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水電解システム

Resumen de: US2025333854A1

A water electrolysis system that generates hydrogen and oxygen by electrolysis of water includes a water electrolysis cell including an anode, a cathode, and an electrolyte membrane sandwiched between the anode and the cathode, and a control device that controls electric power supplied to the water electrolysis cell, wherein the control device performs a potential changing process of changing a potential of the anode either or both of upon starting of the water electrolysis system and during continuous operation of the water electrolysis system, and the potential changing process includes a potential lowering process of lowering the potential of the anode to a predetermined potential.

水電解システム、水供給システム、および水供給方法

Resumen de: JP2025167806A

【課題】水素の生成効率を向上させた上で、水電解装置の劣化を抑制する。【解決手段】水電解システムは、水の電気分解を行う水電解部と、水電解部に供給される水を貯蔵するタンクと、タンクに水を供給する供給部と、タンクに貯蔵された水量を取得する水量取得部と、タンクに貯蔵された水の温度を取得する温度取得部と、タンクに貯蔵された水量と水の温度に応じて、供給部からタンクに供給される水量を制御する制御部と、を備え、制御部は、タンク内の水量が第１水量未満の場合に、タンク内の水量が第１水量よりも多い第２水量になるまで供給部から水を供給し、タンク内の水量が第１水量以上、かつ、タンク内の水の温度が基準温度よりも高い場合に、タンク内の水量が第２水量よりも多い第３水量になるまで供給部から水を供給する。【選択図】図１

副生成物の部分オキシ燃料燃焼およびＣＯ２の分離によるＣＯ２からの合成燃料の製造

Resumen de: CN120239739A

The invention relates to a device/method for capturing/converting CO2. The invention relates to a process for the production of CO and water, comprising/using a CO2 capture unit (2) that produces CO2 (3), a water electrolysis unit (5) that converts water (4) into oxygen (6) and hydrogen (7), an RWGS unit (8) that treats CO2 with hydrogen (7) and produces an RWGS gas (9) enriched in CO and water, an FT unit (13) that converts the RWGS gas and produces an FT effluent (14), a first separation unit (15) that treats the FT effluent and produces a hydrocarbon effluent (17) and a gas effluent (33), a second separation unit (34) separating the effluent gas into a CO2-lean gas (18) and a CO2-rich gas (35) fed to the RWGS unit, a partial oxycombustion unit (28) oxidizing the CO2-lean gas and producing CO fed to the FT unit, a hydrogen unit (20) treating the hydrocarbon effluent to produce a hydrocarbon fraction (21).

Plattenanordnung, Elektrolyseur und Verfahren zur Herstellung einer Plattenanordnung

Resumen de: DE102024112692A1

Eine Plattenanordnung (1) eines Stapels elektrochemischer Zellen (2) umfasst ein zumindest teilweise als 3D-Druck-Element ausgebildetes Plattenelement (3), in welchem mehrere Schichten (6, 7, 8) parallel zueinander angeordnet sind, die jeweils durchbrochene, zur Durchleitung eines Fluids geeignete Strukturen aufweisen, wobei die Feinheit der Durchbrechungen (17) von Schicht (6, 7, 8) zu Schicht (6, 7, 8) variiert, und wobei ein Temperatursensor (19), der an ein Kabel (20) angeschlossen ist, welches durch mehrere der genannten Schichten (6, 7, 8) verläuft, an diejenige Schicht (8) grenzt, welche die feinsten Durchbrechungen (17) aufweist.

- RUTHENIUM-NICKEL FOAM COMPOSITE CATALYST METHOD OF MANUFACTURING SAME AND HYDROGEN EXTRACTION SYSTEM USING SAME

Resumen de: WO2025230390A1

A ruthenium-nickel foam catalyst composite, a preparation method therefor, and a hydrogen extraction system (10) using same are disclosed. Specifically, provided is the method for preparing a catalyst composite used for ammonia decomposition, comprising the steps of: (a) making a porous support, which is in the form of a three-dimensional structure having pores and includes a first metal, come into contact with an acidic aqueous solution so as to pretreat the porous support; (b) preparing a second metal precursor aqueous solution comprising water and a second metal precursor that includes a second metal; and (c) using the pretreated porous support and the second metal precursor aqueous solution so as to support a catalyst including the second metal on a part or all of the surface of the porous support, thereby preparing a catalyst composite. The present invention provides a low-loading noble metal catalyst by maximizing the utilization of supported noble metals through selective adsorption of Ru metal.

