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437
resultados
Última actualización
18/01/2026 [06:56:00]
Resultados 425 a 437 de 437
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: 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: EP4650487A1
The process comprises:- recovering a mixture of electrolyte and dioxygen from an anodic compartment (19B) and separating it in a dioxygen separator (60) to obtain a dioxygen stream and a dioxygen containing electrolyte stream;- recovering a mixture of electrolyte and dihydrogen from an cathodic compartment (19A) and separating it in a dihydrogen separator (49) to obtain a dihydrogen stream and a dihydrogen containing electrolyte stream ;- recirculating the dioxygen containing electrolyte stream and the dihydrogen containing electrolyte stream.Upon detection of conditions susceptible of leading to a dioxygen to dihydrogen ratio greater than a safety OTH threshold in the cathodic compartment (19A) or/and to a dihydrogen to dioxygen ratio greater than a safety HTO threshold in the anodic compartment (19B), flushing dihydrogen in electrolyte fed to the or each cathodic compartment (19A), and/or flushing dioxygen in electrolyte fed to the or each anodic compartment (19B).
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: EP4650486A1
The present invention relates to a membrane electrode assembly (100) for a stackable electrolyser cell. The membrane electrode assembly (100) comprises a catalyst coated membrane (CCM) member (110) with a polymer membrane (111) that is at least partially coated with a catalyst coating (112, 113), a frame member (140) for mechanical reinforcement, two porous transport layers (121, 122), and an adhesive layer (150). The adhesive layer (150) forms an adhesive bond between the CCM member (110) and at least the frame member (140) and further, comprises an adhesive overlap section (151) that overlaps with a frame overlap section (141) of the frame member (140). The adhesive overlap section (151) extends inwardly with respect to the peripheral area (115) beyond the frame overlap section (141) to delimit a process area (116) of the CCM member (110). The invention relates further to a solid polymer electrolyte electrolyser cell stack with such membrane electrode assembly (100) and a method of manufacturing said membrane electrode assembly (100).
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: KR20220009803A
The present invention relates to an energy production complex system based on a liquid compound, including: a water electrolysis device unit for electrolyzing water to produce hydrogen; a hydrogen storage device unit for reacting the hydrogen produced by the water electrolysis unit with a first liquid compound to allow the first liquid compound to become a second liquid compound in which hydrogen is stored; a hydrogen desorption device unit for desorbing the hydrogen stored in the second liquid compound into hydrogen and the first liquid compound; and a fuel cell unit for generating power by receiving the hydrogen desorbed from the hydrogen desorption device unit.
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: 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: 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: EP4650490A1
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.
Nº publicación: KR20250162764A 19/11/2025
Solicitante:
JOHNSON MATTHEY HYDROGEN TECHNOLOGIES LTD [GB]
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Resumen de: CN120476490A
The present invention provides a reinforced ion conducting membrane comprising: (a) a reinforcement layer comprising a porous polymer structure; and (b) a polymer ion conducting membrane material impregnated within the porous polymer structure; wherein the porous polymer structure comprises a polymer backbone based on a nitrogen-containing heterocyclic ring, and the polymer ion-conducting membrane material has a transition temperature T alpha in the range of from 60 DEG C to 80 DEG C and including end values.
BOPI
Sede Electrónica
