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739
resultados
Última actualización
28/11/2025 [07:03:00]
Resumen de: AU2024291248A1
The present invention refers to an electrolyzer (1) for the production of hydrogen from an alkaline electrolyte. The electrolyzer (1) comprises a first header (11) and a second header (12) between which a plurality of elementary cells (20) and a plurality of bipolar plates (5, 5', 5'') are stacked. Each bipolar plate (5) separates two adjacent elementary cells. According to the invention, each of said bipolar plates (5, 5',5'') comprises two plate-form components (5A, 5B) coupled together and configured so as to define one or more inner cavities (66) for the circulation of a cooling fluid. Furthermore, each bipolar plate (5, 5', 5'') comprises an inlet section (SI) and an outlet section (SV) respectively for the inlet and outlet of said cooling fluid in said one or more inner cavities (66).
Resumen de: AU2024270923A1
A hydrogen generating device provided with a sound insulation cover and a hydrogen generating device provided with a novel power module. The hydrogen generating device comprises a water tank, an electrolytic cell, a humidifier, a refining device, and a sound insulation cover; the water tank is used for containing electrolyzed water; the electrolytic cell is arranged in the water tank and is used for electrolyzing water to generate hydrogen-containing gas; the humidifier is provided with a humidifying chamber for containing supplementary water; the refining device is arranged in the humidifier and is used for refining the hydrogen-containing gas; the sound insulation cover is arranged in the humidifier and is provided with a sound insulation cavity, a connecting tube connecting the water tank and the refining device, and a gas outlet hole; the hydrogen-containing gas passes through the connecting tube and the refining device and flows into the supplementary water in the sound insulation cavity, and then the hydrogen-containing gas flows into the humidifying chamber through the gas outlet hole. Thus, according to the present invention, sound generated when the hydrogen-containing gas flows in the device can be insulated by means of the sound insulation cover, so as to improve the experience effect, and heat dissipation can be effectively carried out on a circuit board, thereby improving the operation efficiency.
Resumen de: EP4653581A1
In a water electrolysis system, an AC-side connection end of a power converter is connected to an AC power grid, a series circuit constituted by at least one electrolysis stack and a circuit breaker connected to the at least one electrolysis stack is connected to a DC-side connection end of the power converter, a controller reduces the power flowing to the DC-side connection end before the electrolysis stack is isolated from the series circuit, while maintaining a speed at which the power converter reduces the power flowing to the DC-side connection end below a speed that allows a difference of an amplitude of a voltage of the AC power grid from a reference value to be less than a predetermined value, and when reaching a power level enabling disconnection of an internal DC circuit by the circuit breaker, disconnects the circuit breaker connected to the DC circuit and isolates the electrolysis stack from the series circuit.
Resumen de: EP4653583A1
Provided is a water electrolysis stack capable of improving durability. The water electrolysis stack includes a cell stack that is formed by stacking a plurality of water electrolysis cells, an inter-cell space is formed between each adjacent ones of the water electrolysis cells in the cell stack, and gas flows into the inter-cell spaces in water electrolysis.
Resumen de: EP4653577A1
A hydrogen generator with detachable filter comprises a water tank, an electrolysis module configured in the water tank, a filter channel device coupled to the water tank, a humidifying module, vertically configured above the water tank, an integrated channel device vertically configured above the humidifying module, and a condenser configured on the integrated channel device. The electrolysis module is configured to electrolyze water contained in the water tank to generate gas comprising hydrogen. The humidifying module includes a humidifying chamber and a gas channel isolated from the humidifying chamber. The filtering device is arranged in the gas channel to receive and filter the gas comprising hydrogen generated by the electrolysis module. The condenser is configured to condense the gas comprising hydrogen outputted by the filtering device. The integrated channel device includes a gas input channel for guiding the gas comprising hydrogen outputted from the condenser into the humidifying chamber.
