The present disclosure relates to a hydrogen-storage device and a method for releasing hydrogen from the hydrogen-storage device. Moreover, the disclosure relates to an energy-producing device and an aircraft having the hydrogen-storage device and/or the energy-producing device. According to the disclosure, a hydrogen-storage device is provided. The hydrogen-storage device includes an outer coating, an inner core material and a hydrogen releasing interface in the outer coating. The inner core material includes a composite containing a matrix material having porous carbon-containing material and a hydrogen-storage material having chemically bonded hydrogen.

A solid-gas reaction substance-filled reactor includes a core part in which heat medium heat-transfer tubes and spacers are alternately stacked, a gas introduction/discharge part that communicates with opening ends of the spacers, and a heat medium introduction/discharge part that communicates with heat medium flow paths. Filled bodies including metallic foil bags and a solid-gas reaction substance filled in the bags are inserted into the spacers. At least the filled bodies and the heat medium heat-transfer tubes are brazed to each other. The solid-gas reaction substance-filled reactor is obtained by stacking the filled bodies with the solid-gas reaction substance filled into the metallic bags, the heat medium heat-transfer tubes, and the spacers in a predetermined order and then brazing them.

The invention relates to a method for storing electric energy, which comprises the steps a) production of methane from water and soot using electric energy, b) storage of the methane, c) dissociation of the methane into hydrogen and soot, with the hydrogen being used for energy generation, or energy generation by conversion of the methane into soot and water in a cyclic bromination-oxidation process,
wherein the soot formed in the dissociation of methane or in the cyclic bromination-oxidation process in step c) is collected and, in a renewed pass through the method, is used for methane production in step a), so that a closed carbon circuit is formed, and also a system comprising a power-methane conversion plant in which electric power is converted together with soot and water into methane and also a methane-power conversion plant in which methane is converted into hydrogen with elimination of soot.

The present application is generally directed to gas storage materials such as activated carbon comprising enhanced gas adsorption properties. The gas storage materials find utility in any number of gas storage applications. Methods for making the gas storage materials are also disclosed.

The present application is generally directed to gas storage materials such as activated carbon comprising enhanced gas adsorption properties. The gas storage materials find utility in any number of gas storage applications. Methods for making the gas storage materials are also disclosed.

A heater assembly for use in a hydrogen generator can be retracted to facilitate insertion and removal of a replaceable fuel unit without damaging the heater assembly or the fuel unit and extended to provide good thermal contact with the fuel unit during use of the hydrogen generator. The heater assembly includes a support member, a heater, and an actuator for extending and retracting the heater assembly. When the heater is energized it heats the actuator, thereby extending the heater assembly to contact the adjacent fuel unit, and when the heater is deenergized the actuator cools to retract the heater assembly and provide a gap between the heater assembly and the adjacent fuel unit. The actuator is movably secured to the heater or the support member by a retainer such that an end of the actuator is movable within the retainer as the actuator changes shape during heating and cooling.

A carbon material that is compact and exhibits an excellent hydrogen storage capacity. A carbon material has a specific surface area of 200 m.sup.2/g or less and exhibits a hydrogen storage capacity of 1.510.sup.5 g/m.sup.2 or more at a hydrogen pressure of 10 MPa.

The electronic structure of nanowires, nanotubes and thin films deposited on a substrate is varied by doping with electrons or holes. The electronic structure can then be tuned by varying the support material or by applying a gate voltage. The electronic structure can be controlled to absorb a gas, store a gas, or release a gas, such as hydrogen, oxygen, ammonia, carbon dioxide, and the like.

The present disclosure relates to a composite having a porous graphene oxide material (A) and ammonia borane (B), wherein the porous graphene oxide material (A) has a density of 1-100 mg/cm.sup.3, and a method for producing the same. The disclosure also relates to a hydrogen-releasing device having the disclosed composite as well as to an energy-producing device having the disclosed composite. Moreover, the disclosure relates to an aircraft having the hydrogen-releasing device and/or the energy-producing device.

The present invention relates to a porous nano structure and a method of manufacturing same. The porous nano structure exhibits excellent mechanical strength and has a wide specific surface area and is therefore useful as an absorbent, a vibration absorber, a sound absorber, a shock absorber, a catalyst support, a membrane for separation, etc., and can be applied to various technical fields such as electronics, composite materials, sensors, catalysts, energy storage materials, and ultra-high capacity storage batteries. In particular, the porous nano structure exhibits excellent hydrogen storage capability and is thus very useful as a hydrogen storage material.