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Última actualización
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Resultados 575 a 600 de 757
Resumen de: WO2025174066A1
The present application relates to a plasmonic phenomenon-based symmetric ammonia electrolysis system and an ammonia electrolysis method using same. A hybrid electrode, according to embodiments of the present application and the symmetric ammonia electrolysis system comprising same, may reactivate the surface of a catalyst by utilizing plasmonic phenomena during an electrochemical reaction by using a plasmonic-active electrode (antenna-reactor) composite electrode.
Resumen de: WO2025173338A1
This pretreatment method comprises, prior to incorporating a mesh plate (80) into a cell, exposing the mesh plate (80) to ultrasonic waves while the mesh plate (80) is immersed in water. Hydrophilicity of the mesh plate (80) is thereby improved. Stagnation of gas in the mesh plate (80) when an electrochemical reaction is performed in a cell can therefore be suppressed. The efficiency of an electrochemical reaction in a cell can be improved as a result.
Resumen de: WO2025173297A1
A water splitting device for generating hydrogen when irradiated with light, said water splitting device comprising: an electrolytic bath that is filled with an electrolytic solution; and a water splitting cell that is immersed in the electrolytic solution and comprises a laminate in which an anode, a hole transport layer, a Perovskite battery cell, an electron transport layer, and a cathode have been laminated in the given order, and an electrically insulating protective material which covers the outer periphery of the laminate.
Resumen de: WO2025171442A1
The invention is directed to methods of electrolysis and cells used for the same. The method comprising generating and delivering a humidified gas stream or liquid water to an electrolysis cell comprising an anode side, a cathode side and an ion permeable membrane located between them wherein the anode side has a first catalytic layer and the cathode side has a second electrolytic layer, contacting the humidified gas stream or liquid water with the first catalytic layer and contacting a portion of the ion- permeable membrane on the cathode side with liquid water, applying a voltage such that oxygen gas is generated at the anode and hydrogen gas is generated at the cathode. The invention is also related to an electrolytic cell for performing the methods and a kit that allows for retrofitting existing cells to perform the methods.
Resumen de: WO2025172702A1
An apparatus comprising an electrolyser subsystem (20), a Haber Bosch subsystem (22), and an Ostwald subsystem (24), and a method for producing nitric acid. Fluid passageways are configured to: route hydrogen produced by the electrolyser subsystem (20) to the Haber Bosch subsystem (22) via a first path (26) for use in a Haber process at the Haber Bosch subsystem (22) to produce ammonia; route at least a portion of the ammonia produced by the Haber Bosch subsystem (22) to the Ostwald subsystem (24) via a second path (28) for use in an Ostwald process at the Ostwald subsystem (24) to produce nitric acid; and route at least a portion of steam produced using heat from the Ostwald subsystem (24) to the electrolyser subsystem (20) via a third path (30) for use as at least a part of an infeed gas for the electrolyser subsystem (20).
Resumen de: WO2025172046A1
The invention relates to a method for operating an electrolyzer (1) comprising an anode chamber (3) and a cathode chamber (5), in which water (H2O) is supplied as a reactant and hydrogen (H2) and oxygen (O2) are generated as product gases. On the anode side, the oxygen product gas, which also contains hydrogen as a foreign gas, is generated in a product flow out of the anode chamber (3) and is introduced into a horizontal anode-side collecting line (7) having a surrounding wall (11) and is removed via the collecting line (7), wherein water (H2O) is sprayed onto an inner surface of the surrounding wall (11) of the collecting line (7) so that the surrounding wall (11) is wetted with water and the inner surface is inerted. The invention additionally relates to an electrolyzer (1), in particular for carrying out the method.
