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438
results.
Updated on
14/08/2025 [07:00:00]
Results 250 to 275 of 438
Absstract of: WO2025135428A1
The present technology relates to a water electrolysis system having a power supply control function capable of protecting a water electrolysis stack from instability of renewable energy power. The water electrolysis system comprises: a renewable energy production device for producing renewable energy; a renewable energy storage device for storing the produced renewable energy; a water electrolysis device for electrolyzing water by using at least one of the renewable energy and stored energy supplied from the renewable energy storage device; a gas storage device for storing gas produced by electrolysis in the water electrolysis device; and a power supply control device which controls power supply to the water electrolysis device so as to, if a gradient of power change of the renewable energy is greater than a preset power increase reference gradient, charge the renewable energy storage device by distributing at least a portion of the renewable energy, and if the gradient of power change of the renewable energy is less than a preset power decrease reference gradient, supplement the renewable energy by distributing at least a portion of the stored energy of the renewable energy storage device.
Absstract of: US2025207279A1
A method for operating an electrolysis device, having a converter which is connected on an AC voltage side to an AC voltage grid via a decoupling inductance and draws an AC active power from the AC voltage grid, and an electrolyzer, which is connected to the converter on the DC voltage side, is provided. The method includes operating the electrolysis device, when a grid frequency corresponds to a nominal frequency of the ACT voltage grid and is substantially constant over a time period, with an electrical power which is between 50% and 100% of a nominal power of the electrolyzer, and operating the converter in a voltage-impressing manner, such that an AC active power drawn from the AC voltage grid is changed on the basis of a change and/or a rate of change of the grid frequency in the AC voltage grid.
Absstract of: US2025207277A1
A catalytic material comprising at least one group VIB metal at least partly in sulfide form, at least one group IVB metal at least partly in sulfide form, and an electrically conductive support wherein said group VIB metal is chosen from molybdenum and/or tungsten, said group IVB metal is chosen from titanium, zirconium and/or hafnium.
Absstract of: US2025207274A1
An electrode for water electrolysis cell includes a conductive base, a first layer, and a second layer. The conductive base includes a transition metal. The first layer is disposed on the conductive base, and includes two or more transition metals and oxygen. The second layer is disposed on the first layer and includes a layered double hydroxide (LDH) including two or more transition metals. The first layer is disposed between the conductive base and the second layer in a thickness direction of the first layer. The first layer includes a first transition metal that is the same as the transition metal included in the conductive base, and a second transition metal that is the same as the transition metal included in the second layer and different from the first transition metal. The first transition metal exists in the first layer at a concentration higher than a concentration of the first transition metal in the second layer.
Absstract of: US2025207266A1
A water electrolysis cell has: an oxygen generating electrode; a hydrogen generating electrode; and a membrane, and electrolyzes water to generate oxygen on the oxygen generating electrode and generate hydrogen on the hydrogen generating electrode. A control device includes: a potential-maintaining mode where the water electrolysis cell is supplied with electric current; and a complete stop mode where the water electrolysis cell is shut out from electric current supply, each of the modes is optionally implemented during an operation stop, wherein which of the modes is implemented is determined based on a duration time of the operation stop, a first deterioration rate of the water electrolysis cell when the complete stop mode is implemented, and a second deterioration rate of the water electrolysis cell when the potential-maintaining mode is implemented.
Absstract of: WO2025129214A1
The invention relates to an electrolyser for alkaline hydrogen electrolysis, comprising: a direct voltage source, in particular a rectifier (1) having an electrical positive pole (2) and an electrical negative pole (3); media inlet lines (4) for an electrolysis medium; and media outlet lines (5) for product media; wherein a plurality of electrolysis blocks (6) which are connected in series via electrical connecting lines (9) are connected between the positive pole (2) and the negative pole (3), wherein the electrolysis blocks (6) each have a number of electrolysis cells (7) which are electrically connected in series and are mechanically clamped so that they are flush with one another, wherein the media inlet lines (4) and the media outlet lines (5) each extend serially through the electrolysis blocks (6) and are distributed within each individual electrolysis block (6) to individual cell inlet lines (4', 4") and individual cell outlet lines (5', 5") of the electrolysis cells (7).
