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Verfahren zum Minimieren einer Degradation von Zellen in einem Zellstapel eines Elektrolysesystems

Resumen de: DE102025113540A1

Die vorgestellte Erfindung betrifft ein Verfahren (100) zum Minimieren einer Degradation von Zellen in einem Zellstapel (201) eines Elektrolysesystems (200), wobei das Verfahren (100) umfasst:- Betreiben (101) des Elektrolysesystems (200) in einem Elektrolysebetrieb, bei dem Wasser in den Zellen durch Zufuhr von elektrischem Strom in Wasserstoff und Sauerstoff gespalten wird,- Beenden (103) des Elektrolysebetriebs und- Verdrängen (105) zumindest eines Teils eines in dem Zellstapel (201) befindlichen Elektrolyten durch ein Austauschfluid aus dem Zellstapel (201), nachdem der Elektrolysebetrieb beendet wurde.

SCALABLE AUTOMATED OXYHYDROGEN-PRODUCTION, STORAGE, AND UTILIZATION SYSTEM

Resumen de: US20260308773A1

The system produces, stores, and utilizes Oxyhydrogen gas in scalable quantities for direct or indirect use in multiple applications where process automation and safety features provide continuous duty with a maximum level of safety and a minimum of maintenance. In an embodiment, the system generates Oxyhydrogen Gas using a generator/electrolyzer, a reservoir, a control module, a compression process, flash back arrestor with thermal indication, storage, safety release module, and a utilization burner module and/or a combustion module. In and embodiment There are an additional sub-systems and their components that support production including distilled water, caustic solution, heat exchange, vacuum pump, and De-Foamer.

Photokatalysevorrichtung, Photokatalyseverfahren, Wärmeenergieerzeugungsvorrichtung und Wärmeenergieerzeugungsverfahren

Resumen de: DE102025113773A1

Die vorliegende Erfindung betrifft eine Photokatalysevorrichtung mit wenigstens einem Photokatalysereaktor. Die Erfindung betrifft darüber hinaus ein Photokatalyseverfahren, bei dem Wasserdampf und/oder Wasser wenigstens einem Photokatalysereaktor zugeführt wird/werden, in dem der Wasserdampf und/oder das Wasser photokatalytisch in Wasserstoff und Sauerstoff aufgespalten wird/werden. Erfindungsgemäß weist der wenigstens eine Photokatalysereaktor jeweils einen Innenraum mit wenigstens einem Wasserdampf- und/oder Wassereinlass und wenigstens teilweise eine dem Innenraum des jeweiligen Photokatalysereaktors zugewandte Innenbeschichtung auf und ist bis auf seine Medienein- und auslässe nach außen dicht, wobei an oder um eine(r) Außenseite des Photokatalysereaktors wenigstens eine Erwärmungseinrichtung oder eine Abwärmezufuhr angeordnet ist, wobei die Innenbeschichtung ein keramisches, einen Katalysator für eine Photokatalyse ausbildendes Funktionsmaterial aufweist und in dem Innenraum des jeweiligen Photokatalysereaktors ein Wasserstoffkanal ausgebildet ist, dessen Kanalwandung zumindest teilweise als eine für Wasserstoff durchlässige, aber für Sauerstoff, Stickstoff und Wasser undurchlässige Membran ausgebildet ist.

ASSEMBLY COMPRISING A BIPOLAR PLATE OF AN ELECTROLYTIC CELL AND A SEALING GASKET

Resumen de: WO2026209443A1

The present invention relates to an assembly comprising a bipolar plate (100) for an electrolytic cell (10, 10', 10'',...) of an electrolyser stack (1), which has a right cylindrical overall shape with a longitudinal axis X, the bases of the cylinder each having a recess (44, 45), having a right 5 cylindrical shape of height h and the same axis X, a periphery (43) circumscribing the recesses (44, 45), the periphery (43) being provided with channels (40, 41) which pass through the periphery (43) from a first opening (46) arranged on one face of the periphery (43) to a second opening (47) arranged on the opposite face of the periphery (43), the channels (40, 41) being configured to allow the recess (44, 45) to be supplied with an electrolytic fluid, or a mixture of 0 electrolytic fluid and electrolysis gases to be discharged from the recess (44, 45), at least one of the openings (46, 47) being circumscribed by a groove (42), and a sealing gasket (48). According to the invention, the sealing gasket (48) rests in the groove (42).