Resumen de: DE102024201557A1
Die Erfindung betrifft ein Verfahren zum Betrieb einer Elektrolyseanlage (1, 20) umfassend einen Elektrolyseur (11) zur Erzeugung von Wasserstoff (H2) und Sauerstoff (O2) als Produktgase, wobei Wasser als Edukt zugeführt wird und an einer protonenleitenden Membran (21) aus einem fluorfreien Polymer (24) zu Wasserstoff (H2) und Sauerstoff (O2) gespalten wird, wobei das Polymer (24) ein nicht-funktionelles Polymermaterial mit einer funktionellen hydrophilen Gruppe aufweist, wobei ein Produktgasstrom (5) in einem Phasengemisch umfassend Wasser (H2O) sowie ein jeweiliges Produktgas gebildet wird, und wobei ein Produktgasstrom einem dem Elektrolyseur (11) nachgeschalteten Gas-Separator (3, 13) zugeführt wird, und bei dem die Freisetzung eines ionischen Abbauproduktes der funktionellen hydrophilen Gruppe der Membran (21) über die Betriebszeit bestimmt wird, wobei dessen zeitlicher Verlauf der Konzentration ermittelt wird, wobei ein Maß für die betriebsbedingte Degradation der protonenleitenden Membran (21) infolge einer Freisetzung des ionischen Abbauprodukts der hydrophilen Gruppe ermittelt wird.Die Erfindung betrifft weiterhin eine entsprechende Elektrolyseanlage (1, 20) sowie eine Messsystem zur Durchführung des Verfahrens.
Resumen de: KR20250125005A
본 발명은 수전해 스택에 관한 것으로서, 복수의 장착구멍이 형성된 애노드측 플레이트와, 상기 애노드측 장착구멍에 상응하는 위치에 형성된 복수의 장착구멍을가지는 캐소드측 플레이트와, 상기 장착구멍에 상응하는 구멍을 가지며 상기 애노드측 플레이트와 상기 캐소드측 플레이트가 연결되는 수전해 스택바디와, 상기 장착구멍에 착탈가능하게 삽입되는 복수의 셀 모듈을 포함하여 구성되고, 상기 셀 모듈은, MEA를 포함하며 기둥형상으로 형성되는 MEA유닛과, 애노드측 유닛과, 캐소드측 유닛을 포함하여 구성되고, MEA유닛을 애노드측 플레이트와 캐소드측 플레이트에 착탈하게 구성함과 동시에 MEA유닛을 기둥형으로 복수개가 착탈가능하게 구성함으로써 스택의 용량을 용이하게 증가시킬 수 있고 스택에 용이하게 착탈가능하게 구성하여 조립이 용이하고 경제적인 수전해 스택을 제공할 수 있다. 또한, 기둥형상으로 병렬로 조립하여 고압의 압력을 사용하더라도 MEA가 손상되지 않을 뿐만 아니라 기둥형상의 MEA지지체가 애노드측 플레이트와 캐소드측 플레이트에 단단하게 체결되어 축하중을 지지할 수 있으므로 고압 압력에도 견딜 수 있는 수전해 스택을 제공할 수 있다.
Resumen de: WO2025174066A1
The present application relates to a plasmonic phenomenon-based symmetric ammonia electrolysis system and an ammonia electrolysis method using same. A hybrid electrode, according to embodiments of the present application and the symmetric ammonia electrolysis system comprising same, may reactivate the surface of a catalyst by utilizing plasmonic phenomena during an electrochemical reaction by using a plasmonic-active electrode (antenna-reactor) composite electrode.
Resumen de: AU2023359478A1
The invention relates to a method for joining a stack of elements together, the method comprising the steps of: individually joining subassemblies of the elements together; joining the subassemblies together by arranging a joint between each subassembly to form the stack of elements; applying consecutive phases of heating and cooling to the stack of elements while applying at least one clamping action to the stack of elements between two different phases of heating and cooling.
Resumen de: CN120380621A
A solid oxide cell stack has a combined flow distributor and contact enabler made of a pressed metal foil with diversion structures and contact regions between interconnect layers and cell layers in the stack.
