first heater and/or a first cooler; wherein the pressure vessel (230A) is arranged to receive therein a hydrogen storage material in thermal contact, at least in part, with the thermally conducting network (240A); wherein the thermally conducting network (240A) preferably has a lattice geometry, a gyroidal geometry and/or a fractal geometry in two and/or three dimensions, comprising a plurality of nodes, having thermally conducting arms therebetween, with voids between the arms; and wherein the thermally conducting network (240A) comprises fluidically interconnected passageways therein, for example within the arms and/or the nodes thereof, for flow therethough of a fluid.

The invention relates to a metal hydride hydrogen storage and supply arrangement integrated for use in a fuel cell utility vehicle. The storage arrangement includes a plurality of metal hydride containers suitable to be filled with a metal hydride material, the containers being connectable in parallel to a gas manifold; heat transfer means located between the metal hydride containers; and a filler body located in a space between the metal hydride containers and the heat transfer means.

A composition for hydrogen (H.sub.2) storage and generation including lithium aluminum hydride (LAIN is provided. The composition includes a mixture of LiAlH.sub.4 and a catalytic metal additive designed to tailor the kinetics of hydrogen release. The LiAlH.sub.4 and catalytic metal additive and are gently mixed together in order to physically disperse the LiAlH.sub.4 and catalyst powders without causing a detrimental chemical interaction. The hydrogen capacity of the composition is substantially not reduced or decreased (e.g., undergoes less than about 5% reduction) during the mixing process.

Some embodiments described herein provide for methods for synthesizing magnesium borohydride from hydrogenation of magnesium boride at moderate temperature and pressure in the presence of a modifier. The modifier may be in form of hydrides, liquid hydrogen carriers, ammonia borane, metallic species, croconate anion based materials, ethers, amines or imines, metal carbides, borides, graphene, arenes, magnesium, aluminum, calcium or ionic liquids. Some embodiments provide for charging magnesium boride in presence of a modifier at high pressure hydrogen while simultaneously heating the material. The modification in some instances may lead to an improved magnesium boride product with enhanced properties for application in other hydrogen storage systems.

A system and a method for reduction or elimination of environmentally harmful or “greenhouse” gases in situations in which gaseous hydrocarbons are flared or vented from an oil and gas well are disclosed. The system configures to inject a chemically reactive, or dispersive, or reactive and dispersive atomized mist into a gas flow line leading to a flare stack. The mist reacts with the gas in the flow line to convert methane to hydrogen and carbon monoxide and to reduce other harmful gases, facilitating a clean-burning, compact flare of blue color due to the presence of primarily hydrogen, some carbon monoxide, and a small amount of residual methane. The hydrogen and carbon monoxide may be captured and stored before reaching the ignition point at the top of the flare stack.