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824
results.
Updated on
06/10/2025 [06:57:00]
Results 675 to 700 of 824
Absstract of: EP4603181A1
The invention provides a novel and efficient catalyst for HER composed of Ru nanoparticles dispersed over a support consisting of titanium oxynitride and high surface area carbon material, such as graphene oxide, (TiON-C) with a particularly low Ru loading of only 6 wt.%. In an alkaline electrolyte, the Ru/TiON-C composite significantly surpasses the HER performance of the Ru/C analog. More importantly, Ru/TiON-C is both intrinsically (nearly 3 times higher turnover frequency) and practically (4 times higher mass activity) better performing HER catalyst than the commercial Pt/C benchmark.
Absstract of: EP4603447A1
Method for producing a hydrogen product from ammonia, comprising the steps of:- Providing an ammonia feed stream;- Passing the ammonia feed stream to at least one ammonia pre-cracking reactor for producing a partly converted ammonia feed stream comprising ammonia, hydrogen and nitrogen by a pre-cracking reaction, said pre-cracking reactor comprising a pre-cracking catalyst bed comprising from 20 wt% to 60 wt% of nickel, preferably from 25 wt% to 50 wt% of nickel as a pre-cracking catalytically active material,- Passing the partly converted ammonia feed stream to an ammonia cracking reactor for producing an effluent gas stream comprising hydrogen and nitrogen and optionally also unconverted ammonia by a cracking reaction, said cracking reactor comprising a cracking catalyst bed comprising from 10 wt% to 20 wt% of nickel as a cracking catalytically active material.
Absstract of: WO2024081205A1
A composition that produces hydrogen includes a nanoparticle or plurality of nanoparticles; an external source of electrons such as an electrogenic bacterium or a plurality of electrogenic bacteria and a carbon source; and an aqueous medium. The nanoparticles and the aqueous medium are combined in a mixture; upon exposure to electromagnetic radiation with a wavelength in the absorption profile of the nanoparticles, the nanoparticles generate an electron that can reduce a proton in the aqueous medium; and the source of electrons is capable of reducing the nanoparticles. The nanoparticles may comprise cadmium chalcogenide or water-soluble cadmium chalcogenide quantum dots. The electrogenic bacterium or bacteria may comprise Shewanella oneidensis, a Geobacter species or any bacterium capable of extracellular electron transfer. The electromagnetic radiation has a wavelength of between approximately 400 and 1100 nanometers, or preferably 530 nm. The aqueous medium may be wastewater and the carbon source may comprise lactate.
Absstract of: AU2023359480A1
The invention relates to a bipolar plate for an electrolytic cell, the plate comprising, on at least one of its main faces: a first zone running circumferentially; a second zone running circumferentially so as to be bordered on the outside by the first zone; a third zone running circumferentially so as to be bordered on the outside by the second zone, the various zones being arranged on the periphery of the associated main face. The invention also relates to the corresponding cell, electrolyzer cell and assembly method.
Absstract of: AU2023359478A1
The invention relates to a method for joining a stack of elements together, the method comprising the steps of: individually joining subassemblies of the elements together; joining the subassemblies together by arranging a joint between each subassembly to form the stack of elements; applying consecutive phases of heating and cooling to the stack of elements while applying at least one clamping action to the stack of elements between two different phases of heating and cooling.
Absstract of: AU2023390125A1
Catalyst ink formulas for the preparation of CCMs are described. The catalyst ink formulas comprise a catalyst, an ionomer, a solvent, and a porogen soluble in the solvent. The catalyst ink formula may also comprise an additive, such as an electron conductive polymer. The anode catalyst coating layer or both the anode and the cathode catalyst coating layers prepared from the catalyst ink formula comprises uniformly distributed nanopores that allow easy gas removal and uniform water feed distribution, which will avoid or reduce the direct energy losses for the electrolyzers. Catalyst coated membranes and methods of making a catalyst coated membranes are also described.
