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764
resultados
Última actualización
21/11/2025 [06:57:00]
Resumen de: EP4650904A1
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.
Resumen de: EP4650492A1
Provided is an electrolysis system (100) including an electrolysis module (10); a water vapor supply system (40) that supplies water vapor to a hydrogen electrode; a hydrogen recovery system (50) that recovers hydrogen-enriched water vapor; an air supply system (20) that supplies air to an oxygen electrode; an oxygen recovery system (30) that recovers exhaust air; a hydrogen-enriched water vapor release system (60) that releases hydrogen-enriched water vapor from the hydrogen recovery system (50) into the atmosphere; an exhaust air release system (70) that releases exhaust air from the oxygen recovery system (30) into the atmosphere; a hydrogen-enriched water vapor discharge valve (63) disposed in the hydrogen-enriched water vapor discharge system (60); and an exhaust air discharge valve (73) disposed in the exhaust air discharge system (70), wherein the opening degrees of the hydrogen-enriched water vapor discharge valve (63) and the exhaust air discharge valve (73) are controlled to be adjustable when the electrolytic module (10) is stopped.
Resumen de: EP4650491A1
Provided is an electrolysis cell system with energy efficiency improved. An electrolysis cell system (10) includes: an electrolysis cell (11) that has an anode and a cathode and generates hydrogen on the cathode and oxygen on the anode by electrolyzing steam supplied to the cathode; a supply line (20) that supplies air that controls the temperature of the electrolysis cell (11), to the electrolysis cell (11); an exhaust line (30) through which the air exhausted from the electrolysis cell (11) flows; a circulation line (40) that guides the air exhausted to the exhaust line (30), to the supply line (20); and a supply air temperature control heat exchanger (28) that controls the temperature of the air to be supplied to the electrolysis cell (11).
Resumen de: DK202300028A1
In an electrolyser (1) stack for production of hydrogen gas, multiple bipolar electrically conducting metal seperator plates (21, 25) sandwich membranes. Each seperator plate has raised surface portions (50) towards the membrane (23), forming minor gas channels (40) between the seperator plate (21, 25) and the membrane (23) for transort of produced gas along the seperator plate (21, 25). Each structured area (30A, 30B) with the minor channels (40) is surrounded by a combination of an upper major channel (41) above and a lower major channel (47) below the first structured area (30A), as well as a first major channel (42) and second major channel (49) connecting the lower major channel (47) with the upper major channel (41) on a first and second side. Gas flow through the channels leads to circulation of electrolyte through and around the structured areas (30A, 30B).
Resumen de: CN120476092A
The invention relates to a method for producing hydrogen from ammonia, comprising: ammonia cleavage in which the ammonia is decomposed into hydrogen and nitrogen, the ammonia cleavage being carried out in a sequence of cleavage steps (13, 36, 17, 20), and a final cleavage stream (21) being obtained after the final cleavage step (20), the final ammonia cracking step (20) is carried out in an adiabatic manner and/or after the final cracking step, the final cracking stream (21) is quenched by direct mixing with water or steam.
Resumen de: EP4650488A1
The invention concerns a water electrolysis installation comprising:* a dioxygen separator (60) configured to separate a mixture of electrolyte and dioxygen (28B) and to obtain an electrolyte with dissolved dioxygen (61);* a dihydrogen separator (49) to separate a mixture of electrolyte and dihydrogen (28A) and to obtain an electrolyte with dissolved dihydrogen (51);* a recombination zone (32) configured to receive the electrolytes to produce, at a mixing region (68), a mixed electrolyte stream,The installation comprises a dihydrogen and/or dioxygen depleting system (70), comprising a catalyst configured to react dioxygen and dihydrogen dissolved in the mixed electrolyte stream, to produce a treated electrolyte stream (34) with reduced dioxygen and dihydrogen. The depleting system (70) is positioned in contact with the mixed electrolyte stream downstream of the mixing region (68) and upstream of the inlet of the electrochemical stack device.