Resumen de: EP4653091A1
The present invention relates to a catalyst for an ammonia decomposition reaction, a method for preparing same, and a method for producing hydrogen by using same. More specifically, the present invention relates to a method for preparing a catalyst for an ammonia decomposition reaction, which economically and efficiently supports highly active ruthenium on a lanthanum-cerium composite oxide support, thereby preparing a catalyst that exhibits a higher ammonia conversion rate than conventional catalysts for an ammonia decomposition reaction, to a catalyst for an ammonia decomposition reaction prepared by the same method, and a method for producing hydrogen by using the same.
Resumen de: CN120677016A
Provided herein are water-reactive aluminum compositions comprising aluminum or an alloy thereof and an activating metal alloy (e.g., a non-eutectic activating metal alloy comprising bismuth, tin, indium, and gallium; or an activating metal alloy comprising bismuth, tin and indium). Some water-reactive aluminum compositions provided herein are free of gallium. Also provided herein are methods of activating aluminum to provide a water-reactive aluminum composition. Also provided are fuel mixtures comprising the water-reactive aluminum composition described herein and a water-reactive aluminum composition having an increased gallium content; and methods of providing hydrogen and/or steam using the water-reactive aluminum compositions described herein.
Resumen de: EP4653579A1
A hydrogen production system is provided with: a solid oxide electrolysis cell (SOEC) for electrolyzing water vapor; a power supply device for applying a voltage equal to or higher than a thermoneutral voltage to the SOEC; and a water vapor generation device for generating at least part of the water vapor supplied to the SOEC by heating water using surplus heat of the SOEC.
Resumen de: WO2024153322A1
A hydrogen plant (1) comprising - an electrolysis unit (10) having a hydrogen outlet (11) and an oxygen outlet (12); and - at least one turboexpander unit (20) connected to the oxygen outlet (12); wherein the at least one turboexpander unit (20) is connected to power a unit of the hydrogen producing plant (1) through a mechanical drive (30) directly connected to an output shaft of the turboexpander (20).
Resumen de: EP4653578A1
A hydrogen production system according to the present invention comprises: a solid oxide electrolysis cell (SOEC) that electrolyzes water vapor; a water vapor supply line for supplying water vapor to a hydrogen electrode of the SOEC; a water vapor discharge line through which water vapor discharged from the hydrogen electrode circulates; a first bypass line that communicates the water vapor supply line with the water vapor discharge line; and a first regulation device for regulating the flow rate of water vapor circulating through the first bypass line.
Resumen de: WO2024155894A2
The present disclosure concerns an electrocatalytic system and methods of the use thereof for the generation of hydrogen at both electrodes. In aspects, the present disclosure concerns an anode of a copper-silver bimetallic alloy, Cu3Ag7, and a basic anolyte with an aldehyde therein. The aldehyde reacts with the hydroxyl groups from the catholyte to produce hydrogen and the catholyte reacts water therein with the electrons from the anolyte to also produce hydrogen in a highly Faradaic efficient system. Application of the present disclosure not only provides for production of clean hydrogen, but also offers an approach for aldehyde decontamination.
Resumen de: MX2025008404A
The invention provides devices, systems, and methods for providing hydrogen gas mixtures to a subject. The invention allows hydrogen gas mixtures to be provided at a rate that does not restrict normal or even elevated breathing.
