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556
resultados
Última actualización
12/12/2025 [07:14:00]
Resultados 25 a 50 de 556
Resumen de: WO2025246031A1
A metal oxide nanotube array structure catalyst, and a preparation method therefor and a use thereof. The preparation method comprises the following steps: cleaning and polishing a metal sheet; immersing the polished metal sheet as an anode in an electrolyte solution to construct an electrochemical system and carrying out an anodic oxidation reaction to obtain a microporous template having a nanotube structure; immersing the microporous template into a metal salt sol for impregnation; taking out the impregnated microporous template, rinsing the surface of the impregnated microporous template with deionized water, then drying the impregnated microporous template, and calcining the impregnated microporous template at a high temperature to convert the metal salt sol into a metal oxide; and dissolving the microporous template with a dissolution solution to obtain the metal oxide nanotube array structure catalyst.
Resumen de: US2025361635A1
A control device for an electrolysis system includes a deterioration prediction unit that predicts a degree of deterioration of each of a water electrolysis stack and a compression stack, and a supplied electrical current control unit that controls an electrical current that is supplied to the water electrolysis stack and an electrical current that is supplied to the compression stack, wherein the supplied electrical current control unit controls the electrical current that is supplied to the stack having a larger degree of deterioration from among the water electrolysis stack and the compression stack to be constant, and adaptively controls the electrical current that is supplied to the stack having a smaller degree of deterioration from among the water electrolysis stack and the compression stack.
Resumen de: WO2025250529A1
Systems and methods for generating hydrogen by electrolysis of water using electricity produced using a vortex generator that results in cavitation and implosion processes in a vortex. The vortex generator can produce conditions within the vortex generator that can allow deuterium molecules naturally occurring in water to acquire sufficient kinetic energy to overcome the Coulomb barrier so that their nuclei can get close enough to each other to undergo various nuclear reactions, discharging a large amount of nuclear energy at the microstate, imparting energy to the water, which can be used to drive a turbine to generate electricity, and the resulting electricity can be used at least in part for the electrolysis of water.
Resumen de: WO2025250426A1
Olefinic products may be produced from various sources. For example, methods of production of olefinic products from carbon dioxide may include: performing an electrolysis reaction of water to form hydrogen and oxygen; providing at least a portion of the hydrogen and carbon dioxide to a methanation unit; reacting the hydrogen and the carbon dioxide via a methanation reaction in the methanation unit to produce methane and water; providing at least a portion of the methane and at least a portion of the oxygen to an oxidative coupling unit; and reacting the methane and the oxygen via an oxidative coupling reaction in the oxidative coupling unit to produce an olefinic product, water, and optionally, additional carbon dioxide.
Resumen de: WO2025248075A1
Embodiments for an apparatus for producing hydrogen peroxide are provided. The apparatus includes a heat exchanger configured to remove heat from deionized water prior to passing the deionized water through the anode passage of one or more cells. The apparatus is also configured to oxidize the deionized water in the anode passage of the one or more cells. The apparatus also includes a controller configured to control the heat exchanger and a first one or more temperature sensors electrically coupled to the controller. The first one or more temperature sensors are configured to provide a first temperature reading based on a temperature of the one or more cells, wherein the controller is configured to control the heat exchanger to maintain the first temperature reading at or below a first temperature threshold.
Resumen de: WO2025247962A1
The present invention relates to a water-efficient method of storing hydrogen using a bicarbonate/formate-based aqueous reaction system, wherein the method comprises: (A) reducing aqueous bicarbonate using hydrogen to form formate and water, (B) at least partially separating water from the aqueous reaction system to provide water and concentrated salt components comprising formate, and (C) using the water provided in step (B) to form hydrogen for use in step (A) and/or to dissolve concentrated salt components comprising bicarbonate to provide aqueous bicarbonate for use in step (A).
Resumen de: US2025369139A1
Oxygen generation systems for use in low-gravity environments include a cell stack having an anode and a cathode. An anode-side phase separator and a cathode-side phase separator are each fluidly coupled to outlets of the cell stack. The anode-side phase separator separates a mixture into liquid water and gaseous oxygen and the cathode-side phase separates a mixture int liquid water and gaseous hydrogen. A ducting system is configured to house the cell stack and the cathode-side phase separator, a hydrogen sensor is arranged at an outlet of the ducting system, and a controller is configured to stop oxygen generation at the cell stack when a concentration of hydrogen is detected at or above a threshold level at the hydrogen sensor at the outlet of the ducting system.
