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772
resultados
Última actualización
30/09/2025 [06:57:00]
Resultados 50 a 75 de 772
Resumen de: WO2025190462A1
The present invention relates to an alkaline electrolysis unit for splitting water into hydrogen and oxygen, comprising a housing with at least one vertically arranged anode, at least one vertically arranged cathode and at least one vertically arranged membrane between the anode and the cathode, separating the anode and the cathode horizontally, allowing passage of OH- from the cathode to the anode and separating cavities with water around the anode and the cathode, where the membrane is allowing passage of water between the cavities below the lower edge of the membrane, while oxygen and hydrogen gasses can escape the upwards in the cavities and out of the electrolysis unit, where the housing comprises a side wall and a top part, where the lower part of the housing forms a water reservoir and where, at the bottom part of the side wall, a water inlet is provided and where the top part has outlets for hydrogen and oxygen.
Resumen de: US2025289716A1
Proposed is a carbon dioxide capture and carbon resource utilization system, for a fuel cell, using boil-off gas (BOG) generated from liquefied natural gas. The system includes a liquefied natural gas storage configured to store liquefied natural gas (LNG), a hydrocarbon reformer configured to react boil-off gas generated from liquefied natural gas storage with water input from outside, thereby generating a gas mixture containing hydrogen and carbon dioxide, a fuel cell configured to generate electric power by receiving hydrogen, a reactor configured to capture carbon dioxide by reacting carbon dioxide with a basic alkali mixture solution and to collect a reaction product containing the captured carbon dioxide and to separate a carbon dioxide reaction product and a waste solution from the reaction product, and a hydrogen generator configured to generate hydrogen and to supply the generated hydrogen to the fuel cell.
Resumen de: WO2025191003A1
A method for control of the individual catholyte and anolyte flows through a multitude of electrolyser stacks is provided wherein: a. each electrolyser stack (2) is adapted to perform electrolysis of water, and b. all electrolyser stacks (2) are served with an electric current and that, c. all electrolyser stacks (2) are served with anolyte flow (26), and d. all electrolyser stacks (2) are served with catholyte flow (27). It is preferred that e. differential pressure signals (28.1) at each electrolyser stack (2) is provided and, f. that catholyte control signals (43) and anolyte control signals (42) to each of a catholyte stack inflow valve actuator (44) and an anolyte stack inflow valve actuator (45) are provided for the regulation of each of an anolyte stack inflow valve (56) and a catholyte stack inflow valve (57). An electrolyser system is also provided.
Resumen de: WO2025190985A1
The invention relates to a simplified method and to a corresponding device that can be used to supply waste heat from ammonia synthesis plants, in which the hydrogen required to produce the ammonia is produced with the aid of water electrolysis, for further application with the aid of low-pressure steam. In the method and the corresponding device, low-pressure steam at a temperature of less than 200 °C and with a pressure of 5 to 15 bar is generated from the waste heat of the ammonia synthesis plant, said steam being usable for further applications. By using low-pressure steam, significant economical advantages can be achieved in comparison to the conventional use of medium-pressure steam when the method is carried out using discontinuous power sources. The invention further relates to devices which are designed to carry out such methods and to plants which have a part for generating ammonia and a part for utilizing waste heat from the aforementioned part, said second part being formed from the specified device.
Resumen de: WO2025190929A1
The present invention relates to a process for converting carbon dioxide into carbon monoxide using in situ generated carbon comprising the step of reacting a starting composition containing carbon dioxide and dibromomethane in a reactor at a temperature of 900 to 2,000°C so as to produce a carbon monoxide and hydrogen bromide containing gaseous reaction mixture.
Resumen de: WO2025190595A1
The invention relates to a method of operating a storage system (10) for a power-to-X application. The storage system (10) comprises a hydrogen storage means (2), wherein the hydrogen storage means (2) is coupled by a compressor (C1) to an electrolysis device (1) set up to produce hydrogen (H2) from renewable energy. The method comprises removing (S1) hydrogen (H2) from the hydrogen storage means (2) when hydrogen production by the electrolysis device (1) falls below a certain level, in particular owing to intermittent supply thereof with renewable energy, (S2) using the removed hydrogen (H2) as synthesis gas balance for a synthesis, and (S3) replenishing the hydrogen storage means (2) with produced hydrogen ((H2) via the compressor (C1) as soon as the hydrogen production exceeds the level.
