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1002
resultados
Última actualización
07/06/2025 [07:01:00]
Resultados 50 a 75 de 1002
Resumen de: US2024044023A1
Zero-gap electrochemical cell architectures that employ molecular-level capillary and/or diffusion and/or osmotic effects to minimize the need for macroscopic external management of the electrochemical cell. Preferably, these effects intrinsically respond to the electrochemical cell conditions, making them self-regulating. In one example is disclosed an electro-synthetic or electro-energy cell, and method of operation, including a reservoir for containing a liquid electrolyte, a first gas diffusion electrode positioned outside of the reservoir, and a second electrode positioned outside of the reservoir. A porous capillary spacer is positioned between the first gas diffusion electrode and the second electrode, the porous capillary spacer having an end that extends into the reservoir. Preferably, the porous capillary spacer is able to fill itself with the liquid electrolyte when the end of the porous capillary spacer is in liquid contact with the liquid electrolyte in the reservoir.
Resumen de: US2025149602A1
A SOC stack system comprises one or more solid oxide cell stacks and multi-stream solid oxide cell stack heat exchanger(s).
Resumen de: CN119698389A
The invention relates to a method and a device for producing hydrogen by decomposing water molecules by thermochemical reaction using small amounts of active substances. The thermochemical reaction is initiated by solar energy having a medium concentration of up to 50 times sunlight, which may be effected by linear or parabolic concentrators.
Resumen de: MX2024010250A
The invention relates to a device for generating hydrogen gas and oxygen gas from water, comprising: a case, which forms a hydrolysis chamber designed to contain an amount of water; electrode means that act as a cathode and as an anode; and gas-separating means, disposed in the hydrolysis chamber between the cathode and the anode, which comprise a permeable membrane segment suitable for preventing the generated hydrogen gas and oxygen gas from passing through the permeable membrane segment and mixing together, the hydrolysis chamber being divided into a first portion that contains the cathode and a second portion that contains the anode, wherein the first and second chamber portions are in fluid communication with respective pipes for hydrogen gas and for oxygen gas. The invention also relates to a system for the same purpose, comprising at least one device as described above.
Resumen de: MA62942A1
This invention constitutes, in itself, an innovative solution for the production of hydrogen based on the phenomenon of water electrolysis by a flat electrode electrolyzer. The electrical energy used comes from the conversion of solar energy into electricity using a photovoltaic system. The adaptation between the photovoltaic source and the electrolyzer is done by means of a device that does not exchange any energy with the PV-electrolyzer system. The proposed technique is based on the search for the optimal operating point by varying the distance between the two flat electrodes placed opposite each other by fixing one of the two plates (electrodes) and moving the other plate in translation. Indeed, a change in the inter-electrode distance causes a change in the volume of water between them; which subsequently influences the value of the connected load (electrolyzer). The moving plate approaches or moves away from the fixed electrode depending on the optimal operating point of the photovoltaic source. This movement is driven by the action of a stepper motor that transforms the rotational movement into a translational movement of the plate. This coupling, with a minimum of interfacing electronics, would lead to a substantial reduction in costs and thus improve the economic viability of hydrogen solar systems.
Resumen de: CN119095792A
The present invention relates to a process for producing methanol by synthesis gas produced by combining electrolysis of a water feedstock for producing a stream comprising hydrogen with electrolysis of a carbon dioxide rich stream for producing a stream comprising CO and CO2 wherein the CO/CO2 molar ratio of the synthesis gas is greater than 2. The invention also relates to a method for producing syngas by subjecting a combined feed gas stream of CO2 and steam to one-way co-electrolysis in an SOEC unit.
Resumen de: WO2025109966A1
An ammonia decomposition system (100) comprises: a first line (L1) to which ammonia (X1) is supplied; a decomposition device (3) that is provided on the first line (L1) and generates a decomposition gas (X3) containing hydrogen from ammonia (X1); and a second line (L2) that is in fluid communication with the first line (L1) at a position downstream of the decomposition device (3), the second line (L2) supplying liquid ammonia (X2) to the decomposition gas (X3) flowing through the first line (L1) and generating a mixed gas (X4).
Resumen de: WO2025109618A1
A Green HYDROGEN production apparatus is provided having a modular reactor vessel. The reaction is managed to safely drive the reaction to completion to maximize HYDROGEN production. A HYDROGEN outlet provides for the collection of the generated HYDROGEN from the reactor vessel (e.g. 1)
Resumen de: WO2025108003A1
Provided are an iridium-oxide-based catalyst and a preparation method therefor and the use thereof, and a membrane electrode and a preparation method therefor and the use thereof. The catalyst comprises an oxide of iridium, wherein the oxide of iridium comprises an oxide of iridium having vacancies, the vacancies comprising iridium vacancies or oxygen vacancies; and iridium oxide comprises metastable-phase iridium oxide. A hydrogen-oxygen flame method is used as the preparation method for the catalyst, and can respectively regulate and control vacancies and crystal phases. The catalyst has both high-activity defect vacancies and stable high-activity crystal phases, and has a low overpotential and a high oxygen evolution catalyzing activity when being applied to water electrolysis.
