Disclosed is a fuel unit for a gas generator such as a hydrogen gas generator that can supply gas to a gas consuming system such as a fuel cell system. The fuel unit includes a housing containing a solid fuel composition and a heat producing material. The fuel composition contains gas releasing solid material that reacts to release gas when heated. The heat producing material reacts exothermically to produce heat. A plurality of quantities of the heat producing material are in thermal communication with corresponding portions of an unsegregated quantity the fuel composition such that, following initiation of a reaction of each quantity of the heat producing material, the quantity of heat producing material will heat the corresponding portion of the unsegregated quantity of the fuel composition, and the corresponding portion of the unsegregated quantity of the fuel composition will react to release a quantity of the gas.

A method and an apparatus for producing sodium borohydride that have excellent energy efficiency and production efficiency are provided. Using a production apparatus 20 comprising: a cylindrical reaction container 21; a cylindrical reaction portion 22 which is rotatably held in this reaction container 21 and in which sodium metaborate that is a raw material 1 and granular aluminum are housed together with a grinding medium 2; and a hydrogen introduction portion 23 for introducing hydrogen gas into the reaction portion 22 directly or via the reaction container 21, the sodium metaborate and the granular aluminum are reacted under a hydrogen atmosphere, while being rolled and ground with the grinding medium, to obtain sodium borohydride.

The present invention relates to a method for preparing a graphite powder composite supported by transition metal particles for storing hydrogen, and more specifically, to a method for preparing a graphite powder composite supported by transition metal particles having significantly improved hydrogen storage capacity, by means of introducing the transition metal particles having support capacity and particle diameters which are controlled, of transition metals such as nickel (Ni), palladium (Pd), platinum (Pt), and yttrium (Y), to an oxidized graphite powder that is provided with functionality through a chemical surface treatment.

Provided herein are the metalloborane compounds, MOF-metalloborane compositions, and hydrogen storage system used for high density hydrogen storage. The compounds and compositions may have the structure M.sub.2B.sub.6H.sub.6 or MOF-M.sub.2B.sub.6H.sub.6-dicarboxylic acid. Particularly the transition metal M may be titanium or scandium and the MOF may be MOF5. The hydrogen storage systems hydrogen absorbed to the metalloborane compounds or to the MOF-metalloborane compositions. Methods of storing hydrogen are provided comprising flowing or passing hydrogen gas for absorptive contact with the metalloborane compounds or to the MOF-metalloborane compositions. Also provided is a method for calculating the hydrogen storage capacity of a metalloborane is provided in which random sampling of the thermodynamic states of a two-system model of hydrogen in the presence of a metal organic framework-metalloborane crystal structure is used to calculate probability of hydrogen absorption.

The invention relates to a method for filling a tank (1) with a gas in gaseous phase in order to store said gas in solid phase, in which the gas is introduced into the tank (1) at either: a filling pressure (Pr) equal to the equilibrium pressure of a reactant product at a filling temperature plus times the difference between the saturation vapor pressure (PS) of the gas at the filling temperature (Tr) and the equilibrium pressure of the reactant product, being between 0.1 and 0.9; or a filling temperature (Tr) equal to the vaporization temperature of the gas at the filling pressure (Pr) plus times the difference between the equilibrium temperature (Te) of the reactant product at the filling pressure (Pr) and the vaporization temperature of the gas, being between 0.1 and 0.9.

A hydrogen storage material includes Mg(NH.sub.2).sub.2, LiH, and MgH.sub.2. A manufacturing method of a hydrogen storage material includes steps of manufacturing a mixture by mixing Mg(NH.sub.2).sub.2, LiH, and MgH.sub.2, and pulverizing the mixture.

Hydrogen foams may be used for placing and maintaining hydrogen in a subterranean location. For example, methods for introducing hydrogen to a subterranean location may include: placing a hydrogen foam in a subterranean location, in which the hydrogen foam comprises a continuous phase generated from a foamable composition comprising an aqueous fluid and a discontinuous phase comprising at least hydrogen gas; and maintaining the hydrogen foam in the subterranean location.

A method releases hydrogen by forming a second ionic liquid from a first ionic liquid by releasing hydrogen from the first ionic liquid by exposing the first ionic liquid to water and a catalyst. The first ionic liquid includes a cation and an anion including a borohydride. The release of the hydrogen forms a borate, which makes up the anion of the second ionic liquid. The cation of the first ionic liquid is the same as that of the second ionic liquid. A reaction system includes the first and second ionic liquids, water and a catalyst.

A method for preparing metal complex hydride nanorods, comprising the steps of: (1) preparing one-dimensional coordination polymers by mixing metal complex hydrides with organic solvents and subsequent drying; (2) preparing coordination polymer nanostructures by mechanical milling the one-dimensional coordination polymers that obtained from step (1), in which the one-dimensional coordination polymers are vaporized and then deposited onto the substrate; (3) preparing metal complex hydride nanorods by removing the organic ligands from the coordination polymer nanostructures that obtained from step (2). This method is simple and feasible, and exhibits excellent generality. Moreover, the purity of the metal complex hydrides nanostructures is high.

A container is disclosed. The container includes a canister body, at least one heating device and at least one safety device. The canister body includes an inner space for storing a gas storage material. The at least one heating device is accommodated within an inner space of the canister body for heating the gas storage material, so that the gas storage material releases a gas. The at least one safety device is connected with the corresponding heating device and installed on an end part of the canister body. When a temperature of the inner space is higher than a predetermined temperature value or a pressure of the inner space is higher than a predetermined pressure value, a portion of the gas is released through the safety device.