Resumen de: WO2025190563A1
The invention relates to a process for obtaining hydrogen from water, in which an oxidation unit is supplied with a pumpable suspension of zinc particles in alkaline solution, zinc is oxidized electrochemically or thermally to zinc oxide in the oxidation unit (3) with release of hydrogen, the suspension leaving the oxidation unit (3) is fed to a reduction unit (4), and zinc oxides formed in the course of oxidation in the reduction unit (4) are electrochemically reduced to zinc with release of oxygen, and then the suspension leaving the reduction unit (4) is fed back to the at least one oxidation unit (3).
Resumen de: US2025293279A1
A membrane electrode assembly includes a cathode portion including a cathode electrode and an anode portion disposed opposite the cathode portion and including an anode electrode. Additionally, the membrane electrode assembly includes a polymer electrolyte membrane extending between the cathode portion and the anode portion. Moreover, the membrane electrode assembly includes one or more metal oxides disposed therein with the metal oxides configured to react with hydrogen peroxide within the membrane electrode assembly. Additionally, the membrane electrode assembly includes one or more metal cations disposed therein with the metal cations configured to react with hydroxyl radicals disposed within the membrane electrode assembly.
Resumen de: AU2024226531A1
This hydrogen carrier production system includes: a hydrogen production device which produces hydrogen; a hydrogen tank in which hydrogen produced by the hydrogen production device is stored; and a plurality of hydrogen carrier production devices in which hydrogen stored in the hydrogen tank is converted to different types of hydrogen carriers.
Resumen de: AU2024218032A1
A hydrogen generation system includes: a direct current (DC) power supply providing a driver signal, a reactive circuit coupled to the power supply and configured to generate a pulse drive signal from the driver signal, at least one reaction chamber coupled to the reactive circuit and receiving the pulse drive signal wherein the chamber is configured to generate hydrogen from feedstock material utilizing the pulse drive signal, a gas analyzer coupled to the at least one reaction chamber and configured to detect the generated hydrogen, and a control unit coupled to the reactive circuit and to the gas analyzer and configured to control the reactive circuit based on the detected hydrogen. The reaction chamber includes a plurality of positively charged elements and a plurality of negatively charged elements. The elements are composed of non-dis similar metallic material.
Resumen de: AU2024214359A1
Feedwater preparation system in a water electrolyser adapted to produce hydrogen and oxygen in one or more pressurised electrolyser stacks (2) using alkaline water and comprising a product gas conditioning system that has a safety valve out-blow material stream pipe (11) which is connected to a feedwater vessel (9), and/or has a depressurisation stream pipe (31) from a gas cleaning vessel which is connected to the feedwater vessel (9).
Resumen de: AU2024269568A1
The present invention relates to a novel material comprising an organic binder consisting of a thermoplastic polymer, selected from the group consisting of polyethylene, polypropylene, polystyrene, acrylonitrile-butadiene-styrene, poly vinyl halide or poly vinylidene halide or mixtures thereof, a hydrophilic inorganic filler and a porosity agent. This material can be used for the manufacture of a film which, after treatment, will provide a membrane suitable for use as a diaphragm in an alkaline electrolyser, allowing the production of hydrogen.
Resumen de: US2025283232A1
An electrolysis cell of an electrolysis device includes a membrane electrode assembly in which an electrolyte membrane is interposed between a first electrode and a second electrode. The membrane electrode assembly is positioned between a first separator and a second separator. The electrolysis device further includes a seal member and a protection member. The protection member surrounds the outer periphery of the second electrode. The protection member includes a first portion and a second portion. The first portion is interposed between the electrolyte membrane and the seal member. The second portion is interposed between the electrolyte membrane and the second separator.
Resumen de: WO2025192600A1
This cell unit (2) comprises: a base material (10) that defines a first surface (13) and a second surface (14) that face each other back to back; a hole (15) that penetrates the base material (10) from the first surface (13) to the second surface (14); a film (21) that is disposed in the hole (15) and partitions the hole (15) into a first space (17) on the first surface (13) side and a second space (18) on the second surface (14) side; and an annular outer peripheral member (32) disposed around the outer peripheral surface (11a) of the base material (10).
Resumen de: WO2025192959A1
Disclosed is a method for preparing a layered metal phosphide hybrid catalyst. The method for preparing a layered metal phosphide hybrid catalyst comprises: a first step for preparing a layered metal double-layer hydroxide nanosheet structure represented by chemical formula 1; and a second step for heat-treating the metal double-layer hydroxide nanosheet structure and a phosphorus (P)-containing precursor material in a reducing atmosphere to convert the layered metal double-layer hydroxide nanosheet structure into a layered metal phosphide hybrid nanosheet structure.