水電解装置

Resumen de: JP2025166457A

【課題】水の電気分解において、反応が進行する場所は電極表面の気体と液体の界面－すなわち固体、気体、液体の三相の界面の極めて限られた領域で反応が進む。つまり反応が進行する場所は電極表面の気体と液体の界面の狭い範囲に限定される。この狭い反応領域の一点に水の二分子もしくは水酸基の４分子が同時に接触しなければ水素分子もしくは酸素分子は発生せず極めて限定された反応機構となる。【解決手段】負極と正極と中間電極を有し、負極と正極との間に中間電極を配した少なくとも２組の電極群において、一方の電極群の負極と他方の電極群の正極との間に中間電極が配された水電解装置とすることにより反応面が線から面に広がり効率の良い水電解が可能となる。【選択図】図１Ａ

水電解装置

Resumen de: JP2025166415A

【課題】浄水器の劣化をおさえながら、水電解用の水を冷却および浄化し、十分な量を水電解セルに供給すること。【解決手段】水電解装置１は、水電解反応により水素および酸素を生成する水電解セルと、前記水電解セルで使用された水を貯蔵する水タンクと、前記水タンクに接続され前記水タンクから供給された水を冷却する熱交換器と、前記熱交換器に接続され前記熱交換器で冷却された水を浄化する浄水器と、前記水タンクから供給された水が前記熱交換器および前記浄水器を介して前記水電解セルに流れる第１流路９２と、前記水タンクから供給された水が前記熱交換器および前記浄水器を介さずに直接前記水電解セルに流れる第２流路９３と、前記水電解セルから前記水タンクに水が流れる第３流路と、を備える。【選択図】図１

二酸化炭素の回収方法、二酸化炭素回収システム

Resumen de: JP2025166373A

【課題】水の電気分解を利用した二酸化炭素の回収方法であって、回収を確実に見込める方法を提供すること。【解決手段】本発明の回収方法は、水を電気分解した電解装置の陰極室３２Ｂから取り出したアルカリ性の陰極側電解液３５Ｂを、二酸化炭素を含む気体で曝気する曝気工程と、曝気した陰極側電解液３５Ｂを酸性にする酸性化工程と、酸性にした陰極側電解液３５Ｂを加熱して、気体で放出された二酸化炭素を回収する二酸化炭素回収工程とを有する。各工程において陰極側電解液３５Ｂに対する二酸化炭素の溶解と放出を制御することで、二酸化炭素を効率的に回収することができる。【選択図】図１

AN AMMONIA ELECTROLYSIS CELL

Resumen de: WO2025230473A1

The present disclosure relates broadly to ammonia electrochemical cells. The ammonia electrolysis cell may comprise: a chamber for containing an electrolyte; two electrodes disposed within the chamber; and an anion exchange membrane disposed between the electrodes, wherein each electrode comprises a bifunctional catalyst having ammonia oxidation reaction activity and hydrogen evolution reaction activity, and wherein each electrode is capable of alternating in polarity when subjected to an alternating potential. There is also disclosed herein a method of operating an ammonia electrolysis cell as well as the use of an ammonia electrolysis cell to produce hydrogen from ammonia.

WATER ELECTROLYZER

Resumen de: WO2025231331A1

A direct impure water electrolysis (DIWE) approach generates green hydrogen in a modified proton-exchange membrane pure water electrolyzer (PEM-PWE), that avoids fouling, corrosion, deactivation, and side reactions normally caused by the ions in impure or saline waters. Conventional electrolyzers require ultrapure deionized (DI) water as feed because: 1) the proton-exchange membrane (PEM) and electrocatalysts are readily poisoned by the anions, e.g., chloride, and cations, e.g., sodium, calcium, and magnesium that are present in seawater or brackish water; and 2) the chloride anions readily form chlorine at the PEM-electrolyzer anode, which is toxic and corrosive. This adds substantially to the cost and complexity of the electrolyzer plant due to the water treatment plant needed for producing ultrapure DI water. The tolerance of impure water as described herein avoids reverse osmosis and deionization requirements steps which is beneficial for use in semi-arid regions with a paucity of fresh water.

