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1246
results.
Updated on
18/07/2026 [07:42:00]
Results 775 to 800 of 1246
Absstract of: AU2024380664A1
Porous hydrophilic separator, its method of production, and an alkaline electrolyzer with such separator In an alkaline electrolyzer (12), especially for production of hydrogen gas, the separator (11) has larger pores in layers (8, 9) on its outer sides (7A, 7C), facing the electrodes (13, 14), than in the bulk layer (10). In a practical embodiment, the separator (11) is composed of two diaphragms (7, 7'), each with asymmetric pore structure, where the diaphragms (7, 7') are oriented such that largest pores are on the outer sides of the sep- arator (11).
Absstract of: EP4752265A1
A control method and apparatus for a hydrogen production system. The method comprises: for each electrolytic cell, performing evaluation to obtain energy efficiencies of the electrolytic cell under load currents; for each electrolytic cell, converting the energy efficiencies of the electrolytic cell under the load currents into an energy efficiency value of the electrolytic cell; and ranking the electrolytic cells in descending order according to the energy efficiency values of the electrolytic cells, and performing power distribution on the electrolytic cells on the basis of the ranking. In the present solution, current efficiencies corresponding to load currents are obtained on the basis of bypass currents under the load currents, energy efficiencies corresponding to the load currents are obtained on the basis of the current efficiencies and the voltage efficiencies, the energy efficiencies are converted into energy efficiency values, and power distribution is performed on electrolytic cells on the basis of the energy efficiency values, thereby achieving the purpose of controlling the power distribution for electrolytic cells in a hydrogen production system on the basis of accurate energy efficiencies of the electrolytic cells.
Absstract of: GB2644813A
The present application belongs to the field of hydrogen preparation and storage equipment. Disclosed are a magnesium-based solid hydrogen storage alloy in-situ hydrogen absorption and hydrolytic hydrogen production device, and the use thereof. The device provided in the present application can achieve controllable hydrogen charging and hydrolytic hydrogen production of a magnesium alloy material in the same tank, thereby greatly improving the hydrolytic hydrogen production efficiency of a magnesium hydrogen storage material and shortening the manufacturing time of a system. In the device, hydrogen can be directly introduced into a stainless steel tank (1), such that hydrogen is absorbed by a magnesium alloy, so as to generate a hydrogenated magnesium alloy, and water is introduced when hydrogen is required for use later to hydrolyze the hydrogenated magnesium alloy, so as to produce hydrogen. During the process, the magnesium alloy does not need to be taken out and exposed to air after hydrogen absorption, nor needs to be further treated, and the hydrogen absorption and hydrolytic hydrogen production of the magnesium alloy can be finished stepwise in the same device, this process greatly saving on the manufacturing time and cost of a hydrolytic hydrogen production tank.
Absstract of: US2024426000A1
0000 The present disclosure introduces systems and related methods. Each system includes a first water electrolysis subsystem and a second water electrolysis subsystem. The first water electrolysis subsystem electrolyzes water to produce hydrogen and waste thermal energy. The second water electrolysis subsystem electrolyzes water to produce hydrogen utilizing the waste thermal energy produced by the first water electrolysis subsystem.
Absstract of: DE102024135927A1
Die Erfindung betrifft eine Elektrode (10) mit einem als Drahtgewebe (12) ausgebildeten Metallsubstrat (14) sowie eine Elektrolysezelle (100) umfassend eine solche Elektrode.
Absstract of: WO2025021318A1
The compression arrangement comprises a hydrogen compressor and a return circuit having an inlet, which is fluidly coupled with the discharge side of the centrifugal compressor, and an outlet, which is fluidly coupled with the suction side of the centrifugal compressor. A head-loss control valve is positioned in the return circuit. The head-loss control valve is adapted to generate a controlled head loss in the return circuit when the compressor operates at a flowrate below the surge control line.
Absstract of: WO2025022382A1
The present invention relates to a process of producing hydrogen gas from water vapor in the presence of an alkali metal, which is being recycled through the process.
