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1102
results.
Updated on
21/08/2026 [07:00:00]
Results 450 to 475 of 1102
Absstract of: WO2026151905A1
A method for passively producing hydrogen from a geological formation includes drilling a plurality of lateral wellbores into an iron-rich geological formation from a mother wellbore extending from a surface location. Each of the plurality of lateral wellbores has an inclination along its length of less than 90 degrees. A biocide configured to inactivate hydrogen-consuming microbes is placed into the plurality of lateral wellbores and thereby into formation water that is flowed from the geological formation into the plurality of wellbores. Hydrogen gas effervesced from the formation water in the plurality of lateral wellbores is collected via the mother wellbore. The hydrogen gas is generated at least in part from a water reduction reaction of minerals of the geological formation with the formation water and risen through the plurality of lateral wellbores passively by buoyancy effects without pumping.
Absstract of: US20260201572A1
0000 A reactor is configured to electrochemically convert hydrogen sulfide to produce hydrogen. The reactor includes a first shell, a second shell, a hydrogen-permeable electrode, and a check valve. The first shell defines a first chamber. The first shell defines a first inlet for water, a second inlet for hydrogen sulfide, and a first outlet for hydrogen sulfide. The second shell defines a second chamber isolated from the first chamber. The second chamber stores hydrogen molecules. The hydrogen-permeable electrode is at least partially disposed within the first chamber. The hydrogen-permeable electrode is permeable to hydrogen atoms originating from the hydrogen sulfide. The check valve allows flow of hydrogen molecules, formed from the hydrogen atoms that have permeated into the hydrogen-permeable electrode, into the second chamber while preventing flow of hydrogen molecules back out from the second chamber through the check valve.
Absstract of: WO2026150031A1
The disclosure relates to efficient systems (10, 100) and methods for green-hydrogen production. A system (10) for off-grid green-hydrogen production is provided, the system (10) comprising: a renewable-energy source module (1) configured to provide power from one or more renewable-energy sources, an electrolyser module (2) configured to produce green hydrogen based on the power provided by the renewable-energy source module (1), a grid-forming energy-storage module (3) configured to provide grid-forming capabilities to the renewable-energy source module (1) and the electrolyser module (2), a plurality of power-converter modules (C1, C2, C3) configured to allow power flow between the renewable-energy source module (1), the electrolyser module (2), and the grid-forming energy-storage module (3), which are electrically connected to each other, and a central controller (5) configured to control the power flow by controlling the plurality of power-converter modules (C1, C2, C3).
Absstract of: WO2026151283A1
The present invention provides an AEM water electrolysis system comprising: an electrolytic cell; a cathode separator provided downstream of the electrolytic cell; a degassing device provided downstream of the cathode separator; and an anode separator provided downstream of the degassing device, wherein hydrogen of a KOH solution discharged from a cathode of the electrolytic cell is degassed through the cathode separator and the degassing device, and the KOH solution is continuously supplied to the electrolytic cell through the anode separator.
Absstract of: DE102025101252A1
Reaktionszelle (1) zur solaren Molekülspaltung, die Reaktionszelle (1) aufweisend:- eine Sandwichstruktur (2), gebildet aus einem Bodenelement (3) und einem lichtdurchlässigen Deckelement (4),- eine innerhalb der Sandwichstruktur (2) angeordnete Elektrode (5), ausgebildet zur solaren Molekülspaltung,- eine Zuführeinrichtung (6), ausgebildet zur Zufuhr eines Elektrolyten (7) zu der Elektrode (5), und- eine Abführeinrichtung (8), ausgebildet zur Ableitung eines Reaktionsprodukts (10).
Absstract of: US20260202368A1
A determination device determines deterioration of an electrolyte membrane in an electrochemical device including an electrochemical cell and a volume portion in which gas generated by the electrochemical cell collects. The determination device includes a deterioration determination unit that determines whether or not the electrolyte membrane has deteriorated based on a detection signal of a detection sensor for detecting a current flowing between a first electrode and a second electrode, an output signal of a pressure sensor for detecting a pressure in the volume portion, a gas generation amount calculated from the current, and the pressure in the volume portion.
