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1002
resultados
Última actualización
01/07/2025 [07:02:00]
Resumen de: CN115485066A
A catalytic material and a method of making the catalytic material are described. The use of the catalytic material in catalyzing ammonia decomposition processes is also described. The catalytic material comprises a metal oxide and a metal M selected from the group consisting of Ru, Fe, Co, Mo, and mixtures of two or more thereof, and is particularly active in the catalytic decomposition of ammonia, even at low temperatures.
Resumen de: AU2023391802A1
The present invention pertains to an ammonia decomposing catalyst and a method for producing same. More specifically, the present invention pertains to: an ammonia decomposing catalyst containing an MgAl
Resumen de: WO2025131283A1
The invention relates to a method, a system and the use thereof. According to the invention, hydrogen and oxygen are generated by means of a water-borne platform and, for example, the hydrogen and oxygen so produced are transported ashore and compressed and/or further compressed there.
Resumen de: WO2025135328A1
The present invention relates to a water electrolysis system comprising: a hydrogen (H2) removal device; and an oxygen (O2) removal device, wherein the hydrogen (H2) removal device removes, from an oxygen (O2) stream, hydrogen (H2), and the oxygen (O2) removal device removes, from a hydrogen (H2) stream, oxygen (O2). By removing hydrogen (H2) and oxygen (O2) from the respective gas streams, the likelihood of explosion accidents during the movement of the gas streams is remarkably reduced, and the purity requirements of various industrial gases can be satisfied without a separate purification process.
Resumen de: WO2025132521A1
The present invention refers to an electrochemical system comprising: i. an electrolyte, preferably a liquid electrolyte, more preferably an aqueous electrolyte, comprising a stabilizing anion, wherein said electrolyte comprises > 10 mol/mol % of water; ii. a redox mediator electrode comprising Ga(0) or alloys thereof; iii. a cathode; iv. an anode; and v. a wavefunction generator to alternately polarize the electrical connection between the redox mediator electrode and the cathode or anode; wherein the redox mediator electrode is electrically connected with the cathode and the anode, provided that the anode and the cathode are not electrically connected with each other. The gallium-based redox mediator electrode permits the nearly complete reversibility between dissolution and electroplating of gallium, thus cathodic and anodic reactions can be carried out in an alternating manner by electrically connecting the redox mediator electrode with the cathode or the anode. The present invention also refers to a method for the electrochemical production of H2, and oxidized species, such as O2 and/or Cl2 or H+, with the electrochemical system of the invention. Therefore, the present invention may find application in fuel production, e.g. in combination with fuel cells or internal combustion engines, or in chemical reactions such as hydrogenation reactions, reversible H2 production and H2 oxidation, hydrotreating reactions, hydrocracking reactions, hydroisomerisation reactions, oil
Resumen de: WO2025132365A1
The invention relates to a device/method for capturing/converting CO2, comprising/using a CO2 capturing unit (2), a water electrolysis unit (5), an RWGS unit (8), an FT unit (13), a unit for converting by-products into syngas (28) and a hydrogen unit (20), in which a carbon dioxide separation unit (34) is arranged to: treat a first syngas (12) and a second syngas (29); produce a gaseous effluent depleted in carbon dioxide (18) and a gaseous effluent rich in carbon dioxide (35); and recycling the gaseous effluent rich in carbon dioxide (35) to the inlet of the RWGS section (8).
Resumen de: WO2025131874A1
The invention relates to a system (120) consisting of at least two catalyzers (100), in particular for use in electrochemical cell devices (10), preferably fuel cell devices (10), wherein the at least two catalyzers (100) are fluidically connected in series, and each of the at least two catalyzers (100) has a catalytically active material (108), each of which is provided on a main part (102). At least one first catalyzer (100a), which is arranged first in the flow direction, has a protective material (110), which is designed to bind chromium and is provided on the main part (102). According to the invention, the first catalyzer (100a) is designed to oxidize hydrogen, and a second catalyzer (100b), which is arranged after the first catalyzer (100a) in the flow direction, is designed to oxidize methane.
Resumen de: WO2025129214A1
The invention relates to an electrolyser for alkaline hydrogen electrolysis, comprising: a direct voltage source, in particular a rectifier (1) having an electrical positive pole (2) and an electrical negative pole (3); media inlet lines (4) for an electrolysis medium; and media outlet lines (5) for product media; wherein a plurality of electrolysis blocks (6) which are connected in series via electrical connecting lines (9) are connected between the positive pole (2) and the negative pole (3), wherein the electrolysis blocks (6) each have a number of electrolysis cells (7) which are electrically connected in series and are mechanically clamped so that they are flush with one another, wherein the media inlet lines (4) and the media outlet lines (5) each extend serially through the electrolysis blocks (6) and are distributed within each individual electrolysis block (6) to individual cell inlet lines (4', 4") and individual cell outlet lines (5', 5") of the electrolysis cells (7).