CONTAINED HYDROGEN GENERATION SYSTEM

Resumen de: WO2025231104A1

A contained hydrogen generation system ("system") comprises a high-pressure containment vessel ("vessel"), one or more proton-exchange membrane ("PEM") cells, an oxygen-water separator, and a passive dual regulator with relative differential venting ("regulator"). The vessel defines a hydrogen plenum. The PEM and the oxygen-water separator are disposed in the hydrogen plenum. The regulator includes a hydrogen fluid path in fluid communication with the hydrogen plenum, an exterior hydrogen storage vessel, and an exterior of the vessel, and also includes an oxygen fluid path in fluid communication with the oxygen-water separator, an exterior oxygen storage vessel, and an exterior of the vessel. The regulator regulates pressure imbalances between an oxygen-side of the system and a hydrogen-side of the system, and vents oxygen and hydrogen to an exterior of the vessel to allow collection of both hydrogen and oxygen and avoid rupture of a PEM in the one or more PEM cells.

RUTHENIUM-NICKEL FOAM CATALYST COMPOSITE, PREPARATION METHOD THEREFOR, AND HYDROGEN EXTRACTION SYSTEM USING SAME

Resumen de: WO2025230390A1

A ruthenium-nickel foam catalyst composite, a preparation method therefor, and a hydrogen extraction system (10) using same are disclosed. Specifically, provided is the method for preparing a catalyst composite used for ammonia decomposition, comprising the steps of: (a) making a porous support, which is in the form of a three-dimensional structure having pores and includes a first metal, come into contact with an acidic aqueous solution so as to pretreat the porous support; (b) preparing a second metal precursor aqueous solution comprising water and a second metal precursor that includes a second metal; and (c) using the pretreated porous support and the second metal precursor aqueous solution so as to support a catalyst including the second metal on a part or all of the surface of the porous support, thereby preparing a catalyst composite. The present invention provides a low-loading noble metal catalyst by maximizing the utilization of supported noble metals through selective adsorption of Ru metal.

DECOUPLING TYPE ELECTROCHEMICAL CARBON DIOXIDE CAPTURE SYSTEM

Resumen de: WO2025227539A1

The present invention belongs to the technical field of carbon dioxide capture. Provided is a decoupling type electrochemical carbon dioxide capture system. The system comprises an electrolysis reactor, a carbon dioxide absorption tower and a carbon dioxide desorption tower. The system can achieve the electrochemical capture and purification of ultralow-concentration carbon dioxide in an oxygen-containing carbon dioxide environment. In practical use, an external power supply can be used for supplying power to the system, and the pH environments of a solution at a cathode and an anode are changed by means of an electrochemical PCET reaction to promote the enrichment of OH- in a cathode region and the enrichment of H+ in an anode region, thereby achieving the absorption of ultralow-concentration carbon dioxide and the release of high-purity carbon dioxide; and an anode liquid is reduced and regenerated outside the system by means of hydrogen generated by the cathode, thereby achieving low-energy-consumption continuous stable carbon dioxide capture and purification.

PROCESS FOR SPLITTING WATER

Resumen de: WO2025227188A1

Described herein is a process for splitting water into molecular hydrogen (H2) and oxygen (O2), comprising: contacting water molecules with a catalyst, wherein the catalyst or at least portion thereof in contact with the water molecules is irradiated with microwave radiation, and wherein the catalyst comprises a compound of a metal (M) and at least one Lewis acidic element (X) different to the metal, whereby on contact, the water molecules split to form molecular hydrogen (H2) and oxygen (O2).