Resumen de: KR20200094876A
The present invention relates to a solid oxide fuel cell and a solid oxide electrolysis cell. According to the present invention, the solid oxide fuel cell and the solid oxide electrolysis cell comprises, respectively; a flat tubular unit cell (100) having a plurality of tubular through-holes (111a, 111b) for transferring fuel gas formed in a longitudinal direction; an upper cap (200) coupled to one longitudinal end of the flat tubular unit cell (100) and blocking one end of the flat tubular unit cell (100) from the outside while communicating the plurality of tubular through-holes (111a, 111b) with each other; a cell lower slit (300) coupled to the other longitudinal end of the flat tubular unit cell (100), having an opening part (320) opening the plurality of tubular through-holes (111a, 111b) formed therein, and having an insertion groove (330) formed on a lower surface; and a manifold (400) coupled to the cell lower slit (300), having spaces (420, 430) formed therein to communicate with the plurality of tubular through-holes (111a, 111b), including a reaction gas inlet (450) through which the fuel gas is supplied and a reaction gas outlet (460) through which the fuel gas reacting with air is discharged, and dividing the spaces (420, 430) and the plurality of tubular through-holes (111) into halves to form the flow of fuel gas in a U-shape. Accordingly, since a flat tubular unit cell and a flat planar unit cell are divided into halves, respectively, inflow and outflow of t
Resumen de: WO2024081426A2
The present disclosure relates to circuits for connecting components of a hydrogen plant to a power grid to power the components in an efficient manner. In one implementation, power-side alternate current (AC) to direct current (DC) converters may be connected to a source power grid without the need for an isolation transformer by providing separate buses between the power-side AC-DC converters and load-side DC-DC converters instead of a shared DC bus between the converters. Other implementations for connecting components of a hydrogen plant to a power grid may include an adjustable transformer, such as a tappable transformer or an autotransformer, to connect any number of auxiliary loads of the plant to the power grid. The adjustable transformer may provide for various types of auxiliary load devices to connect to the power provided by the transformer at the same time, including both three-phase devices and one-phase devices.
Resumen de: EP4603490A1
The purpose of the present invention is to provide a compound capable of producing a polymer having excellent alkali durability, a polymer including the compound as a monomer, an electrolyte membrane having excellent alkali durability using the polymer, and a fuel cell and an electrolysis apparatus using the electrolyte membrane. A compound represented by the following Formula (1) and a polymer including the compound as a monomer. (X<1>-)2Ar<1>(-L<1>-R
Resumen de: US2025236972A1
Electrolyzer for production of hydrogen gas and comprising a stack of bipolar electrodes sandwiching ion-transporting membranes between each two of the bipolar electrodes. Each bipolar electrode comprises two metal plates welded together back-to-back forming a coolant compartment in between and having a respective anode surface and an opposite cathode surface, each of which is abutting one of the membranes. The plates are embossed with a major vertical channel and minor channels in a herringbone pattern for transport of oxygen and hydrogen gases. The embossed herringbone pattern is provided on both sides of the metal plates so as to also provide coolant channels in a herringbone pattern inside the coolant compartment.
Resumen de: US2023243054A1
A separator for alkaline electrolysis comprising a porous support (10) and a first (20b) and second (30b) porous layer provided on respectively one side and the other side of the porous support, characterized in that the porous support has a thickness (d1) of 150 μm or less and the total thickness (d2) of the separator is less than 250 μm. Also a method is disclosed wherewith such a separator may be prepared.
Resumen de: MX2025001242A
The invention relates to a method for heating a furnace comprising radiant tubes and being able to thermally treat a running steel strip comprising the steps of: i. supplying at least one of said radiant tubes with H<sub>2</sub> and O<sub>2</sub> such that said H<sub>2</sub> and said O<sub>2</sub> get combined into heat and steam, ii. recovering said steam from said at least one of said radiant tubes, iii. electrolysing said steam so as to produce H<sub>2</sub> and O<sub>2</sub>, iv. supplying at least one of said radiant tubes with said H<sub>2</sub> and O<sub>2</sub> produced in step iii, such that they get combined into heat and steam.
Resumen de: US2025116022A1
A method of operating a solid oxide electrolysis cell (SOEC) system at partial load, the SOEC system including a plurality of branches each including at least one SOEC stack, includes determining a thermally neutral target voltage and cycling an ON phase and an OFF phase for each of the branches such that the SOEC system operates at an average operating power equal to a chosen percentage of the operating power at the thermally neutral target voltage. In the ON phase, the SOEC stacks in a given branch operate at the thermally neutral target voltage, and in the OFF phase, the SOEC stacks in the given branch are unloaded to an open circuit voltage and operate at 0% of rated power. The frequency of OFF phases for each branch is determined such that stronger or healthier branches have a lower frequency of OFF cycles than weaker or less healthy branches.
Resumen de: CN119677896A
In one embodiment, discussed herein is a method of producing hydrogen, the method comprising: (a) providing an electrochemical reactor having an anode, a cathode, and a membrane between the anode and the cathode, where the membrane is both electronically and ionically conductive; (b) introducing a first stream to the anode, wherein the first stream comprises ammonia; (c) introducing an oxidizing agent to the anode; and (d) introducing a second stream to the cathode, wherein the second stream comprises water and provides a reducing environment to the cathode; wherein the hydrogen is generated from water in an electrochemical manner; wherein the first stream and the second stream are separated by the membrane; and wherein the oxidant and the second stream are separated by the membrane.
