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555
results.
Updated on
19/12/2025 [06:59:00]
Results 175 to 200 of 555
Absstract of: WO2025239823A1
A hydrogen providing system (1) for providing hydrogen to an ironworks plant (4) in a heavy industry site (3). The hydrogen providing system (1) comprises an electrical power control unit (5) connected to a main electrical line (2) providing alternating current, AC, power, an electrolyser (6) configured to produce hydrogen gas, at least one hydrogen storage tank (7) configured to store hydrogen gas, and a fuel mixer (8) in fluid communication with and configured to direct the flow of hydrogen between the electrolyser (6), the hydrogen storage tank (7), and the ironworks plant (4). The hydrogen providing system (1) also comprises an electrical mixer (9) connected to and configured to control the flow of current between an AC current power line (10) connected to the electric power control unit (5), which is configured to control the AC power to the AC current power line (10),a first direct current, DC, power line (11) connected to the electrolyser, and a second DC power line (12) connected to a solar power plant (13).
Absstract of: WO2025237774A1
The invention relates to a method for producing an electrode (10) for use in an electrolysis cell, comprising providing a metal flat material portion (18), wherein the flat material portion extends in a planar manner in a main plane, producing at least one three-dimensional contact structure (16) in the flat material portion (18), comprising introducing at least three slots (44) into the flat material portion in such a way that a connection piece (26) formed between two adjacent slots has a plurality of the through-openings, wherein the slots are distributed around a reference region (46), and comprising moving the reference region out of the main plane such that the reference region is displaced to a contact plane which is offset with respect to the main plane, the slots thereby being expanded, in order to form a contact region (24) of the contact structure (16). The invention also relates to such an electrode and to a stack arrangement having such an electrode.
Absstract of: WO2025237669A1
Disclosed is a method for preparing an electrochemically activated electrode for electrochemical reduction reactions, the electrode comprising at least one catalytic material based on at least one fluorinated group VIB metal, the method consisting in carrying out an oxidative electrochemical treatment on an electrode comprising at least one catalytic material based on at least one fluorinated group VIB metal.
Absstract of: WO2025237667A1
Disclosed is a method for preparing an electrochemically activated electrode for electrochemical reduction reactions, the electrode comprising at least one catalytic material based on at least one group VIB metal supported on an electrically conductive support, the method consisting in carrying out an electrochemical treatment on an electrode comprising at least one catalytic material based on at least one group VIB metal supported on an electrically conductive support. The electrochemical treatment, which is carried out by cyclic voltammetry (CV) or chronoamperometry (CA), consists of a step of oxidation under specific conditions.
Absstract of: WO2025237668A1
Disclosed is a method for preparing a catalytic material of an electrode for electrochemical reduction reactions, the catalytic material comprising an active phase based on at least one group VIB metal and fluorine. The method consists in bringing a solid material based on at least one group VIB metal sulphide into contact with a gas comprising at least difluorine, at a temperature of between -50°C and 150°C, for a duration of between 15 seconds and 120 minutes, the gas having a difluorine concentration of between 0.1 and 100% by volume relative to the total volume of the gas, a pressure of between 0.001 and 0.2 MPa, and a PPH of between 0.01 and 200 h-1.