Absstract of: US20260199877A1
0000 A process for removing hydrogen from an oxygen gas stream includes electrolysing water in an electrolyser to generate a hydrogen-rich stream and an oxygen-rich stream. The oxygen-rich stream includes hydrogen. The process also includes feeding the oxygen-rich stream to a reactor having a gold-containing catalyst and contacting, in the reactor, the oxygen-rich stream with the gold-containing catalyst. The gold-containing catalyst includes gold and a second metal on an oxidic support and an oxygen partial pressure of the oxygen-rich stream in the reactor is greater than 1 bar.
Absstract of: EP4775533A1
0001 (EN) The present invention relates to a method for obtaining hydrogen through water molecule dissociation using thermochemical reactions under (quasi-)isothermal conditions, which comprises the following steps: placing active material (103) in the reaction chamber (109) of a reactor (101); reducing the active material (103) by supplying heat; evacuating the oxygen produced through a first outlet (106); injecting water into the reaction chamber (109); oxidizing the active material (103), thereby producing hydrogen; filtering the hydrogen produced through a selective filter (104) during the oxidization of the active material (103); and evacuating the filtered hydrogen through a second outlet (107), thereby obtaining a flow of high-purity hydrogen. The invention also relates to a device for carrying out the method.
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: EP4775532A1
0001 (EN) The present invention relates to a method for producing hydrogen by means of thermochemical water dissociation cycles under (quasi-)isothermal conditions, wherein said method comprises arranging a large amount of active material (104) inside a reaction volume (109) of a reactor (103); heating the active material (104), reducing the active material (104) and generating oxygen in the reaction volume; evacuating the oxygen produced via a first evacuation path (111) of the outlet (106) of the reactor (103); injecting water into the reaction volume (109) of the reactor, oxidating the active material (104) and producing hydrogen; evacuating the hydrogen produced via a second evacuation path (112) of the outlet (106) of the device (100); and separating the evacuated hydrogen and remaining water. The invention further relates to a device for producing hydrogen.
Absstract of: EP4775713A1
0001 The present invention relates to the technical field of alkaline water electrolyzers for hydrogen production, in particular to a method and monitoring system for safe operation control of an alkaline water electrolyzer. The method includes: mounting at least one disc spring deformation monitoring instrument at a disc spring of the alkaline water electrolyzer to monitor the deformation of the disc spring and provide a safe operation control signal source of the electrolyzer; making a control judgment according to the deformation of the disc spring monitored by the disc spring deformation monitoring instrument to judge whether the electrolyzer is within a safe operation range; and triggering a stop signal to stop the operation of the electrolyzer when the deformation of the disc spring exceeds a specified safe use range. According to the present invention, safety problems caused when the electrolyzer operates can be effectively found, and a judgment for electrolyzer maintenance can be made in time to guarantee the safe operation of the electrolyzer.
Absstract of: WO2025093251A1
An energy production and storage system comprises a power input connection (10) for a renewable energy source (2); an electrolysis device (16) for electrolysis of water to produce oxygen, hydrogen, and heat; an electrical energy storage device (14); a two-way grid connection (12) coupled to an external electrical grid (4); and a controller (8). The controller (8) is configured to: (i) receive information relating to: actual or potential energy production from the renewable energy source (2), the amount of stored energy in the electrical energy storage device (14), and balancing requirements for the external electrical grid (4); (ii) use the energy from the renewable energy source (2) to power the electrolysis device (16) and/or for storage in the energy storage device (14); and (iii) based on the received information, operate the energy production and storage system as a balancing service provider by either: drawing power from the grid (4) to supply the electrolysis device (16), or supplying power to the grid (4) from the electrical energy storage device (14), thereby acting as a switch to aid in balancing for the external electrical grid (4).
Absstract of: KR20260111341A
본 발명은 선박용 암모니아 수소추출시스템에 관한 것으로, 더욱 자세하게는, 암모니아 크래커로부터 얻은 분해가스와 상기 암모니아 저장탱크로부터 암모니아 크래커로 이송되는 원료가스 사이의 열교환을 수행하는 분해가스-원료가스 열교환기, 상기 분해가스-추가가스 열교환기를 통과한 열교환 분해가스와 냉각매체 사이의 열교환을 수행하는 분해가스-냉각매체 열교환기, 및 상기 분해가스 내 잔류하는 암모니아를 흡착하여 제거하는 VPSA를 포함하여 암모니아 수소추출설비에서 발생하는 잔류 암모니아를 완전히 제거하여 연료전지에 공급할 수 있다.
