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CATALYST AND ANODE FOR HYDROGEN PRODUCTION BY ELECTROLYSIS AS WELL AS PREPARATION METHOD, ACTIVATION METHOD AND USE THEREOF

Resumen de: US2025257483A1

Clean version of Abstract A catalyst and anode for hydrogen production by electrolysis as well as a preparation method, activation method and use thereof are provided. The anode for hydrogen production by electrolysis includes a catalyst which is nickel iron barium hydrotalcite with a nano hexagonal sheet structure and a thickness of 100-200 nm. The catalyst can be prepared by a one-step solvothermal reaction method. Alkaline-earth metal ions are evenly doped in the nickel iron barium hydrotalcite and are in atomic level dispersion, so that the anode for hydrogen production by electrolysis based on the catalyst, when being applied to a process for hydrogen production by electrolysis of an aqueous solution containing chlorine ions, not only can maintain good catalytic performance, but also has greatly improved chlorine ion corrosion resistance, leading to significant improvement of working stability and service life.

水電解装置

Resumen de: US2025250686A1

A water electrolysis device includes a water electrolysis module that generates hydrogen by water vapor electrolysis. The water electrolysis device includes: a blower configured to supply hydrogen to the water electrolysis module; a recycle passage configured to supply generated hydrogen generated by the water electrolysis module from the water electrolysis module to an intake port of the blower; a condenser configured to condense water vapor contained in the generated hydrogen; and a temperature increasing portion configured to increase a temperature of the generated hydrogen between the condenser and the blower.

WATER ELECTROLYSIS SYSTEM

Resumen de: WO2025169719A1

This water electrolysis system comprises: a water electrolysis cell stack; a water separator that is connected to the water electrolysis cell stack and separates water discharged from the water electrolysis cell stack from gas; a water circulation path that is provided with a water circulation pump and circulates the water separated by the water separator; a water supply path that is separate from the water circulation path, is provided with a water supply pump, and supplies the water to the water electrolysis cell stack; an ion exchange resin provided in the water circulation path; and a heat exchanger that is provided on the upstream side of the ion exchange resin in the water circulation path, and that cools the water in the water circulation path on the basis of the temperature of the water supplied from the water supply path to the water electrolysis cell stack.

COMPACT HYDROGEN ALKALINE ELECTROLYSER

Resumen de: WO2025168858A1

The present invention relates to a high-efficiency hydrogen electrolyser consisting of a single casing containing four inner cavities having identical cubic capacity which are intercommunicated at the top to share a common gas outlet and which may also be intercommunicated at mid-height to share filler material. At the bottom of each cavity there is a solid bar longitudinally arranged such that the upper bar serves as a cathode and the lower bar serves as an anode, resulting in the optimisation of the electrolysis system by adding acidified water and providing DC power supply.

METHOD FOR CONSTRUCTING NITROGEN-DOPED BIMETALLIC NANOFIBER MEMBRANE ELECTROCATALYST ON BASIS OF ELECTROSTATIC SPINNING METHOD AND USE OF NITROGEN-DOPED BIMETALLIC NANOFIBER MEMBRANE ELECTROCATALYST

Resumen de: WO2025166879A1

The present invention belongs to the technical field of OER electrocatalysts. Provided are a method for constructing a nitrogen-doped bimetallic nanofiber membrane electrocatalyst on the basis of an electrostatic spinning method and the use of the nitrogen-doped bimetallic nanofiber membrane electrocatalyst. The electrocatalyst is prepared from a mixed high-molecular polymer of a metal salt, N,N-dimethylformamide and polyacrylonitrile by means of the coordinated and confined pyrolysis transformation of a one-dimensional porous carbon nanomaterial. The method comprises: S1, preparing a FeCo-NCNF precursor solution; S2, transferring the resulting FeCo-NCNF precursor solution into a plastic injector with a stainless steel needle to perform electrostatic spinning, so as to obtain a nanofiber membrane; and S3, subjecting the obtained nanofiber membrane to high-temperature carbonization and phosphorization in sequence, so as to obtain a nitrogen-doped bimetallic nanofiber membrane electrocatalyst. In the present invention, the nitrogen-doped bimetallic nanofiber membrane electrocatalyst prepared by using the method has the advantages of a large specific surface area, a porous structure, a high nitrogen content, a great number of active sites, etc., and therefore the catalytic performance of the electrocatalyst is improved.