Absstract of: WO2025238387A1
The subject of the invention relates to an electric energy conversion unit, especially for the use of electricity with time-varying power for the production of hydrogen gas, which has a current conducting piece (2) provided with an input gate (3) that may be connected to the electrical energy supply unit (4), at least one hydrogen gas production subunit (20) connected to the current conducting piece (2), and at least one hydrogen gas storage tank (30) connected to the hydrogen gas production subunit (20), where the hydrogen gas production subunit (20) has an electrolysing cell (21), and the gas output (21a) of the electrolysing cell (21) is connected to the input pipe (31)of the hydrogen gas storage tank (30), and the hydrogen gas storage tank (30) is provided with an unloading pipe (32). It is characteristic of the invention that an electric current regulation subunit (10) is fitted between the input gate (3) of the current conducting piece (2) and the hydrogen gas production subunit (20), where the electric current regulation subunit (10) has at least one transformer (11), a rectifier device (12) and a current intensity regulation device (13), and the current intensity regulation device (13) is interposed between the input gate (3) of the current conducting piece (2) and the input (11a) of the transformer (11), or between the output (11) of the transformer (11) and the input (12a) of the rectifier device (12), or between two transformers (11) in the case of several transfor
Absstract of: US2025354490A1
Techniques and systems extract water from lunar regolith using microwave radiation and may also produce fuel from the extracted water. The system can distill the extracted water to remove impurities before electrolyzing the purified water into oxygen and hydrogen gases, which may then be cooled to form liquid oxygen and liquid hydrogen. A portion of the system may reside on a lunar landing module. Another portion of the system may be affixed to a robotic arm that is extendable from the lunar landing module. This portion of the system includes a water extraction unit, comprising a cone used as a cold trap. The cone may include cooling channels to keep the temperature of the smooth inner surface of the cone cold enough to trap particles of frost that attach to the inner surface. The frost is then scraped from the inner surface and collected.
Absstract of: US2025353758A1
The present description relates to metal alloy electrocatalysts, preferably composed of Ni and Co as transition metals and Se as a chalcogen. The electrocatalysts can take the form of nanochalcogenides that can be made using cryogenic milling followed by surfactant-assistant milling. The electrocatalysts can be used in the context of water electrolysis or electroreduction of CO2 gas into carbon based products.
Absstract of: US2025353740A1
The present disclosure relates to methods for producing hydrogen and calcium- or magnesium-bearing carbonates by capturing, converting, and storing carbon dioxide. The methods may include providing one or more calcium- or magnesium-bearing compounds; providing one or more water-soluble oxygenates; providing a plurality of catalysts; and reacting one or more calcium- or magnesium-bearing compounds and one or more water-soluble oxygenates with plurality of catalysts under conditions to produce hydrogen and calcium- or magnesium-bearing carbonates. The methods may include providing one or more calcium- or magnesium-bearing silicates; providing carbon monoxide; providing water vapor; and reacting one or more calcium- or magnesium-bearing silicates, carbon monoxide, and water vapor. The methods may include providing one or more calcium- or magnesium-bearing compounds; providing one or more water-soluble oxygenates; providing a catalyst; and reacting one or more calcium- or magnesium-bearing compounds and one or more water-soluble oxygenates with said catalyst.
Absstract of: US2025353743A1
A multi-metal composition and a method utilizing the multi-metal composition is disclosed. The multi-metal composition may comprise: an alloy comprising at least five elements selected from the group consisting of Co, Cr, Fe, Mn, Ni, Al, Mg, Cu, Zn, Zr, Ru, Rh, Pd, Ag, W, Re, Ir, Pt, Pd, Au, Ce, Yb, Sn, Ca, Be, Mo, V, W, and Sr. The method may comprise: providing a multi-metal composition comprising an alloy comprising at least five elements selected from the group consisting of Co, Cr, Fe, Mn, Ni, Al, Mg, Cu, Zn, Zr, Ru, Rh, Pd, Ag, W, Re, Ir, Pt, Pd, Au, Ce, Yb, Sn, Ca, Be, Mo, V, W, and Sr; and interacting a gas stream comprising hydrogen sulfide with the multi-metal composition.
Absstract of: US2025353738A1
Methods for photocatalytic water splitting of produced waters may comprise introducing a photocatalyst comprising a semiconductor to a produced water comprising ions of sodium, chloride, calcium, magnesium, potassium, sulfate, barium, iron, lithium, strontium, or any combination thereof; in the presence of sunlight, allowing the photocatalyst to facilitate a reduction-oxidation reaction of a plurality of water molecules from the produced water; and obtaining hydrogen and oxygen.