Absstract of: WO2025051333A1
The invention relates to a plate-like element (10) of a cell stack (2) of an electrochemical system (1), having a first plate side (26), a second plate side (27), a plurality of openings (13, 21, 22, 23, 23') and a first structure (14) for forming a flow field for coolant and several further structures (14') for forming distributors for operating media on the first plate side (26). The structure (14) comprises a coolant conducting structure (15, 16) through which a first coolant path (15) and a second coolant path (16) arranged mirror-symmetrically thereto are formed, each of which have, starting from one of the openings (21), an elongate inflow portion (17), a centre portion (18) which starts from the inflow portion (17), fans out and describes at least one meandering bend (19), and an elongate outflow portion (20) which adjoins the centre potion (18) and is narrower than the centre portion (18). A longitudinal axis (30) of the inflow portion (17) of the first coolant path (15) matches a longitudinal axis (30) of the outflow portion (20) of the second coolant path (16), and a longitudinal axis (30') of the inflow portion (17) of the second coolant path (16) matches a longitudinal axis (30') of the outflow portion (20) of the first coolant path (15). The invention also relates to a cell stack (2) comprising a plurality of such plate-like elements (10) which are parallel to one another.
Absstract of: EP4570744A1
0001 A method for producing hydrogen using a feed stream comprising ammonia is provided. The method can include the steps of: cracking a gaseous ammonia feed in an ammonia cracker to produce a cracked gas stream comprising hydrogen, nitrogen, and unreacted ammonia; cooling the cracked gas stream to a first temperature that is sufficient for condensing at least a portion of the unreacted ammonia to form a dual phase fluid; separating the dual phase fluid in an ammonia separator to produce a liquid ammonia stream and a top gas stream comprised predominately of hydrogen and nitrogen; removing additional ammonia from the top gas stream using a front-end purification system to form a purified top gas stream; further cooling the purified top gas stream to a second temperature that is sufficient for condensing at least a portion of the nitrogen within the top gas stream to form a dual-phase stream, wherein the second temperature is colder than the first temperature; introducing the dual-phase stream to a cryogenic hydrogen separator under conditions effective for separating hydrogen and nitrogen, thereby creating a liquid nitrogen stream and a hydrogen top gas; warming and vaporizing the liquid nitrogen stream to produce a gaseous nitrogen stream; warming the hydrogen top gas to produce a gaseous hydrogen product stream; and recycling the liquid ammonia stream produced by the ammonia separator to a point upstream the ammonia cracker.
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: WO2025051317A1
The invention relates to a fluid-conducting plate arrangement (3) of an electrochemical system (1), comprising a compression plate (4) which has an inner side (6), facing a stack of electrochemical cells, and an outer side (5) and is passed through by a plurality of through-openings to which a plurality of coolant passages (8, 9), namely a coolant inlet (8) and a coolant outlet (9), are to be assigned, wherein each coolant passage (8, 9) has a branch (12) which opens towards the inner side (6) and is formed by the compression plate (4) together with an insert plate (10) inserted into it on the outer side, such that the compression plate (4) has two separate passage portions (13, 14) and the insert plate (10) has a collecting portion (18) which adjoins the two passage portions (13, 14).
Absstract of: US2025075350A1
0000 An assembly for an electrochemical device may include, among other things, a conductive metallic plate and at least one carbon layer extending along the metallic plate. The at least one carbon layer may include a plurality of carbon fibers that may establish a porous construct. A plastic film may extend between the metallic plate and the at least one carbon layer. The plastic film may impregnate the porous construct such that the at least one carbon layer may be substantially impermeable to fluid. At least some of the carbon fibers may extend through the plastic film to establish a conductive path between the at least one carbon layer and the metallic plate. A method of forming an electrochemical device is also disclosed.
Absstract of: WO2025051336A1
An electrolyzer stack in which gas passages (16C, 16D) and thin and long shunt-current reducing liquid passages (16A, 16B) are provided inside a gasket that is a combination of a first and a second gasket part (12A, 12B) for ease of assembly.