Absstract of: WO2025067764A1
The invention relates to an offshore electrolysis system (100) comprising: a wind turbine (1) with a platform (3) and with an electrolysis plant (5) which is arranged on the platform (3) and is connected to the wind turbine (1) in order to supply electrolysis current; and a heat supply device (7) which is coupled to the electrolysis plant (5) and has a combustion device (13), wherein a fuel reservoir (15) is connected to the heat supply device (7) such that, during a standstill mode, heat generated by means of the combustion device (13) can be transferred to the electrolysis plant (5) so as to maintain the temperature above a minimum temperature. The invention also relates to a method for operating a corresponding offshore electrolysis system (100), wherein, during a standstill mode, heat is generated by means of the heat supply device (7) and transferred to the electrolysis plant (5) so as to maintain the temperature above a minimum temperature and prevent freezing of water-carrying components of the electrolysis plant (5).
Absstract of: EP4752264A1
The present invention relates to the technical field of the electrolysis of water, and specifically relates to a low-hydrogen-permeability proton exchange membrane, and a preparation method therefor and the use thereof. The proton exchange mem-l brane comprises a Pt-containing additive layer and a matrix membrane, wherein the Pt-containing additive layer is composed of a Pt additive and a fluorine-containing proton exchange resin, the Pt-containing additive layer comprises an array layer and a flattening layer, the thickness ratio and the active-component ratio of the array layer to the flattening layer are respectively within the ranges of 1:(0.5-30) and 1:(1-50), and the array layer is composed of arrays arranged in order and an array layer resin coating the arrays. In the low-hydrogen-permeability proton exchange membrane provided by the present invention, by providing the Pt-containing additive layer consisting of the array layer and the flattening layer, the specific surface area of the Pt-containing additive layer is effectively increased by means of the arrays in the array layer, thereby achieving the efficient utilization of an additive; moreover, the hydrogen permeability improvement effect is further improved by controlling the thickness ratio and the active-component ratio of the array layer to the flattening layer and the parameters of the arrays.
Absstract of: WO2025143197A1
This cathode for water electrolysis includes a catalyst part and a reverse current absorber that is electrically connected to the catalyst part, wherein the reverse current absorber contains a hydrogen storage alloy, and the hydrogen storage alloy contains Al.
Absstract of: CN122124731A
0001 本发明公开了一种管式光催化反应装置，属于光反应设备技术领域。该种管式光催化反应装置包括支撑框架，包括水平设置的顶板、底板以及竖直设置的若干支撑柱，支撑框架外侧套设有外侧罩；反应组件，包括光源管和若干透明玻璃反应管，光源安装于顶板和底板之间位于底板中心处，顶板和底板相互远离一侧均设有回水分路器，顶板和底板上固定设置有用于安装透明玻璃反应管的反应管座，反应管座内开设有环形密封槽；分离反应器，包括反应桶、分离桶和搅拌器，分离桶和搅拌器均置于反应桶内；在运行中，反应介质冲击转动的分离桶锥面，产生离心分离效应，气体高效分离并收集，而搅拌器持续混合溶液，防止催化剂沉淀，催化效率提升。
Absstract of: WO2023208776A1
A separator for alkaline electrolysis (1) comprising a porous support (10), a first porous layer (20b) provided on one side of the porous support and a second porous layer (30b) provided on the other side of the porous support, wherein the first and the second porous layer are partially impregnated into the porous support and each have an overlay thickness d1 and d2 respectively, said overlay thickness being defined as the part of each porous layer which is not impregnated into the porous support, characterized in that a) d1 is smaller than the overlay thickness of the second porous layer (d2), and b) d1 is at least 20 µm.
Absstract of: NL2034809B1
The present invention relates to a hydrogen gas production assembly comprised of a hydrogen gas production device, a container comprising an aqueous electrolyte solution, a storage container for storing produced hydrogen gas an input providing the aqueous electrolyte solution from the container to the hydrogen gas production device and an output for transferring produced hydrogen gas from the hydrogen gas production device to the storage container. The present invention further relates to methods for the production of hydrogen gas via the hydrogen gas production assembly.
Absstract of: WO2025053761A1
The present invention relates to a water electrolyser system for production of compressed hydrogen, comprising a water electrolyser stack, a multiphase pump arranged downstream of the electrolyser stack and a hydrogen gas/liquid separator. The multiphase pump is arranged between the water electrolyser stack and the hydrogen gas/liquid separator. The present invention also relates to a method for production of compressed hydrogen in a water electrolyser system including: supplying deionized water or liquid electrolyte to a water electrolyser stack; producing hydrogen in a water electrolyser stack; compressing a mixture of produced hydrogen and entrained deionized water or liquid electrolyte in a multiphase pump; and separating the compressed mixture of produced hydrogen and entrained deionized water or liquid electrolyte in a hydrogen gas/liquid separator.