Absstract of: WO2024081426A2
The present disclosure relates to circuits for connecting components of a hydrogen plant to a power grid to power the components in an efficient manner. In one implementation, power-side alternate current (AC) to direct current (DC) converters may be connected to a source power grid without the need for an isolation transformer by providing separate buses between the power-side AC-DC converters and load-side DC-DC converters instead of a shared DC bus between the converters. Other implementations for connecting components of a hydrogen plant to a power grid may include an adjustable transformer, such as a tappable transformer or an autotransformer, to connect any number of auxiliary loads of the plant to the power grid. The adjustable transformer may provide for various types of auxiliary load devices to connect to the power provided by the transformer at the same time, including both three-phase devices and one-phase devices.
Absstract of: EP4603490A1
The purpose of the present invention is to provide a compound capable of producing a polymer having excellent alkali durability, a polymer including the compound as a monomer, an electrolyte membrane having excellent alkali durability using the polymer, and a fuel cell and an electrolysis apparatus using the electrolyte membrane. A compound represented by the following Formula (1) and a polymer including the compound as a monomer. (X<1>-)2Ar<1>(-L<1>-R
Absstract of: US2025236972A1
Electrolyzer for production of hydrogen gas and comprising a stack of bipolar electrodes sandwiching ion-transporting membranes between each two of the bipolar electrodes. Each bipolar electrode comprises two metal plates welded together back-to-back forming a coolant compartment in between and having a respective anode surface and an opposite cathode surface, each of which is abutting one of the membranes. The plates are embossed with a major vertical channel and minor channels in a herringbone pattern for transport of oxygen and hydrogen gases. The embossed herringbone pattern is provided on both sides of the metal plates so as to also provide coolant channels in a herringbone pattern inside the coolant compartment.
Absstract of: US2025116022A1
A method of operating a solid oxide electrolysis cell (SOEC) system at partial load, the SOEC system including a plurality of branches each including at least one SOEC stack, includes determining a thermally neutral target voltage and cycling an ON phase and an OFF phase for each of the branches such that the SOEC system operates at an average operating power equal to a chosen percentage of the operating power at the thermally neutral target voltage. In the ON phase, the SOEC stacks in a given branch operate at the thermally neutral target voltage, and in the OFF phase, the SOEC stacks in the given branch are unloaded to an open circuit voltage and operate at 0% of rated power. The frequency of OFF phases for each branch is determined such that stronger or healthier branches have a lower frequency of OFF cycles than weaker or less healthy branches.
Absstract of: US2023243054A1
A separator for alkaline electrolysis comprising a porous support (10) and a first (20b) and second (30b) porous layer provided on respectively one side and the other side of the porous support, characterized in that the porous support has a thickness (d1) of 150 μm or less and the total thickness (d2) of the separator is less than 250 μm. Also a method is disclosed wherewith such a separator may be prepared.
Absstract of: MX2025001242A
The invention relates to a method for heating a furnace comprising radiant tubes and being able to thermally treat a running steel strip comprising the steps of: i. supplying at least one of said radiant tubes with H<sub>2</sub> and O<sub>2</sub> such that said H<sub>2</sub> and said O<sub>2</sub> get combined into heat and steam, ii. recovering said steam from said at least one of said radiant tubes, iii. electrolysing said steam so as to produce H<sub>2</sub> and O<sub>2</sub>, iv. supplying at least one of said radiant tubes with said H<sub>2</sub> and O<sub>2</sub> produced in step iii, such that they get combined into heat and steam.
Absstract of: CN119677896A
In one embodiment, discussed herein is a method of producing hydrogen, the method comprising: (a) providing an electrochemical reactor having an anode, a cathode, and a membrane between the anode and the cathode, where the membrane is both electronically and ionically conductive; (b) introducing a first stream to the anode, wherein the first stream comprises ammonia; (c) introducing an oxidizing agent to the anode; and (d) introducing a second stream to the cathode, wherein the second stream comprises water and provides a reducing environment to the cathode; wherein the hydrogen is generated from water in an electrochemical manner; wherein the first stream and the second stream are separated by the membrane; and wherein the oxidant and the second stream are separated by the membrane.