Resumen de: WO2025131721A1
The invention relates to a method for producing an electrolysis assembly comprising at least one housing with an interior, and with at least one stack assembly disposed in the interior of the housing, the stack assembly comprising a plurality of electrolytic cells stacked in a stacking direction, at least some of the electrolytic cells each comprising a membrane electrode assembly and an interconnector, and the membrane electrode assembly and the interconnector each having an oxygen side and a hydrogen side, wherein, in a preparation step for producing membrane electrode assemblies, at least one pasty layer is applied to each of the two surfaces of an electrolyte membrane, at least one of the layers on one surface being used to form a first electrode formed on the hydrogen side of the membrane electrode assemblies and at least one of the layers on the other surface being used to form a second electrode formed on the oxygen side of the membrane electrode assemblies, in a preparation step a seal material comprising glass and/or glass-ceramic is applied to the interconnectors, in an assembling step the prepared interconnectors and membrane electrode assemblies are stacked in alternation to form a stack, and in an assembling step the stack is joined under the action of thermal energy and of a mechanical clamping force which is applied to the stack inwardly in the stacking direction.
Resumen de: WO2025131661A1
The invention relates to an electrolysis assembly comprising at least one housing with an interior and at least one stack assembly in the interior of the housing. The stack assembly comprises a plurality of electrolysis cells stacked in a stacking direction, and at least some of the electrolysis cells comprise a respective membrane electrode assembly and a respective interconnector, wherein the membrane electrode assembly and the interconnector each have an oxygen side and a hydrogen side, and at least some of the electrolysis cells have contact elements between the membrane electrode assembly and the interconnector, said contact elements being designed to be viscous in an operating state of the electrolysis assembly and solid in a rest state of the electrolysis assembly.
Resumen de: WO2025131585A1
The invention relates to a hydrogen production facility (222) comprising a hydrogen recirculation assembly (100, 200). The hydrogen production facility (222) comprises at least one main compressor (226, 426) which is fluidically connected to at least one electrolyzer (224, 424) via a main hydrogen flow fluid network (232), wherein the hydrogen recirculation assembly (100, 200) comprises a first fluid inlet (102, 202) which can be connected to a first hydrogen leakage point (240) of the hydrogen production facility (222) and which is connected to at least one collecting container (106, 206) of the hydrogen recirculation assembly (100, 200) via at least one first fluid connection (110, 210); a second fluid inlet (104, 204) which can be connected to a second hydrogen leakage point (242) of the hydrogen production facility (222) and which is connected to the collecting container (106, 206) via at least one second fluid connection (112, 212); at least one recirculation compressor (108, 208) which is connected to the collecting container (106, 206) via at least one third fluid connection (114), and at least one first fluid outlet (118, 218) which can be connected to a main hydrogen flow fluid network (232) of the hydrogen production facility (222) and which is connected to the recirculation compressor (108, 208) via at least one fourth fluid connection (116).
Resumen de: WO2025131681A1
The invention relates to an electrolysis assembly comprising a stack assembly. At least some of the interconnectors are designed in the form of substantially rectangular single-layer sheet-metal structures, the first face of which defines the hydrogen side of the interconnector and the second face of which defines the oxygen side of the interconnector, wherein the thickness of the interconnectors in the form of sheet-metal structures ranges from 0.3 to 0.8 mm, and at least some of the interconnectors have a reactant gas manifold opening in a first edge region in order to conduct reactant gas and a product gas manifold opening in a second edge region lying opposite the first edge region in order to conduct product gas. Between the membrane electrode assembly and the interconnector of at least some of the electrolysis cells is a reactant gas line structure designed to conduct reactant gas out of the reactant gas manifold structure along the hydrogen side of the membrane electrode assemblies and to the product gas manifold structure, and the reactant gas line structure has a plurality of flow channels, each of which is laterally delimited by means of two mutually spaced channel webs, at least some of the channel webs having, on average, an edge steepness of >= 85° at at least one surface which delimits a flow channel.
