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598
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Updated on
23/12/2025 [06:59:00]
Results 75 to 100 of 598
Absstract of: AU2024224224A1
In a gas pressure balance method in an electrolyser system a predefined pressure difference between pressures in an oxygen gas separation tank and a hydrogen gas separation tank is maintained by controlled release of gases through an oxygen back pressure valve and a hydrogen back pressure valve. in a first step, for each of the oxygen back pressure valves and the hydrogen back pressure valves, a predefined, calibrated pilot gas pressure is generated and in a second step, the predefined, calibrated pilot gas pressures are forwarded to the respective back pressure valves and in a third step, hydrogen and oxygen gasses are released whenever the gas pressures in the hydrogen and oxygen separation tanks exceeds the predefined, calibrated pilot pressure in the respective pilot gas streams.
Absstract of: JP2025176907A
【課題】電解スタックの状態を簡便に診断できるようにする。【解決手段】原料化合物の電気分解により所望のガスを生成する電解スタック１０と、電解スタック１０に電圧を印加する電力変換装置６と、電解スタック１０に印加された電圧を計測する電圧センサ７と、電解スタック１０に電圧を印加した際に電圧センサ７が取得する電圧の時系列データを用いて、電解スタックの静電容量成分で規定される指標を算出し、算出した指標の値を基準値と比較して電解スタックの状態を診断する診断装置２０と、診断装置が診断した結果を外部に出力または表示する出力装置３０と、を備える。【選択図】図１
Absstract of: WO2025247582A1
The invention relates to a method and a facility (100) for producing a hydrogen-containing product, wherein ammonia (1) is subjected to a pretreatment (10) so as to obtain an ammonia feed (2), and the ammonia feed (2) is converted into a cracked gas (3), containing ammonia, hydrogen, and nitrogen, in a heated ammonia cracker (20), a sulfur-free fuel gas being burned so as to form a water-containing flue gas (4a) in order to heat the ammonia cracker (20). The invention is characterized in that at least part of the water-containing flue gas is cooled to below the dew point during the pretreatment (10) of ammonia, condensed water and heated ammonia being obtained.
Absstract of: WO2025249989A1
According to exemplary embodiments of the present invention, provided are a hydrogen purification system and a method for purifying hydrogen, the hydrogen purification system comprising: a first reactor configured to produce a metal nitride and a hydrogen-rich gas by reacting a mixed gas containing hydrogen and nitrogen with a metal absorbent; and a second reactor configured to receive the metal nitride from the first reactor and regenerate same into the metal absorbent, wherein the pressure of the first reactor is 1-5 bar.
Absstract of: JP2025176442A
【課題】本発明は、水素を高収率及び高生成量で生成し得る手段を提供する。【解決手段】本発明の一態様は、粉体の形態の水素化マグネシウム及び粉体の形態のクエン酸を含み、水素化マグネシウムに対するクエン酸の質量比が2.5から3.5の範囲であり、加圧成型物の形態である、水素生成組成物に関する。本発明の別の一態様は、水素生成組成物の製造方法及び水素の生成方法に関する。【選択図】なし
Absstract of: US2025361635A1
A control device for an electrolysis system includes a deterioration prediction unit that predicts a degree of deterioration of each of a water electrolysis stack and a compression stack, and a supplied electrical current control unit that controls an electrical current that is supplied to the water electrolysis stack and an electrical current that is supplied to the compression stack, wherein the supplied electrical current control unit controls the electrical current that is supplied to the stack having a larger degree of deterioration from among the water electrolysis stack and the compression stack to be constant, and adaptively controls the electrical current that is supplied to the stack having a smaller degree of deterioration from among the water electrolysis stack and the compression stack.
Absstract of: AU2024296183A1
The invention provides a device for producing hydrogen gas and a process therefor. It also provides a system for generating electrical energy from hydrogen gas. More particularly, the invention provides a device for producing hydrogen comprising an ammonia cracker having one or more raw cracked gas outlets in fluid communication with a common raw cracked gas flow conduit, one or more gas separators in fluid communication with the ammonia cracker via the common raw cracked gas flow conduit, and in fluid communication with a common partially purified cracked gas flow conduit; one or more filter assemblies, each having a first container having one or more walls, one or more partially purified cracked gas inlets and one or more purified cracked gas outlets, wherein the one or more partially purified cracked gas inlets are in fluid communication with the one or more gas separators via the common partially purified cracked gas flow conduit, the first container containing a single mass of adsorbent comprising silica gel, wherein the one or more partially purified cracked gas inlets and one or more purified cracked gas outlets are arranged such that a partially purified cracked gas flows through the single mass of adsorbent in use.