Resumen de: PL448633A1
Przedmiotem zgłoszenia jest generator wodoru i tlenu dla zastosowań medycznych, wytwarzający gaz HHO na drodze reakcji utleniania-redukcji elektrolitu po doprowadzeniu do elektrod potencjału anody i katody. Generator ma dwie płaskie anody (13) i jedną katodę (14) oraz między nimi blachy neutralne (15), odseparowane od siebie dielektrycznymi przekładkami (3), połączone poprzez dwa współosiowe otwory w jeden zespół śrubami scalającymi elektrody (9) i na każdą śrubę (9) nasunięta jest rurka izolacyjna (16) separująca śrubę od katody (14) oraz przekładek (3) i śruby (9) łączą elektrycznie ze sobą obie anody (13) i generator umieszczony jest w szklanym pojemniku na elektrolit (1), zamkniętym szczelnie od dołu pokrywą dolną (5), a do górnej części pojemnika (1) przymocowana jest szczelnie pokrywa górna (4), gdzie w pokrywie górnej (4) umieszczone są szczelnie w dedykowanych otworach śrubowe przyłącza anody (6), katody (7) oraz przewód odprowadzający gaz HHO, przy czym katoda (14) oraz jedna z anod (13) posiadają sztywne wyprowadzenia elektrycznie połączone odpowiednio z przyłączem katody (7) oraz przyłączem anody (6) i śrubowe przyłącza anody (13) i katody (14), odpowiednio (6 i 7), stanowią mocowanie generatora do pokrywy górnej (4).
Resumen de: AU2023381476A1
A cell frame adapted for use in a pressurised electrolyser cell stack is provided. From an inner circumferential rim of the cell frame, a circumferential radial shelf with inwardly tapering thickness is provided, such that an annular space between a circumferential radial shelf and a neighbouring circumferential radial shelf is provided when cell frames are stacked in alignment with each other, and that outwardly of the circumferential radial shelf, a mobility link is provided which connects the radial shelf to the remaining cell frame.
Resumen de: WO2025240133A1
A method utilizing the multi-metal composition is disclosed. The multi-metal composition may comprise: an alloy comprising at least five elements selected from the group consisting of Co, Cr, Fe, Mn, Ni, Al, Mg, Cu, Zn, Zr, Ru, Rh, Pd, Ag, W, Re, Ir, Pt, Pd, Au, Ce, Yb, Sn, Ca, Be, Mo, V, W, and Sr. The method may comprise: providing a multi-metal composition comprising an alloy comprising at least five elements selected from the group consisting of Co, Cr, Fe, Mn, Ni, Al, Mg, Cu, Zn, Zr, Ru, Rh, Pd, Ag, W, Re, Ir, Pt, Pd, Au, Ce, Yb, Sn, Ca, Be, Mo, V, W, and Sr; and interacting a gas stream comprising hydrogen sulfide with the multi-metal composition.
Resumen de: WO2025238524A1
An electrochemical process and apparatus for producing hydrogen and a dehydrogenated product from partial oxidation of an alcohol. The hydrogen may be utilised in a hydrogen fuel cell to generated electricity, e.g., to power a vehicle.
Resumen de: WO2025239823A1
A hydrogen providing system (1) for providing hydrogen to an ironworks plant (4) in a heavy industry site (3). The hydrogen providing system (1) comprises an electrical power control unit (5) connected to a main electrical line (2) providing alternating current, AC, power, an electrolyser (6) configured to produce hydrogen gas, at least one hydrogen storage tank (7) configured to store hydrogen gas, and a fuel mixer (8) in fluid communication with and configured to direct the flow of hydrogen between the electrolyser (6), the hydrogen storage tank (7), and the ironworks plant (4). The hydrogen providing system (1) also comprises an electrical mixer (9) connected to and configured to control the flow of current between an AC current power line (10) connected to the electric power control unit (5), which is configured to control the AC power to the AC current power line (10),a first direct current, DC, power line (11) connected to the electrolyser, and a second DC power line (12) connected to a solar power plant (13).
Resumen de: WO2025237669A1
Disclosed is a method for preparing an electrochemically activated electrode for electrochemical reduction reactions, the electrode comprising at least one catalytic material based on at least one fluorinated group VIB metal, the method consisting in carrying out an oxidative electrochemical treatment on an electrode comprising at least one catalytic material based on at least one fluorinated group VIB metal.