Absstract of: US2025210678A1
An electrochemical cell module includes a module housing and electrochemical cells located in the module housing and configured to generate power or hydrogen and to output an exhaust. The module also includes a vent housing attached to the module housing, an exhaust duct located in the vent housing, and a filter cartridge located in the exhaust duct. The exhaust duct contains an inlet that is configured to receive the exhaust from the module housing, and an outlet that is configured to direct the exhaust away from the module housing. The filter cartridge contains a particulate filter.
Absstract of: AU2023383044A1
An electrolysis system 1 is provided with an electrolysis cell 2 and a mediator reduction tank 4. The electrolysis cell 2 comprises: an anode electrode 10 which electrochemically oxidizes a mediator reduction body M
Absstract of: WO2024133652A1
A corrugated heat transfer plate (5, 90, 92). It has opposing front and back sides (7, 9) and comprises a first end portion (11), a center portion (13) and a second end portion (15). It further comprises first and third portholes (17, 19) arranged within the first end portion (11), second and fourth portholes (27, 29) arranged within the second end portion (15), and a heat transfer area (4) comprising alternately arranged elongate ridges (6) and valleys (8) and being arranged within the center portion (13). An outer front field gasket groove (36) extends on the front side (7) and encloses the heat transfer area (4), while a back field sealing area (40) extends on the back side (9) and encloses the heat transfer area (4). The heat transfer plate (5, 90, 92) is characterized in that it further comprises a fifth porthole (21) arranged within the first end portion (11), a first transfer hole (25) arranged within a first half (h1) of the heat transfer plate (5, 90, 92), and a second transfer hole (35) arranged within a second half (h2) of the heat transfer plate (5, 90, 92). The first and second transfer holes (25, 35) are arranged within the outer front field gasket groove (36) and outside the back field sealing area (40). The first and second portholes (17, 27) are arranged within the back field sealing area (40), the third, fourth and fifth portholes (19, 29, 21) are arranged outside the back field sealing area (40), and the first, second, third, fourth and fifth portholes (17,
Absstract of: WO2025132855A1
A separator for alkaline water electrolysis comprising: - a porous support (100) and on at least one side of the support, in order: - an optional porous layer including a Polymer A (200), and - a non-porous layer including a Polymer B (300), characterized in that the separator is obtainable by coating on the porous support (100) or the optional porous layer (200) a Polymer B solution having a viscosity of at least 400 mPa.s, measured at 20°C and a shear rate of 100 s-1, and wherein the separator has a Bubble Point, measured according to ASTM F316, of at least 5 bar.
Absstract of: WO2025132806A1
A catalyst coated separator for alkaline water electrolysis (1) comprising a porous support (100) and on at least side of the support, in order: - an optional porous polymer layer (200), - a non-porous alkali-stable polymer layer (300), and - a catalyst layer (400).
Absstract of: WO2025132521A1
The present invention refers to an electrochemical system comprising: i. an electrolyte, preferably a liquid electrolyte, more preferably an aqueous electrolyte, comprising a stabilizing anion, wherein said electrolyte comprises > 10 mol/mol % of water; ii. a redox mediator electrode comprising Ga(0) or alloys thereof; iii. a cathode; iv. an anode; and v. a wavefunction generator to alternately polarize the electrical connection between the redox mediator electrode and the cathode or anode; wherein the redox mediator electrode is electrically connected with the cathode and the anode, provided that the anode and the cathode are not electrically connected with each other. The gallium-based redox mediator electrode permits the nearly complete reversibility between dissolution and electroplating of gallium, thus cathodic and anodic reactions can be carried out in an alternating manner by electrically connecting the redox mediator electrode with the cathode or the anode. The present invention also refers to a method for the electrochemical production of H2, and oxidized species, such as O2 and/or Cl2 or H+, with the electrochemical system of the invention. Therefore, the present invention may find application in fuel production, e.g. in combination with fuel cells or internal combustion engines, or in chemical reactions such as hydrogenation reactions, reversible H2 production and H2 oxidation, hydrotreating reactions, hydrocracking reactions, hydroisomerisation reactions, oil
Absstract of: WO2025132418A1
The invention relates to a water electrolysis installation (P) comprising a plurality of electrolysis clusters (Ci) operated at respective electrical power setpoints (Pi k). The installation comprises and a supervision unit (SU) for operating the installation (P) according to an electrical network flexibility signal (FSk), the supervision unit (SU) comprising a modulation controller (MOD) for modulating synchronously the electrical power drawn by the installation (P) from an electrical network (NET) according to a preset arrangement, a priority sequencer (SEQ) to establish the preset arrangement asynchronously to the modulation controller (MOD), and a regulator module (REG) to regulate the actual power (Pk) drawn by the installation.