Pressure control system for electrolysis arrangement

Resumen de: FI20253122A1

The present invention relates to a pressure control system (2) for an electrolysis arrangement comprising at least one sensor (22) configured to determine a pressure difference (Δp) between two fluid pathways comprising respective resultant fluids produced by an electrolysis stack (4) in use. At least one valve (20) configured to allow fluid flow therethrough to control pressure in the at least one of the fluid pathways. A controller (24) is configured to determine if said pressure difference (Δp) exceeds a threshold pressure difference (p*) and to control the valves (20) to reduce said pressure difference by continuously and/or in real-time adjusting the valve (20).

REACTOR FOR AMMONIA DECOMPOSITION REACTION AND AMMONIA DECOMPOSITION METHOD USING SAME

Resumen de: WO2026212273A1

The present invention relates to a reactor for an ammonia decomposition reaction and an ammonia decomposition method using same, wherein, during an ammonia decomposition reaction in which ammonia is decomposed into hydrogen and nitrogen by using a catalyst, molten salt is accommodated between the inner surface of a shell and the outermost surface of a multi-tube structure including a reaction tube and a preheating tube, and an inlet through which ammonia is introduced is connected to one end of the preheating tube so as to communicate with each other, so that heat transfer is achieved, thereby eliminating a temperature gradient, and the temperature of the reactor can be uniformed without cold spots by setting the specific heat and the mass flow rate of the ammonia and the molten salt in the reactor.

Verfahren zur Herstellung einer Elektrolysezelle, Elektrolysezelle

Resumen de: DE102025113113A1

Vorgeschlagen wird ein Verfahren zur Herstellung einer Elektrolysezelle (1), umfassend zwei Elektroden (2, 3) mit einem dazwischen angeordneten Separator (4). Dabei wird zur Ausbildung zumindest einer Elektrode (2, 3) ein Elektrodenmaterial (5) auf eine poröse Transport- (6) und/oder Gasdiffusionslage (7) aufgebracht. Erfindungsgemäß wird vor dem Aufbringen des Elektrodenmaterials (5) eine perforierte Metallfolie (8) auf die poröse Transport-(6) und/oder Gasdiffusionslage (7) aufgebracht. Beim anschließenden Aufbringen des Elektrodenmaterials (5) auf die Oberfläche (8) der perforierten Metallfolie (8) werden Bereiche der porösen Transport- (6) und/oder Gasdiffusionslage (7), die durch die perforierte Metallfolie (8) freigelassenen werden, gezielt ausgespart.Darüber hinaus betrifft die Erfindung eine Elektrolysezelle (1).

Elektrolysesystem, Verfahren zum Betreiben eines Elektrolysesystems

Resumen de: DE102025113548A1

Die Erfindung betrifft ein Elektrolysesystem (1), umfassend mindestens einen Elektrolysestack (2) mit einer Anode (3) und einer Kathode, wobei der Anode (3) über einen Anodenkreislauf (4) ein Elektrolyt, insbesondere Wasser, zuführbar ist und wobei in den Anodenkreislauf (4) mindestens ein Gas-Flüssigkeitsseparator (5) zur Aufbereitung des Elektrolyten integriert ist. Erfindungsgemäß sind in den Anodenkreislauf (4) mindestens zwei Gas-Flüssigkeitsseparatoren (5, 6) integriert, die hydraulisch parallelgeschaltet sind, wobei mindestens einer der Gas-Flüssigkeitsseparatoren (5, 6) über ein einlassseitiges erstes Ventil (7) und ein auslassseitiges zweites Ventil (8) vom Anodenkreislauf (4) trennbar ist.Die Erfindung betrifft ferner ein Verfahren zum Betreiben eines Elektrolysesystems (1).