Resumen de: AU2024296183A1
The invention provides a device for producing hydrogen gas and a process therefor. It also provides a system for generating electrical energy from hydrogen gas. More particularly, the invention provides a device for producing hydrogen comprising an ammonia cracker having one or more raw cracked gas outlets in fluid communication with a common raw cracked gas flow conduit, one or more gas separators in fluid communication with the ammonia cracker via the common raw cracked gas flow conduit, and in fluid communication with a common partially purified cracked gas flow conduit; one or more filter assemblies, each having a first container having one or more walls, one or more partially purified cracked gas inlets and one or more purified cracked gas outlets, wherein the one or more partially purified cracked gas inlets are in fluid communication with the one or more gas separators via the common partially purified cracked gas flow conduit, the first container containing a single mass of adsorbent comprising silica gel, wherein the one or more partially purified cracked gas inlets and one or more purified cracked gas outlets are arranged such that a partially purified cracked gas flows through the single mass of adsorbent in use.
Resumen de: AU2025200173A1
A water electrolysis cell according to an embodiment includes: an anode electrode including an anode catalyst layer in which anode catalyst sheets are stacked via a gap, each anode catalyst sheet containing iridium oxide and being in the form of a nanosheet; a cathode electrode including a cathode catalyst layer in which cathode catalyst sheets are stacked via a gap, each cathode catalyst sheet containing platinum and being in the form of a nanosheet; and an electrolyte membrane containing a hydrocarbon-based material, placed between the anode electrode and the cathode electrode. A water electrolysis cell according to an embodiment includes: an anode electrode including an anode catalyst layer in 5 which anode catalyst sheets are stacked via a gap, each anode catalyst sheet containing iridium oxide and being in the form of a nanosheet; a cathode electrode including a cathode catalyst layer in which cathode catalyst sheets are stacked via a gap, each cathode catalyst sheet containing platinum and being in the form 10 of a nanosheet; and an electrolyte membrane containing a hydrocarbon-based material, placed between the anode electrode and the cathode electrode. an a n a n d t h e c a t h o d e e l e c t r o d e 36a 36b 36a34a 34b 34a 3／33/3 35 34 36 37 36a 34a 36b 34b 34a 36a an a n b b a a
Resumen de: AU2024296614A1
A hydrogen production device for producing a hydrogen rich gas from ammonia comprising a first chamber comprising an inner wall and an outer wall defining an internal volume, wherein the first chamber contains an ammonia decomposition catalyst disposed between the inner wall and the outer wall, the first chamber having one or more ammonia gas inlets and one or more raw cracked gas outlets, wherein said one or more ammonia gas inlets and one or more raw cracked gas outlets are arranged such that the ammonia flows through the first chamber from the one or more ammonia gas inlets to the one or more raw cracked gas outlets and contacts the ammonia decomposition catalyst; and one or more heat sources for heating the ammonia decomposition catalyst; wherein the first chamber has one or more fins, said one or more fins disposed between the inner wall and the outer wall of the first chamber, wherein the first chamber has an internal surface area, wherein the internal volume is between 10 ml and 100 litres and wherein the ratio of the internal surface area in mm2 to the internal volume in mm3 is between approximately 1:2 and 1:6.
Resumen de: US2025369126A1
Embodiments for an apparatus for producing hydrogen peroxide are provided. The apparatus includes a heat exchanger configured to remove heat from deionized water prior to passing the deionized water through the anode passage of one or more cells. The apparatus is also configured to oxidize the deionized water in the anode passage of the one or more cells. The apparatus also includes a controller configured to control the heat exchanger and a first one or more temperature sensors electrically coupled to the controller. The first one or more temperature sensors are configured to provide a first temperature reading based on a temperature of the one or more cells, wherein the controller is configured to control the heat exchanger to maintain the first temperature reading at or below a first temperature threshold.
Resumen de: US2025368520A1
The invention relates to a system and a method for producing ammonia, including an ammonia reactor which is formed for the generation of ammonia (NH3) from a synthesis gas, where the synthesis gas includes hydrogen (H2) and nitrogen (N2), further including an electrolizer which is formed to generate hydrogen and oxygen from water, where the electrolizer is operated with renewable energies, further including a gas turbine operated with hydrogen, where the exhaust gas of the gas turbine containing nitrogen (N2) is employed for the generation of the synthesis gas.