Resumen de: WO2025131626A1
The invention relates to an electrolysis assembly (10) comprising a stack assembly (16). The stack assembly (16) is equipped with precisely one reactant gas manifold structure (66) in order to provide reactant gas to the electrolysis cells (18) and precisely one product gas manifold structure (68) in order to discharge product gas from the electrolysis cells (18). The stack assembly (16) has a reactant gas opening for introducing reactant gas into the reactant gas manifold structure (66) and a product gas opening for discharging product gas out of the product gas manifold structure (68). The reactant gas manifold structure (66) and the product gas manifold structure (68) are formed within the stack assembly (16), in each case by means of manifold openings introduced into the interconnectors, wherein between the membrane electrode assembly and the interconnector of at least some of the electrolysis cells is a reactant gas line structure designed to conduct reactant gas out of the reactant gas manifold structure along the hydrogen side of the membrane electrode assemblies and to the product gas manifold structure, and at least some of the membrane electrode assemblies have an oxygen-permeable structure on the oxygen side, said oxygen-permeable structure being positioned and designed such that oxygen released on the oxygen side of the membrane electrode assembly can be discharged into the interior of the housing (12).
Resumen de: WO2025137083A1
An electrolyzer for gaseous production such as hydrogen gas includes an oscillating electrode driven at a natural frequency of the gaseous bubbles improves output by readily removing the gaseous bubble product from the electrode surface, thereby exposing greater electrode surface area for subsequent electrolysis reactions. A natural frequency of the gaseous product determines an oscillation frequency with which to drive the electrode accumulating the gaseous product, such as hydrogen bubbles, to agitate and release the bubbles which then rise to the surface of the liquid filled containment. Integrating oscillation logic for agitating the otherwise stationary electrode or cathode in a PEM water electrolyzer improves hydrogen production by readily evacuating the generated hydrogen to free up the electrode area for additional electrolysis reactions.
Resumen de: WO2025135565A1
The present invention relates to a composite water electrolysis system using nuclear power plant heat and electrical energy, and, to a composite water electrolysis system for receiving heat energy and electrical energy generated in each of a plurality of SMRs, the system comprising: a heat energy storage hub for storing the heat energy generated in each of the plurality of SMRs; an electrical energy storage hub for storing electrical energy generated in each of the plurality of SMRs; and a composite hydrogen production unit, which receives heat and electricity from the heat energy storage hub and the electrical energy storage hub so as to generate hydrogen and oxygen. According to one embodiment, technologies such as hydrogen production through high-temperature water electrolysis, low-temperature water electrolysis, and ammonia decomposition are diversified, hydrogen and oxygen produced through high-temperature water electrolysis are in a high-temperature state, and the waste heat energy discarded when hydrogen and oxygen are cooled to a low temperature in order to be stored can be used as an additional heat source of low-temperature water electrolysis and ammonia hydrogen decomposition devices.
Resumen de: US2025205696A1
Described herein relates to a method that may be used for synthesizing a bifunctional electrocatalyst for electrochemical water splitting. The method may involve anodically converting an electrodeposited iron-nickel alloy film into an iron-nickel-oxygen nanofilm, followed by sequential phosphorization and/or selenylation treatments via chemical vapor deposition to form a quaternary iron-nickel phosphoselenide nanoporous film. This self-supported catalyst can facilitate both hydrogen evolution and oxygen evolution reactions, improving electrolysis efficiency. The inclusion of selenium may enhance electrical conductivity and stabilize catalytic performance, while the nanoporous structure can optimize mass transport. The film may be used as both anode and cathode in a two-electrode electrolyzer, enabling hydrogen production from pure water or seawater. Notably, the catalyst can demonstrate high turnover frequency and low overpotential, potentially surpassing conventional noble-metal-based catalysts. The system's stability under prolonged operation may underscore its potential for scalable hydrogen generation, reducing reliance on fossil fuels and advancing renewable energy applications.
Resumen de: US2025205656A1
An apparatus, includes: a first raw material supply unit 110 including a filter housing 111, a supply fan 112, a flow regulator 113, an electronic valve 114, and an air supply line 115, wherein the supply fan 112 is operated to suck in external air, in the process, the HEPA filter (not shown) mounted inside the filter housing 112 filters fine dust and adjusts the air supply flow rate from the flow regulator 113 to the appropriate flow rate and supplies through the supply line 115 to the ion generator 200; a second raw material supply unit 120 including a pressure regulator 122, a flow regulator 123, an electronic valve 124, and an air supply line 125.
Resumen de: US2025206621A1
A silica material has a substrate containing silicon dioxide, and has a sulfonate group on at least a surface of the substrate, or is obtained by bringing a sulfonating agent into contact with a substrate containing silicon oxide.