DIHYDROGEN PRODUCTION USING GEOTHERMAL ENERGY

Resumen de: WO2026209361A1

System (1) comprising a dihydrogen production installation (3), a geothermal installation (2) and an installation (4) configured to transfer heat from a geothermal fluid (9) supplied by the geothermal installation (2) to an inlet stream (8) feeding the dihydrogen production installation (3). Method for implementing this system (1).

A ZERO-EMISSION AND HIGH-EFFICIENCY, ON-DEMAND GENERATED OXYHYDROGEN BOILER

Resumen de: WO2026210551A1

A zero-emission and high-efficiency boiler using oxyhydrogen generated on demand through electrolysis of water, comprising a final boiler heat exchanger (33) traversed by boiler water comprising means for connection to hydraulic circuits of external user systems (35; 37), and an oxyhydrogen generator (1) comprising an electrolytic cell (3) comprising a plurality of electrically conductive plates arranged side by side in a row, mutually spaced, and a positive pole and a negative pole connected to two of the plates; at least one of these plates is affected by a groove that cuts one of its faces with or without passing through its entire thickness; and comprising burner-heat exchanger assemblies (27, 27') in connection with the oxyhydrogen generator (1) and the final boiler heat exchanger (33) and comprising direct-flame burners and heat exchangers comprising internal passages for the boiler water, arranged above the burners (FIG.1).

ELECTRODE MATERIAL FOR WATER ELECTROLYSIS

Resumen de: WO2026211328A1

The purpose of the present invention is to provide an electrode material for water electrolysis, with which a higher current density than that with conventional electrode materials for water electrolysis is rendered possible. This electrode material for water electrolysis comprises at least one compound (A) selected from the group consisting of iron-containing oxides and iron-containing hydroxides and at least one metal-containing component (B) selected from the group consisting of nickel, cobalt, and oxides of these, wherein the standard deviation of the weight ratio between the iron element of the compound (A) and the metallic element of the metal-containing component (B), as determined by the following calculation method, is 3 or less. The electrode material is examined with a scanning electron microscope (SEM) at a magnification of 10,000 times, and any 10 fields of view are subjected to element mapping and surface analysis with an EDS detector. The weight ratio of the metallic element of the metal-containing component (B) to the iron element of the compound (A) is determined with respect to each field of view, and the standard deviation for the 10 fields of view is determined.

アンモニア原料流から水素生成物及び窒素生成物を生成するためのプロセス

Resumen de: EP4527790A1

The invention relates to a process (100) for producing a hydrogen product and a nitrogen product from an ammonia feed stream, comprising the following steps:• In a reactor, performing an endothermic cracking reaction of the ammonia feed stream (101) into a cracked gas comprising hydrogen and nitrogen,• In a main separation unit, performing a main separation (102) of said cracked gas stream, thus producing:- the hydrogen product,- a main separation unit tail gas comprising nitrogen and a residual portion of hydrogen,• In a secondary separation unit, performing a secondary separation (104) of the main separation unit tail gas into a secondary separation unit tail gas as the nitrogen product and a nitrogen depleted fuel stream• Routing (115) said fuel stream to a furnace to provide heat to the endothermic cracking reaction.

Porous Membrane for Alkaline Water Electrolysis Comprising a Surface-Modified Layer and Method for Producing the Same

