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Results 900 to 925 of 999
Absstract of: AU2023343511A1
The problem addressed by the present invention is that of specifying a process for producing lithium hydroxide which is very energy efficient. The process shall especially operate without consumption of thermal energy. The process shall be able to handle, as raw material, Li-containing waters generated during digestion of spent lithium-ion batteries. The LiOH produced by the process shall have a high purity sufficient for direct manufacture of new LIB. The process shall achieve a high throughput and have small footprint in order that it can be combined with existing processes for workup of used LIB/for production of new LIB to form a closed, continuous production loop. The process according to the invention is an electrolytic membrane process operating with a LiSICon membrane. It is a special aspect of the process that the electrolysis is operated up to the precipitation limit of the lithium hydroxide.
Absstract of: AU2023343512A1
The present invention relates to the electrochemical production of hydrogen and lithium hydroxide from Li+-containing water using a LiSICon membrane. The problem addressed by the present invention is that of specifying a process which is operable economically even on an industrial scale. The process shall especially exhibit a high energy efficiency and achieve a long service life of the membrane even when the employed feed contains impurities harmful to LiSICon materials. A particular aspect of the process is that the cell simultaneously separates off the lithium via the membrane and effects electrolysis of water. An essential aspect of the process is that the electrochemical process is performed in a basic environment, more precisely at pH 9 to 13. The pH is adjusted by addition of a basic compound to the feed.
Absstract of: AU2023342258A1
The problem addressed by the present invention is that of specifying a process for electrochemical production of LiOH from Li
Absstract of: US2025135397A1
Hydrogen gas purifier electrochemical cells, systems for purifying hydrogen gas, and methods for purifying hydrogen gas are provided. The cells, systems, and methods employ double membrane electrode (DMEA) electrochemical cells that enhance purification while avoiding the complexity and cost of conventional cells. The purity of the hydrogen gas produced by the cells, systems, and methods can be enhanced by removing at least some intermediate gas impurities from the cells. The purity of the hydrogen gas produced by the cells, systems, and methods can also be enhanced be introducing hydrogen gas to the cells to replenish any lost hydrogen. Water electrolyzing electrochemical cells and methods of electrolyzing water to produce hydrogen gas are also disclosed.
Absstract of: WO2025088185A1
The invention relates to a method of operating a solid oxide electrolysis cell (SOEC) stack for producing hydrogen, and a system for carrying out the method, said SOEC stack comprising at least one solid oxide electrolysis cell (SOEC), said at least one SOEC comprising an electrolyte layer interposed between a fuel-side and an oxy-side, the method comprising transient operation, in which the transient operation comprises: - providing a feed gas comprising ammonia; - supplying at least a portion of said feed gas comprising ammonia to a guard bed reactor, said guard bed reactor comprising a catalyst active in the cracking of ammonia to nitrogen and hydrogen; and withdrawing from said guard bed reactor a forming gas comprising nitrogen and hydrogen; - supplying at least a portion of the intermediate gas comprising nitrogen and hydrogen to the fuel-side of the at least one of the solid oxide electrolysis cells (SOECs) of the SOEC stack; and withdrawing from said at least one of the SOECs of the SOEC stack, a first fuel-side exit gas.
Absstract of: KR20250058602A
본 발명의 일 실시예에 따른 암모니아 분해 장치는, 암모니아가 공급되는 암모니아 공급부, 암모니아가 이동하면서 분해되는 분해 공간, 분해된 암모니아 분해가스가 배출되는 분해가스 배출부, 연료전지의 애노드 배가스가 공급되는 제1 배가스 공급부, 연료전지의 캐소드 배가스가 공급되는 제2 배가스 공급부, 상기 애노드 배가스와 상기 캐소드 배가스가 연소되는 연소 공간, 및 상기 연소 공간에서 연소된 배가스를 이동시키는 배가스 유로를 포함하고, 상기 분해 공간은 상기 연소 공간과 상기 배가스 유로 사이에 위치할 수 있다.