ELECTROLYSIS SYSTEM COMPRISING AN ELECTROLYSIS PLANT AND A RENEWABLE ENERGY PLANT AND METHOD FOR CONTROLLING AN ELECTROLYSIS SYSTEM

Resumen de: AU2024301470A1

The present invention relates to an electrolysis system (100) comprising a renewable power generation plant (1), an electrolysis plant (3), a transformer station (27) and an AC bus bar (5), wherein the renewable power generation plant (1) is connected to the public electricity grid at a point of connection (POC) via the AC bus bar (5) and comprises a power plant controller (7) and a self-controlled converter (9) that is connected to the AC bus bar (5). The electrolysis plant (3) comprises an electrolysis active power controller (11) and a converter arrangement (13) that is connected to the AC bus bar (5), and wherein the electrolysis active power controller (11) is configured for controlling active power (P) of the electrolysis plant (3) at the AC bus bar (5) and the power plant controller (7) is configured for controlling reactive power (Q) at the point of connection (POC).

Process For the Production of Methanol and Hydrogen from Methane Using a Solid Metal Hydroxide Reagent

Resumen de: US2025257022A1

The present invention relates to a process for producing methanol (MeOH) and hydrogen (H2) from methane, comprising the steps: a) providing a gaseous feed stream comprising methane; b) reacting said gaseous feed stream with at least one halogen reactant (X2), under reaction conditions effective to produce an effluent stream comprising methyl halide (MeX), hydrogen halide (HX); c) separating from the effluent stream obtained in step b): (i) a methyl halide (MeX) stream, optionally comprising unreacted methane; and, (ii) a hydrogen halide (HX) stream; d) reacting the methyl halide (MeX) stream separated in step c) with a solid metal hydroxide (MOH(s)) under reaction conditions effective to produce metal halide (MX) and methanol (MeOH); and, e) decomposing by means of electrolysis said hydrogen halide (HX) stream separated in step c) under conditions effective to produce a gaseous hydrogen (H2) stream and a stream comprising halogen reactant (X2).

WATER ELECTROLYSIS SYSTEM

Resumen de: US2025257489A1

A water electrolysis system includes: a water electrolysis stack that generates oxygen gas and hydrogen gas by electrolyzing water; a gas-liquid separator that separates the hydrogen gas from water; a hydrogen compression stack that compresses the hydrogen gas; a gas tank that stores an inert gas and is connected to a hydrogen flow path that connects the water electrolysis stack and the hydrogen compression stack; a supply valve that, when opened, supplies the inert gas to the hydrogen flow path; and a supply control unit that opens the supply valve in a case where the concentration of the oxygen gas that has flowed into the hydrogen flow path exceeds an oxygen concentration threshold determined in advance.

Method of Producing H2 And/Or BR2 by Electrolysing HBr Using Fluoropolymer Membranes

Resumen de: US2025257487A1

A method of producing hydrogen and/or bromine by electrolysing hydrogen bromide using a fluoropolymer membrane having a glass transition temperature Tg≥110° C. in an electrolysis of hydrogen bromide, wherein the hydrogen bromide stems from a bromination of a hydrocarbon.

METHOD FOR OPERATING AN ELECTROLYSIS SYSTEM, AND ELECTROLYSIS SYSTEM

Resumen de: US2025257488A1

An electrolysis system includes at least one electrolyzer for generating hydrogen and oxygen as products, and at least two downstream compressors for compressing at least one of the products produced in the electrolyzer. A method of operating the electrolysis system in a part-load operation of the electrolyzer that is optimized in terms of efficiency and is also cost-effective. During the part load operation of the electrolyzer, a first group of compressors is operated in part-load operation, while the compressor(s) of a second group can be switched on or off individually for full-load operation.