AMMONIA DECOMPOSITION OVER MEDIUM ENTROPY METAL ALLOY CATALYSTS

Resumen de: WO2025231009A2

A method of catalytic ammonia decomposition is provided. The method includes: flowing ammonia into a reactor charged with a medium entropy metal alloy (MEA) catalyst including a first principal metal, a second principal metal, and a third principal metal, where each of the principal metals is independently selected without repetition from the group consisting of Co, Cr, Fe, Mn, Ni, Al, Cu, Zn, Ti, Zr, Mo, V, Ru, Rh, Pd, Ag, W, Re, Ir, Pt, Au, Ce, Y, Yb, Sn, Ga, In, and Be; and catalytically decomposing the ammonia into hydrogen and nitrogen over the MEA catalyst in the reactor at a reaction temperature between 200 °C and 900 °C.

REFORMER INTEGRATED GASIFICATION TECHNOLOGY (RIG)

Resumen de: WO2025229398A1

There is described a hydrogen production system comprising: a gasification sub-system to produce a syngas stream from a biomass and/or refuse derived fuel feed stream; and a steam methane reformer (SMR) sub-system to produce an SMR syngas stream from a hydrocarbon feed, and to produce a low carbon hydrogen final product by integrating the syngas stream from the gasification sub-system and the SMR syngas stream.

HIGH PRESSURE GASKET FOR AN ELECTROLYSIS DEVICE

Resumen de: WO2025230800A1

The electrolysis device includes a plurality of plates that have a plurality of sets of aligned fluid openings. At least one of the sets of aligned fluid openings is configured for conveying high pressure hydrogen gas. At least one gasket, which has an annular shape and is made of an elastomeric material, surrounds at least one of the sets of aligned fluid openings to establish a fluid-tight seal between at least two of the plurality of plates. The at least one gasket has a generally constant cross-sectional shape around a central axis, the cross-sectional shape having a sealing surface that includes a pair of peaks that are spaced radially apart from one another and that includes a pair of elevated plateaus on opposite radial sides of the pair of peaks.

AMMONIA DECOMPOSITION OVER SUPPORTED MEDIUM ENTROPY METAL ALLOY CATALYSTS

Resumen de: WO2025230786A1

A method of catalytic ammonia decomposition, where the method includes: flowing ammonia into a reactor charged with a supported medium entropy metal alloy (MEA) catalyst including MEA particles supported on a support, the MEA particles including a first principal metal, a second principal metal, and a third principal metal, where each of the principal metals is independently selected without repetition from the group consisting of Co, Cr, Fe, Mn, Ni, Al, Cu, Zn, Ti, Zr, Mo, V, Ru, Rh, Pd, Ag, W, Re, Ir, Pt, Au, Ce, Y, Yb, Sn, Ga, In, and Be; and catalytically decomposing the ammonia into hydrogen and nitrogen over the supported MEA catalyst in the reactor at a reaction temperature between 200 °C and 900 °C.

METHOD FOR OPERATING AN ELECTROCHEMICAL SYSTEM, COMPUTING UNIT

Resumen de: WO2025228738A1

The invention relates to a method for operating at least one electrochemical system (1), for example an electrolysis system for producing hydrogen, wherein software is used during operation of the electrochemical system (1), which software is at least once updated or replaced by subsequent software, and wherein the updated software or the subsequent software is tested and/or validated at least in parts. According to the invention, (a) a virtual operating environment is generated by means of a simulation, which virtual operating environment reproduces an actual operating state using real operating data, (b) the updated software or subsequent software is executed within the virtual operating environment, and (c) the updated software or subsequent software is tested and/or validated on the basis of the actual operating state in parallel with ongoing operation. The invention also relates to a computing unit (4) which is designed to carry out steps of a method according to the invention.

A POROUS TRANSPORT LAYER WITH A SUBSTANTIALLY FLAT SURFACE AND METHOD FOR PRODUCING THE SAME

Resumen de: WO2025228586A1

A porous transport layer, PTL, (200) for a water electrolyzer (100). The porous transport layer comprises a porous layer (210), where the porous layer (210) is a porous structure comprising irregular pores (212) and solid sections (213). At least a first surface (211) of the porous layer (210) is formed by a first plurality of solid sections (213). At least some of the solid sections (213) in the first plurality have at least one surface that is substantially flat and arranged facing outwards from the porous layer such that it forms part of the first surface (211).