Absstract of: EP4545690A1
An electrolysis device of the present disclosure includes an electrolytic cell, an electrolyte supply unit, and an ion concentration adjustment unit. The electrolytic cell includes an anode chamber, a cathode chamber, and an ion exchange membrane disposed between the anode chamber and the cathode chamber. The electrolyte supply unit includes at least one tank accommodating an electrolyte, circulates a portion of the electrolyte as a first electrolyte between the at least one tank and the anode chamber, and circulates another portion of the electrolyte as a second electrolyte between the at least one tank and the cathode chamber. The ion concentration adjustment unit supplies an adjustment solution for adjusting a hydrogen ion concentration to the electrolyte supply unit.
Absstract of: EP4545192A2
A system (1) for generating hydrogen gas comprises a reaction vessel (101) containing an aqueous solution (102) and a cathode (105) and an anode (107) each positioned at least partly in the reaction vessel (101). The system (1) comprises first and second ultrasonic transducers (215-220) which emit ultrasonic waves in the direction of the cathode (105) and the anode (107) respectively. Each ultrasonic transducer (215-220) is driven by a respective transducer driver (202) to optimise the operation of the system (1) for generating hydrogen gas by sonoelectrolysis.
Absstract of: EP4545479A1
Provided are a carbon nanotube molded body including carbon nanotubes, and a method of producing the same, wherein the carbon nanotube molded body has a specific surface area of 700 m<sup>2</sup>/g or more, the carbon nanotube molded body has a pore distribution from 3 to 15 nm, the carbon nanotube molded body has a tensile strength of 45 MPa or more, and the carbon nanotube molded body has a Young's modulus of 1600 MPa or more. Also provided are an electrochemical water-splitting electrode comprising the carbon nanotube molded body and platinum supported on the carbon nanotube molded body, a method of producing the same, and an electrochemical water-splitting apparatus comprising the electrochemical water-splitting electrode.
Absstract of: EP4545687A1
An object of the present invention is to provide an electrolyte membrane having an excellent joining property between an electrolyte membrane and a catalyst layer. The present invention mainly relates to an electrolyte membrane including a layer (A) containing a polymer electrolyte, and a layer (B) on at least one of the faces of the layer (A), wherein porosity (X1) in an interface region of the layer (B), on the layer (A) side, is higher than porosity (X2) in another interface region of the layer (B), on the opposite side to the layer (A).
Absstract of: EP4545689A1
The present invention relates to a method for operating a Power-To-Hydrogen system (10) comprising at least one electricity source (1), at least one electrolyzer (2), a first hydrogen storage device (3) with permanent availability and a hydrogen transfer station (4). The hydrogen transfer station (4) is adapted and configured to be coupled temporarily to one or multiple second hydrogen storage devices (5,51,52) with time-dependent availability for a transfer of hydrogen to the one or multiple second hydrogen storage devices (5,51,52). A hydrogen production rate (P(t)) of the electrolyzer (2) is controlled based on a forecasted total available hydrogen storage capacity, wherein the forecasted total available hydrogen storage capacity comprises a storage capacity (X) of the first hydrogen storage device (3) and a time-dependent storage capacity of the second hydrogen storage device (5,51,52) provided by a hydrogen storage capacity model (C(t)).The method according to invention allows for an optimized hydrogen production planning and thus improves both profitability and sustainability of the Power-To-Hydrogen system.
Absstract of: WO2025089546A1
An aspect of the present invention provides a system for producing sodium hypochlorite and hydrogen gas, comprising: a desalination unit for desalinating seawater to generate a fresh water stream and a concentrated water stream; a crystallization unit for crystallizing the concentrated water stream to generate a solid raw material containing sodium chloride; an electrolysis unit for electrolyzing reactants, derived from the solid raw material and water, to generate sodium hypochlorite and by-product gas; and a gas purification unit for purifying the by-product gas to generate hydrogen gas.
Absstract of: EP4546471A1
A catalyst electrode according to an embodiment of the present disclosure includes a metal layer; and a catalyst layer formed on the metal layer, wherein the catalyst layer includes iridium and palladium.
