A hydrogen heating device includes: a sealed container configured to allow a hydrogen-based gas to be led in; a heat generating element provided inside the sealed container and configured to generate heat by occluding and discharging hydrogen; and a temperature adjustment unit configured to adjust a temperature of the heat generating element. The heat generating element includes a plurality of stacked bodies each including a support made of at least one of a porous body, a hydrogen permeable film, and a proton conductor, and a multilayer film supported by the support. The multilayer film has a first layer made of a hydrogen storage metal or a hydrogen storage alloy and having a thickness of less than 1000 nm, and a second layer made of a hydrogen storage metal or a hydrogen storage alloy different from the first layer, or ceramics and having a thickness of less than 1000 nm.

The system comprises a steam reforming unit to produce hydrogen from exhaust gas supplied, a hydrogen permeable membrane to allow only hydrogen produced by the steam reforming unit to pass through it, a hydrogen storage unit to absorb hydrogen supplied through the hydrogen permeable membrane and release absorbed hydrogen, a fuel cell to generate power using hydrogen supplied from the hydrogen storage unit, a gas clean-up unit to clean up residual gases delivered not passing through the hydrogen permeable membrane, and a control unit to control the hydrogen storage unit to absorb or release hydrogen depending on whether the fuel cell is supplied with sufficient hydrogen.

The present disclosure relates to improved processes for the preparation of metal hydrides. The present disclosure also relates to metal hydrides, e.g., metal hydrides prepared by the processes described herein, that exhibit enhanced hydrogen storage capacity when used as hydrogen storage systems.

A solid state hydrogen storage system and materials are provided. Hydrogen storage is provided by the formation of metal hydrides in a nanoporous metal framework. H.sub.2 can be effectively released from the hydride that is made directly during the synthesis processes at just 100 C. Dealloying using galvanic corrosion in a metal ion electrolyte and in a hydrogen containing atmosphere is used to create monolithic nanoporous metal frameworks and the simultaneous formation of metal hydrides within the porosity. The nanoporous frameworks have a tunable plasmon resonance and morphology. The system can reversibly store hydrogen in the nanoporous framework using hot electrons generated either by surface plasmons or by exothermic galvanic replacement reactions to form metal hydrides.

A heat generating device includes a pair of heaters provided with an interval therebetween; and a plurality of heat generating elements that are capable of occluding hydrogen and generating heat using a heat generating reaction by quantum diffusion of the hydrogen caused by heat of the pair of heaters, in which the plurality of heat generating elements are arranged with an interval between each other and are arranged between the pair of heaters.

A hydrogen gas storage unit includes at least two hydrogen gas storage chambers. The hydrogen gas storage unit comprises a cylindrical container having an end anvil at each end of the cylindrical container. The at least two hydrogen gas storage chambers are separated by an intermediate anvil and at least one spacer disk. The intermediate anvil has a channel that permits hydrogen gas to flow between the two hydrogen gas storage chambers. The spacer disk extends radially outward from the intermediate anvil and secures a diaphragm in position within at least one of the hydrogen gas storage chambers. A metal alloy that can store hydrogen gas is located between the outer surface of the diaphragm and the inner surface of the cylindrical container.

A method for storing hydrogen in a metallic base material is disclosed along with material which can be obtained according to the method, and to the use of said material for providing hydrogen by releasing the hydrogen from the material. The method prevents disadvantages of conventional methods for storing H.sub.2. This is achieved in that hydrogen is stored by means of direct hydrogen enrichment of a metallic base material provided in the liquid or gaseous state and subsequent rapid solidification. An AlMg alloy or Al or Mg is used as the metallic base material. The material enriched with hydrogen contains hydrogen in the form of metal hydrides as well as in the dissolved form and as pores.

Laves phase-related BCC metal hydride alloys historically have limited electrochemical capabilities. Laves phase-related BCC metal hydride alloys are provided herein with greater than 200 mAh/g capacities and commonly at or greater than 400 mAh/g capacities. By decreasing the temperature or increasing the hydrogen pressure the phase structure of the material a synergistic effect between multiple phases in the resulting alloy is achieved thereby greatly improving the electrochemical capacities.

A solid-state hydrogen storage device and a solid-state hydrogen storage system are provided. The solid-state hydrogen storage device includes a storage unit that stores a first hydrogen storage material therein and a heat medium pipe that is disposed in the storage unit including a heat medium and a second hydrogen storage material. The heat medium pipe includes a separating pipe disposed therein to separate the heat medium and the second hydrogen storage material from each other, and the second hydrogen storage material is disposed in the separating pipe.

The present invention concerns a hydrogen store comprising a hydrogenable material, a method for producing the hydrogen store and a device for producing the hydrogen store.