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アンモニア分解用触媒及びこの製造方法

Resumen de: CN120418004A

The present invention relates to an ammonia decomposition catalyst and a method for producing the same, and more particularly, to an ammonia decomposition catalyst comprising alumina (Al2O3), cerium (Ce), lanthanum (La), ruthenium (Ru), and potassium (K), and a method for producing the same.

AEM电解槽

Resumen de: CN115948757A

The invention provides an electrolytic bath which comprises a cathode end plate, a cathode insulating layer, an electrolytic unit, an anode insulating layer and an anode end plate which are sequentially arranged in the same direction, each small electrolysis chamber comprises a cathode plate, a cathode sealing ring, a cathode gas diffusion layer, a diaphragm, an anode gas diffusion layer and an anode plate which are sequentially arranged in the same direction, the cathode plate and the anode plate at the series connection part between the small electrolysis chambers are combined to form a bipolar plate, the cathode plate comprises a cathode surface, the anode plate comprises an anode surface, and the bipolar plate comprises a cathode surface and an anode surface; a concave area and an outer frame area are arranged on the cathode surface and the anode surface, the outer frame area is arranged around the concave area, a plurality of raised lines are arranged in the concave area, a diversion trench is formed between the raised lines, confluence trenches are arranged in the concave area at two ends of the diversion trench, and the confluence trenches are communicated with the diversion trench. According to the scheme, uniform diffusion of the electrolyte is realized.

Procédé de préparation d’une électrode activée électrochimiquement à base de MoS2 fluoré pour des réactions de réduction électrochimique

Resumen de: FR3162052A1

Procédé de préparation d’une électrode activée électrochimiquement pour des réactions de réduction électrochimique, ladite électrode comprenant au moins un matériau catalytique à base d’au moins un métal du groupe VIB fluoré, ledit procédé consiste à réaliser un traitement électrochimique oxydatif à une électrode comprenant au moins un matériau catalytique à base d’au moins un métal du groupe VIB fluoré.

Procédé de préparation d’une couche active d’électrode à base de MoS2 fluoré pour des réactions de réduction électrochimique

Resumen de: FR3162008A1

Procédé de préparation d’un matériau catalytique d’une électrode pour des réactions de réduction électrochimique, ledit matériau catalytique comprenant une phase active à base d’au moins un métal du groupe VIB et de fluor. Ledit procédé consiste en la mise en contact d’un matériau solide à base d’au moins un métal du groupe VIB sulfuré avec un gaz comprenant au moins du difluor, à une température comprise entre -50°C et 150°C, une durée comprise entre 15 secondes et 120 minutes, une concentration en difluor dans le gaz comprise entre 0,1 et 100% volume par rapport au volume total dudit gaz, une pression comprise 0,001 et 0,2 MPa, une P.P.H comprise entre 0,01 et 200 h-1.

Procédé de préparation d’une électrode activée électrochimiquement à base de MoS2 supporté pour des réactions de réduction électrochimique

Resumen de: FR3162053A1

Procédé de préparation d’une électrode activée électrochimiquement pour des réactions de réduction électrochimique, ladite électrode comprenant au moins un matériau catalytique à base d’au moins un métal du groupe VIB supporté sur un support électro conducteur, ledit procédé consiste à réaliser un traitement électrochimique à une électrode comprenant au moins un matériau catalytique à base d’au moins un métal du groupe VIB supporté sur un support électroconducteur. Ledit traitement électrochimique, réalisé par voltampérométrie cyclique (CV) ou chronoampérométrie (CA), consiste en une étape d’oxydation dans des conditions spécifiques.

수전해 응용을 위한 선택적 분리막 및 그 제조 방법

Resumen de: WO2024191979A1

A selective separator is described that comprises a porous polymeric separator and selective material on at least one outer surface. Selective material comprising a composite of ion exchange polymer and zirconium oxide particles (ZrO2) distributed throughout the ion exchange polymer may be applied as a liquid by a spray coating method. Selective separators made by methods described herein are suitable for use in alkaline water electrolysis applications.