Absstract of: WO2025051652A1
The invention relates to a method for operating an electrolysis plant (1), comprising a stack (2) having an anode (3) and a cathode (4), wherein in normal operation of the electrolysis plant (1), water is supplied to the anode (3) via a water circuit (5) with an integrated pump (6), said water being split in the stack (2) by electrolysis into hydrogen and oxygen, and wherein the hydrogen produced by electrolysis is supplied to a gas-liquid separator (8) via a cathode outlet (10) of the stack (2) and a media line (7) connected thereto. According to the invention, when the electrolysis plant (1) is switched off, the current density is reduced to 0 A/cm² and the media line (7) is shut off with the aid of a valve (9), while the anode (3) continues to be supplied with water via the water circuit (5) with the aid of the pump (6). The invention further relates to an electrolysis plant (1) that is suitable for carrying out the method or can be operated according to the method.
Absstract of: US2024360574A1
0000 A family of catalysts for oxygen evolution reaction (OER) in alkaline condition is disclosed. The catalysts utilize elements which are abundant on earth, leading to lower costs compared to IrO<2 >catalysts. The catalysts can be used in the anode of an anion exchange membrane-based water electrolyzer. The family of new catalysts comprises Ni, Fe, M, B, and O, where M is a metal from Group VIB, Group VIII, and elements 57-71 of the Periodic Table. The catalyst has a layered double hydroxide structure. Methods of making the catalysts are also described.
Absstract of: WO2022240954A1
Herein discussed is a method of producing hydrogen comprising introducing a metal smelter effluent gas or a basic oxygen furnace (BOF) effluent gas or a mixture thereof into an electrochemical (EC) reactor, wherein the EC reactor comprises a mixed-conducting membrane. In an embodiment, the method comprises introducing steam into the EC reactor on one side of the membrane, wherein the effluent gas is on the opposite side of the membrane, wherein the effluent gas and the steam are separated by the membrane and do not come in contact with each other.
Absstract of: EP4470969A1
The proposed invention concerns a process (100) for producing a cracked gas product comprising hydrogen from an endothermic cracking reaction of an ammonia feedstock stream, comprising the following steps:• Providing an ammonia feedstock stream (101),• In a main reactor, converting the ammonia feedstock stream into a cracked gas product by performing a main endothermic cracking conversion (102) of said ammonia feedstock stream, the cracked gas product comprising hydrogen, nitrogen and a remaining unconverted portion of ammonia,• In a secondary reactor, performing a secondary endothermic cracking conversion (104) of the remaining unconverted portion of ammonia into a hydrogen enriched fuel gas,• Redirecting the hydrogen enriched fuel gas to a fuel device (105), in particular comprising a burner, arranged to perform a combustion reaction (111) of said hydrogen enriched fuel gas, potentially with an additional fuel gas stream,• Heating the main endothermic cracking conversion (112) with heat provided by said combustion.
Absstract of: WO2024237512A1
Provided in the present invention is a method for manufacturing an anion exchange membrane water electrolysis system, comprising the steps of: separately manufacturing a preliminary reduction electrode and an oxidation electrode; interposing an anion exchange membrane between the preliminary reduction electrode and the oxidation electrode so as to manufacture a preliminary membrane-electrode assembly; and supplying an alkali aqueous solution to the preliminary membrane-electrode assembly and activating the preliminary reduction electrode, wherein: the preliminary reduction electrode has a Ni to Mo molar ratio of 1:1 to 6:1 and includes NiMO-based alloy particles having an Mo oxidation number of 4 +, 5 +, or 6 +; and the activation occurs by applying a current at a current density of 25 to 200 mA/cm^2 and maintaining the current at 50 to 60℃ for 90-360 minutes. The anion exchange membrane water electrolysis system manufactured through the manufacturing method exhibits improved durability and efficiency together with excellent water electrolysis performance.