Resumen de: US2025207278A1
An object of the present invention is to provide a water electrolysis method capable of maintaining a high electrolysis efficiency. The present invention proposes a water electrolysis method, including supplying water to an electrolysis cell whose interior is divided into an anode and a cathode by an electrolyte membrane, and electrolyzing the water, to generate oxygen at the anode and hydrogen at the cathode, wherein the electrolyte membrane includes: a first layer containing a polymer electrolyte; and a second layer containing carbon particles, and provided on the side of the cathode of the first layer.
Resumen de: US2025207279A1
A method for operating an electrolysis device, having a converter which is connected on an AC voltage side to an AC voltage grid via a decoupling inductance and draws an AC active power from the AC voltage grid, and an electrolyzer, which is connected to the converter on the DC voltage side, is provided. The method includes operating the electrolysis device, when a grid frequency corresponds to a nominal frequency of the ACT voltage grid and is substantially constant over a time period, with an electrical power which is between 50% and 100% of a nominal power of the electrolyzer, and operating the converter in a voltage-impressing manner, such that an AC active power drawn from the AC voltage grid is changed on the basis of a change and/or a rate of change of the grid frequency in the AC voltage grid.
Resumen de: US2025207277A1
A catalytic material comprising at least one group VIB metal at least partly in sulfide form, at least one group IVB metal at least partly in sulfide form, and an electrically conductive support wherein said group VIB metal is chosen from molybdenum and/or tungsten, said group IVB metal is chosen from titanium, zirconium and/or hafnium.
Resumen de: US2025207274A1
An electrode for water electrolysis cell includes a conductive base, a first layer, and a second layer. The conductive base includes a transition metal. The first layer is disposed on the conductive base, and includes two or more transition metals and oxygen. The second layer is disposed on the first layer and includes a layered double hydroxide (LDH) including two or more transition metals. The first layer is disposed between the conductive base and the second layer in a thickness direction of the first layer. The first layer includes a first transition metal that is the same as the transition metal included in the conductive base, and a second transition metal that is the same as the transition metal included in the second layer and different from the first transition metal. The first transition metal exists in the first layer at a concentration higher than a concentration of the first transition metal in the second layer.
Resumen de: US2025207266A1
A water electrolysis cell has: an oxygen generating electrode; a hydrogen generating electrode; and a membrane, and electrolyzes water to generate oxygen on the oxygen generating electrode and generate hydrogen on the hydrogen generating electrode. A control device includes: a potential-maintaining mode where the water electrolysis cell is supplied with electric current; and a complete stop mode where the water electrolysis cell is shut out from electric current supply, each of the modes is optionally implemented during an operation stop, wherein which of the modes is implemented is determined based on a duration time of the operation stop, a first deterioration rate of the water electrolysis cell when the complete stop mode is implemented, and a second deterioration rate of the water electrolysis cell when the potential-maintaining mode is implemented.
Resumen de: US2025210678A1
An electrochemical cell module includes a module housing and electrochemical cells located in the module housing and configured to generate power or hydrogen and to output an exhaust. The module also includes a vent housing attached to the module housing, an exhaust duct located in the vent housing, and a filter cartridge located in the exhaust duct. The exhaust duct contains an inlet that is configured to receive the exhaust from the module housing, and an outlet that is configured to direct the exhaust away from the module housing. The filter cartridge contains a particulate filter.
Nº publicación: DE102023213299A1 26/06/2025
Solicitante:
BOSCH GMBH ROBERT [DE]
Robert Bosch Gesellschaft mit beschr\u00E4nkter Haftung
Resumen de: DE102023213299A1
Die Erfindung betrifft ein Verfahren zum Rückführen von Kathodenmedium (7) in einem Elektrolyseuraggregat (1), insbesondere einem PEM- oder AEM-Elektrolyseuraggregat (1), wobei zeitlich vor einem Wiedereinspeisen des einen Elektrolysezellenstapel (10) des Elektrolyseuraggregats (1) verlassenden Kathodenmediums (7) in ein Mediumreservoir (23) einer Mediumversorgung (20) des Elektrolyseuraggregats (1), ein im Kathodenmedium (7) vorliegender Wasserstoff (8) abgetrennt wird, und ferner zeitlich vor dem Wiedereinspeisen des Kathodenmediums (7) in das Mediumreservoir (23), in einem Verdünnschritt (V) des Rückführverfahrens dem Kathodenmedium (7) frisches Versorgungsmedium (3) zugeführt und derart eine Konzentration von Wasserstoff (8) im Kathodenmedium (7) verringert wird.
BOPI
Sede Electrónica