Resumen de: WO2025192602A1
A cell unit (2) comprises: a base material (10) that defines a first surface (11) and a second surface (12) facing each other; a hole (13) that penetrates from the first surface (11) to the second surface (12); a film (21) that is disposed in the hole (13) and partitions the hole (13) into a first space (15) on the first surface (11) side and a second space (16) on the second surface (12) side; a first flow path (40) that is formed on the base material (10) and serves for introducing a first fluid into the first space (15); a second flow path (42) that is formed on the base material (10) and serves for taking out a second fluid from the second space (16); a first gasket (50) disposed on the first surface (11) and surrounding the first space (15) and the first flow path (40); and a second gasket (51) disposed on the first surface (11) and surrounding the second flow path (42) on the outside of the first gasket (50).
Resumen de: WO2025191910A1
This water electrolysis system comprises a water electrolysis cell, a differential pressure detection unit, and a differential pressure adjustment unit. The water electrolysis cell is provided with a negative electrode, a positive electrode, and an ion exchange membrane disposed between the negative electrode and the positive electrode, and generates hydrogen and hydroxide ions from an electrolyte fed to a negative electrode chamber between the negative electrode and the ion exchange membrane, and generates oxygen from the electrolyte fed to a positive electrode chamber between the positive electrode and the ion exchange film and from the hydroxide ions that have passed through the ion exchange membrane. The differential pressure detection unit detects differential pressure between the negative electrode chamber and the positive electrode chamber. The differential pressure adjustment unit adjusts the differential pressure between the negative electrode chamber and the positive electrode chamber on the basis of the differential pressure detected by the differential pressure detection unit.
Resumen de: WO2025191865A1
An electrolytic cell (1) comprises a hydrogen electrode layer (6), an oxygen electrode layer (9), and an electrolyte layer (7) that is positioned between the hydrogen electrode layer (6) and the oxygen electrode layer (9). The hydrogen electrode layer (6) has a first layer (61), a second layer (62), and a third layer (63) that are arranged in order from the electrolyte layer (7) side. Each of the first layer (61), the second layer (62), and the third layer (63) is composed of Ni and an oxide ion-conductive ceramic material, and includes pores. The average particle size of the Ni in the second layer (62) is larger than the average particle size of the Ni in the first layer (61), and the average particle size of the Ni in the second layer (62) is smaller than the average particle size of the Ni in the third layer (63).
Resumen de: WO2025191855A1
An electrolytic cell (1) is provided with: a hydrogen electrode layer (6); an oxygen electrode layer (9); and an electrolyte layer (7) disposed between the hydrogen electrode layer (6) and the oxygen electrode layer (9). The hydrogen electrode layer (6) includes, in order from the electrolyte layer (7) side, a first layer (61), a second layer (62), and a third layer (63). Each of the first layer (61), the second layer (62), and the third layer (63) includes pores and is composed of nickel and a ceramic material having oxide-ion conductivity. The content of the ceramic material in the first layer (61) is greater than the content of the ceramic material in the second layer (62), and the content of the ceramic material in the second layer (62) is greater than the content of the ceramic material in the third layer (63).
Resumen de: WO2025191937A1
In the present invention, a third catalyst that promotes the bonding of hydrogen and oxygen is disposed on the anode side of an electrolyte membrane (51). Even when hydrogen generated on the cathode side passes through the electrolyte membrane (51) and enters the anode side, the action of the third catalyst enables said hydrogen to bond with oxygen generated on the anode side, thereby converting into water. This makes it possible to reduce the concentration of hydrogen in the gas discharged from the anode side. Particles of the third catalyst have a hollow structure with a cavity therein. Therefore, the amount of the third catalyst used can be reduced while maintaining the surface area of the particles. Additionally, because the particles of the third catalyst have an opening, the movement of water, hydrogen, and oxygen at the anode side is less likely to be inhibited. Accordingly, reductions in the reaction rate of electrolysis on the anode side can be suppressed.