Absstract of: CN122124870A
本发明提供了一种羧基功能化g‑C3N4负载Cu‑MOF催化剂及其制备方法和应用，属于光催化材料技术领域。首先将氮化碳前驱体、羧基化试剂混合于溶剂中进行羧基化反应，制得羧基化石墨相氮化碳；再将羧基化石墨相氮化碳和铜盐溶液混合进行初步反应，制得铜负载的C3N4‑C粉末；最后将铜负载的C3N4‑C粉末、1,3,5‑均苯三甲酸分散于溶剂中进行水热反应，制得羧基功能化g‑C3N4负载Cu‑MOF催化剂。本发明通过定向组装和生长，最终获得界面结合紧密、结构稳定、光生电荷分离效率高的复合光催化剂。
Absstract of: CN122124705A
0001 本发明公开了一种基于可再生能源的酸液循环供氢设备及供氢方法。酸液循环供氢设备包括制氢装置、可再生能源供电装置、酸液循环装置和控制装置；制氢装置，具有供储氢材料和酸液反应生成氢气的反应室，以向外部供氢；酸液循环装置，与反应室连通，以将制氢装置生成的废液恢复为制氢反应所用的酸液，并向制氢装置供给酸液；可再生能源供电装置，与制氢装置、酸液循环装置和控制装置连接并为它们供电；控制装置，连接并控制制氢装置、酸液循环装置和可再生能源供电装置。本发明利用储氢材料和酸液反应生成氢气，并利用可再生能源供电启动酸液循环装置以将反应废液恢复为制氢反应所用酸液，实现酸液循环利用的低成本供氢技术。
Absstract of: CN122128730A
本申请涉及制氢技术领域，公开了一种电解水制氢耦合生物质高值化产物联产装备，包括：供液模块、电解槽、气体处理模块和液体处理模块；电解槽与所述供液模块连接，以接受所述供液模块提供的有机混合液；气体处理模块包括气液分离器和氢气输出管，所述气液分离器的进口与所述电解槽的阴极输出侧连接，所述气液分离器的排气口与所述氢气输出管连接；液体处理模块包括结晶釜和有机产物输出管，所述结晶釜与电解槽的阳极输出侧连接，以对阳极反应液进行混酸，所述有机产物输出管与所述结晶釜连接以将结晶釜中结晶的有机产物排出。该联产装备可以实现低能耗、高选择性、高效率的氢气与高值化有机产物协同制备。
Absstract of: CN122128761A
本发明公开了一种碱性电解水制氢系统及其控制方法，属于碱性电解水制氢领域。控制方法包括：获取实时工况参数；基于预设的机理模型预测保证气体纯度安全的第一流量边界和保证电解槽温度安全的第二流量边界；结合气体纯度实测值与温度实测值对边界进行修正，若纯度超标则下调第一边界，若温差超标则上调第二边界，共同界定实际运行的安全流量区间；在安全流量区间内，基于气泡过电位机理模型实时计算的气泡过电位占比，以该占比最低为目标动态寻优并调节电解液循环流量。本发明通过模型预测边界、实时反馈修正、效率动态寻优的三级闭环控制，在保障气体纯度安全的同时降低气泡过电位造成的电压损失，实现安全与效率的协同优化。
Absstract of: CN122128754A
0001 本发明公开一种过渡金属羟基氧化物/钴氧化物异质结电催化剂，所述电催化剂为以富电子态的钴氧化物纳米阵列为内核，过渡金属羟基氧化物为外壳形成的异质结，所述异质结具有界面内建电场，通过调控钴氧化物的电子态可精确控制界面内建电场的方向与强度以增强氧析出反应活性；通过利用钴氧化物与NiFeOOH构建异质结，通过调控钴氧化物中钴离子的电子态可精确控制界面内建电场的方向与强度，使异质结具有最低的反应能垒，提升阳极析氧反应（OER）性能和电解水的性能，实现催化活性的最大化。
Nº publicación: CN122128737A 02/06/2026
Applicant:
郑州大学
Absstract of: CN122128737A
本发明公开了一种碳氮载体负载的钌镍纳米合金电催化材料的制备方法及其应用。将三聚氰胺分散于有机溶剂中搅拌至均一，然后加入1,5二氨基戊烷搅拌均匀，得到溶液A；将钌盐与镍盐加入有机溶剂中超声处理，得到溶液B；将溶液B缓慢倒入溶液A中搅拌反应，反应后静置至形成稳定沉淀；所得沉淀经分离、洗涤、干燥，得到粉末状前驱体；将粉末状前驱体进行热解反应，得到初级催化材料；所得初级催化材料置于盐酸溶液中进行浸泡、干燥至恒重，得到碳氮载体负载的钌镍纳米合金电催化材料即二元合金NixRu2‑x/NC催化剂。本发明制备所得催化剂在酸性、中性、碱性电解水析氢反应中表现出极其优异的催化性能，其析氢活性显著优于商业铂碳催化剂。
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