Absstract of: AU2025200173A1
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. A water electrolysis cell according to an embodiment includes: an anode electrode including an anode catalyst layer in 5 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 10 of a nanosheet; and an electrolyte membrane containing a hydrocarbon-based material, placed between the anode electrode and the cathode electrode. an a n a n d t h e c a t h o d e e l e c t r o d e 36a 36b 36a34a 34b 34a 3／33/3 35 34 36 37 36a 34a 36b 34b 34a 36a an a n b b a a
Absstract of: AU2024296614A1
A hydrogen production device for producing a hydrogen rich gas from ammonia comprising a first chamber comprising an inner wall and an outer wall defining an internal volume, wherein the first chamber contains an ammonia decomposition catalyst disposed between the inner wall and the outer wall, the first chamber having one or more ammonia gas inlets and one or more raw cracked gas outlets, wherein said one or more ammonia gas inlets and one or more raw cracked gas outlets are arranged such that the ammonia flows through the first chamber from the one or more ammonia gas inlets to the one or more raw cracked gas outlets and contacts the ammonia decomposition catalyst; and one or more heat sources for heating the ammonia decomposition catalyst; wherein the first chamber has one or more fins, said one or more fins disposed between the inner wall and the outer wall of the first chamber, wherein the first chamber has an internal surface area, wherein the internal volume is between 10 ml and 100 litres and wherein the ratio of the internal surface area in mm2 to the internal volume in mm3 is between approximately 1:2 and 1:6.
Absstract of: AU2025203497A1
A system and a method for stabilizing hydrogen flow to a downstream process in a facility determining a hydrogen density and pressure profiles in the hydrogen storage unit 5 for different target net hydrogen flows at different time intervals of a time horizon of a renewable power availability profile, determining an operating target net hydrogen flow of a hydrogen feed to the downstream process, determining a target direct hydrogen flow of a hydrogen feed and a target stored hydrogen flow of a hydrogen feed to the downstream process, and controlling the operation of the downstream process based on the operating 10 target hydrogen flows. A system and a method for stabilizing hydrogen flow to a downstream process in a 5 facility determining a hydrogen density and pressure profiles in the hydrogen storage unit for different target net hydrogen flows at different time intervals of a time horizon of a renewable power availability profile, determining an operating target net hydrogen flow of a hydrogen feed to the downstream process, determining a target direct hydrogen flow of a hydrogen feed and a target stored hydrogen flow of a hydrogen feed to the downstream 10 process, and controlling the operation of the downstream process based on the operating target hydrogen flows. ay a y
Absstract of: US2025320419A1
Systems and methods for producing green hydrogen from a source material (e.g., biowaste) are contemplated. The source material is at least partially dehydrated to produce a dried intermediate and recovered water. The dried intermediate is pyrolyzed to produce syngas and a char. The recovered water is electrolyzed to produce oxygen and green hydrogen.
Absstract of: WO2025246138A1
A water electrolysis membrane electrode, and a preparation method therefor and a water electrolyser applying same. The water electrolysis membrane electrode comprises a cathode gas diffusion layer, a cathode catalytic layer, an anion exchange membrane, a hydrophobic anode catalytic layer and an anode gas diffusion layer. Raw materials for preparing the hydrophobic anode catalytic layer comprise an anode catalyst, a hydrophobic material and an anode ionomer, wherein calculated by mass, the ratio of the anode catalyst: the hydrophobic material: the anode ionomer is 10:1-3:1-3. The porosity of the hydrophobic anode catalytic layer is 10-40%.
Absstract of: WO2025246031A1
A metal oxide nanotube array structure catalyst, and a preparation method therefor and a use thereof. The preparation method comprises the following steps: cleaning and polishing a metal sheet; immersing the polished metal sheet as an anode in an electrolyte solution to construct an electrochemical system and carrying out an anodic oxidation reaction to obtain a microporous template having a nanotube structure; immersing the microporous template into a metal salt sol for impregnation; taking out the impregnated microporous template, rinsing the surface of the impregnated microporous template with deionized water, then drying the impregnated microporous template, and calcining the impregnated microporous template at a high temperature to convert the metal salt sol into a metal oxide; and dissolving the microporous template with a dissolution solution to obtain the metal oxide nanotube array structure catalyst.