Bipolar plate with a speed bump flow field that facilitates oxygen discharge

Resumen de: KR20250160699A

바이폴라 플레이트가 제공된다. 상기 바이폴라 플레이트는 유로가 형성된 판부;를 포함하고, 상기 유로에는 스피드 범프(speed bump)가 형성될 수 있다. 상기 유로는 양이온 교환막(PEM, Proton Exchange Membrane) 또는 막전극접합체(MEA, Membrane Electrode Assembly)에 대면하는 상기 판부의 일면에 트렌치(trench) 형상으로 형성될 수 있다. 상기 유로의 내측벽과 바닥면 중 적어도 하나로부터 돌출된 돌출부가 마련될 수 있다.

电化学系统

Resumen de: US2025354272A1

Provided is an electrochemical system comprising a water electrolysis stack with an anode and a cathode. The system includes a reaction fluid supply line that supplies a reaction fluid to the anode, a first gas-liquid separator located in the reaction fluid supply line to separate the reaction fluid into gaseous and liquid components, and a first filter part positioned upstream of the first gas-liquid separator to filter the reaction fluid. The system further includes a first circulation line that circulates the liquid reaction fluid from the anode back to the first gas-liquid separator. Additionally, a second gas-liquid separator in a discharged fluid discharge line is connected to the cathode, with a second circulation line configured to maintain the ionic purity of the discharged fluid. The system also includes a mechanism to monitor ionic conductivity and selectively control the operation of the water electrolysis stack based on detected ionic levels.

DIRECT COATING OF ANION EXCHANGE MEMBRANES WITH CATALYTICALLY ACTIVE MATERIAL

Resumen de: AU2025202787A1

Abstract The invention relates to the coating of anion exchange membranes (AEM) with catalytically active substances. The CCM thus obtained are used in electrochemical cells, especially for alkaline water electrolysis. It was an object of the invention to specify a process for producing a CCM by direct 5 coating which maintains the necessary planarity of the AEM and ideally avoids the use of lost films and eschews CMR substances. Swelling shall also be minimized. The process shall also be performable with fluorine-free ionomers. The invention is based on the finding that the addition of certain organic substances has the result that the AEM swells only to a small extent, if at all (antiswelling agent). It has surprisingly been found that substances suitable as antiswelling agents 10 are identifiable by their solubility behaviour, more particularly by their Hansen parameters. Fig. 4 accompanies the abstract Abstract The invention relates to the coating of anion exchange membranes (AEM) with catalytically active substances. The CCM thus obtained are used in electrochemical cells, especially for alkaline water 5 electrolysis. It was an object of the invention to specify a process for producing a CCM by direct coating which maintains the necessary planarity of the AEM and ideally avoids the use of lost films and eschews CMR substances. Swelling shall also be minimized. The process shall also be performable with fluorine-free ionomers. The invention is based on the finding that th

OXYGEN EVOLUTION REACTION CATALYST AND METHOD FOR ITS PREPARATION

Resumen de: AU2024276790A1

The specification describes a process for preparing an oxygen evolution reaction catalyst, comprising the steps of: (i) combining iridium powder and a peroxide salt to produce a powder mixture; (ii) carrying out thermal treatment on the powder mixture; (iii) dissolving the product from (ii) in water to produce a solution; (iv) reducing the pH of the solution from (iii) to affect a precipitation and form a solid and a supernatant; (v) separating the solid from the supernatant; and (vi) drying the solid. An oxygen evolution catalyst obtainable by the process is also described.

ELECTROLYTIC METHOD, ELECTROLYSIS CELL, AND SYSTEM

Resumen de: AU2024249829A1

The invention relates to an electrolytic method for producing carbon dioxide, having the following steps: a. anodically oxidizing hydrogen gas within an electrolysis cell, an acidic oxidation product being obtained; b. reacting the acidic oxidation product with an aqueous electrolyte solution within the electrolysis cell, an acidic aqueous solution being obtained; c. cathodically reducing water within the electrolysis cell, an alkaline aqueous solution and hydrogen gas being obtained; d. reacting the alkaline aqueous solution outside of the electrolysis cell with a gas which contains carbon dioxide, wherein the gas is air in particular, in order to obtain a carbonate-containing aqueous solution; and e. reacting the carbonate-containing alkaline aqueous solution with the acidic aqueous solution outside of the electrolysis cell in order to obtain dissolved carbon dioxide gas.