AN ELECTRODE FOR OXYGEN GENERATION

Resumen de: US2025257484A1

An electrode suitable for carrying out oxygen evolution reaction in the electrolysis of water in alkaline conditions. The electrode includes a ceramic material having a stability factor (SF) between 1.67≤SF≤2.8 and which is calculated by formula (II), where rO is the ionic radius of oxide ion (O2−), rB,av is the weighted average ionic radius of a transition metal, nA,Av is the weighted average oxidation state of a rare earth or alkaline earth metal, rA,av is the weighted average ionic radius of a rare earth or alkaline earth metal. An alkaline electrolysis stack includes the electrode, as well as a method for the electrolysis of water in alkaline conditions using the alkaline electrolysis stack.

HYDROGEN-RICH BLAST FURNACE IRONMAKING SYSTEM BASED ONMASS-ENERGY CONVERSION, AND PRODUCTION CONTROL METHOD THEREFOR

Resumen de: US2025257415A1

A hydrogen-rich blast furnace ironmaking system based on mass-energy conversion, comprising a water electrolysis system (2). The water electrolysis system (2) is separately connected to a hydrogen storage tank (3) and an oxygen storage tank (4); a gas outlet of the hydrogen storage tank (3) is connected to a hydrogen compressor (5); an outlet of the hydrogen compressor (5) is connected to a hydrogen buffer tank (6); the hydrogen buffer tank (6) is connected to a hydrogen injection valve group (7); the hydrogen injection valve group (7) is connected to a hydrogen preheating system (8); and the hydrogen preheating system (8) is connected to a tuyere of a blast furnace body (1) or a hydrogen injector at the lower portion of the furnace body.

Biological and Chemical Process Utilizing Chemoautotrophic Microorganisms for the Chemosynthetic Fixation of Carbon Dioxide and/or Other Inorganic Carbon Sources into Organic Compounds and the Generation of Additional Useful Products

Resumen de: US2025257374A1

The invention described herein presents compositions and methods for a multistep biological and chemical process for the capture and conversion of carbon dioxide and/or other forms of inorganic carbon into organic chemicals including biofuels or other useful industrial, chemical, pharmaceutical, or biomass products. One or more process steps utilizes chemoautotrophic microorganisms to fix inorganic carbon into organic compounds through chemosynthesis. An additional feature described are process steps whereby electron donors used for the chemosynthetic fixation of carbon are generated by chemical or electrochemical means, or are produced from inorganic or waste sources. An additional feature described are process steps for recovery of useful chemicals produced by the carbon dioxide capture and conversion process, both from chemosynthetic reaction steps, as well as from non-biological reaction steps.

PURGE GAS CONDITIONING OF NH3 PLANTS

Resumen de: US2025256975A1

Embodiments of the disclosure pertain to the conditioning of the purge gas stream in an NH3 synthesis plant comprising a water electrolysis unit to produce a H2 stream, ammonia synthesis loop, and a treatment section for treating purge gas at 10-70 bar(a) using scrubbing and membrane separation.

MANUFACUTRING METHOD OF POROUS CARBON COMPOSITE WATER ELECTROLYSIS ELECTRODE AND POROUS CARBON COMPOSITE WATER ELECTROLYSIS ELECTRODE MANUFACTURED THEREBY

