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958
resultados
Última actualización
08/06/2025 [07:00:00]
Resultados 100 a 125 de 958
Resumen de: US2025162866A1
A method for producing hydrogen using a feed stream comprising ammonia is provided. The method can include the steps of: heating the feed stream in a first heat exchanger to produce a heated feed stream, wherein the heated feed stream is at a temperature above 500° C.; introducing the heated feed stream into a first reaction zone under conditions effective for catalytically cracking the heated feed stream to produce a raw hydrogen stream, wherein the raw hydrogen stream comprises hydrogen and nitrogen; cooling the raw hydrogen stream by indirect heat exchange against a first cooling fluid to form a cooled hydrogen stream; and purifying the raw hydrogen stream to produce a hydrogen product stream and a tail gas, wherein the tail gas has a higher concentration of nitrogen as compared to the hydrogen product stream.
Resumen de: US2025161923A1
Tantalum nitride and specifically a novel Ta3N5 nanoparticles, such as single crystalline Ta3N5 nanoparticles, are disclosed. The nanoparticles used with a co-catalyst is further disclosed. The present invention also relates to Ta3N5 nanoparticles modified with a metal oxide, such as a CoOxcocatalyst, wherein Ox represents an oxide that is part of the cobalt oxide. A catalyst, such as for water oxidation to produce O2, is disclosed. The nanoparticles can further be modified to include a water reducing catalyst. A water splitting catalyst is further disclosed. Methods of making the nanoparticles and catalyst are also disclosed. Methods to split water utilizing the catalyst are further described.
Resumen de: US2025163597A1
A method of operating an electrolyzer system includes providing steam from a steam source through a system steam conduit to module steam conduits located in respective electrolyzer modules, controlling a flow rate of the steam through the system steam conduit using a system mass flow controller located on the system steam conduit, providing portions of the steam to the module steam conduits and providing steam in the module steam conduits to respective stacks of electrolyzer cells located in respective hotboxes in the respective electrolyzer modules, and operating the stacks to generate a hydrogen product stream and an oxygen exhaust stream.
Resumen de: US2025163594A1
An electrolyzer system includes stacks of electrolyzer cells configured receive steam and air, and output a hydrogen product stream and an oxygen exhaust stream, and a first heat pump configured to extract heat from the oxygen exhaust stream to generate a first portion of the steam provided to the stacks.
Resumen de: US2025163593A1
A wind power plant is provided, including: one or more generator devices for generating electrical power from wind power; a plurality of hydrogen production units for producing hydrogen from the generated electrical power; a plurality of DC-DC converters each being electrically connected with the one or more generator devices and with a respective one of the plurality of hydrogen production units, and each DC-DC converter being configured for supplying power with a tunable output voltage to the respective hydrogen production unit; and a control device for controlling the power supplied by each DC-DC converter to the respective hydrogen production unit based on a current power output of the one or more generator devices. With the proposed wind turbine plant the supply of power to the plurality of hydrogen production units can be improved.
Resumen de: US2025163586A1
The invention relates to a method for operating an electrolysis plant having an electrolyser for generating hydrogen (H2) and oxygen (O2) as product gases, with water being supplied as starting material and being split at a proton-permeable membrane into hydrogen (H2) and oxygen (O2), a product gas stream being formed in a phase mixture comprising water (H2O) and a relevant product gas, and a product gas stream being supplied to a gas separator arranged downstream of the electrolyser, characterized in that the fluoride release of the membrane is determined on the basis of the operating time, the temporal progression of the fluoride concentration being ascertained, with a measure for the operation-induced degradation of the proton-permeable membrane being ascertained as the result of a release of fluoride. The invention furthermore relates to a corresponding electrolysis plant and to a measuring device for carrying out the method.
Resumen de: WO2025106146A2
One embodiment is directed to an integrated energy storage and distribution system, comprising: an electrolysis module configured to utilize intake electricity and intake water to output hydrogen gas, oxygen, and surplus water; a metal hydride hydrogen storage module configured to controllably store, or alternatively release, hydrogen gas; a fuel cell module configured to controllably intake hydrogen gas and output electricity and water vapor; and a computing system operatively coupled to the electrolysis module, storage module, and fuel cell module and configured to coordinate operation of these modules relative to each other; wherein the electrolysis, storage, and fuel cell modules are thermally coupled such that heat energy released from one or more modules which may be at least transiently exothermic may be utilized by one or modules which may be at least transiently endothermic.