Resumen de: KR20260146257A

0001a 본 발명은 PVA 코팅층을 포함하는 과불소계 이오노머를 포함하는 다공성 분리막 및 제조 방법에 관한 것으로서, 구체적으로, (a) 폴리아릴렌술폰계 고분자 및 퍼플루오로술폰산계(PFSA) 고분자를 포함하는 고분자 바인더 및 세라믹 나노입자를 포함하는 다공성 구조층, (b) 상기 다공성 구조층이 코팅되는 폴리페닐렌설파이드(PPS) 다공성 지지체, 및 (c) 다공성 분리막의 표면에 형성된 폴리비닐알코올(PVA) 코팅층을 포함하는, 알칼라인 수전해용 다공성 분리막, 및 비용매 유도 상분리(NIPS) 공정을 이용한 이의 제조방법에 관한 것이다. 본 발명에 따르면, 본 발명의 알칼라인 수전해용 다공성 분리막은 폴리술폰계 고분자의 일부를 퍼플루오로술폰산(PFSA) 고분자로 대체함으로써, 세라믹 나노입자와 술폰산 고분자와의 상호 작용(수소결합) 등을 바탕으로 나노입자를 결착시켜 지르코니아 소실을 막고 과대 기공의 발생을 억제하고 균일한 기공 형성을 유도할 수 있다. 또한, 본 발명의 알칼라인 수전해용 다공성 분리막은 PFSA 고분자의 첨가를 통해, 점도를 감소시키고 친수성을 향상시킬 수 있고 이에 따라 표면 기공을 형성하게 하고, 다공층 내부 기공형성까지 영향을 미칠 수 있고, 다공층내 PSf(물흡수율 0.6%이하) 대비 PFSA(Nafio

An Eco system MAR

Resumen de: GB2705217A

A process for climate-positive operation of a power generation system. A hydrogen H and natural gas HG fuel and compressed oxygen O are provided to a combustion chamber 303 to generate and provide a high temperature and high-pressure gas flow to drive a shaft 275 by expansion of the exhaust gas. A flow of expanded exhaust gas is provided to a heat recovery steam generator 201 to generate steam to drive a steam turbine 270. A flow of steam is provided from the heat recovery steam generator to a first electrolyzer 230 to produce hydrogen and oxygen gases. A flow of exhaust gas is provided from the heat recovery steam generator to a membrane separation system 281 for separation of residual gases, such as sulphur-dioxide, nitrogen-oxides and particulates, and a flow of carbon-dioxide gas and water vapor is provided from the membrane separation system to a second electrolyzer 701 to produce hydrogen gas, oxygen gas and magnesium carbonate. A flow is provided from the second electrolyzer to a gas monitoring system 298. Figure 10

A PROCESS OF NOX-FREE COMBUSTION OF NH3 FOR POWER PRODUCTION

Resumen de: WO2025114049A1

The present invention relates to a gaseous fuel composition comprising O2, N2, H2O, NH3, H2 and optionally further atmospheric components the molar content of H2 is denoted a, the molar content of NH3 is denoted b, the molar content of O2 is denoted c, the molar content of N2 is denoted d, and the molar content of H2O is denoted e, and (a + 1.5b – 2c) / (a + 2b + c + d + e) is in the range of 0 to 0.01, and a constitutes at least 3 mol% of the gaseous fuel composition. The gaseous fuel composition can be produced in a process of the invention and combusted in another process of the invention. The invention further includes a process set-up and a process of combustion of NH3. In the invention, NH3 is 15 combusted to form a flue gas stream virtually free of NOx.

PROCESS FOR MANUFACTURING SUPPORTED IRIDIUM OXYGEN EVOLUTION REACTION CATALYST, A PRODUCT THEREOF AND ITS USE

Resumen de: WO2025114700A1

A process for preparing an oxygen evolution reaction (OER) catalyst comprises an oxygenated iridium component supported on a particulate solid support, which process comprising the steps of: (i) forming an aqueous mixture comprising a particulate solid support and a solution of a halide-free metal iridate; (ii) reducing the pH of the aqueous mixture to ≤ 5.0 to precipitate an oxygenated iridium component onto the particulate solid support; and (iii) isolating the product of step (ii).

WATER-ELECTROLYSER ANODE, PEM WATER ELECTROLYSER, METHOD OF MANUFACTURE AND METHOD OF WATER ELECTROLYSIS

Resumen de: WO2025114716A1

A water-electrolyser anode for a proton exchange membrane (PEM) water electrolyser comprises: a transition metal oxychalcogenide catalyst having the formula ABxOy, wherein A is a transition metal and B is a chalcogenide, and wherein 0 < x < 2 and 0 < y < 2. Also provided are a proton exchange membrane (PEM) water electrolyser, a method of water electrolysis, use of a transition metal oxychalcogenide as a catalyst in an oxygen evolution reaction under acidic conditions, and a method of manufacturing an anode for an electrolyser.