Absstract of: US2025353754A1
The present disclosure relates to a method for processing a liquid by-product of sodium borohydride hydrolysis to obtain a borate compound, the method comprising the following steps: separating the liquid by-product by sedimentation, to obtain a borate-rich supernatant; drying the borate-rich supernatant under vacuum to obtain a solid composition comprising a borate compound. An aspect of the present disclosure relates composition obtainable by the disclosed method comprising at least 90% (w/w) of sodium boron hydroxide and its use as a source of borate in the production of sodium borohydride and/or hydrogen.
Absstract of: US2025353739A1
The present invention is directed to piezo photocatalytic process for the production of hydrogen from water, wherein the process comprises the steps of: (a) providing non-metal-doped barium titanate which includes at least one defect; (b) contacting the non-metal-doped barium titanate provided in step (a) with water to form a mixture; and (c) subjecting the mixture formed in step (b) to: (i) actinic radiation; and (ii) mechanical force, to produce hydrogen from the water, as well as non-metal-doped barium titanate and methods of production thereof.
Absstract of: US2025353737A1
A system and a method for stabilizing hydrogen flow to a downstream process in a facility determining a hydrogen density and pressure profiles in the hydrogen storage unit for different target net hydrogen flows at different time intervals of a time horizon of a renewable power availability profile, determining an operating target net hydrogen flow of a hydrogen feed to the downstream process, determining a target direct hydrogen flow of a hydrogen feed and a target stored hydrogen flow of a hydrogen feed to the downstream process, and controlling the operation of the downstream process based on the operating target hydrogen flows.
Absstract of: US2025352946A1
Hydrogen gas purifier electrochemical cells, systems for purifying hydrogen gas, and methods for purifying hydrogen gas are provided. The cells, systems, and methods employ double membrane electrode (DMEA) electrochemical cells that enhance purification while avoiding the complexity and cost of conventional cells. The purity of the hydrogen gas produced by the cells, systems, and methods can be enhanced by removing at least some intermediate gas impurities from the cells. The purity of the hydrogen gas produced by the cells, systems, and methods can also be enhanced be introducing hydrogen gas to the cells to replenish any lost hydrogen. Water electrolyzing electrochemical cells and methods of electrolyzing water to produce hydrogen gas are also disclosed.
Absstract of: US2025352926A1
A water sealed tank include a tank body and a heat conducting pipe. The tank body includes a gas-liquid inlet, a water outlet, and a gas outlet. The gas outlet is close to or located on a top portion of the tank body and communicates with the tank body. The water outlet is close to or located on a bottom portion of the tank body. The gas-liquid inlet communicates with the tank body and is used for feeding a gas-water mixture into the tank body, and a gas separated from the gas-water mixture inside the tank body is discharged from the gas outlet. At least a part of the heat conducting pipe is located inside the tank body, and used for a liquid to flow through, to allow the heat conducting pipe to exchange heat with water inside the tank body and heat the water inside the tank body.
Absstract of: CN120303449A
The present invention relates to a symmetric separator membrane for electrolyzing alkaline water and having a uniform pore distribution.