Resumen de: WO2025104825A1
This electrolysis cell (10) is provided with: a support substrate (12) that has a first through hole (40a); and a hydrogen electrode collector layer (13) that has a first embedded part (70a) which is embedded in the first through hole (40a). A first layered part (80) includes a first gap (81) that is in contact with a first surface (T1) of the support substrate (12), the first surface being on the hydrogen electrode active layer (14) side. The first embedded part (70a) includes a first gap (71a) that is in contact with the inner peripheral surface (T1) of the first through hole (40a). The first gap (71a) extends along the thickness direction of the support substrate (12).
Resumen de: WO2025105666A1
The present invention relates to an apparatus for manufacturing a water electrolysis membrane and method for manufacturing a water electrolysis membrane using same, and can provide a water electrolysis membrane having excellent physical properties, such as low sheet resistance, low hydrogen permeability, and excellent durability, compared to conventional commercial membranes.
Resumen de: WO2025104823A1
An electrolytic cell device (1) is provided with a current collector member (25) and an electrolytic cell (10) that is electrically connected to the current collector member (25). The electrolytic cell (10) is provided with a hydrogen electrode current collector layer (13), a support substrate (12) that is embedded within the hydrogen electrode current collector layer (13) and has through-holes (40), and a hydrogen electrode active layer (14) disposed on the hydrogen electrode current collector layer (13). The current collector member (25) includes overlapping parts (25a) that overlap the through-holes (40) in a thickness direction, and non-overlapping parts (25b) that do not overlap the through-holes (40) in the thickness direction. The density of the overlapping parts (25a) is greater than the density of the non-overlapping parts (25b).
Resumen de: WO2025104826A1
In the present invention, an electrolysis cell (10) is provided with: a support substrate (12) having a through-hole (40); a hydrogen-pole current collector layer (13) having an embedded section (70) which is embedded in the through-hole (40), and a first layer section (80) continuous with the embedded section (70) and disposed above the support substrate (12); and a hydrogen-pole active layer (14) disposed above the hydrogen-pole current-collector layer (13). The first layer section (80) includes a void (81) that adjoins a first surface (T1) on the hydrogen-pole active layer (14) side of the support substrate (12).
Resumen de: WO2025104824A1
An electrolysis cell (10) is provided with: a support substrate (12) having a through hole (40); a hydrogen electrode current collector layer (13) having an embedded part (70) embedded in the through hole (40); a hydrogen electrode active layer (14) disposed on the hydrogen electrode current collector layer (13); an oxygen electrode layer (17); and an electrolyte layer (15) disposed between the hydrogen electrode active layer (14) and the oxygen electrode layer (17). The embedded part (70) includes a cavity (71a) that is in contact with a first end region (43) of an inner peripheral surface (41) of the through hole (40).
Resumen de: WO2025103494A1
The present invention relates to the field of water electrolysis and hydrogen production. Disclosed is a carbon nanotube-supported nitrogen-doped catalyst. The catalyst has a carbon nanotube structure as a support, and cobalt and ruthenium as active components, wherein the content of the cobalt element is 30-45w%, the content of the ruthenium element is 1-7wt%, and the proportion of the ruthenium element present in the form of RuN is 60-90wt% relative to the total ruthenium element. A graphitized structure of the catalyst is conducive to charge conduction, Ru is uniformly loaded on the surface of the support by means of a low-temperature reduction process and interaction with defect sites on the surface of the support, and then after high-temperature roasting, Ru interacts with the N element and the metal Co, thereby improving the hydrogen evolution catalytic activity of the catalyst.