Resumen de: KR20250122796A

본 발명은 다공성 탄소 복합 수전해 전극 제조 방법 및 이에 의해 제조된 다공성 탄소 복합 수전해 전극에 관한 것이다. 본 발명은 (1) 탄소 섬유 또는 활성 탄소 섬유를 분산제 및 수지와 혼합하고, 열처리를 통해 다공성 탄소 섬유 전극 지지체를 제조하는 단계; (2) 산소를 포함하는 관능기 및 질소를 포함하는 관능기에 의해 표면 개질된 다중벽 탄소나노튜브, 수전해 반응 촉진 물질이 코팅된 탄소 복합 촉매 입자 및 바인더 수지가 혼합된 코팅액을 제조하는 단계; (3) 상기 다공성 탄소 섬유 전극 지지체를 상기 코팅액에 함침 및 열 건조하고, 가압 및 가열 처리하여, 상기 산소를 포함하는 관능기 및 질소를 포함하는 관능기에 의해 표면 개질된 다중벽 탄소나노튜브 및 수전해 반응 촉진 물질이 코팅된 탄소 복합 촉매 입자가 상기 다공성 탄소 섬유 전극 지지체의 표면과 연결되어 3차원 다공성 전극 네트워크를 형성하는 단계;를 포함하는, 다공성 탄소 복합 수전해 전극 제조 방법을 제공한다.

수전해용 개선된 다층 양성자 교환 막

Resumen de: WO2024126749A1

There is provided a multi-layered proton exchange membrane for water electrolysis, comprising: at least two recombination catalyst layers, each of the at least two recombination catalyst layers comprising a recombination catalyst and a first ion exchange material, wherein at least two recombination catalyst layers are separated by a region devoid of or substantially devoid of a recombination catalyst, and at least two reinforcing layers, each of the at least two reinforcing layers comprising a microporous polymer structure and a second ion exchange material which is at least partially imbibed within the microporous polymer structure.

- Pt-CNT composite for hydrogen evolution reaction electrode

Resumen de: KR20250122697A

본 발명에 의한 수소발생 촉매 전극용 백금-탄소나노튜브 복합체는 탄소나노튜브 표면에 백금이 도입되며, 백금 함량이 20 중량% 이하인 것을 특징으로 한다.

METHOD FOR OPERATING AN ELECTROLYSIS PLANT, AND ELECTROLYSIS PLANT

Resumen de: US2025257475A1

The invention relates to a method for operating an electrolysis plant which has an electrolyzer for generating hydrogen and oxygen as product gases, wherein water is fed as educt water to the electrolyzer and split into hydrogen and oxygen at an ion-exchange membrane. Prior to splitting, the educt water is brought into a thermodynamic state close to the boiling point of the water in terms of the pressure and temperature and is fed in this state to the membrane. Educt water is brought to a boil at the membrane and converted into the gas phase, wherein the water in the gas phase is split at the membrane. There is also described an electrolysis plant having an electrolyzer for generating hydrogen and oxygen as product gases.

DETERMINATION METHOD, QUALITY ASSURANCE METHOD, ELECTROLYSIS DEVICE, AND ELECTROLYSIS METHOD

Resumen de: US2025259714A1

A determination method determines whether or not target molecules including elemental hydrogen are electrolytic hydrogen-containing molecules which include: hydrogen molecules produced by water electrolysis; or molecules produced using the hydrogen molecules as a raw material. In the determination method, the method includes determining that the target molecules are the electrolytic hydrogen-containing molecules when an abundance ratio of deuterium to light hydrogen in the target molecules is less than or equal to a predetermined threshold which is smaller than an abundance ratio of deuterium to light hydrogen in nature.

PRODUCTION OF HYDROGEN USING METHANOL

Resumen de: WO2025169081A1

PRODUCTION OF HYDROGEN USING METHANOL The present disclosure relates generally to processes for producing hydrogen. In particular, the disclosure relates to a process comprising: providing a first feed stream comprising H2 and CO2; contacting the first feed stream with a hydrogenation catalyst (e.g., in a hydrogenation reaction zone) to hydrogenate at least a portion of the CO2 to form a first product stream comprising methanol; storing at least a portion of the methanol of the first product stream; providing a second feed stream comprising at least a portion of the stored methanol; in a methanol dehydrogenation reaction zone, dehydrogenating at least a portion of the methanol of the second feed stream to form a second product stream comprising H2 and CO2; providing a third feed stream comprising at least a portion of H2 of the second product stream; in a hydrogen reaction zone, reacting hydrogen of the third feed stream with one or more co-reactants to provide a third product stream comprising one or more products including reacted hydrogen atoms from hydrogen of the third feed stream.