Absstract of: WO2025174066A1
The present application relates to a plasmonic phenomenon-based symmetric ammonia electrolysis system and an ammonia electrolysis method using same. A hybrid electrode, according to embodiments of the present application and the symmetric ammonia electrolysis system comprising same, may reactivate the surface of a catalyst by utilizing plasmonic phenomena during an electrochemical reaction by using a plasmonic-active electrode (antenna-reactor) composite electrode.
Absstract of: KR20250124598A
본원 발명은 전극 일체형 다공성 확산체의 제조방법 및 이의 용도에 대한 것이으로 보다 구체적으로는 촉매와 이오노머를 혼합하는 촉매-이오노머 혼합물 제조 단계; 상기 촉매-이오노머 혼합물을 초음파를 이용하여 1차 분산물을 제조하는 초음파 분산단계; 및 상기 1차 분산물을 다공성 확산체의 표면에 초음파 분산 노즐을 이용하여 스프레이 분사하는 단계를 포함하는 전극 일체형 다공성 확산체의 제조방법 및 이로부터 제조된 전극 일체형 다공성 확산체를 이용한 수전해 장치에 대한 것이다. 본원 발명은 촉매와 고분자 이오노머의 혼합물의 분산도를 높일 수 있고, 이에 따라 고분자 이오노머의 함량을 낮출 수 있으므로, 결과적으로 촉매활성을 높여 PEM 수전해의 성능을 대폭 향상시킬 수 있는 장점이 있다.
Absstract of: CN120380621A
A solid oxide cell stack has a combined flow distributor and contact enabler made of a pressed metal foil with diversion structures and contact regions between interconnect layers and cell layers in the stack.
Absstract of: EP4603183A1
According to the embodiments of the present disclosure, an ammonia decomposition catalyst may be prepared by performing heat treatment on alumina, a lanthanum compound and a cerium compound in a reducing gas atmosphere to form a composite oxide on an alumina support, and supporting an active metal including ruthenium on the composite oxide. According to further embodiments, the present disclosure provides a catalyst with improved dispersibility which is particularly suitable for ammonia decomposition.
Absstract of: CN120505642A
本发明公开的用于撬装碱性水电解制氢系统的辅助设备，包括箱体，箱体内设置有用于供电的配电柜间，配电柜间通过线路与设置在箱体内的水处理设备间、空压机设备间和输出设备间分别连接；箱体相对配电柜间位置设有连接外部电源的电源输入口；箱体相对水处理设备间位置设有水源输入口；箱体相对空压机设备间位置设有空气输入口；箱体相对输出设备间位置设有仪表气输出口、原料水输出口、碱液输出口和吹扫气输出口。本发明将纯水制备系统、配碱系统、压缩空气系统、氮气系统进行集成，提高了空间利用率，降低了辅助设备的占用空间。
Absstract of: WO2024257430A1
The present invention reduces unburned ammonia when ammonia is used as fuel. A combustor (10) comprises: a burner (11) that injects fuel containing ammonia into a combustion space (S); and a refractory material (12) that defines at least a portion of the combustion space (S). The refractory material (12) blocks passage of combustion gas, and the refractory material (12) contains a catalyst (C), which decomposes ammonia into hydrogen and nitrogen, on a surface (1b) that defines at least a portion of the combustion space (S).