Resumen de: US2025250685A1
The water electrolysis system includes: a first cooling device that cools a gas containing a predetermined gas component generated by electrolysis of water to a first cooling temperature that is higher than or equal to a boiling point of the gas component so that the first impurity having a boiling point higher than the first cooling temperature can be separated; a gas-liquid separation device that separates the first impurity from the gas; and a second cooling device that cools the gas from which the first impurity is separated to a second cooling temperature that is lower than the boiling point of the gas component, and liquefies the gas component so that the second impurity having a boiling point lower than the second cooling temperature can be separated as a gas.
Resumen de: EP4603183A1
According to the embodiments of the present disclosure, an ammonia decomposition catalyst may be prepared by performing heat treatment on alumina, a lanthanum compound and a cerium compound in a reducing gas atmosphere to form a composite oxide on an alumina support, and supporting an active metal including ruthenium on the composite oxide. According to further embodiments, the present disclosure provides a catalyst with improved dispersibility which is particularly suitable for ammonia decomposition.
Resumen de: EP4603181A1
The invention provides a novel and efficient catalyst for HER composed of Ru nanoparticles dispersed over a support consisting of titanium oxynitride and high surface area carbon material, such as graphene oxide, (TiON-C) with a particularly low Ru loading of only 6 wt.%. In an alkaline electrolyte, the Ru/TiON-C composite significantly surpasses the HER performance of the Ru/C analog. More importantly, Ru/TiON-C is both intrinsically (nearly 3 times higher turnover frequency) and practically (4 times higher mass activity) better performing HER catalyst than the commercial Pt/C benchmark.
Resumen de: AU2023390125A1
Catalyst ink formulas for the preparation of CCMs are described. The catalyst ink formulas comprise a catalyst, an ionomer, a solvent, and a porogen soluble in the solvent. The catalyst ink formula may also comprise an additive, such as an electron conductive polymer. The anode catalyst coating layer or both the anode and the cathode catalyst coating layers prepared from the catalyst ink formula comprises uniformly distributed nanopores that allow easy gas removal and uniform water feed distribution, which will avoid or reduce the direct energy losses for the electrolyzers. Catalyst coated membranes and methods of making a catalyst coated membranes are also described.
Resumen de: EP4603447A1
Method for producing a hydrogen product from ammonia, comprising the steps of:- Providing an ammonia feed stream;- Passing the ammonia feed stream to at least one ammonia pre-cracking reactor for producing a partly converted ammonia feed stream comprising ammonia, hydrogen and nitrogen by a pre-cracking reaction, said pre-cracking reactor comprising a pre-cracking catalyst bed comprising from 20 wt% to 60 wt% of nickel, preferably from 25 wt% to 50 wt% of nickel as a pre-cracking catalytically active material,- Passing the partly converted ammonia feed stream to an ammonia cracking reactor for producing an effluent gas stream comprising hydrogen and nitrogen and optionally also unconverted ammonia by a cracking reaction, said cracking reactor comprising a cracking catalyst bed comprising from 10 wt% to 20 wt% of nickel as a cracking catalytically active material.
Nº publicación: EP4602178A1 20/08/2025
Solicitante:
UNIV ROCHESTER [US]
University of Rochester
Resumen de: WO2024081205A1
A composition that produces hydrogen includes a nanoparticle or plurality of nanoparticles; an external source of electrons such as an electrogenic bacterium or a plurality of electrogenic bacteria and a carbon source; and an aqueous medium. The nanoparticles and the aqueous medium are combined in a mixture; upon exposure to electromagnetic radiation with a wavelength in the absorption profile of the nanoparticles, the nanoparticles generate an electron that can reduce a proton in the aqueous medium; and the source of electrons is capable of reducing the nanoparticles. The nanoparticles may comprise cadmium chalcogenide or water-soluble cadmium chalcogenide quantum dots. The electrogenic bacterium or bacteria may comprise Shewanella oneidensis, a Geobacter species or any bacterium capable of extracellular electron transfer. The electromagnetic radiation has a wavelength of between approximately 400 and 1100 nanometers, or preferably 530 nm. The aqueous medium may be wastewater and the carbon source may comprise lactate.
BOPI
Sede Electrónica