ELECTROCHEMICAL HYDROGEN PRODUCTION VIA AMMONIA CRACKING

Resumen de: WO2024129246A1

Herein discussed is a method of producing hydrogen comprising: (a) providing an electrochemical reactor having an anode, a cathode, and a membrane between the anode and the cathode, wherein the membrane conducts both electrons and protons, wherein the anode and cathode are porous; (b) introducing a first stream to the anode, wherein the first stream comprises ammonia or a cracked ammonia product; and (c) extracting a second stream from the cathode, wherein the second stream comprises hydrogen, wherein the first stream and the second stream are separated by the membrane.

ELECTROCHEMICAL CO-PRODUCTION OF HYDROGEN AND CARBON MONOXIDE

Resumen de: WO2024112460A1

Herein discussed is a method of co-producing carbon monoxide and hydrogen comprising: (a) providing an electrochemical reactor having an anode, a cathode, and a mixed-conducting membrane between the anode and the cathode; (b) introducing a first stream to the anode, wherein the first stream comprises a fuel; (c) introducing a second stream to the cathode, wherein the second stream comprises carbon dioxide and water, wherein carbon monoxide is generated from carbon dioxide electrochemically and hydrogen is generated from water electrochemically. In an embodiment, the anode and the cathode are separated by the membrane and are both exposed to reducing environments during the entire time of operation.

CROSSLINKED COPOLYMER, POLYMER MEMBRANE COMPRISING SAME, AND ANION EXCHANGE MEMBRANE COMPRISING SAME POLYMER MEMBRANE

Resumen de: EP4600283A1

The subject disclosure relates to a crosslinked copolymer that has outstanding ion exchange capacity, exhibits high ion conductivity and water content under diverse temperature conditions, and features high density, low hydrogen permeability, and excellent thermal and oxidative stability, making it well-suited as an anion exchange membrane for water electrolysis to produce high-purity hydrogen and oxygen

AMMONIA CRACKER

Resumen de: WO2024074817A1

An ammonia cracker module for converting ammonia into hydrogen is provided. The ammonia cracker module includes: (i) a heat exchange reactor including: (a) a first reaction zone including: a first working fluid flowpath; a first reactant flowpath; and one or more heat exchange interfaces positioned between the first working fluid flowpath and first reactant flowpath; (b) a second reaction zone including: a second working fluid flowpath; a second reactant flowpath; and one or more heat exchange interfaces positioned between the second working fluid flowpath and second reactant flowpath; (c) a catalyst positioned to contact reactant fluid flowing through the first and second reactant flowpaths to convert ammonia flowing through the first and second reactant flowpaths into hydrogen; and (ii) a heating system including: a first heat source, configured to heat working fluid to create a first heated working fluid to enter the first working fluid flowpath; and a second heat source, configured to receive a first thermally depleted working fluid from the first working fluid flowpath and output a second heated working fluid to the second working fluid flowpath when the cracker module is in use. A method of producing hydrogen using an ammonia cracker is also provided.

SULFUR DIOXIDE DEPOLARIZED ELECTROLYSIS AND ELECTROLYZER THEREFORE

Nº publicación: EP4599114A1 13/08/2025

Solicitante:

PEREGRINE HYDROGEN INC [US]
Peregrine Hydrogen Inc

Resumen de: WO2024076575A1

A method can include: processing precursors, electrochemically oxidizing sulfur dioxide, processing sulfuric acid and hydrogen, and/or any suitable steps. An electrolyzer can include an anode, a cathode, and a separator. The anode can include an anolyte, an electrode, an anolyte reaction region, and/or any suitable components. The cathode can include a catholyte, an electrode, a catholyte reaction region, and/or any suitable components.