COATING OF ANION EXCHANGE MEMBRANES

Resumen de: AU2024245553A1

The invention relates to the coating of anion exchange membranes with catalytically active substances. The catalytically actively coated anion exchange membranes are used in electrochemical cells, especially for water electrolysis. The problem addressed by the invention is that of specifying a process for coating an anion exchange membrane which can be conducted at relatively low temperatures. This problem is solved by a swelling step. Aside from the swelling step and the processing temperature, the sequence of the process according to the invention resembles a decal process. However, the use of the partly liquid swelling agent means that the process according to the invention can be considered to be a wet process. The process enables the processing of anion-conducting polymers at moderate temperatures. The anion-conducting polymers may be present in the anion exchange membrane and/or in the composition that is applied to the anion exchange membrane. The advantage of the process according to the invention is that it can be conducted at comparatively low temperatures, namely below 100°C.

HYDROGEN ECOSYSTEM FOR UPSTREAM OIL PRODUCTION

Resumen de: WO2025235123A2

A hydrogen ecosystem for producing oil and gas is described, where land local to an oil field hosts each of the following components: one or more producing oil wells, one or more non -producing oil wells, and optionally one or more new wells; a wind farm or a solar farm, or both, for generating electricity; said wind farm or a solar farm, or both, electrically connected to an electrolyzer for converting water to hydrogen; said electrolyzer fluidly connected to a compressor for producing compressed hydrogen; said compressor fluidly connected to a high pressure injection line for injecting said compressed hydrogen into a hydrogen storage well (HSW), said hydrogen storage well being a non-producing well that has been plugged and fitted for hydrogen storage; said HSW fluidly connected to a pressure reducing regulator for producing uncompressed hydrogen; said pressure reducing regulator fluidly connected to a pipeline for delivering said uncompressed hydrogen to a hydrogen power unit for converting said uncompressed hydrogen to electricity; said electricity electrically connected to oil production equipment for producing hydrocarbons from said oil field.

WATER SPLITTING SYSTEM AND METHOD

Resumen de: WO2025235613A1

The metal organic framework (MOF)-based light-driven water-splitting system 100 includes a water oxidation catalyst 102 coupled with a MOF substance 104. In a specific example, the MOF substance 104 may include MIL-142. Fe3O nodes of the MIL-142 may absorb visible light, leading to charge separation. The water oxidation catalyst 104 includes a trans-Ru(R-tpy)(Qc)(H2O)+ scaffold. The MOF substance 104 may be coupled to a conducting support 106.

ELECTRICALLY ISOLATED ELECTROCHEMICAL CELL AND METHOD OF MANUFACTURING THE SAME

Resumen de: WO2025235885A1

The present application relates to components for use in an electrolysis cell and/or stack comprising features, geometry, and materials to overcome prior art limitations related to cell electrical isolation, fluid sealing, and high speed manufacturing. The electrolysis cell comprises a membrane, an anode, a cathode, an anode flow field, a cathode flow field, and a bipolar plate assembly comprising an embedded hydrogen seal and both conductive and non-conductive areas. The components are cut using two-dimensional patterns from substantially flat raw materials capable of being sourced in roll form. These substantially two-dimensional components are processed to create a fully unitized, three- dimensional electrolysis cell with a hermetically sealed cathode chamber.

ALUMINUM-WATER-AIR-REACTOR (AWAR) DEVICES AND SYSTEMS, AND METHODS OF USE THEREOF

Resumen de: WO2025235887A1

Provided herein are methods and systems for collecting energy from aluminum-water reactions and/or powering processes using energy collected from aluminum-water reactions. The methods and systems described herein substantially convert the embodied energy of aluminum to usable energy, in part, by combusting hydrogen produced by the aluminum-water reaction in the generation of superheated steam.