Resumen de: WO2025103558A1
Porous hydrophilic separator, its method of production, and an alkaline electrolyzer with such separator In an alkaline electrolyzer (12), especially for production of hydrogen gas, the separator (11) has larger pores in layers (8, 9) on its outer sides (7A, 7C), facing the electrodes (13, 14), than in the bulk layer (10). In a practical embodiment, the separator (11) is composed of two diaphragms (7, 7'), each with asymmetric pore structure, where the diaphragms (7, 7') are oriented such that largest pores are on the outer sides of the sep- arator (11).
Resumen de: US2025163830A1
An energy storage system converts variable renewable electricity (VRE) to continuous heat at over 1000° C. Intermittent electrical energy heats a solid medium. Heat from the solid medium is delivered continuously on demand. An array of bricks incorporating internal radiation cavities is directly heated by thermal radiation. The cavities facilitate rapid, uniform heating via reradiation. Heat delivery via flowing gas establishes a thermocline which maintains high outlet temperature throughout discharge. Gas flows through structured pathways within the array, delivering heat which may be used for processes including calcination, hydrogen electrolysis, steam generation, and thermal power generation and cogeneration. Groups of thermal storage arrays may be controlled and operated at high temperatures without thermal runaway via deep-discharge sequencing. Forecast-based control enables continuous, year-round heat supply using current and advance information of weather and VRE availability. High-voltage DC power conversion and distribution circuitry improves the efficiency of VRE power transfer into the system.
Resumen de: US2025163587A1
An electrolyzer or unitized regenerative fuel cell has a flow field with at least one channel, wherein the cross-sectional area of the channel varies along at least a portion of the channel length. In some embodiments the channel width decreases along at least a portion of the length of the channel according to a natural exponential function. The use of this type of improved flow field channel can improve performance and efficiency of operation of the electrolyzer device.
Resumen de: US2025163592A1
A wind-powered electrolysis arrangement is provided including a plurality of wind turbines of an offshore wind park; a distributed electrolyzer plant including a plurality of electrolyzers, wherein each electrolyzer is arranged on a wind turbine platform; a balance of plant of the distributed electrolyzer plant, installed on a main platform in the wind park; and a plurality of product pipelines, wherein each product pipeline is arranged to convey a number of products between the balance of plant and a distributed electrolyzer. A method of operating such a wind-powered electrolysis arrangement is also provided.
Resumen de: WO2025104428A1
The invention provides a device for hydrogen production comprising a reaction chamber containing one or more catalysts disposed therein, a fuel gas inlet, and a hydrogen-rich gas outlet; a first reactant gas chamber having a first reactant gas inlet for conveying a first reactant gas and being in fluid communication with an exhaust; and a second reactant gas chamber having a second reactant gas inlet for conveying a second reactant gas; wherein the reaction chamber and the first reactant gas chamber share a first wall therebetween, the first wall comprising a thermally conductive substrate having a reaction chamber face and a first reactant gas chamber face, wherein the first reactant gas chamber face of the first wall has a reaction surface which is coated with a reactant gas decomposition catalyst; wherein the first reactant gas chamber further comprises a second wall opposite the first wall defining a volume therebetween, the second wall being shared between the first reactant gas chamber and the second reactant gas chamber; wherein the second wall comprises one or more apertures disposed in an aperture-containing area along a length and width of the second wall such that the second reactant gas chamber and the first reactant gas chamber are in fluid communication with one another, wherein the aperture-containing area has a first section, a second section, and a third section, the first section being a third of the aperture-containing area distal to the fuel gas inlet and
Resumen de: WO2025104195A1
The present invention relates to a process for the preparation of an electrode or a precursor thereof comprising sulfurizing a metal layer deposited on an electrode substrate, said metal layer comprising nickel, iron or a mixture of iron with nickel or cobalt. The invention also relates to the electrode or a precursor thereof obtainable by said process, the use thereof in electrocatalysis, for instance in alkaline water electrolysis, and to a device comprising said electrode.