Absstract of: WO2025132365A1
The invention relates to a device/method for capturing/converting CO2, comprising/using a CO2 capturing unit (2), a water electrolysis unit (5), an RWGS unit (8), an FT unit (13), a unit for converting by-products into syngas (28) and a hydrogen unit (20), in which a carbon dioxide separation unit (34) is arranged to: treat a first syngas (12) and a second syngas (29); produce a gaseous effluent depleted in carbon dioxide (18) and a gaseous effluent rich in carbon dioxide (35); and recycling the gaseous effluent rich in carbon dioxide (35) to the inlet of the RWGS section (8).
Absstract of: WO2025131874A1
The invention relates to a system (120) consisting of at least two catalyzers (100), in particular for use in electrochemical cell devices (10), preferably fuel cell devices (10), wherein the at least two catalyzers (100) are fluidically connected in series, and each of the at least two catalyzers (100) has a catalytically active material (108), each of which is provided on a main part (102). At least one first catalyzer (100a), which is arranged first in the flow direction, has a protective material (110), which is designed to bind chromium and is provided on the main part (102). According to the invention, the first catalyzer (100a) is designed to oxidize hydrogen, and a second catalyzer (100b), which is arranged after the first catalyzer (100a) in the flow direction, is designed to oxidize methane.
Absstract of: AU2023284373A1
The present invention relates to the technical field of hydrogen energy power generation, and provided is a hydrogen energy uninterruptible power system. Said system comprises a hydrogen production unit, a power storage unit, a power generation apparatus, and a control unit, wherein the hydrogen production unit is able to utilize electrolysis to prepare hydrogen and oxygen gases; the power storage unit can supply power to the hydrogen production unit, and can output power to the outside; the power generation apparatus can receive the hydrogen and oxygen gases output by the hydrogen production unit and generate power, and the power generation apparatus can output power to the outside or transfer power to the power storage unit; and the control unit communicates with the hydrogen production unit, the power storage unit, and the power generation apparatus by means of electrical signals.
Absstract of: CN119403758A
A process for dissociating ammonia into a dissociated hydrogen/nitrogen stream in a catalyst tube within a radiant tube furnace and an adiabatic or isothermal unit containing a catalyst, and a downstream purification process unit for purifying the dissociated hydrogen/nitrogen stream into a high purity hydrogen product.
Absstract of: JP2025095274A
【課題】予備処理を行わなくてもアルカリ水電解時の耐久性（耐金属溶出性）を確保することが可能なアルカリ水電解装置用部材を与える省Ｎｉ型のアルカリ水電解装置用ステンレス鋼材を提供する。【解決手段】質量基準で、Ｃ：０．１００％以下、Ｓｉ：１．００％以下、Ｍｎ：３．００～１２．００％、Ｎｉ：７．００～９．００％、Ｐ：０．００３０％以下、Ｓ：０．００３０％以下、Ｃｒ：１０．０～１８．０％、Ｎ：０．０１～０．２５％、Ｃｕ：０．０１～１．００％、Ｍｏ：０．０１～１．００％、Ａｌ：０．００５～０．０８０％、Ｂ：０．０００１～０．０１００％、Ｃａ：０．０００５～０．０１００％、Ｏ：０．０１００％以下を含み、残部がＦｅ及び不純物からなるアルカリ水電解装置用ステンレス鋼材とする。【選択図】なし
Absstract of: WO2025135740A1
The present invention relates to a device for producing hydrogen from ammonia for a ship. According to the present invention, high-pressure hydrogen can be produced by using liquefied ammonia for a ship, and hydrogen can be economically produced by utilizing unconverted ammonia discharged from a decomposition reactor and off-gas discharged from a pressure swing adsorption device as a heat source for ammonia decomposition through a heat exchange network of the ship.