PROCESS FOR THE PRODUCTION OF HYDROGEN FROM AMMONIA

Resumen de: EP4563523A1

The invention relates to a process (100) for the production of hydrogen from ammonia comprising the following steps:- providing a water feed stream to a water electrolyzer (101);- performing a water electrolysis (102) of the water feed stream in the electrolyzer, producing an oxygen product stream and an electrolysis hydrogen stream;- providing an ammonia feed stream to an ammonia cracking reactor (103);- providing an oxidant stream (105) and performing a combustion reaction (106) with said oxidant stream, thereby generating heat;- in the ammonia cracking reactor, performing an endothermic reaction of ammonia cracking (104) of the ammonia feed stream with said generated heat;characterized in that the oxidant stream comprises at least a portion of the oxygen product stream produced by the water electrolysis of the water feed stream.

PROCESS AND PLANT FOR PRODUCING A SYNTHESIS PRODUCT

Resumen de: WO2025114080A1

The invention relates to a process (100) for producing a synthesis product (6), in which gaseous hydrogen (3) is provided by electrolysis (10) of water (1) and is subjected to a reaction (30) with one or more gaseous reactants (4) to form the synthesis product (6), wherein during a first process mode, the hydrogen (3) and the one or more reactants (4) are mixed to obtain a gaseous reaction mixture (5) and the gaseous reaction mixture (5), or a part thereof, is stored under pressure in a storage unit (20), and wherein during a second process mode the gaseous reaction mixture (5), or a part thereof, stored under pressure in the first process mode is taken from the storage unit (20) and fed to the reaction (30) to form the synthesis product (6). The invention also relates to a corresponding plant.

ELECTROLYZER, USE, OPERATION AND A METHOD OF PRODUCTION THEREOF

Resumen de: WO2025113761A1

An electrolyzer stack (17) wherein each of the electrode compartments (5, 6) is delimited by the ion-transporting separator (15) and a bipolar plate (14) as well as a gasket (25) that is surrounding the electrode compartments (5, 6). An electrolyte manifold (27) extends along the stack (17) and through an opening (20) in each of the bipolar plates (14). The electrolyte manifold (27) is formed by multiple serially connected flow restrictors (28), of which one flow restrictor (28) is provided per cell (1) and inserted between neighbouring gaskets (25) and comprises a flow canal (30) having a canal inlet (30 A) and a canal outlet (30B), wherein the canal inlet (30 A) is provided in the throughput opening and fluid-flow connected to the electrolyte manifold (27) and the canal outlet (30B) is fluid-flow connected to one of the cells (1) for supply of electrolyte from the electrolyte manifold (27) to the respective cell (1). The canal is narrow and long for reducing shunt currents and for providing a pressure drop larger, for example at least 10 times higher, than a pressure drop along the electrolyte manifold (27).

HYDROGEN GENERATION APPARATUS

Resumen de: EP4818112A1

0001 A hydrogen generation apparatus includes a hydrogen generator, a primary coil circuit, a hydrogen compressor, and a hydrogen storage cylinder. The hydrogen generator includes a hydrogen generator body, a secondary coil, and an eddy current generating unit. The hydrogen generator body has a chamber, and is configured with a first inlet for introducing a first substance, a second inlet for introducing a second substance, an outlet and an exhaust port. The secondary coil is wound around the hydrogen generator body. The eddy current generating unit is disposed in the chamber corresponding to the secondary coil. The primary coil circuit is coupled to the secondary coil to induce the secondary coil to generate a high-voltage alternating current, thereby causing the eddy current generating unit to generate an eddy current and produce high temperature. A thermal cracking reaction is induced by the high temperature to generate hydrogen gas.