Resumen de: US2025369137A1
Oxygen generation systems for use in low-gravity environments include a cell stack with an anode-side phase separator and a cathode-side phase separator fluidly coupled to outlets of the cell stack. An anode-side flow controller and a cathode-side flow controller are arranged downstream from the respective phase separators. A pressure differential is induced upstream of the anode-side flow controller that is greater in pressure than a downstream side thereof. A pressure differential is induced upstream of the cathode-side flow controller that is greater in pressure than a downstream side thereof. An input flow controller is arranged upstream from the stack inlet, the input flow controller configured to cause a pressure differential such that an upstream side of the input flow controller is greater than a downstream side of the input flow controller.
Resumen de: US2025369135A1
The present invention relates to an electrode for a hydrogen evolution reaction in an alkaline water electrolysis cell, wherein the electrode comprises: a co-catalyst consisting of a composite containing a Lewis acid-containing material and a metal-organic framework (MOF); and a catalyst surrounded by the co-catalyst. According to the present invention, the water dissociation step of the alkaline hydrogen evolution reaction is promoted, hydrogen gas generated by the hydrogen evolution reaction can easily permeate through the structure, and Nafion is uniformly dispersed by the large pores created by the MOF, thereby implementing the co-catalyst effect across the entire surface while minimizing catalyst poisoning.
Resumen de: US2025369130A1
The present disclosure provides a water electrolysis membrane electrode, a method for preparing the water electrolysis membrane electrode, and a water electrolyzer applying the water electrolysis membrane electrode. The water electrolysis membrane electrode includes a cathode gas diffusion layer, a cathode catalytic layer, an anion exchange membrane, a hydrophobic anode catalytic layer, and an anode gas diffusion layer that are stacked in sequence. Raw materials for preparing the hydrophobic anode catalytic layer include an anode catalyst, a hydrophobic material, and an anode ionomer. A mass ratio of the anode catalyst, the hydrophobic material, and the anode ionomer is 10:1-3:1-3. A porosity of the hydrophobic anode catalytic layer is 10%-40%.
Resumen de: AU2025203497A1
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 5 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 10 target hydrogen flows. A system and a method for stabilizing hydrogen flow to a downstream process in a 5 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 10 process, and controlling the operation of the downstream process based on the operating target hydrogen flows. ay a y
Resumen de: US2025320419A1
Systems and methods for producing green hydrogen from a source material (e.g., biowaste) are contemplated. The source material is at least partially dehydrated to produce a dried intermediate and recovered water. The dried intermediate is pyrolyzed to produce syngas and a char. The recovered water is electrolyzed to produce oxygen and green hydrogen.
Resumen de: US2025373010A1
A system combination having at least two electrolysis systems, a power supply source having a direct voltage output, and a central supply line is provided. The central supply line is connected to the direct voltage output of the power supply source, so that a direct current can be fed into the central supply line and a central DC network designed for high voltage is provided, to which DC network the electrolysis systems are connected by means of the central supply line. The power supply source has, as a power generator, a wind turbine, to which a rectifier having a direct voltage output is connected, the direct voltage output being designed for the high voltage.
Resumen de: WO2025246138A1
A water electrolysis membrane electrode, and a preparation method therefor and a water electrolyser applying same. The water electrolysis membrane electrode comprises a cathode gas diffusion layer, a cathode catalytic layer, an anion exchange membrane, a hydrophobic anode catalytic layer and an anode gas diffusion layer. Raw materials for preparing the hydrophobic anode catalytic layer comprise an anode catalyst, a hydrophobic material and an anode ionomer, wherein calculated by mass, the ratio of the anode catalyst: the hydrophobic material: the anode ionomer is 10:1-3:1-3. The porosity of the hydrophobic anode catalytic layer is 10-40%.