GAS PRODUCTION SYSTEMS

Resumen de: WO2025235469A1

A gas production system includes an electrolyzer configured to provide an electrolysis gas including a mixture of hydrogen gas and oxygen gas. The gas production system includes a housing having a housing inlet configured to receive the electrolysis gas from the electrolyzer. The gas production system includes a catalyst member disposed in the housing. The catalyst member includes a first catalyst bed configured to receive the electrolysis gas from the housing inlet. The first catalyst bed includes a first catalyst material. The catalyst member includes a second catalyst bed separated from the housing inlet by the first catalyst bed and configured to receive the electrolysis gas from the first catalyst bed. The second catalyst bed includes a second catalyst material different from the first catalyst material.

METHOD FOR PRODUCING CATALYST

Resumen de: WO2025234874A1

The invention relates to a method for producing a catalyst, in particular for use in water electrolysis. The catalyst prepared from nickel, iron and/or cobalt precursors via hydrothermal synthesis is utilised in the membrane electrode assembly for anion exchange membrane water electrolysis.

SYSTEM AND METHOD FOR USING BOILER HOT FLUE GAS TO DECOMPOSE HYDROGEN IODIDE

Resumen de: WO2025232928A1

Disclosed in the present invention are a system and method for using boiler hot flue gas to decompose hydrogen iodide. The system comprises a mixed liquid container, a mixed liquid pump, a pump outlet regulating valve, a boiler high-temperature flue gas zone and a temperature control valve, wherein an outlet of the mixed liquid container is connected to an inlet of the mixed liquid pump; an outlet of the mixed liquid pump is connected to an inlet of the pump outlet regulating valve; an outlet of the pump outlet regulating valve is connected to an inlet of the boiler high-temperature flue gas zone; and an outlet of the boiler high-temperature flue gas zone is connected to an inlet of the temperature control valve. In the present invention, heat is obtained from flue gas from a power station boiler; it is only necessary to place a hydrogen iodide heating device in a high-temperature zone of a furnace of the boiler, and two sides of the hydrogen iodide heating device are at low pressure, thereby greatly improving the safety; in addition, obtaining heat directly from the flue gas is more economical than obtaining heat via steam and electric energy.

LOW-HYDROGEN-PERMEABILITY PROTON EXCHANGE MEMBRANE, AND PREPARATION METHOD THEREFOR AND USE THEREOF

Resumen de: WO2025232473A1

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 membrane 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.

MEMBRANE-FREE CHEMICAL-LOOPING CYCLIC WATER ELECTROLYSIS HYDROGEN PRODUCTION DEVICE AND METHOD BASED ON INTRINSIC SAFETY

Resumen de: WO2025232414A1

The present invention relates to a membrane-free chemical-looping cyclic water electrolysis hydrogen production device and method based on intrinsic safety. The device comprises two electrolytic cells, a normal-temperature alkali liquor buffer tank, a high-temperature alkali liquor buffer tank, an oxygen separation device, a hydrogen separation device, a storage tank, and an external power supply, wherein at least one electrolytic chamber is formed in each electrolytic cell, an anode plate and a cathode plate are provided in each electrolytic chamber, a porous partition plate is provided between the anode plate and the cathode plate, and the anode plate material contains a chemical-looping oxygen carrier. The method comprises: each electrolytic cell alternately operating in first and second working conditions, and the two electrolytic cells in the same time period being in different working conditions, so as to realize synchronous and continuous production of hydrogen and oxygen in different spaces. The first and the second working conditions are respectively as follows: under the conditions of a normal-temperature alkali liquor and circuit connection, a cathode performs electrochemical hydrogen production, and the chemical-looping oxygen carrier of an anode is oxidized into an oxidized-state chemical-looping oxygen carrier; and under the conditions of a high-temperature alkali liquor and circuit disconnection, the oxidized-state chemical-looping oxygen carrier of the anode i