Resumen de: EP4650493A1
The present invention relates to a method of preparing a composite material, in particular one useful as a catalyst in an electrolytic hydrogen evolution reaction and/or the oxygen evolution reaction and/or urea oxidation-assisted water electrolysis. Provided is a method of preparing a composite material, the method comprising the steps of:(i) electrochemically depositing material onto a substrate from a deposition solution comprising a nickel (II) salt and graphene oxide, to obtain a nickel-reduced graphene oxide composite material comprising nickel dispersed on reduced graphene oxide, said composite material being deposited on the substrate;(ii) after step (i), placing the substrate, having the nickel-reduced graphene oxide composite deposited thereon, in an alkaline solution along with a counter electrode; and(iii) after step (ii), partially electrochemically oxidising the nickel, to obtain a partially oxidised nickel-reduced graphene oxide composite material comprising partially oxidised nickel dispersed on reduced graphene oxide, said composite material being deposited on the substrate.The composite of the invention demonstrates high catalytic activity for electrolytic hydrogen production under alkaline water electrolysis conditions (for example, a hydrogen evolution current of up to 500 mA cm<sup>-2</sup> at -1.35 V against a Reversible Hydrogen Electrode). High activity is demonstrated even when the substrate (on which the composite is deposited) does not c
Resumen de: EP4650488A1
The invention concerns a water electrolysis installation comprising:* a dioxygen separator (60) configured to separate a mixture of electrolyte and dioxygen (28B) and to obtain an electrolyte with dissolved dioxygen (61);* a dihydrogen separator (49) to separate a mixture of electrolyte and dihydrogen (28A) and to obtain an electrolyte with dissolved dihydrogen (51);* a recombination zone (32) configured to receive the electrolytes to produce, at a mixing region (68), a mixed electrolyte stream,The installation comprises a dihydrogen and/or dioxygen depleting system (70), comprising a catalyst configured to react dioxygen and dihydrogen dissolved in the mixed electrolyte stream, to produce a treated electrolyte stream (34) with reduced dioxygen and dihydrogen. The depleting system (70) is positioned in contact with the mixed electrolyte stream downstream of the mixing region (68) and upstream of the inlet of the electrochemical stack device.
Resumen de: WO2024162841A1
An electrolyte solution comprising an electrolyte, wherein the electrolyte is used in an amount ranging between 1 wt% to 10 wt% of the electrolyte solution; an ionic liquid, wherein the ionic liquid is used in an amount ranging between 1 wt% to 5 wt% of the electrolyte solution; and a solvent, wherein the solvent is used in an amount ranging between 75 wt% to 99 wt% of the electrolyte solution.
Resumen de: PL448572A1
Przedmiotem zgłoszenia jest wysokociśnieniowy elektrolizer alkaliczny do produkcji wodoru i tlenu o ciśnieniu do 250 bar, na drodze procesu elektrolizy wody, po doprowadzeniu do anody i katody (elektrody) potencjału elektrycznego, a oba gazy są separowane pod wysokim ciśnieniem. Elektrolizer alkaliczny generujący wodór i tlen o ciśnieniu do 250 bar zbudowany z dwóch pokryw (2) zamykających konstrukcję elektrolizera z obu stron, zespołu ułożonych szeregowo elektrod bipolarnych (1), zespołu membran (3), gdzie pomiędzy każdymi sąsiadującymi ze sobą elektrodami bipolarnymi (1) umieszczona jest membrana (3) dzieląca przestrzeń pomiędzy elektrodami (1) na przestrzeń anodową i katodową elektrolizera i przestrzenie pomiędzy membraną (3) a sąsiadującymi elektrodami bipolarnymi (1) wypełnione są na obwodzie elektrod bipolarnych (1) wkładkami uszczelniającymi z materiału nieprzewodzącego (4), a membrana (3) uszczelniona jest między dociśniętymi do niej z obu stron wkładkami uszczelniającymi z materiału nieprzewodzącego (4).
Resumen de: CN120418004A
The present invention relates to an ammonia decomposition catalyst and a method for producing the same, and more particularly, to an ammonia decomposition catalyst comprising alumina (Al2O3), cerium (Ce), lanthanum (La), ruthenium (Ru), and potassium (K), and a method for producing the same.
Resumen de: CN120167017A
A process for co-production of carbon monoxide and hydrogen is discussed herein, the process comprising: (a) providing an electrochemical reactor having an anode, a cathode, and a hybrid conductive membrane positioned between the anode and the cathode; (b) introducing a first stream into the anode, wherein the first stream comprises a fuel; (c) introducing a second stream into the cathode wherein the second stream comprises carbon dioxide and water wherein carbon monoxide is electrochemically generated from carbon dioxide and hydrogen is electrochemically generated from water. In an embodiment, the anode and the cathode are separated by the membrane, and both are exposed to a reducing environment during the entire operating time.