Resumen de: EP4656506A1
A floating power plant (2) comprises a plurality of interconnected floating platforms (6) which are movable with respect to each other. Each floating platform (6) comprises a floating member (8), wherein the floating member (8) of at least one floating platform (6) has an internal chamber (9) for storing hydrogen. The floating power plant (2) is provided with an electrolyzer including a hydrogen output and a fuel cell including a hydrogen input. The largest number of the floating platforms (6) is provided with PV panels (3) and at least one of the floating platforms (6) is provided with the electrolyzer and/or the fuel cell. The electrolyzer is electrically connectable to the PV panels (3) and the hydrogen output and/or the hydrogen input is fluidly connectable to the internal chamber (9) of the floating member (8) of the at least one platform (6).
Resumen de: EP4656590A1
The present invention relates to a water-efficient method of storing hydrogen using a bicarbonate/formate-based aqueous reaction system, wherein the method comprises:(A) reducing aqueous bicarbonate using hydrogen to form formate and water,(B) at least partially separating water from the aqueous reaction system to provide water and concentrated salt components comprising formate, and(C) using the water provided in step (B) to form hydrogen for use in step (A) and/or to dissolve concentrated salt components comprising bicarbonate to provide aqueous bicarbonate for use in step (A).
Resumen de: EP4656771A1
A floating hydrogen production plant (2) comprises a plurality of interconnected floating platforms (6) which are movable with respect to each other. Each floating platform (6) comprises a floating member (7). The floating member (7) of at least one floating platform (6) has an internal chamber (8) for storing hydrogen. Each of the floating platforms (6) is provided with a plurality of hydrogen production devices (3) for producing hydrogen by electrolysis of water in the ambient air through solar energy. The hydrogen production devices (3) have respective hydrogen ports which are fluidly connectable to the internal chamber (8) of the floating member (7) of the at least one floating platform (6).
Resumen de: EP4656772A1
The present disclosure provides a water electrolysis membrane electrode, a method for preparing the water electrolysis membrane electrode, and a water electrolyzer applying the water electrolysis membrane electrode. The water electrolysis membrane electrode includes a cathode gas diffusion layer, a cathode catalytic layer, an anion exchange membrane, a hydrophobic anode catalytic layer, and an anode gas diffusion layer that are stacked in sequence. Raw materials for preparing the hydrophobic anode catalytic layer include an anode catalyst, a hydrophobic material, and an anode ionomer. A mass ratio of the anode catalyst, the hydrophobic material, and the anode ionomer is 10:1-3:1-3. A porosity of the hydrophobic anode catalytic layer is 10%-40%.
Resumen de: EP4657576A1
Problem To provide a catalyst-loaded carbon having a high initial activity and excellent durability. Solution A catalyst-loaded carbon including catalyst particles and a carbon support, the catalyst particles being loaded on the carbon support. The carbon support has a crystallite size of 3.5 nm or greater and 9 nm or less, a BET specific surface area of 300 m<sup>2</sup>/g or greater and 450 m<sup>2</sup>/g or less, and a pore size of 5.0 nm or greater and 20.0 nm or less. The catalyst particles are made of platinum or a platinum alloy, have a crystallite size of 2.5 nm or greater and 5.0 nm or less and a surface area of 40 m<sup>2</sup>/g or greater and 80 m<sup>2</sup>/g or less.
Nº publicación: JP2025539180A 03/12/2025
Solicitante:
中国科学院大▲連▼化学物理研究所
Resumen de: WO2024114488A1
The present invention belongs to the field of water electrolysis for hydrogen production. Disclosed are a PEM water electrolysis bipolar plate and a manufacturing method. The present invention uses a stainless steel plate as a substrate. The substrate is provided with through hole structures which have the same structure as flow channel ridges and positions of which match positions of the flow channel ridges. The upper surface and the lower surface of the substrate are both provided with a titanium layer, and the titanium layers fill the through hole structures so as to enable the upper titanium layer and the lower titanium layer to be connected. A spherical dehydrogenated titanium powder layer and a functional coating are successively provided on the surface of each of the titanium layers. The functional coatings form the flow channel ridges, flow disturbing pillars and a hydrogen-oxygen frame of the bipolar plate. The pore diameter of the spherical dehydrogenated titanium powder layers is 100 nm to 10 μm; and the titanium layers, the spherical dehydrogenated titanium powder layers and the functional coatings all contain titanium powders. The present invention can improve the conductivity of the bipolar plate while using a low-cost stainless steel plate, thus improving the overall properties of the water electrolysis bipolar plate.
BOPI
Sede Electrónica