Absstract of: AU2023288544A1
Disclosed herein are low voltage electrolyzers and methods and systems of using those low voltage electrolyzers. Specifically, the electrolyzers can include a pH buffer in the catholyte and/or anolyte of the electrolyzer and generating a gas at the cathode or anode that is consumed at the other of the cathode or anode to reduce the open-circuit potential.
Absstract of: US2025129001A1
In a process for producing methanol, a synthesis gas that has been recovered from biomass is fed to a methanol synthesis apparatus. In a main operating mode in which sufficient electrical power is available for electrolytic hydrogen recovery, correspondingly electrolytically recovered hydrogen is fed to the methanol synthesis apparatus. In a secondary operating mode in which insufficient electrical power is available for electrolytic production of hydrogen, a tail gas that arises from a biogas recovered from a biomass on removal of the synthesis gas is fed to a generator in order to provide electrical power for apparatuses involved in the process.
Absstract of: CN119497764A
The present invention relates to a method for operating a high temperature solid oxide electrolysis system suitable for converting a fuel stream into a product stream and a system for implementing the method. The method includes drying the moist purge gas and using the waste purge gas as a regeneration gas in the drying unit.
Absstract of: US2024106008A1
An energy apparatus comprising at least one functional unit including a first cell comprising a first cell electrode and at least one first cell opening for a first cell aqueous liquid and for a first cell gas. The first cell electrode comprises an iron-based electrode; a second cell comprising a second cell electrode and at least one second cell opening for a second cell aqueous liquid and for a second cell gas. The second cell electrode comprises at least one metal comprising 60-99.9 at. % nickel, and 0.1-35 at. % iron and a separator. The first cell and the second cell share the separator which is configured to block transport of at least one of O2 and H2 from one cell to another while having permeability for at least one of hydroxide ions (OH−) monovalent sodium (Na+), monovalent lithium (Li+) and monovalent potassium (K+).
Absstract of: US2024139707A1
Biogenic activated carbon compositions disclosed herein comprise at least 55 wt % carbon, some of which may be present as graphene, and have high surface areas, such as Iodine Numbers of greater than 2000. Some embodiments provide biogenic activated carbon that is responsive to a magnetic field. A continuous process for producing biogenic activated carbon comprises countercurrently contacting, by mechanical means, a feedstock with a vapor stream comprising an activation agent including water and/or carbon dioxide; removing vapor from the reaction zone; recycling at least some of the separated vapor stream, or a thermally treated form thereof, to an inlet of the reaction zone(s) and/or to the feedstock; and recovering solids from the reaction zone(s) as biogenic activated carbon. Methods of using the biogenic activated carbon are disclosed.
Absstract of: EP4545476A1
Process (2) for the production of an enhanced fuel gas (4) containing at least hydrogen gas from a fuel stream, in particular from an ammonia fuel stream (6). Said process comprises the following steps:- providing the fuel stream (6) (S100);- providing a condensable medium (8), preferably water steam (8), to a cracker unit (10);- at least one step of performing an endothermic cracking reaction of the fuel stream (6) in the cracker unit comprising at least one catalyst suitable for cracking said fuelstream (6), so as to produce an at least partially cracked fuel stream as said enhanced fuel gas (4) (S300); and- condensing at least partially said condensable medium (8) to provide said heat for the endothermic cracking reaction of the fuel stream (6).