Absstract of: CN122377500A
本发明属于光催化技术领域，涉及一种单原子铜负载氮化碳纳米片的光催化剂，铜是以单个金属原子的形式存在于氮化碳纳米片中。其制备方法包括以下过程：将三聚氰胺进行水热反应，干燥后得到前驱体粉末；将铜源与前驱体粉末进行浸渍，干燥后先通过梯度煅烧，再在530‑600℃下煅烧2‑6小时，得到单原子铜负载氮化碳纳米片的光催化剂。本发明的制备方法简单易行，不需要复杂昂贵的设备、绿色环保无二次污染，反应条件温和，有利于在污染治理技术中推广应用。本发明所制的单原子铜负载的氮化碳纳米片能利用光催化还原水中氢离子制备氢气，以单原子形式存在的铜能够有效提高材料中电子转移效率，实现光催化分解水的高效析氢。
Absstract of: CN122382640A
本发明公开了一种BiVO4/CoOx/VO2/FeOOH光阳极复合材料的制备方法及人工树叶装置应用，属于新能源材料技术领域。本发明通过在光阳极表面引入CoOx与VO2作为协同空穴储存层，使光阳极能够在不同电位区间实现对光生空穴的有效储存与调控，从而促进光生载流子的空间分离，抑制电子–空穴复合，并显著提升光阳极的光电流密度。此外，进一步引入FeOOH作为析氧助催化剂以提升水氧化反应动力学，构建了BiVO4/CoOx/VO2/FeOOH复合光阳极。通过与硅光伏电池集成，形成了人工树叶装置，该装置在光电化学水分解过程中表现出优异的光电催化活性与长期运行稳定性。
Absstract of: CN122380299A
本发明提供一种基于基性‑超基性岩蛇纹石化反应的制氢方法。本方法以富含Fe的基性‑超基性岩石作为原料，在高温高压条件下与海水发生蛇纹石化反应，制备氢气。本发明通过利用蛇纹石化反应在特定条件下的高效制氢特性，解决了目前氢能产业中制氢成本高、效率低以及环境友好性不足的问题。蛇纹石化反应，作为一种自然发生的矿物转变过程，其在特定的地质条件下可以释放氢气，这为我们提供了一种全新的、环境友好的制氢途径，有助于对天然氢气藏的勘探和开发，可以更加有效地利用地球内部的能源资源，推动氢能产业的可持续发展。
Absstract of: CN122377502A
0001 本发明公开了一种负载钯的氧化钒掺杂氮碳材料及其制备方法和应用，制备方法为：S1、按质量比95:3‑7将锌盐和钒盐溶解于复合溶剂内，然后加入1H‑1,2,3‑三氮唑形成悬浮液A，将得到的悬浮液A连续搅拌反应后，离心、洗涤、干燥得到Zn/V‑MET‑6产物；S2、将Zn/V‑MET‑6于管式炉中在850℃‑1000℃下煅烧1h‑4h，然后冷却至室温得到氧化钒掺杂氮碳；S3、将氧化钒掺杂氮碳与、水、四氯钯酸钠搅拌混合均匀，后加入硼氢化钠还原剂，还原反应结束后，得到悬浮液B；将得到的悬浮液B进行离心、洗涤、烘干，得到负载钯的氧化钒掺杂氮碳材料；该催化剂将Pd纳米颗粒负载在载体中，还原后得到多孔复合材料，稳定性好，且催化甲酸分解的性能优异。
Absstract of: CN122382604A
0001 本发明提供一种基于磁场水热合成无定形高熵氢氧化物负载铂团簇的析氢催化剂及其制备方法，属于电催化制氢技术领域。该催化剂以泡沫镍钼为基底，浸没在含钴、铁、铈的硝酸盐溶液中水热反应同时外加均匀磁场合成无定形高熵氢氧化物，然后将其在氯铂酸钾溶液中浸渍，铂团簇负载于高熵氢氧化物之上并且形成了Pt‑O‑M(M=Co、Fe、Ce、Ni、Mo)桥键。得到的电催化剂具有较高的氢析出活性，在长期碱性大电流密度下具有长久的稳定性，且催化剂贵金属铂负载量低，因此具有较低的成本和巨大的应用潜力。
Nº publicación: CN122382620A 14/07/2026
Applicant:
北京大学
Absstract of: CN122382620A
本发明属于电化学催化材料技术领域，具体涉及一种酸性甲醇氧化‑析氢耦合用铂基高熵合金催化剂，包括碳纳米管载体，以及负载于所述载体上的铂基高熵合金纳米晶颗粒；其中，所述铂基高熵合金包括Pt、Fe、Co、Ni、V、Mn、Cr和Ti，各元素的原子百分比分别为5%‑35%。本发明提供的铂基高熵合金催化剂同步实现了酸性条件下双功能催化活性、结构稳定性及工业化生产可行性的提升。
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