Catalysts comprising MoP and MoP.sub.2 are disclosed, wherein the catalyst is a composite. The catalyst may have a molar ratio of MoP:MoP.sub.2 within a range of 5:95 to 95:5. The catalyst may be used as a cathode active material for hydrogen generation from neutral pH solutions, such as wastewater or seawater. Methods of making the catalyst also are disclosed.

A device intended to be implanted in a human or animal body, in order to produce hydrogen in situ from molecules present in the body medium in which the device is implanted, this device having an anode and a cathode, which are each electrically connected to a pole of an electrical energy source, and having a semi-permeable material separating the electrodes from the body medium, in which device, when the connection to the electrical energy source is effective in situ, in the presence of body fluid, a closed electrical circuit is formed, with production of hydrogen at the cathode, the semi-permeable material having a cutoff threshold of between 50 and 500 Da.

An apparatus is provided for generating hydrogen and oxygen through alkaline electrolysis. A process is also provided for generating hydrogen and oxygen through alkaline electrolysis using the apparatus. The apparatus and process are advantageously applied in apparatuses and systems for the accumulation of hydrogen using demineralized water and electric energy, also coming from renewable sources.

A gas phase reduction apparatus of carbon dioxide includes an oxidation chamber that includes an oxidation electrode; a reduction chamber that is adjacent to the oxidation chamber and receives supplied carbon dioxide; and a porous electrode-supporting electrolyte membrane that is placed between the oxidation chamber and the reduction chamber. The porous electrode-supporting electrolyte membrane is a joined body including a porous reduction electrode joined to an electrolyte membrane. The electrolyte membrane is placed on the oxidation chamber side. The porous reduction electrode is placed on the reduction chamber side and configured to reduce the carbon dioxide by electrons from the oxidation electrode connected via a conductor.

An electrode catalyst for a water electrolysis cell includes a catalyst and a polymer of intrinsic microporosity, and the polymer of intrinsic microporosity is neutral.

In a metal support mostly used for a metal-supported solid oxide fuel cell (SOFC), a SOFC system that improves the power generation efficiency by allowing a gas to smoothly flow into or flow out from the through-holes is achieved. A metal support is formed in a plate shape as a whole and has a plurality of through-holes penetrating from a front surface on which an electrode layer is provided to a back surface, and the metal support has inclined through-holes, as the through-holes each of which has a central axis inclined with respect to a thickness direction.

A method for producing a synthetic fuel from hydrogen and carbon dioxide comprises extracting hydrogen molecules from hydrogen compounds in a hydrogen feedstock to produce a hydrogen-containing fluid stream; extracting carbon dioxide molecules from a dilute gaseous mixture in a carbon dioxide feedstock to produce a carbon dioxide containing fluid stream; and processing the hydrogen and carbon dioxide containing fluid streams to produce a synthetic fuel. At least some thermal energy and/or material used for at least one of the steps of extracting hydrogen molecules, extracting carbon dioxide molecules, and processing the hydrogen and carbon dioxide containing fluid streams is obtained from thermal energy and/or material produced by another one of the steps of extracting hydrogen molecules, extracting carbon dioxide molecules, and processing the hydrogen and carbon dioxide containing fluid streams.

A method for producing a synthetic fuel from hydrogen and carbon dioxide comprises extracting hydrogen molecules from hydrogen compounds in a hydrogen feedstock to produce a hydrogen-containing fluid stream; extracting carbon dioxide molecules from a dilute gaseous mixture in a carbon dioxide feedstock to produce a carbon dioxide containing fluid stream; and processing the hydrogen and carbon dioxide containing fluid streams to produce a synthetic fuel. At least some thermal energy and/or material used for at least one of the steps of extracting hydrogen molecules, extracting carbon dioxide molecules, and processing the hydrogen and carbon dioxide containing fluid streams is obtained from thermal energy and/or material produced by another one of the steps of extracting hydrogen molecules, extracting carbon dioxide molecules, and processing the hydrogen and carbon dioxide containing fluid streams.

A hydrogen water generator includes a body including a first outlet coupled to a first inlet for receiving supply water, and a second inlet coupled to a second outlet, the second outlet for discharging hydrogen water, a water tank assembly detachably attached to the body, the water tank assembly including a water tank and an electrode module coupled to the water tank, and the water tank including a third inlet and a third outlet. When the water tank assembly is attached to the body, the third inlet of the water tank couples to the first outlet of the body, and the third outlet of the water tank couples with the second inlet of the body.

The invention relates to an electrolysis arrangement for the production of hydrogen and oxygen by alkaline electrolysis. The electrolysis arrangement includes a system configuration which enables to balance the lye concentrations between the anode and cathode section of the arrangement depending on the current density of the direct current supplied to the electrolysis stack of the electrolysis medium. At high current densities, hydrogen to oxygen crossover and oxygen to hydrogen crossover is low, which allows full mixing of electrolysis media to balance the concentration between anolyte and catholyte. At low current densities, hydrogen to oxygen crossover and oxygen to hydrogen crossover is high. Therefore, the electrolysis arrangement is configured so that the mixing of the electrolysis media is decreased in case a current density of a direct current supplied to the electrolysis stack is decreased.