REACTOR AND METHOD FOR HYDROGEN PRODUCTION FROM WASTEWATER

Resumen de: WO2025232351A1

A reactor and method for hydrogen production from wastewater. The reactor for hydrogen production from wastewater comprises: an electrolytic cell (1), a gas-liquid separation assembly (2), a desorption unit (3), a first control valve, and a second control valve, wherein the electrolytic cell (1) has an electrolyte inlet (11) and an electrolyte outlet (12); the gas-liquid separation assembly (2) comprises a gas-liquid separation unit (21), the gas-liquid separation unit (21) has a separation inlet (211) and a separation outlet (212), and the separation inlet (211) is in communication with the electrolyte outlet (12); the desorption unit (3) has a liquid inlet (31), a liquid outlet (32), a carrier gas inlet (33), and a carrier gas outlet (34), the liquid inlet (31) is connected to the separation outlet (212), and the liquid outlet (32) is connected to the electrolyte inlet (11); the first control valve is connected to the separation outlet (212) to control the liquid discharge rate at the separation outlet (212); and the second control valve is connected to the carrier gas inlet (33) to control the gas inlet rate at the carrier gas inlet (33). In hydrogen production using the reactor, the purity can be conveniently adjusted.

TITANIUM ALLOY BIPOLAR PLATE WITH HIGH PITTING POTENTIAL AND LOW RESISTIVITY AND PREPARATION METHOD THEREFOR

Resumen de: WO2025231966A1

Disclosed in the present invention are a titanium alloy bipolar plate with a high pitting potential and a low resistivity and a preparation method therefor. The titanium alloy bipolar plate comprises the following components in percentages by mass: 3.0-5.0% of Mo, 0.1-0.3% of Ni, 0.005-0.05% of Ru and the balance being Ti, and the total content of impurity elements (Fe, O, C, N and H) does not exceed 0.01%. According to the titanium alloy bipolar plate of the present invention, on the basis of meeting the electrical conductivity requirement, the pitting potential of the titanium alloy bipolar plate can be improved, such that the problems of a relatively poor corrosion resistance and a low hydrogen production efficiency caused due to the relatively low pitting potential of the titanium alloy bipolar plate in a service environment of a water electrolysis hydrogen production electrolytic bath are fundamentally solved.

HYDROGEN PLASMOLYSIS

Resumen de: US2025347005A1

The present invention relates to a method for the combined electrolytic and thermal production of hydrogen gas, the method comprising: (i) providing a plasma treatment unit having a plasma treatment chamber comprising first and second electrodes, and a first gas outlet in fluid communication with said plasma treatment chamber; wherein a base portion of the plasma treatment chamber forms a reservoir of an aqueous electrolyte; wherein the first electrode is comprised within a plasma torch whereby the plasma torch is arranged at a distance above a surface of the reservoir; and wherein the second electrode is submerged in the aqueous electrolyte; (ii) establishing a DC electric potential between the first and second electrodes whilst providing a flow of non-oxidising ionisable gas between the first electrode and the surface of the reservoir to generate and sustain a plasma arc therebetween, thereby producing hydrogen gas in the plasma treatment chamber; and (iii) recovering the hydrogen gas via the first gas outlet. The present invention also relates to a plasma treatment unit.

METHOD FOR MAKING A POLY(TRIAMINO)PYRIMMIDINE PHOTOCATALYST PHOTOELECTRODE

Nº publicación: US2025347014A1 13/11/2025

Solicitante:

KING FAHD UNIV OF PETROLEUM AND MINERALS [SA]
KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

Resumen de: US2025347014A1

A photoelectrode includes a fluorine-doped tin oxide (FTO) substrate, and a layer of graphitic-poly(2,4,6-triaminopyrimidine) (g-PTAP) nanoflakes at least partially covering a surface of the FTO substrate. Further, the g-PTAP nanoflakes have a width of 0.1 to 5 micrometers (μm). In addition, a method for producing the photoelectrode, and a method for photocatalytic water splitting, in which the photoelectrode is used.