A low-temperature dehydrogenation method includes a dehydrogenation reaction of a reactant including a piperidine-based compound substituted with one or more alkyl groups. The dehydrogenation reaction takes place in the presence of a catalyst including an active metal. The active metal includes platinum (Pt), palladium (Pd), or a mixture thereof that is supported on a carrier including a composite metal oxide having alumina (Al.sub.2O.sub.3) and an additional metal oxide different from alumina, at a low temperature of 150° C. to 250° C., to produce hydrogen.

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 present invention provides a system, a process and a method of storing hydrogen (H.sub.2) and releasing it on demand, comprising and making use of N-heterocycles as liquid organic hydrogen carriers (LOHCs).

An electrochemical hydrogen pump according to the present disclosure includes: a cell including an electrolyte membrane, an anode disposed on a first main surface of the electrolyte membrane, and a cathode disposed on a second main surface of the electrolyte membrane; a voltage applicator applying a voltage between the anode and the cathode, the voltage applicator applying the voltage to cause the electrochemical hydrogen pump to transfer hydrogen in hydrogen-containing gas supplied to the anode to the cathode and to pressurize the hydrogen; and a controller, when at least one selected from the group consisting of a dew point of the hydrogen-containing gas supplied to the anode and a temperature of the cell is increased, controlling the voltage applied by the voltage applicator to increase a current flowing between the anode and the cathode.

Methods and systems for removing impurities from electrolyte solutions having three or more valence states. In some embodiments, a method includes electrochemically reducing an electrolyte solution to lower its valence state to a level that causes impurities to precipitate out of the electrolyte solution and then filtering the precipitate(s) out of the electrolyte solution. In embodiments in which the electrolyte solution is desired to be at a valence state higher than the precipitation valence state, a method of the disclosure includes oxidizing the purified electrolyte solution to the target valence.

This disclosure relates to novel metal hydrides, processes for their preparation, and their use in hydrogen storage applications.

A power generator is described that provides at least one of electrical and thermal power comprising (i) at least one reaction cell for reactions involving atomic hydrogen hydrogen products identifiable by unique analytical and spectroscopic signatures, (ii) a molten metal injection system comprising at least one pump such as an electromagnetic pump that provides a molten metal stream to the reaction cell and at least one reservoir that receives the molten metal stream, and (iii) an ignition system comprising an electrical power source that provides low-voltage, high-current electrical energy to the at least one steam of molten metal to ignite a plasma to initiate rapid kinetics of the reaction and an energy gain. In some embodiments, the power generator may comprise: (v) a source of H.sub.2 and O.sub.2 supplied to the plasma, (vi) a molten metal recovery system, and (vii) a power converter capable of (a) converting the high-power light output from a blackbody radiator of the cell into electricity using concentrator thermophotovoltaic cells or (b) converting the energetic plasma into electricity using a magnetohydrodynamic converter.

Some embodiments of the disclosure provide a trace nickel-compounded layered magnesium composite material, a method for preparing the composite material, and use thereof. In some examples, the trace nickel-compounded layered magnesium composite material includes a nano-layered magnesium matrix and nano nickel. The nano nickel is distributed on a surface and between inner layers of the nano-layered magnesium matrix. In other examples, the nano-layered magnesium matrix in the composite material has a size of 10-20 nm, a layer thickness of 10-200 nm, and a layer spacing of 10-100 nm. The mass content of the nano nickel in the composite material is 2-6%. The nano nickel in the composite material has a particle size of 3-50 nm.

In some embodiments, a system for producing synthesis gas, the system including a reactor including a burner, a combustion chamber, and a catalyst chamber, and a mixer upstream of the reactor configured to mix fuel with steam to produce humidified fuel that is provided to the burner of the reactor.

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.