Resumen de: CN113666650A
The invention provides a method for preparing an auxiliary cementing material from extracted titanium slag, and the auxiliary cementing material. The method comprises the steps that the extracted titanium slag is washed with water till soluble chloride ions in the extracted titanium slag are completely dissolved out to obtain first filter residues and first filtrate, wherein the first filtrate mainly comprises calcium chloride and magnesium chloride; the first filter residues are dried and then ground to obtain powder with the first particle size; the powder with the first particle size is continuously washed with water to reduce the content of chloride ions in the powder to 2/10000 or below, and filtering is performed to obtain a second filter residue and a second filtrate; and the second filter residues are dried and mechanically activated to obtain second-particle-size powder, wherein the second-particle-size powder can be used as an auxiliary cementing material. The method has the advantages that chloride ions in the titanium extraction slag are removed through water leaching, secondary water leaching is carried out by means of the characteristic that filter residues obtained after water leaching do not absorb moisture, residual chloride ions are fully removed, the super-active superfine slag powder with the high activity reaching up to the S105 level or above is prepared, energy is saved, environment friendliness is achieved, and the added value of products is increased.
Resumen de: WO2025110878A1
An electrolyzer for generating hydrogen from water comprising electrodes and an electrically non-conductive separator layer extending in a substantially vertical plane comprising macroscopic through holes, and wherein the electrodes themselves comprise an anode and a cathode, characterized in that the electrodes are each furnished at opposite faces of the separator, and that the electrodes each comprise a plurality fins and wherein each fin of the plurality of fins projects outwardly from the layer for restricting the upward movement of electrode generated bubbles to a bubble stream that is substantially parallel to the vertical plane.
Resumen de: AU2023374771A1
Cell for forming an electrolyser comprising at least one diaphragm or membrane having a first side and a second side opposite the first side, a first cell plate, arranged on the first side of the diaphragm, provided with a first electrode, provided with an inlet channel for supplying or draining electrolyte to or from the electrode, provided with a first discharge channel for discharging oxygen from the electrode, at least one second cell plate, arranged on the second side of the diaphragm, provided with a second electrode and provided with a second discharge channel for discharging hydrogen from the electrode wherein the at least one first and second cell plate are made of a polymer material.
Resumen de: US2025171922A1
An air separation system includes an air separation unit and at least one solid oxide electrolyser cell, the air separation unit including a source gas infeed, the at least one solid oxide electrolyser cell including an anode, a cathode and an electrolyte, a steam input and an oxygen rich gas output, where the oxygen rich gas output connects to the source gas infeed of the air separation unit.
Resumen de: US2025171911A1
The present application relates to a hydrogen production system, and a thermal management method and apparatus therefor. The hydrogen production system includes: at least two electrolytic cells; and a post-treatment device, the at least two electrolytic cells sharing the post-treatment device, and the post-treatment device including first electrolyte inflow branch pipes and second electrolyte inflow branch pipes, wherein the first electrolyte inflow branch pipes share a single cooling apparatus and are used for guiding a cold electrolyte into a corresponding electrolytic cell, and the second electrolyte inflow branch pipes are bypass branch pipes of the cooling apparatus and are used for guiding a hot electrolyte into a corresponding electrolytic cell. Compared with the prior art, embodiments of the present invention implement accurate control on the temperature of each electrolytic cell and improve system efficiency.
Resumen de: US2025171920A1
An electrolyzer system comprises one or more electrolyzer cells each comprising a first half cell with a first electrode and a second half cell with a second electrode and a controller to control a current applied through the one or more electrolyzer cells, wherein the controller is configured to dynamically set the current density within a current density range of from about 150 mA/cm2 to about 3000 mA/cm2, and wherein the controller is configured to set the current density to a first value when a first condition is met and to a second value when a second condition is met.
Resumen de: US2025171910A1
This invention discloses a method, device, and system for the direct electrolysis of seawater without desalination for hydrogen production. By immersing the direct electrolysis device for hydrogen production from seawater without desalination directly into seawater, driven by the pressure difference at the interface between seawater and the self-driven electrolyte, seawater continuously enters the device through the solution mass transfer layer. The self-driven electrolyte induces the water to enter the electrolyte solution, while the hydrophobic action of the solution mass transfer layer effectively blocks non-water impurities in the solution. During electrolysis, the water in the self-driven electrolyte is consumed to produce hydrogen and oxygen, inducing the regeneration of the electrolyte, maintaining the pressure difference at the interface, and achieving a self-circulating excitation drive without additional energy consumption.