Resumen de: CN115948757A
The invention provides an electrolytic bath which comprises a cathode end plate, a cathode insulating layer, an electrolytic unit, an anode insulating layer and an anode end plate which are sequentially arranged in the same direction, each small electrolysis chamber comprises a cathode plate, a cathode sealing ring, a cathode gas diffusion layer, a diaphragm, an anode gas diffusion layer and an anode plate which are sequentially arranged in the same direction, the cathode plate and the anode plate at the series connection part between the small electrolysis chambers are combined to form a bipolar plate, the cathode plate comprises a cathode surface, the anode plate comprises an anode surface, and the bipolar plate comprises a cathode surface and an anode surface; a concave area and an outer frame area are arranged on the cathode surface and the anode surface, the outer frame area is arranged around the concave area, a plurality of raised lines are arranged in the concave area, a diversion trench is formed between the raised lines, confluence trenches are arranged in the concave area at two ends of the diversion trench, and the confluence trenches are communicated with the diversion trench. According to the scheme, uniform diffusion of the electrolyte is realized.
Resumen de: AU2024285985A1
A method of producing a hydrogen stream and an oxygen stream and passing the hydrogen stream and the oxygen stream to a reverse water-gas shift reactor is described, the method comprising: providing a water stream to an electrolysis system configured to form: a hydrogen stream at a first pressure, and an oxygen stream at a second pressure; passing the hydrogen stream, a carbon dioxide stream, and the oxygen stream to the reverse water-gas shift reactor, wherein the first pressure is lower than the second pressure.
Resumen de: AU2025202385A1
The present invention is an adhesive-fixed electrolysis module comprising a single stack, the single stack having a separator, a pair of bipolar plates, a pair of gaskets, a pair of diffusion layers, a pair of electrodes, and a cell frame, wherein the bipolar plates, the gaskets, 5 the diffusion layers, and the electrodes are sequentially arranged on the cathode and anode sides, respectively, with respect to the separator, forming a symmetrical structure, wherein the separator, the bipolar plates, the gaskets, the diffusion layers, and the electrodes are stacked in a zero-gap manner within the cell frame, and wherein the bipolar plates are adhered and fixed to the cell frame using an adhesive, thereby simplifying product assembly 10 and reducing assembly costs compared to a single stack fixing method using welding, riveting, bolting, etc. between conventional parts. The present invention is an adhesive-fixed electrolysis module comprising a single stack, the single stack having a separator, a pair of bipolar plates, a pair of gaskets, a pair of 5 diffusion layers, a pair of electrodes, and a cell frame, wherein the bipolar plates, the gaskets, the diffusion layers, and the electrodes are sequentially arranged on the cathode and anode sides, respectively, with respect to the separator, forming a symmetrical structure, wherein the separator, the bipolar plates, the gaskets, the diffusion layers, and the electrodes are stacked in a zero-gap manner within the cell frame, and wher
Resumen de: AU2024276790A1
The specification describes a process for preparing an oxygen evolution reaction catalyst, comprising the steps of: (i) combining iridium powder and a peroxide salt to produce a powder mixture; (ii) carrying out thermal treatment on the powder mixture; (iii) dissolving the product from (ii) in water to produce a solution; (iv) reducing the pH of the solution from (iii) to affect a precipitation and form a solid and a supernatant; (v) separating the solid from the supernatant; and (vi) drying the solid. An oxygen evolution catalyst obtainable by the process is also described.
Resumen de: AU2024249829A1
The invention relates to an electrolytic method for producing carbon dioxide, having the following steps: a. anodically oxidizing hydrogen gas within an electrolysis cell, an acidic oxidation product being obtained; b. reacting the acidic oxidation product with an aqueous electrolyte solution within the electrolysis cell, an acidic aqueous solution being obtained; c. cathodically reducing water within the electrolysis cell, an alkaline aqueous solution and hydrogen gas being obtained; d. reacting the alkaline aqueous solution outside of the electrolysis cell with a gas which contains carbon dioxide, wherein the gas is air in particular, in order to obtain a carbonate-containing aqueous solution; and e. reacting the carbonate-containing alkaline aqueous solution with the acidic aqueous solution outside of the electrolysis cell in order to obtain dissolved carbon dioxide gas.
Resumen de: WO2025233484A1
An apparatus (1) for generating hydrogen, the apparatus (1) comprising a housing (10) containing a first electrode (11) and a second electrode (12), each of the first electrode (11) and second electrode (12) being for submersion within water located within the housing (10), the first electrode (11) surrounding the second electrode (12), wherein the first electrode (11) is of cylindrical form and the second electrode (12) is of at least part-conical or frusto-conical form.