Resumen de: WO2025237667A1
Disclosed is a method for preparing an electrochemically activated electrode for electrochemical reduction reactions, the electrode comprising at least one catalytic material based on at least one group VIB metal supported on an electrically conductive support, the method consisting in carrying out an electrochemical treatment on an electrode comprising at least one catalytic material based on at least one group VIB metal supported on an electrically conductive support. The electrochemical treatment, which is carried out by cyclic voltammetry (CV) or chronoamperometry (CA), consists of a step of oxidation under specific conditions.
Resumen de: WO2025238387A1
The subject of the invention relates to an electric energy conversion unit, especially for the use of electricity with time-varying power for the production of hydrogen gas, which has a current conducting piece (2) provided with an input gate (3) that may be connected to the electrical energy supply unit (4), at least one hydrogen gas production subunit (20) connected to the current conducting piece (2), and at least one hydrogen gas storage tank (30) connected to the hydrogen gas production subunit (20), where the hydrogen gas production subunit (20) has an electrolysing cell (21), and the gas output (21a) of the electrolysing cell (21) is connected to the input pipe (31)of the hydrogen gas storage tank (30), and the hydrogen gas storage tank (30) is provided with an unloading pipe (32). It is characteristic of the invention that an electric current regulation subunit (10) is fitted between the input gate (3) of the current conducting piece (2) and the hydrogen gas production subunit (20), where the electric current regulation subunit (10) has at least one transformer (11), a rectifier device (12) and a current intensity regulation device (13), and the current intensity regulation device (13) is interposed between the input gate (3) of the current conducting piece (2) and the input (11a) of the transformer (11), or between the output (11) of the transformer (11) and the input (12a) of the rectifier device (12), or between two transformers (11) in the case of several transfor
Resumen de: US2025354272A1
Provided is an electrochemical system comprising a water electrolysis stack with an anode and a cathode. The system includes a reaction fluid supply line that supplies a reaction fluid to the anode, a first gas-liquid separator located in the reaction fluid supply line to separate the reaction fluid into gaseous and liquid components, and a first filter part positioned upstream of the first gas-liquid separator to filter the reaction fluid. The system further includes a first circulation line that circulates the liquid reaction fluid from the anode back to the first gas-liquid separator. Additionally, a second gas-liquid separator in a discharged fluid discharge line is connected to the cathode, with a second circulation line configured to maintain the ionic purity of the discharged fluid. The system also includes a mechanism to monitor ionic conductivity and selectively control the operation of the water electrolysis stack based on detected ionic levels.
Resumen de: US2025354277A1
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.
Resumen de: US2025354282A1
A water electrolysis process includes recovering a mixture of electrolyte and dioxygen from an anodic compartment and separating it in a dioxygen separator to obtain a dioxygen stream and a dioxygen containing electrolyte stream; recovering a mixture of electrolyte and dihydrogen from an cathodic compartment and separating it in a dihydrogen separator 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 or/and to a dihydrogen to dioxygen ratio greater than a safety HTO threshold in the anodic compartment, flushing dihydrogen in electrolyte fed to the or each cathodic compartment, and/or flushing dioxygen in electrolyte fed to the or each anodic compartment.
Resumen de: US2025354279A1
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−2 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 contain any, or at m
Nº publicación: US2025354275A1 20/11/2025
Solicitante:
EXXONMOBIL TECH AND ENGINEERING COMPANY [US]
EXXONMOBIL TECHNOLOGY AND ENGINEERING COMPANY
Resumen de: US2025354275A1
Systems and methods are provided for integration of molten carbonate electrolysis cells in applications for hydrogen production and for operating turbines using oxycombustion. In some aspects, the unusual output flows from an MCEC (or more typically a plurality of MCECs) can be synergistically used in combination with reverse flow reactors and/or partial oxidation units to allow for hydrogen production while also performing carbon capture. In other embodiments, the anode output from an MCEC (or a plurality of MCECs) can be used as the oxygen-containing gas for a combustion turbine or a furnace.
BOPI
Sede Electrónica