Resumen de: WO2025103851A1
The invention relates to a method for operating an electrolysis plant (1) comprising at least one stack (2) which has a plurality of electrolysis cells and has an anode (3) and a cathode (4), wherein in normal operation of the electrolysis plant (1), water is supplied to the anode (3) via a water circuit (5) having an integrated pump (6), said water being split in the at least one stack (2) into hydrogen and oxygen by electrolysis, and wherein the hydrogen produced by electrolysis is discharged via a cathode outlet (9) of the stack (2) and a media line (7) connected to said cathode outlet. According to the invention, a reduced stack flow is maintained when the electrolysis plant (1) is shut down and, by means of the stack flow and a cell-side recombination catalyst (10), oxygen present on the anode side is recombined with hydrogen, which diffuses from the cathode side to the anode side, to form water. The invention further relates to an electrolysis plant (1) that is suitable for carrying out the method or can be operated according to the method.
Resumen de: WO2025104097A1
Process for the production of a fuel. In a conversion step carbon dioxide is reacted with hydrogen to form a liquid carrier. The carbon dioxide is for instance collected with a direct air capture system. The hydrogen can for example be generated using renewable sources. After storage and transport to a site of use, the liquid carrier is mixed with water to form a ready mix. During a break-up step, the liquid carrier is converted to a fuel while the temperature and the pressure of the ready mix are maintained at sub- or supercritical conditions.
Resumen de: WO2025103030A1
Disclosed in the present invention are an electrolytic hydrogen production system capable of continuously adapting to power supply fluctuation, and an electrolytic hydrogen production method. An electrolytic cell of the electrolytic hydrogen production system comprises n electrolytic sections (6); each electrolytic section (6) comprises 2y electrolytic chambers (5), two cathode end plates (2) and an anode middle plate (1); the two cathode end plates (2) are located at two ends of the electrolytic section (6), and the anode middle plate (1) is located in the middle of the electrolytic section (6); each electrolytic section (6) is divided into a left part and a right part, and each part comprises y electrolytic chambers (5), wherein n is greater than 1, y is greater than 1, and the n electrolytic sections (6) are continuously arranged in series from 1 to n. The electrolytic cell of the electrolytic hydrogen production system of the present invention comprises n electrolytic sections (6), and the temperature of an electrolyte in each electrolytic section (6) of the electrolytic cell is constant during operation, so that the electrolytic hydrogen production system of the present invention can be continuously regulated and controlled in a fluctuating power supply state, has high adaptability, is more adaptable to variable and fluctuating power supply input conditions, and has better safety performance.
Resumen de: WO2024013139A1
The invention relates to a facility comprising: - a series of n electrolysers (4) designed to electrolyse water (1) and produce a hydrogen-aqueous solution mixture (5), the series having an overall capacity greater than 40 MW; - a gas-liquid separation device (8) configured to remove the aqueous solution contained in the mixture (5) produced by the series of n electrolysers (4) and produce a hydrogen stream (9). The gas-liquid separation device (8) comprises two flow conveying lines (21, 22) arranged one above the other; either or both of the two conveying lines being supplied with the mixture (5) and the two conveying lines being in fluid communication with one another via one or more segments (23) so that the hydrogen passes from the lower line (22) to the upper line (21) and/or the aqueous solution passes from the upper line to the (21) lower line (22).
Resumen de: CN119497764A
The present invention relates to a method for operating a high temperature solid oxide electrolysis system suitable for converting a fuel stream into a product stream and a system for implementing the method. The method includes drying the moist purge gas and using the waste purge gas as a regeneration gas in the drying unit.
Nº publicación: EP4555123A1 21/05/2025
Solicitante:
HITACHI ENERGY LTD [CH]
Hitachi Energy Ltd
Resumen de: WO2024041728A1
A control unit (40) for a Power-to-Hydrogen (PtH) plant (100) is provided. The control unit (40) includes at least one model (41) and is configure to: calculate maximum efficiency point tracking of the PtH plant (100) by solving an objective function having a predetermined hydrogen production rate of the PtH plant or a predetermined amount of energy input to the PtH plant using the at least one model, wherein the control unit receives measured parameters indicative of status of components of the PtH plant as an input to the at least one model; determine one or more set points for a coordinated operation of the components of the PtH plant based on a solution obtained by solving the objective function; and provide the one or more set points to one or more of the components of the PtH plant to operate the PtH at the maximum efficiency point.
BOPI
Sede Electrónica