Absstract of: CN119897143A
本发明属于光催化剂技术领域，具体公开了一种掺磷氮化碳复合CdS@CdIn2S4复合光催化剂及其制备方法和应用，将尿素通过热聚合法重结晶制备超薄氮化碳，再将P元素掺入氮化碳(PCN)中去调节氮化碳的能带结构，再将PCN与CdS@CdIn2S4(CSCIS)复合，形成PCN/CdS@CdIn2S4三元异质材料(PCNCSCIS)，二维纳米片状的CdS@CdIn2S4与超薄PCN复合后，形成了大量的纳米级接触界面，构建了丰富的异质结构。这种结构不仅增强了光的散射和折射几率，显著提升了光利用率，还通过形成双Z型异质结机制，有效促进了光生载流子的分离与传输，从而提高了光催化性能，产氢效率高达7614μmol·g‑1·h‑1。
Absstract of: CN119898169A
本发明涉及电解雾化技术领域，公开了一种氢氧分离且雾化效果较好的车载式氢雾设备，其包括用于承载水体的杯体(100)、固定组件(300)、电解组件(301)、雾化组件及盖体(200)，其中，第一通道(300b)与第一开口(200a)连通，氢气经第一通道(300b)及第一开口(200a)输出，第二通道(300c)与第二开口(200b)连通，气雾经第二通道(300c)及第二开口(200b)输出。
Absstract of: TW202412369A
An electrochemical cell is disclosed having a porous metal support, at least one layer of a first electrode on the porous metal support, a first electron-blocking electrolyte layer of rare earth doped zirconia on the at least one layer of the first electrode, and a second bulk electrolyte layer of rare earth doped ceria on the first electron-blocking electrolyte layer. The first electron-blocking electrolyte layer of rare earth doped zirconia may have a thickness of 0.5 mum or greater, and the second bulk electrolyte layer of rare earth doped ceria may have a thickness of 4 mum or greater.
Absstract of: WO2025087088A1
Disclosed in the present application are a catalyst, and a preparation method therefor and the use thereof. By using a chromium-manganese co-doped ruthenium-based catalyst, in cooperation with a coordination dispersion effect of a chelating agent structure, the catalyst provided in the present application effectively inhibits sintering agglomeration of chromium, manganese and ruthenium components, and the prepared catalyst has better uniformity. Chromium and manganese regulate and control a d electron center of a ruthenium active site at the same time and serve as a high-corrosion resistance protective layer, such that when an OER reaction is carried out under a strong-acidity electrolyte system, the catalyst can effectively maintain high-activity characteristics thereof, long-cycle stable operation is achieved, and the use cycle can reach 2000 hours. The catalyst serving as a high-performance acidic oxygen evolution reaction electrocatalyst can be used for stably and efficiently carrying out an oxygen evolution reaction (OER) in an acidic electrolyte environment, and can be used as an anode material for water electrolysis hydrogen production in a proton conduction polymer electrolysis hydrogen production electrolytic tank, thereby solving the problems of few types, low performance and a short service life of existing acidic oxygen evolution catalysts.
Absstract of: CN119897123A
本发明属于光催化材料技术领域，具体涉及一种Cu掺杂MnMoO4光催化剂及其制备方法和应用。制备方法是将五水硫酸铜研磨入MnMoO4的前驱体中，通过改变铜源的摩尔比得到不同摩尔比例的MnMoO4‑x％Cu复合材料，其可以应用于光催化分解水析氢领域。相较于现有的光催化剂，本发明Cu掺杂MnMoO4作为催化剂可控性良好，有利于进一步提升载流子的分离效率，应用于光催化分解水有较高的产氢量和较好的稳定性。本发明绿色环保、方法简单，操作方便，材料制备成本低廉，符合目前所倡导的绿色环保理念，具有广阔的应用市场前景。
Nº publicación: CN119902434A 29/04/2025
Applicant:
国网辽宁省电力有限公司电力科学研究院东北大学国家电网有限公司
Absstract of: CN119902434A
本发明公开一种兼顾新能源消纳的多类型电制氢优化控制方法，涉及控制策略技术领域。本发明根据不同电解技术的动态响应速度差异，将其分别匹配不同波动特征的新能源发电负荷，从而实现差别化利用，提高了工作效率，优化协同运行。对多类型电制氢系统的容量配置进行了优化，以增强制氢装置的运行灵活性，使其与新能源发电的波动特性相适应。改善新能源发电与电解制氢过程之间的动态耦合效果，为高效可再生能源制氢技术的发展提供新的思路和实践依据，助力实现更为可持续的能源利用模式。
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