Resumen de: US2025347008A1
An electrolysis plant includes at least one electrolysis module. The electrolysis module has a plurality of series-connected electrolysis cells. A DC-capable switching device is connected electrically in parallel and has an activatable power resistor such that, in the closed state, a current path through the power resistor can be activated so as to bypass electrolysis cells and to be able to drain excess power through the power resistor. There is also described a method for operating such an electrolysis plant for separating water into hydrogen and oxygen, and to a combination with an electrolysis plant that is connected directly to a wind turbine.
Resumen de: US2025347013A1
A photoelectrode includes a fluorine-doped tin oxide (FTO) substrate, and a layer of graphitic-poly(2,4,6-triaminopyrimidine) (g-PTAP) nanoflakes at least partially covering a surface of the FTO substrate. Further, the g-PTAP nanoflakes have a width of 0.1 to 5 micrometers (μm). In addition, a method for producing the photoelectrode, and a method for photocatalytic water splitting, in which the photoelectrode is used.
Resumen de: US2025347011A1
An electrode includes a bimetallic ruthenium-cobalt (RuCo) alloy electrocatalyst having a metallic substrate and a layer of a RuCo alloy at least partially covering the surface of the metallic substrate. The layer of the RuCo alloy includes spherical-shaped particles having an average particle size of 0.5 to 5 micrometers (μm). The electrode can be used for electrochemical water splitting applications to generate hydrogen and water.
Resumen de: US2025347014A1
A photoelectrode includes a fluorine-doped tin oxide (FTO) substrate, and a layer of graphitic-poly(2,4,6-triaminopyrimidine) (g-PTAP) nanoflakes at least partially covering a surface of the FTO substrate. Further, the g-PTAP nanoflakes have a width of 0.1 to 5 micrometers (μm). In addition, a method for producing the photoelectrode, and a method for photocatalytic water splitting, in which the photoelectrode is used.
Resumen de: US2025347010A1
A method of making NiO nanoparticles is described, as well as a method of using NiO nanoparticles as an electrocatalyst component to a porous carbon electrode. The carbon electrode may be made of carbonized filter paper. Together, this carbon-supported NiO electrode may be used for water electrolysis. Using a pamoic acid salt in the NiO nanoparticle synthesis leads to smaller and monodisperse nanoparticles, which support higher current densities.
Resumen de: WO2025235885A1
The present application relates to components for use in an electrolysis cell and/or stack comprising features, geometry, and materials to overcome prior art limitations related to cell electrical isolation, fluid sealing, and high speed manufacturing. The electrolysis cell comprises a membrane, an anode, a cathode, an anode flow field, a cathode flow field, and a bipolar plate assembly comprising an embedded hydrogen seal and both conductive and non-conductive areas. The components are cut using two-dimensional patterns from substantially flat raw materials capable of being sourced in roll form. These substantially two-dimensional components are processed to create a fully unitized, three- dimensional electrolysis cell with a hermetically sealed cathode chamber.
Nº publicación: WO2025232928A1 13/11/2025
Solicitante:
HUANENG CHONGQING LUOHUANG POWER GENERATION CO LTD [CN]
XIAN THERMAL POWER RES INSTITUTE CO LTD [CN]
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Resumen de: WO2025232928A1
Disclosed in the present invention are a system and method for using boiler hot flue gas to decompose hydrogen iodide. The system comprises a mixed liquid container, a mixed liquid pump, a pump outlet regulating valve, a boiler high-temperature flue gas zone and a temperature control valve, wherein an outlet of the mixed liquid container is connected to an inlet of the mixed liquid pump; an outlet of the mixed liquid pump is connected to an inlet of the pump outlet regulating valve; an outlet of the pump outlet regulating valve is connected to an inlet of the boiler high-temperature flue gas zone; and an outlet of the boiler high-temperature flue gas zone is connected to an inlet of the temperature control valve. In the present invention, heat is obtained from flue gas from a power station boiler; it is only necessary to place a hydrogen iodide heating device in a high-temperature zone of a furnace of the boiler, and two sides of the hydrogen iodide heating device are at low pressure, thereby greatly improving the safety; in addition, obtaining heat directly from the flue gas is more economical than obtaining heat via steam and electric energy.
BOPI
Sede Electrónica