Resumen de: US2025171921A1
The present invention relates to a system and method for producing hydrogen gas. The system comprises at least one gas transport vessel which is arranged to transport at least hydrogen up through water by buoyancy, a heat transfer unit connected to an electrolysis unit and arranged to transfer at least a portion of the waste heat from the electrolysis unit to the hydrogen gas that is to be transported by the gas transport vessel.
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: US2025171919A1
A membrane electrode assembly for a water electrolysis cell includes a polymer electrolyte membrane having a first main surface and a second main surface, a first electrode catalytic layer on the first main surface of the polymer electrolyte membrane, a second electrode catalytic layer on the second main surface of the polymer electrolyte membrane, an annular outer peripheral film disposed to surround an outer peripheral surface of the polymer electrolyte membrane, and a first adhesive film having a substrate layer and an adhesive agent layer. The first main surface has a first annular non-covered section not covered with the first electrode catalytic layer along an outer periphery, and the adhesive agent layer of the first adhesive film is adhered to the first annular non-covered section of the polymer electrolyte membrane and to a main surface of the outer peripheral film at the same side as the first main surface.
Resumen de: US2025171917A1
Disclosed herein are a defect-rich molybdenum disulfide (MoS2) monolayer, its production method and uses thereof. The defect-rich MoS2 monolayer is characterized in having a vacancy density up to 3.35×1014/cm2, and is produced by vapor deposition on a substrate in the presence of potassium chloride (KCl). The defect-rich MoS2 monolayer could serve as an electrocatalyst in hydrogen evolution reaction (HER) to convert proton into hydrogen. Also disclosed herein is a MoS2-based microelectroactalysis cell, which is a three-electrode system, comprising a working electrode, a counter electrode, a reference electrode and an electrolyte; in which the working electrode, the counter electrode or both independently comprises the vacancy-rich MoS2 monolayer coated thereon.
Resumen de: US2025171915A1
A method by which an environmental energy (e.g., wave energy) is harvested, converted into electrical power, and thereafter used to electrolyze seawater into hydrogen and chlorine gases. Those gases are recombined into hydrogen chloride from which is formed hydrochloric acid solution which is diluted and deposited at a depth sufficient to ensure its neutralization and sequestration for a significant period of time (e.g., for over a millennium). By removing chloride ions from a portion of the sea adjacent to its upper surface and depositing them into a portion of the sea more adjacent to its bottom, acidity is shifted from the surface to base of the sea, and the surface ocean is given a greater ability to absorb and buffer atmospheric carbon dioxide without a corresponding increase in acidity.
Resumen de: US2025171300A1
The present invention relates to a process for the reforming of ammonia, wherein the process comprises(i) providing a reactor containing a catalyst comprising Ru supported on one or more support materials, wherein the one or more support materials display a BET surface area of 20 m2/g or more, and wherein the catalyst contains 1 wt.-% or less of Ni and Co;(ii) preparing a feed gas stream comprising NH3;(iii) feeding the feed gas stream prepared in (ii) into the reactor and contacting the feed gas stream with the catalyst at a pressure of greater than 10 bara and at a temperature in the range of from 200 to 750° C.;(iv) removing an effluent gas stream comprising H2 and N2 from the reactor.
Resumen de: US2025170522A1
The present invention relates to the use, for the drying of wet gas comprising traces of alkaline hydroxide, of a solid desiccant comprising at least one kaolin compound.The invention also relates to the process for drying wet gas comprising traces of alkaline hydroxide, comprising at least one stage of bringing said wet gas into contact with a solid desiccant comprising at least one kaolin compound.
Resumen de: US2025174692A1
Provided are methods, comprising applying a voltage to a first parent mixture comprising (a) a first material and (b) a second metal, the first material optionally comprising a metal having a standard reduction potential less than the standard hydrogen electrode (SHE) at 0 V vs SHE, the applying being performed in the presence of a counter electrode that comprises the second metal, the first parent mixture and the counter electrode contacting an electrolyte, the applying being performed under such conditions that the second metal is selectively removed from the first parent mixture so as to leave behind a nanoporous portion of the first material, the nanoporous portion of the first material comprising interconnected ligaments defining pores therebetween, the pores being open to the environment exterior to the nanoporous portion of the first material, the pores being characterized as having an average cross-section in the range of from about 5 to about 100 nm, the applying optionally being performed in an inert environment.
Nº publicación: US2025171918A1 29/05/2025
Solicitante:
AGFA GEVAERT NV [BE]
Agfa-Gevaert NV
Resumen de: US2025171918A1
A separator for alkaline electrolysis (1) comprising a porous support (10), a first porous layer (20b) provided on one side of the porous support and a second porous layer (30b) provided on the other side of the porous support, wherein the first and the second porous layer are partially impregnated into the porous support and each have an overlay thickness d1 and d2 respectively, said overlay thickness being defined as the part of each porous layer which is not impregnated into the porous support, characterized in that a) d1 is smaller than the overlay thickness of the second porous layer (d2), and b) d1 is at least 20 μm.
BOPI
Sede Electrónica