System for controlling water electrolysis operation linked to Renewable Energy generation power

Resumen de: WO2026127464A1

The present invention relates to a water electrolysis operation control system linked to power produced from solar energy, and, to a water electrolysis operation control system linked to solar-generated power for maximizing hydrogen production relative to renewable energy generation. The present invention comprises: a water electrolysis system (100) that is supplied with power from a solar power system and produces hydrogen; and a control unit (200) that controls an output of the water electrolysis system, wherein the control unit adjusts the output of the water electrolysis system according to the variability of the amount of solar power generation, by controlling the output of the water electrolysis system, controlling regular time intervals, controlling regular output intervals, and combining the control of the regular time intervals and the control of the regular output intervals, thus having the effect of reducing ESS capacity and increasing hydrogen production efficiency by means of a water electrolysis operation method that actively responds to the variability of renewable energy.

Electrolyser and method for operation thereof

Resumen de: GB2705198A

An electrolyser and a method for operating the electrolyser for producing hydrogen is described, The electrolyser and associated method mitigate performance degradation commonly resulting during shutdown periods. The electrolyser comprises a stack of electrolysis cells, a primary power supply and a secondary power supply. During periods Of operation the electrolyser is adapted to produce hydrogen when an electrical voltage from the primary power supply is applied to the stack, and during periods of non-operation, the secondary power supply is configured to apply an electrical voltage to the stack sufficient to inhibit degradation of the stack. The secondary power supply may be a battery or a capacitor configured to supply a voltage from 0.8-1.8V Figure 3

ELECTROCHEMICAL CELL COMPRISING A COMPOSITE PROTON EXCHANGE MEMBRANES WITH INTERLAYER STRUCTURE

Resumen de: EP4818367A1

The development of more cost-effective and efficient proton exchange membrane (PEM) water electrolysis cells requires the use of thinner membranes with extended lifetimes and reduced gas crossover. The inventive approach to address these challenges involves the incorporation of radical scavengers to mitigate radical-induced ionomer degradation, along with gas recombination catalysts to promote the conversion of crossover hydrogen and oxygen to water inside the PEM. Each of the two catalyst types has its distinct chemical reaction characteristics, to which the design of the composite membrane is tailored through rational considerations. In various embodiments of the present invention, the positioning effects of Ce_0.5Zr_0.5O₂ and Pt interlayers in composite membranes for their respective roles in radical scavenging and gas recombination were investigated. Results reveal that placing a radical scavenger interlayer near the cathode notably reduces the ionomer degradation rate, compared to its placement near the anode, evidenced by a 61% ± 7% reduction in fluoride release rate. This is likely due to reactive oxygen species in the cell being predominantly generated at the cathode, which is closer to the radical scavenger interlayer in the former case. The Ce content in cerium-zirconium oxide was further optimized using an ex-situ Fenton test, with Ce_0.25Zr_0.75O₂ demonstrating the highest radical scavenging activity.

A GREEN HYDROGEN PRODUCTION ARTIFICIAL INTELLIGENCE (AI) ASSISTANT

Nº publicación: EP4818960A1 07/10/2026

Solicitante:

SCHNEIDER ELECTRIC SYSTEMS USA INC [US]
Schneider Electric Systems USA, Inc.

Resumen de: EP4818960A1

0001 A green hydrogen production system uses an AI operator assistant. Electrolysis sensors collect operating conditions of an automated electrolysis system (102). An artificial intelligence (AI) electrolysis prediction engine (112) uses the operating conditions to model electrolysis. The AI electrolysis prediction engine (112) models electrolysis using a both first principles model (304) and machine learning models of one or more degradation factors, such as electrolyzer degradation or electro-osmatic drag. The AI electrolysis prediction engine (112) hybridizes the models to generate initial set point scenarios for the electrolysis process. An AI operator assistant receives process characteristics from the operator, which are used to select a set point scenario. An automation control processor (106) then controls electrolysis in accordance with the selected settings. An AI observer engine (114), an AI reasoning engine (116), and an AI error minimization engine (118) perform different aspects of a process to observe the process, determine deviations, and predict further optimization.