Absstract of: JP2025171335A
【課題】本発明は、水分と反応して分子状水素を発生可能ながらも、金属探知機にかけても誤探知されない水素発生材料を提供することを目的とする。【解決手段】本発明の水素発生材料は、複数の粒子状水素発生剤がマトリックス樹脂中に分散されており、前記マトリックス樹脂中の粒子状水素発生剤の含有量は０．６重量％以上６重量％以下であり、前記粒子状水素発生剤の体積基準平均径Ｄ５０が１μｍ以上５０μｍ以下であることを特徴とする。【選択図】図１
Absstract of: JP2025171336A
【課題】本発明は、酸化防止と共に菌の増殖を抑制して食品や化粧品等の劣化を抑制可能な水素発生材料を提供することを目的とする【解決手段】本発明の水素発生材料は、複数の粒子状水素発生剤と抗菌剤がマトリックス樹脂中に分散されており、前記マトリックス樹脂中に、粒子状水素発生剤は０．６重量％以上６重量％以下、前記抗菌剤は０．１重量％以上１０重量％以下含有している。【選択図】図１
Absstract of: JP2025171628A
【課題】容器の破損を抑制しつつ、水素を発生させる反応容器の技術の提供。【解決手段】水素化ホウ素ナトリウムと水と酸とから、水素と四ホウ酸ナトリウムとを生成させる反応容器が提供される。この反応容器は、前記四ホウ酸ナトリウムが収容される反応容器であって、水和によって体積が膨張した前記四ホウ酸ナトリウムを許容する許容構造を有する反応容器。【選択図】図２
Absstract of: WO2025239840A1
The invention provides a catalytic composition, the catalytic composition comprising copper oxide nanoparticles, carbon black, and a binder. The invention also provides a catalyst, an electrode and an electrolyser comprising the catalytic composition. In addition, the invention provides a method of preparing a catalytic composition, the method comprising (a) providing a binder in a solvent to provide a binder mixture; (b) incorporating carbon black into the binder mixture; (c) incorporating copper oxide nanoparticles into the binder mixture; and (d) stirring the mixture to form a composite material of the binder, carbon black, and copper oxide nanoparticles. The invention also provides a method of producing hydrogen comprising contacting an aqueous electrolyte with the catalytic composition, the catalyst, or the electrode, and applying a voltage sufficient to split water into hydrogen and oxygen.
Absstract of: WO2025240177A1
A system and a method for stabilizing hydrogen flow to a downstream process in a facility determining a hydrogen density and pressure profiles in the hydrogen storage unit for different target net hydrogen flows at different time intervals of a time horizon of a renewable power availability profile, determining an operating target net hydrogen flow of a hydrogen feed to the downstream process, determining a target direct hydrogen flow of a hydrogen feed and a target stored hydrogen flow of a hydrogen feed to the downstream process, and controlling the operation of the downstream process based on the operating target hydrogen flows.
Absstract of: WO2025239623A1
The present invention relates to a photoelectrode and a photoelectrochemical water splitting system using same, and more specifically, to a photoelectrode in which a lower electrode, an electron transport layer including SnO2, a light absorption layer including FAPbI3, a hole transport layer, an upper electrode, and a Ni passivation thin film layer are sequentially stacked and can operate when immersed in water, and an efficient and stable large-area water splitting system capable of splitting water and producing hydrogen without an external voltage by using the photoelectrode.
Absstract of: WO2025239512A1
Disclosed are a fluid heating unit, a hot box, and a solid oxide electrolysis cell system. The disclosed fluid heating unit comprises an electrode recuperator and an electrode heater, wherein the electrode recuperator and the electrode heater are coupled so as to be in fluid communication with each other.
Nº publicación: WO2025239002A1 20/11/2025
Applicant:
DENSO CORP [JP]
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Absstract of: WO2025239002A1
Provided is a method for manufacturing an electrochemical reaction device (1) comprising: an electrochemical cell (2) that includes an electrolyte layer (20), a first electrode (21), and a second electrode (22); a frame (3) that includes a support section (31) and a frame body section (32); and a sealing plate (4) that hermetically separates a second space (122) and an outer peripheral cavity (11) from each other. The sealing plate (4) includes an outer peripheral plate section (42), an inner peripheral plate section (41), and a coupling section (43). The coupling section (43) includes a flexed section (430) flexed so as to protrude in a normal direction Z of the electrolyte layer (20). When forming the flexed section (430), the sealing plate (4), in which the flexed section (430) has not yet been formed, is fixed to the electrochemical cell (2) and the frame (3), and then a buckling step is performed for causing the coupling section (43) to buckle so as to form the flexed section (430) by causing a volume change of at least one of the electrochemical cell (2), the frame (3), or the sealing plate (4).
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