Absstract of: WO2025246212A1
Disclosed in the present invention is an active water molecule electrolysis apparatus in a limited space, comprising a housing having an airflow channel, wherein a membrane electrode assembly is disposed in the housing; the membrane electrode assembly divides the airflow channel into an air inlet end and an exhaust end, the air inlet end being provided with a continuous unidirectional moisture-permeable coating membrane, and the exhaust end being provided with an ePTFE microporous breathable protective membrane; and the housing is provided with an oxygen discharge channel that communicates the air inlet end with the outside. A device, comprising the active water molecule electrolysis apparatus, the internal space of the device being in communication with the air inlet end of the active water molecule electrolysis apparatus. In this way, the active water molecule electrolysis apparatus in a limited space and the device of the present invention utilize the difference in moisture permeability between the ePTFE microporous breathable protective membrane and the continuous unidirectional moisture-permeable coating membrane to realize continuous unidirectional discharge of water vapor from the inside to the outside environment, thereby effectively improving the efficiency of electrolytic dehumidification.
Absstract of: WO2025246521A1
The present application provides a coupling device for hydrogen gas production and carbon dioxide utilization. The device comprises a spiral heat exchanger, a carbon dioxide collector, a steam generator, and an electrolytic cell, wherein the spiral heat exchanger inputs steam into the steam generator through a first pipe, the steam generator generates electric energy from the steam, the electric energy is transmitted to the electrolytic cell through a cable, and the steam is input into the electrolytic cell through a fourth pipe; the carbon dioxide collector is configured to collect carbon dioxide from flue gas produced by combustion and input the collected carbon dioxide into the spiral heat exchanger through a third pipe; the electrolytic cell is configured to produce hydrogen gas from the steam and the electric energy, and the produced hydrogen gas is introduced into the spiral heat exchanger through a second pipe; and the spiral heat exchanger is configured to promote a chemical reaction between the carbon dioxide and the hydrogen gas, and output a target compound.
Absstract of: WO2025248902A1
A method for electrolyzing water according to the present invention is a method for splitting water with the use of a PEM water electrolysis device which is provided with a cell in which a cathode, an electrolyte membrane, a porous transport layer, and an anode are stacked, wherein: the porous transport layer has a titanium porous body; in the electrolyte membrane-side surface of the titanium porous body, the average value of the areas of pores that open to the surface is 5 μm2 to 45 μm2 inclusive; the standard deviation value of the areas of the pores is 90 μm2 or less; the number of the pores that are present within a rectangular region that has an area of 22,000 μm2 and an aspect ratio of 4:3 is 120 or more; and the pressure applied in the stacking direction of the cathode, the electrolyte membrane, the porous transport layer, and the anode at the time of assembling the cell is set to 6 MPa or more.
Absstract of: WO2025249273A1
Provided is a method for controlling a water electrolysis system with which operation states of a plurality of electrolysis stacks can be independently regulated highly responsively and highly efficiently. This method is for controlling a water electrolysis system which comprises: electrolysis stacks where water is electrolyzed to produce hydrogen and oxygen; a pure water feeder for feeding pure water to the electrolysis stacks; a first regulation part and a second regulation part, which are disposed between each electrolysis stack and the pure water feeder and are capable of regulating the operation state of the electrolysis stack; and an operation state regulation control unit which regulates the first regulation part and the second regulation part to regulate the operation states of the electrolysis stacks. The operation state regulation control unit, after receiving a command to change the operation state of an electrolysis stack, operates the first regulation part on the basis of the operation state and, when a predetermined requirement has been satisfied, operates the second regulation part simultaneously with the first regulation part on the basis of the operation state.
Absstract of: WO2025249562A1
A water electrolysis device (5) is provided with gaskets (10). The gaskets (10) are configured to be used in a state where, with respect to one of the gaskets (10), another one of the gaskets (10) is reversed and overlayed. The gaskets (10) seal, in a cell (100), a space (S1) between a separator (101) and an electrolyte membrane (104) of a membrane assembly (103), and a space (S2) between a separator (102) and the electrolyte membrane (104). The gaskets (10) each have: a seal lateral surface (11) and a contact lateral surface (12) which form a pair; a first seal part (3) for sealing the space (S1) or the space (S2); and a second seal part (4) for sealing, on the outer peripheral side of the electrolyte membrane (104), a plurality of flow paths (2) between the separators (101, 102). The first seal part (3) is formed on the seal lateral surface (11) and the contact lateral surface (12), and the second seal part (4) is formed on the seal lateral surface (11) and the contact lateral surface (12).