STORAGE AND REUSE OF HYDROGEN AND OXYGEN PRODUCED BY GREEN ENERGY IN GROUNDWATER

Resumen de: US2025341280A1

The storage apparatus according to the invention, a geo hydrogen storage system, is a system consisting of a plurality of groundwater wells drilled into the ground. Hydrogen is produced by electrolysis using green energy. The hydrogen and the associated oxygen are stored in and recovered from cartridges installed in said wells being flooded by the groundwater and located at appropriate distances from each other. The system uses closed-circuit circulating water to transport the gases generated in electrolysis in the form of bubbles. The gases are separated from the circulating water by volume expansion and form gas bubbles when they reach the corresponding cartridge. This gas bubble will, with continued operation, squeeze larger and larger volume of water from the groundwater in the cartridge, thereby pressurizing the system.

GREEN HYDROGEN FROM SEAWATER

Resumen de: US2025341001A1

An electrode configuration and system useful for performing electrolysis, including one or more pairs of non-planar electrodes each comprising a first electrode having a first base and a second electrode comprising a second base. A mount can be used to mount the first electrode and the second electrode in each of the pairs with a spacing between the first base and the second base, so that an electric current may flow through a fluid between the first base and the second base to drive an electrochemical reaction of the fluid. A surface area of the bases (the base of the first electrode and the base of the second electrode) exposed to the fluid are dimensioned to support a current density of the electric current of at least 10 A/cm2 or in a range of 10 A/cm2 and 14 A/cm2. An electrolysis system including the electrodes can be used for the electrolysis of seawater to produce hydrogen at higher rates and with reduced chlorine evolution.

POWER SYSTEM, CONTROL DEVICE, AND CONTROL METHOD

Resumen de: AU2024244811A1

Provided is a configuration capable of improving the operation rate of a hydrogen production device for producing hydrogen using power supplied from multiple power sources using different renewable energies. A power system 1 according to one embodiment of the present disclosure comprises: a hydrogen production device 41 that produces hydrogen using power supplied from different types of renewable energy generators 21, 31; and an information processing device 71 that causes power to be supplied to the hydrogen production device 41 from a renewable energy generator, the output of which is reduced, from among the renewable energy generators 21, 31.

WATER ELECTROLYZER

Resumen de: US2025341002A1

A direct impure water electrolysis (DIWE) approach generates green hydrogen in a modified proton-exchange membrane pure water electrolyzer (PEM-PWE), that avoids fouling, corrosion, deactivation, and side reactions normally caused by the ions in impure or saline waters. Conventional electrolyzers require ultrapure deionized (DI) water as feed because: 1) the proton-exchange membrane (PEM) and electrocatalysts are readily poisoned by the anions, e.g., chloride, and cations, e.g., sodium, calcium, and magnesium that are present in seawater or brackish water; and 2) the chloride anions readily form chlorine at the PEM-electrolyzer anode, which is toxic and corrosive. This adds substantially to the cost and complexity of the electrolyzer plant due to the water treatment plant needed for producing ultrapure DI water. The tolerance of impure water as described herein avoids reverse osmosis and deionization requirements steps which is beneficial for use in semi-arid regions with a paucity of fresh water.

CONVERSION OF CARBON DIOXIDE AND WATER TO SYNTHESIS GAS

Nº publicación: US2025340500A1 06/11/2025

Solicitante:

TOPSOE AS [DK]
Topsoe A/S

Resumen de: US2025340500A1

The invention relates to a method for producing methanol via a synthesis gas produced by combining electrolysis of a water feedstock for producing a stream comprising hydrogen, and electrolysis of carbon dioxide rich stream for producing a stream comprising CO and CO2 in which the synthesis gas has a molar ratio CO/CO2 greater than 2. The invention relates also to a method for producing a synthesis gas by once-through co-electrolysis in a SOEC unit of a feed gas stream combining CO2 and steam.