Resumen de: WO2025249273A1
Provided is a method for controlling a water electrolysis system with which operation states of a plurality of electrolysis stacks can be independently regulated highly responsively and highly efficiently. This method is for controlling a water electrolysis system which comprises: electrolysis stacks where water is electrolyzed to produce hydrogen and oxygen; a pure water feeder for feeding pure water to the electrolysis stacks; a first regulation part and a second regulation part, which are disposed between each electrolysis stack and the pure water feeder and are capable of regulating the operation state of the electrolysis stack; and an operation state regulation control unit which regulates the first regulation part and the second regulation part to regulate the operation states of the electrolysis stacks. The operation state regulation control unit, after receiving a command to change the operation state of an electrolysis stack, operates the first regulation part on the basis of the operation state and, when a predetermined requirement has been satisfied, operates the second regulation part simultaneously with the first regulation part on the basis of the operation state.
Resumen de: CN120435590A
Methods and systems related to valuing carbon dioxide are disclosed. The disclosed system includes a reverse water gas shift (RWGS) reactor, a carbon dioxide source connection fluidly connecting a carbon dioxide source to the RWGS reactor, an electrolyzer having an anode region and a cathode region, and a carbon monoxide source connection fluidly connecting the RWGS reactor to the cathode region. The RWGS reactor is configured to generate a volume of carbon monoxide in an RWGS reaction using a volume of carbon dioxide from the carbon dioxide source connection. The electrolyzer is configured to generate a volume of generated chemicals, including hydrocarbons, organic acids, alcohols, olefins, or N-rich organic compounds, using the electrolyzer and the reduction of the volume of carbon monoxide and the oxidation of an oxidizing substrate from the carbon monoxide source link.
Resumen de: AU2024202934A1
Disclosed in one example is gas pressure equalisation systems (400-401), and method of operation, for an electro-synthetic or electro-energy liquid-gas cell or cell stack (210). The gas pressure equalisation systems (400-401) comprise a first pressure equalisation tank (410) for partially containing a first liquid (470) and a first gas. The first gas is positioned above a liquid first level (471). A first gas conduit (430) is provided for the transfer of the first gas between the cell or cell stack (210) and the first pressure equalisation tank (410). In another example, a second pressure equalisation tank (420) may be additionally provided for partially containing a second liquid (473) and a second gas positioned above a liquid second level (472). A second gas conduit (440) is then provided for the transfer of the second gas between the cell or cell stack (210) and the second pressure equalisation tank (420).
Resumen de: WO2024247383A1
Provided is an ammonia decomposition device capable of achieving both an improvement in ammonia conversion rate and an improvement in catalyst life. An ammonia decomposition device (11) comprises: an ammonia gas inlet (13); a catalyst-carrying honeycomb structure (1) that decomposes ammonia to generate hydrogen and nitrogen; and a gas outlet (14). The catalyst-carrying honeycomb structure (1) includes: a ceramic honeycomb structure; a catalyst layer (3) that is formed in a flow path (2a) of the honeycomb structure and decomposes ammonia; and electrodes (4a, 4b) that are formed on a side surface of the honeycomb structure. Electricity is passed through the honeycomb structure.
Resumen de: AU2024228415A1
Enclosure adapted for a hydrogen and oxygen generating apparatus arranged in a movable has an interior and an interior surface and an exterior surface whereby the hydrogen and oxygen generating apparatus comprises at least one electrolyser stack adapted for electrolysing water to hydrogen product gas and oxygen product gas and accompanying gas and electrolyte handling equipment. The exterior surface of the enclosure comprises at least a heat insulating, flexible polymer cover element which is attached to a metal frame.
Resumen de: TW202428942A
There is provided a cathode chamber assembly, which may not require any skill for assembling, and which may not cause any problems such as formation of an undesirable space in the peripheral portion of the cathode chamber. The cathode can be easily replaced when it deteriorates. The cathode is attached detachably to ribs formed on the bulkhead, directly or indirectly with a plurality of fastening screws or fastening pins, and further or alternatively, a peripheral flange of a rectangular flame shape extending along the inner surface peripheral portion of the bulkhead is disposed. In the embodiment, the cathode may be attached by bonding one surface of a rectangular gasket to the inner surface of the peripheral flange, and by adhering an adhesive tape across the inner peripheral portion of the other surface of the gasket and the outer peripheral portion of the exposed surface of the cathode.
