Disclosed is a hydrogen storing method having improved energy efficiency by efficiently reusing heat through a heat circulation structure. Specifically, the hydrogen storing method includes supplying hydrogen by the supply device, compressing hydrogen received from the supply device by a compression device, receiving the hydrogen compressed by the compression device and storing the same in a storage device, and transferring heat generated from the storage device to the compression device, wherein the compression device and the storage device each include solid state hydrogen storage materials that cause an exothermic reaction when hydrogen is stored and an endothermic reaction when hydrogen is released.

Disclosed is a solid state hydrogen storage device, capable of providing a weight reduction of a hydrogen storage system while inhibiting heat conduction performance from being degraded, and also of increasing hydrogen storage capacity. The present disclosure provides a heat conduction fin including multiple tube passing holes through which the heat exchange tube passes and linear-shaped connecting portions connecting the tube passing holes to each other, and a solid state hydrogen storage device having the same.

The invention relates to power engineering equipment, in particular, to an self-contained portable device for filling cylinders with high-pressure hydrogen at preliminary high-pressure hydrogen production from hydrolysis. The technical result of the invention is providing with high-purity high-pressure hydrogen charging in any place, where there is an access to water, with complete elimination of power costs, reducing reactor weight, high performance reliability and easy servicing of the device. The self-contained portable device for charging cylinders with high-pressure hydrogen comprising a reaction chamber containing a solid reagent cartridge and reaction liquid pipe configured to supply liquid reagent to the lower part of the reaction chamber, a refrigerant dryer comprising installed in series a hydrogen cooler, filter-separator and hydrogen dryer, liquid reagent pipeline connected with the reaction liquid pipe, high-pressure hand pump connected with the liquid reagent pipeline to the reaction chamber and configured to feed liquid reagent in portions to the reaction chamber, gaseous hydrogen pipeline connecting the reaction chamber and refrigerant dryer, treated gaseous hydrogen pipeline configured to supply high-pressure hydrogen from the refrigerant dryer to a cylinder, wherein the gaseous hydrogen pipeline, treated gaseous hydrogen pipeline and liquid reagent pipeline are equipped with quick-release couplings, and the reaction chamber is placed in the reaction chamber cooling tank.

An apparatus for supplying gas includes: an ion chamber; and a gas supply unit connected to the ion chamber, wherein the gas supply unit includes: a case having an internal space; an inactive gas supply unit connected to the ion chamber; and a hydrogen gas supply unit installed inside or outside of the case, wherein the hydrogen gas supply unit includes: a hydrogen gas generator generating hydrogen gas; a controller connected to the hydrogen gas generator; a dehumidifying filter connected to the controller and removing moisture from the hydrogen gas; and a purifying filter connected to the dehumidifying filter and removing an impurity from the hydrogen gas, wherein the hydrogen gas generator is configured to generate the hydrogen gas through a chemical reaction between a reactant and a hydrogen-containing solid raw material.

The present invention relates to a composite material for hydrogen storage based on metal hydrides and to a method of operating a hydrogen storage system based on metal hydrides capable of releasing and absorbing hydrogen. Such hydrogen storage systems based on metal hydrides may be applicable as a fuel source for a fuel cell. The composite material for hydrogen storage comprises a powder or pellets of a hydride and a phase changing material (PCM), wherein the PCM is an encapsulated phase changing material (EPCM) which is homogeneously dispersed within the powder or pellets of the hydride.

The present invention relates to a method for operating a fluidized bed apparatus and to a fluidized bed apparatus, the method comprising the following steps: providing particulate metal to a reaction chamber of a fluidized bed reactor, providing an oxidizing agent to a fluidizing bottom of the fluidized bed reactor such that particulate matter comprising the particulate metal is fluidized, wherein the particulate metal reacts with the oxidizing agent to particulate metal oxide, withdrawing particulate metal oxide from the reaction chamber, storing the withdrawn particulate metal oxide, providing particulate metal oxide to the reaction chamber of the fluidized bed reactor, providing a reducing agent containing gas to the fluidizing bottom of the fluidized bed reactor such that particulate matter comprising the particulate metal oxide is fluidized, wherein the particulate metal oxide reacts with the reducing agent to particulate metal, withdrawing the particulate metal from the reaction chamber, storing the withdrawn particulate metal.

A hydrogen station includes a water electrolysis device that produces hydrogen gas by an electrolytic reaction consuming power supplied from a commercial power network, a compressor that compresses the hydrogen gas produced by the water electrolysis device, an accumulator that accumulates the hydrogen gas compressed by the compressor, a dispenser that fills a fuel cell vehicle with the hydrogen gas accumulated in the accumulator, and a control device that controls a power consumption amount of the water electrolysis device on the basis of a command for adjusting supply and demand of power of the commercial power network.

A non-pyrophoric AB.sub.2-type Laves phase hydrogen storage alloy and hydrogen storage systems using the alloy. The alloy has an A-site to B-site elemental ratio of no more than about 0.5. The alloy has an alloy composition including about (in at %): Zr: 2.0-5.5, Ti: 27-31.3, V: 8.3-9.9, Cr: 20.6-30.5, Mn: 25.4-33.0, Fe: 1.0-5.9, Al: 0.1-0.4, and/or Ni: 0.0-4.0. The hydrogen storage system has one or more hydrogen storage alloy containment vessels with the alloy disposed therein.

The present disclosure provides a gas storage device. In an embodiment, the gas storage device includes a cylinder with opposing ends. An endcap is present at each end. The cylinder and the endcaps form an enclosure. Each endcap includes a connector. A diaphragm is located in the enclosure. The diaphragm includes an annular sidewall. The device includes an inner chamber defined by an inner surface of the sidewall, and a storage space between an interior surface of the cylinder and an outer surface of the sidewall. A metal hydride composition is located in the storage space.

The present disclosure is directed toward a method for storing carbon dioxide. The method for storing carbon dioxide comprises several steps. A dissolving fluid comprising water is injected into a salt formation to produce a brine and a salt cavern within the salt formation. The brine is then removed from the salt cavern. A sorbent is then placed within the salt cavern before carbon dioxide is injected into the salt cavern.