Absstract of: CN120505638A
本申请涉及一种海水供水碱性电解水制氢装置，涉及电解制氢的领域，包括有膜电极组件，所述膜电极组件的两侧设置有气体收集腔室，所述气体收集腔室背离所述膜电极组件的一侧设置有进液组件，所述进液组件与所述气体收集腔室之间设置有气化部件，所述气化部件能够将通过其的液体气化进入到所述膜电极组件的内部。本申请具有减少电极的腐蚀，钙镁离子堵塞电极的情况的效果。
Absstract of: CN120505650A
本发明公开了多级环形质子交换膜电解槽双极板流场结构，包括板体，板体的中心位置同心设置有多级环形流道，多级环形流道是以双极板中心点为圆心，相邻环形流道之间均采用通道脊分隔；沿直径方向设置有中央通道，中央通道贯穿所有环形流道并且与每一个环形流道互通，中央通道以一级环形流道圆心沿直径方向呈轴对称分布；中央通道的一端为进水口，中央通道的另一端为出水口；板体的四周边沿间隔开有若干螺栓孔，板体一侧面设有电源接口。本发明属于质子交换膜电解水制氢技术领域，避免在转弯处发生速度和电流密度的突变，能够显著降低流场中的压力分布，减少蠕动本送水做功，提高电解槽性能。
Absstract of: CN120505635A
本发明申请公开了一种PEM电解槽，涉及电解槽技术领域，PEM电解槽，包括端板组件、极板组件和膜电极，其中极板组件、膜电极上设有与端板组件的分流通道分别连通的阳极侧进出水通道、阴极侧进出水通道。本申请的PEM电解槽所包含的部件少，结构简单，加工成本较低，可以保证具备良好的密封性，同时其可以从两侧的端板分别进水，则进水量更大，具备良好的散热性能，能够均匀分配反应物、生产物，提高了电解效率。
Absstract of: CN120504436A
本发明涉及富氢水机技术领域，具体为一种便于更换物理式制氢机滤芯的设备，包括机体底板、腔体、滤芯安装筒、滤芯，所述腔体内部设有五组圆形滑道，后侧中心处具有螺杆，圆形滑道中设有内推板，内推板具有五组伸出臂，每组伸出臂端部都具有伸出圆板，内推板中心具有中心孔，内推板具有五组安装孔一，每组伸出圆板都具有安装孔二，伸出圆板安装在圆形滑道内，安装孔一内分别设有传动齿轮轴，中心孔内设有驱动齿轮轴，传动齿轮轴一端具有齿轮一，另一端具有链轮一，驱动齿轮轴一端具有齿轮二，另一端具有圆形卡板，驱动齿轮轴中心处具有螺纹孔一，螺纹孔一安装在螺杆上；本发明可进行更换滤芯，保证滤芯的顺利脱离与安装。
Absstract of: CN120505651A
本发明公开的碱性电解槽用流道密封双极板，通过设置相互交错的多通道氢碱、氧碱气道孔，氢碱、氧碱气道槽，碱液阴极、阳极进液孔和的碱液阴极、阳极进液槽，可为各电解小室提供多个交错分布碱液流通分配通道，使碱液快速充满各个电解小室，确保了各处碱液浓度的均匀一致性，电解小室内的气液两相流场分布更加均匀，上升的气泡能以最快的速度在最近的出口快速排出，降低了气体集聚，消除了电解小室气体死区，降低了碱液电阻电压降，从而降低了碱性电解槽的电解能耗，提高了电解效率；同时通过设置相应流道密封结构，杜绝了各电解小室中氢气、氧气的互串，从而提高了碱性电解槽的氢气、氧气纯度，保障碱性电解槽高安全性、长寿命稳定运行。
Nº publicación: CN120505656A 19/08/2025
Applicant:
中国石油天然气股份有限公司
Absstract of: CN120505656A
本发明提供了一种电解水催化剂浆料及其制备方法与膜电极及电化学装置和电解水制氢方法。该制备方法包括：将催化剂、树脂、溶剂混合，得到中间溶液；将造孔剂加入所述中间溶液中搅拌，得到电解水催化剂浆料；造孔剂包括碳材料，搅拌的转速小于等于1000转/分钟，所述搅拌的时间小于等于30min。本发明还提供了上述制备方法得到的电解水催化剂浆料，由该电解水催化剂浆料制成的膜电极，包含该膜电极的电化学装置和电解水制氢的方法。上述电解水催化剂浆料可以通过添加造孔剂获得多孔催化层、同时避免造孔剂去除过程引起的催化剂流失，提高膜电极的催化性能和耐久性。
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