Resumen de: JP2025176907A
【課題】電解スタックの状態を簡便に診断できるようにする。【解決手段】原料化合物の電気分解により所望のガスを生成する電解スタック10と、電解スタック10に電圧を印加する電力変換装置6と、電解スタック10に印加された電圧を計測する電圧センサ7と、電解スタック10に電圧を印加した際に電圧センサ7が取得する電圧の時系列データを用いて、電解スタックの静電容量成分で規定される指標を算出し、算出した指標の値を基準値と比較して電解スタックの状態を診断する診断装置20と、診断装置が診断した結果を外部に出力または表示する出力装置30と、を備える。【選択図】図1
Resumen de: WO2024184587A1
The invention relates to a method for producing a compound comprising at least one of hydrogen or oxygen. The method comprises providing water and a first substance, producing a mixture comprising the water and bubbles comprising the first substance, decreasing diameter of bubbles comprising the first substance, decomposing a part of the water, and composing a compound at least from the decomposed water and the first substance, and the compound comprising at least one of hydrogen or oxygen. The invention further relates to apparatus for producing a compound comprising at least one of hydrogen or oxygen.
Resumen de: AU2024224224A1
In a gas pressure balance method in an electrolyser system a predefined pressure difference between pressures in an oxygen gas separation tank and a hydrogen gas separation tank is maintained by controlled release of gases through an oxygen back pressure valve and a hydrogen back pressure valve. in a first step, for each of the oxygen back pressure valves and the hydrogen back pressure valves, a predefined, calibrated pilot gas pressure is generated and in a second step, the predefined, calibrated pilot gas pressures are forwarded to the respective back pressure valves and in a third step, hydrogen and oxygen gasses are released whenever the gas pressures in the hydrogen and oxygen separation tanks exceeds the predefined, calibrated pilot pressure in the respective pilot gas streams.
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: WO2025247582A1
The invention relates to a method and a facility (100) for producing a hydrogen-containing product, wherein ammonia (1) is subjected to a pretreatment (10) so as to obtain an ammonia feed (2), and the ammonia feed (2) is converted into a cracked gas (3), containing ammonia, hydrogen, and nitrogen, in a heated ammonia cracker (20), a sulfur-free fuel gas being burned so as to form a water-containing flue gas (4a) in order to heat the ammonia cracker (20). The invention is characterized in that at least part of the water-containing flue gas is cooled to below the dew point during the pretreatment (10) of ammonia, condensed water and heated ammonia being obtained.
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: WO2025248230A1
A membrane-electrode assembly for a water electrolyser is provided. The membrane-electrode assembly comprises a polymer electrolyte membrane with a first major surface and a second major surface, and an anode component in contact with the first major surface of the polymer electrolyte membrane. The anode component comprises (i) a porous framework of polymer fibres at least partially coated with a metal-containing thin film; and (ii) an oxygen evolution reaction (OER) catalyst supported on the porous framework of polymer fibres.
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: 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: 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: 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: 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: 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: 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: 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: JP2025176442A
【課題】本発明は、水素を高収率及び高生成量で生成し得る手段を提供する。【解決手段】本発明の一態様は、粉体の形態の水素化マグネシウム及び粉体の形態のクエン酸を含み、水素化マグネシウムに対するクエン酸の質量比が2.5から3.5の範囲であり、加圧成型物の形態である、水素生成組成物に関する。本発明の別の一態様は、水素生成組成物の製造方法及び水素の生成方法に関する。【選択図】なし
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: US2025369125A1
Methods and systems are disclosed for using industrial waste for the production of hydrogen gas. The method includes examining a pH level of the industrial waste, removing contaminate from the industrial waste, conditioning and concentrating the industrial waste to a proton-rich solution, and using the resulting proton-rich solution as the proton source in a hydrogenase catalyzed hydrogen production system.
Nº publicación: US2025369134A1 04/12/2025
Solicitante:
CITY UNIV OF HONG KONG [CN]
City University of Hong Kong
Resumen de: US2025369134A1
A liquid-assisted chemical vapor deposition method for preparing hierarchical Ni/NiO@Ru—NC nanotube arrays includes forming Ni/NiO@Ru—NC on surfaces of the NF with single-atom Ru anchored on N-doped carbon (Ru—NC) nanotube and Janus Ni/NiO NPs encapsulated on the tips. The forming Ni/NiO@Ru—NC includes pretreating the NF; creating a CH3CN/RuCl3/Ar atmosphere in the tube furnace to in-situ grow the Ni/NiO@Ru—NC nanotube arrays on the pretreated NF. The bifunctional Ni/NiO@Ru—NC electrocatalyst exhibits overpotentials of 88 m V and 261 m V for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) at 100 mA cm−2 in alkaline solution, respectively. Meanwhile, the bifunctional Ni/NiO@Ru—NC can stably operate an anion-exchange membrane water electrolysis (AEMWE) system for 50 hours under 500 mA cm−2 at a voltage of 1.95±0.05 V in a 1.0 M KOH solution at room temperature. An overall water-splitting electrolyzer can be efficiently driven by a solar cell.