Resumen de: WO2025190141A1
The present invention belongs to the technical field of water electrolysis for hydrogen production, and particularly relates to iron-nickel co-doped ammonium phosphomolybdate, a preparation method therefor, and the use thereof. The iron-nickel co-doped ammonium phosphomolybdate uses a molybdate, a phosphate, a ferric salt and a nickel salt as starting materials, and is prepared under a mild condition of 40-80°C by means of adjusting the proportion of the raw materials and the pH value of a solution, the obtained iron-nickel co-doped ammonium phosphomolybdate being used to manufacture an oxygen evolution electrode to be applied to water electrolysis for hydrogen production. Linear sweep voltammetry in a 0.5mol/L H2SO4 solution shows that the iron-nickel co-doped ammonium phosphomolybdate of the present invention exhibits an oxygen evolution overpotential of only 210 mV at 10mA/cm2, which is lower than the oxygen evolution overpotential 370mV of noble metal iridium oxide, the oxygen evolution Tafel slope in an acidic medium of the iron-nickel co-doped ammonium phosphomolybdate is smaller than the oxygen evolution Tafel slope of the noble metal IrO2, and the alternating-current impedance reaction resistance is lower than the oxygen evolution reaction resistance of the noble metal. The electrochemical characteristics enable the iron-nickel co-doped ammonium phosphomolybdate material to achieve obvious technical and cost advantages during PEM water electrolysis for hydrogen produ
Resumen de: WO2025189910A1
A water treatment method and a water treatment system, which solve the technical problem of long process and high energy consumption of hydrogen production from wastewater. The water treatment method comprises steps: pretreating wastewater to obtain an electrolyte of which the solid content, the salt content and the pH meet requirements for electrolysis; and introducing into an electrolytic cell of an electrolysis-based hydrogen production device the electrolyte to be electrolyzed, so as to decompose organic substances in the electrolyte and generate hydrogen. The water treatment system comprises a pretreatment unit used for pretreating wastewater to obtain an electrolyte of which the solid content, the salt content and the pH that meet requirements for electrolysis; and an electrolysis-based hydrogen production unit used for electrolyzing the electrolyte to decompose organic substances in the electrolyte and to generate hydrogen. The electrolysis-based hydrogen production unit comprises an electrolysis-based hydrogen production device. The electrolysis-based hydrogen production device comprises an electrolytic cell housing (11), an anode (12) and a cathode (13). The cathode (13) is made of a sintered metal porous material of which metal elements consist of Ni and V, the metal elements mainly being present as intermetallic compounds.
Resumen de: WO2025189237A1
The invention relates to a catalyst for the hydrogen evolution reaction (HER) and methods for using the catalyst in a water-splitting process. A hydrogen evolution reaction (HER) electrocatalyst, and a method and use for preparing a HER electrocatalyst are disclosed. The method comprises the step of forming a two-dimensional electron gas (2DEG) interface at a heterojunction of at least one of two or more alternating layers of a first complex oxide and a second complex oxide, wherein the or each 2DEG interface exhibits a current density, corresponding to an intrinsic hydrogen evolution reaction (HER) activity that renders the 2DEG interface(s) suitable as an HER electrocatalyst for producing hydrogen (H2) from a water-based electrolyte by water electrolysis.
Resumen de: WO2025189432A1
Disclosed in the present invention are an electric-field-assisted concentrated solar thermochemical fuel preparation system and method. The system comprises: a concentrated solar collector, which is used for focusing and collecting solar energy and providing heat energy for the system; a membrane reactor, which has a reaction chamber, wherein a thermochemical membrane is arranged in the reaction chamber, and divides the reaction chamber of the membrane reactor into a reduction chamber and an oxidation chamber; and an electric-field assistance apparatus, which comprises a pair of electrodes respectively arranged on two sides of the thermochemical membrane. By introducing an electric field as a reaction driving force, the present invention decreases the reaction temperature and reduces the heat loss, and improves the utilization efficiency and stability of solar energy and the selectivity of reaction materials, thereby realizing efficient fuel preparation.
Nº publicación: US2025290208A1 18/09/2025
Solicitante:
W J CERVENY DESIGN LLC [US]
W J CERVENY DESIGN LLC
Resumen de: US2025290208A1
A hydrogen and oxygen gas generation system is provided. The system includes a vessel containing a volume of water and a plurality of electrically conductive electrodes positioned in the volume of water. An ultrasonic unit is positioned in the volume of water and configured to emit sonic waves that inject pulsed energy into the water. The ultrasonic unit can emit square waves and vary both frequency and timing to create complex wave patterns. A baffle structure is positioned between the plurality of electrodes and the ultrasonic unit. The baffle structure prevents direct vertical impact of sonic waves on the electrodes while allowing waves to assist in weakening molecular bonds in the water. The system includes a gas collection unit with separate chambers for collecting hydrogen gas from cathodes and oxygen gas from anodes.
BOPI
Sede Electrónica