Absstract of: WO2025135743A1
The present invention provides a water electrolysis stack assembly and a hot box apparatus. In an embodiment, provided is a water electrolysis stack assembly including: a case including an upper surface part, a side surface part, and a gas outflow pipe formed in the side surface part; and a stack accommodated in an inner space of the case, wherein a surface pressure is applied to the stack by the upper surface part of the case.
Absstract of: WO2025135742A1
A control method of a high-temperature water electrolysis system, according to a first embodiment of the present invention, comprises the steps of: determining an operating temperature of a solid oxide water electrolysis stack in a high-temperature water electrolysis system including the solid oxide water electrolysis stack; selecting an operation mode of the solid oxide water electrolysis stack by comparing the operating temperature with a supply temperature of gas supplied to the solid oxide water electrolysis stack; determining a target voltage applied to the solid oxide water electrolysis stack according to the operation mode of the solid oxide water electrolysis stack; and applying the target voltage applied to the solid oxide water electrolysis stack in a step-up manner according to the operation mode of the solid oxide water electrolysis stack.
Absstract of: WO2025135726A1
The present invention provides a hydrogen vent system for discharging hydrogen generated in a high-temperature water electrolysis stack to the outside, comprising: a first pipe unit connected to the high-temperature water electrolysis stack and having a curved portion; a drain line which is connected to the first pipe unit and through which condensed water is drained; and a discharge unit which is connected to the first pipe unit and which releases hydrogen upward into the air, wherein a surge tank that maintains pressure and moves the condensed water to the drain line is disposed in the first pipe unit.
Absstract of: WO2025135328A1
The present invention relates to a water electrolysis system comprising: a hydrogen (H2) removal device; and an oxygen (O2) removal device, wherein the hydrogen (H2) removal device removes, from an oxygen (O2) stream, hydrogen (H2), and the oxygen (O2) removal device removes, from a hydrogen (H2) stream, oxygen (O2). By removing hydrogen (H2) and oxygen (O2) from the respective gas streams, the likelihood of explosion accidents during the movement of the gas streams is remarkably reduced, and the purity requirements of various industrial gases can be satisfied without a separate purification process.
Absstract of: WO2025135348A1
The present disclosure relates to a method for preparing a catalyst for an oxygen evolution reaction in a water electrolysis cell, and a water electrolysis cell membrane-electrode assembly and a water electrolysis cell, which comprise the catalyst prepared using same, and the method for preparing a catalyst for an oxygen evolution reaction in a water electrolysis cell comprises preparing a plurality of noble metal oxide seeds, and preparing a noble metal oxide aggregate by using the plurality of noble metal oxide seeds, thereby increasing the surface area thereof by means of pores between noble metal oxide particles, and thus performance and durability can be improved.
Nº publicación: WO2025137083A1 26/06/2025
Applicant:
WORCESTER POLYTECHNIC INST [US]
WORCESTER POLYTECHNIC INSTITUTE
Absstract of: WO2025137083A1
An electrolyzer for gaseous production such as hydrogen gas includes an oscillating electrode driven at a natural frequency of the gaseous bubbles improves output by readily removing the gaseous bubble product from the electrode surface, thereby exposing greater electrode surface area for subsequent electrolysis reactions. A natural frequency of the gaseous product determines an oscillation frequency with which to drive the electrode accumulating the gaseous product, such as hydrogen bubbles, to agitate and release the bubbles which then rise to the surface of the liquid filled containment. Integrating oscillation logic for agitating the otherwise stationary electrode or cathode in a PEM water electrolyzer improves hydrogen production by readily evacuating the generated hydrogen to free up the electrode area for additional electrolysis reactions.
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