Absstract of: WO2025249474A1
An electrolysis cell 21 comprises: a solid electrolyte layer 211 that includes oxide particles containing Zr; a fuel electrode layer 213 that is stacked and arranged on one surface side of the solid electrolyte layer 211 and includes metal particles and oxide particles containing Ce; and an air electrode layer 212 that is stacked and arranged on the other surface side of the solid electrolyte layer 211. A Raman spectrum of Stokes scattered light of each of the solid electrolyte layer 211 and the fuel electrode layer 213 (213a) has a peak in a wave number region of 334 cm-1 or more and 531 cm-1 or less. When the half widths of the peaks of the Raman spectra of the solid electrolyte layer 211 and the fuel electrode layer 213 (213a) in the wave number region are defined as an electrolyte half width and a fuel electrode half width, respectively, the ratio of the electrolyte half width to the fuel electrode half width is 3.5 or more and 5.7 or less.
Absstract of: WO2025249471A1
An electrolysis cell 21 comprises: a solid electrolyte layer 211 including ion-conductive oxide particles; a fuel electrode layer 213 laminated on the back surface 211A side of the solid electrolyte layer 211; and an air electrode layer 212 laminated on the upper surface 211B side of the solid electrolyte layer 211. The average particle diameter of the ion-conductive oxide particles in the solid electrolyte layer 211 is 0.40-1.24 µm.
Absstract of: WO2025249470A1
An electrolysis cell 21 includes: a solid electrolyte layer 211; a fuel electrode layer 213 stacked and arranged on the rear surface 211A side of the solid electrolyte layer 211; and an air electrode layer 212 stacked and arranged on the front surface 211B side of the solid electrolyte layer 211. A mutual diffusion layer 214 in contact with both the solid electrolyte layer 211 and the fuel electrode layer 213 is formed between the solid electrolyte layer 211 and the fuel electrode layer 213. The mutual diffusion layer 214 includes: a first element which is one element constituting the solid electrolyte layer 211; and a second element which is one element constituting the fuel electrode layer 213 and is different from the first element. The thickness T1 of the mutual diffusion layer 214 falls within the range of 1.5 μm or more and 4.8 μm or less.
Absstract of: US2025373010A1
A system combination having at least two electrolysis systems, a power supply source having a direct voltage output, and a central supply line is provided. The central supply line is connected to the direct voltage output of the power supply source, so that a direct current can be fed into the central supply line and a central DC network designed for high voltage is provided, to which DC network the electrolysis systems are connected by means of the central supply line. The power supply source has, as a power generator, a wind turbine, to which a rectifier having a direct voltage output is connected, the direct voltage output being designed for the high voltage.
Absstract of: US2025368520A1
The invention relates to a system and a method for producing ammonia, including an ammonia reactor which is formed for the generation of ammonia (NH3) from a synthesis gas, where the synthesis gas includes hydrogen (H2) and nitrogen (N2), further including an electrolizer which is formed to generate hydrogen and oxygen from water, where the electrolizer is operated with renewable energies, further including a gas turbine operated with hydrogen, where the exhaust gas of the gas turbine containing nitrogen (N2) is employed for the generation of the synthesis gas.
Absstract of: US2025369130A1
The present disclosure provides a water electrolysis membrane electrode, a method for preparing the water electrolysis membrane electrode, and a water electrolyzer applying the water electrolysis membrane electrode. The water electrolysis membrane electrode includes a cathode gas diffusion layer, a cathode catalytic layer, an anion exchange membrane, a hydrophobic anode catalytic layer, and an anode gas diffusion layer that are stacked in sequence. Raw materials for preparing the hydrophobic anode catalytic layer include an anode catalyst, a hydrophobic material, and an anode ionomer. A mass ratio of the anode catalyst, the hydrophobic material, and the anode ionomer is 10:1-3:1-3. A porosity of the hydrophobic anode catalytic layer is 10%-40%.
Nº publicación: US2025369135A1 04/12/2025
Applicant:
POSTECH RES & BUSINESS DEV FOUND [KR]
POSTECH RESEARCH AND BUSINESS DEVELOPMENT FOUNDATION
Absstract of: US2025369135A1
The present invention relates to an electrode for a hydrogen evolution reaction in an alkaline water electrolysis cell, wherein the electrode comprises: a co-catalyst consisting of a composite containing a Lewis acid-containing material and a metal-organic framework (MOF); and a catalyst surrounded by the co-catalyst. According to the present invention, the water dissociation step of the alkaline hydrogen evolution reaction is promoted, hydrogen gas generated by the hydrogen evolution reaction can easily permeate through the structure, and Nafion is uniformly dispersed by the large pores created by the MOF, thereby implementing the co-catalyst effect across the entire surface while minimizing catalyst poisoning.
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