Resumen de: WO2024170902A1
An oxygen evolution catalyst material is provided, the catalyst material comprising iridium oxide (IrOx) and a potassium iridate crystalline phase. The potassium iridate crystalline phase provides a reflection in the x-ray diffraction (XRD) pattern of the catalyst material at 20 = 13° and offers high oxygen evolution catalyst activity.
Resumen de: AU2022366812A1
A control system for operating a modular arrangement of electrolysis cells under variable input voltage conditions, such as those from renewable energy sources, to optimize operation by reducing under and over potential of cells. Energy supply and electrolyte flow to cells or groups of cells is interrupted or resumed in response to available electrical potential and the optimal electrical potential required by active cells.
Resumen de: EP4417733A1
This invention discloses a method, device, and system for the direct electrolysis of seawater without desalination for hydrogen production. By immersing the direct electrolysis device for hydrogen production from seawater without desalination directly into seawater, driven by the pressure difference at the interface between seawater and the self-driven electrolyte, seawater continuously enters the device through the solution mass transfer layer. The self-driven electrolyte induces the water to enter the electrolyte solution, while the hydrophobic action of the solution mass transfer layer effectively blocks non-water impurities in the solution. During electrolysis, the water in the self-driven electrolyte is consumed to produce hydrogen and oxygen, inducing the regeneration of the electrolyte, maintaining the pressure difference at the interface, and achieving a self-circulating excitation drive without additional energy consumption. When the amount of water solution induced by the self-driven electrolyte equals the amount of water consumed for hydrogen production, a dynamically stable and energy-efficient method and system for the direct electrolysis of seawater without desalination for hydrogen production are formed.
Resumen de: EP4417593A1
The present invention relates to a method of converting pyrite into green fertilizer in an energetically selfsustained process. This is achieved by a method according to the present invention comprising the following steps:(a) oxidation of a material comprising pyrite to obtain SO<sub>2</sub> gas;(b) separation of the SO<sub>2</sub> gas;(c) utilization of SO<sub>2</sub> gas from step (b) to generate H<sub>2</sub> gas and H<sub>2</sub>SO<sub>4</sub> via a SO<sub>2</sub>-depolarized electrolyzer (SDE) process or sulfur-iodine-cycle (S-I-cycle) process;(d) reaction of the H<sub>2</sub> gas from step (c) with N<sub>2</sub> gas to produce NH<sub>3</sub> via Haber-Bosch process or electrochemical NH<sub>3</sub> synthesis;(e) reaction of the H<sub>2</sub>SO<sub>4</sub> from step (c) with NH<sub>3</sub> from step (d) to produce (NH<sub>4</sub>)<sub>2</sub>SO<sub>4</sub>.
Resumen de: EP4417734A1
Die Erfindung betrifft ein Verfahren zur Regelung eines Elektrolyseurs. Durch das ermitteln von vier verschiedenen Elektrolytflussraten an bestimmten Positionen des Elektrolyseurs lässt sich eine Ausgleichsflussrate innerhalb eines Ausgleichssystems bestimmen, welches eine Fluidverbindung zwischen der Anoden- und Kathodenseite des Elektrolyseurs herstellt. Über das Ausgleichssystem lässt sich zumindest ein teilweiser Konzentrationsausgleich zwischen der Elektrolytkonzentration auf der Anodenseite und der Elektrolytkonzentration auf der Kathodenseite erreichen. Die Ausgleichsflussrate ermöglicht Rückschlüsse auf den Betriebszustand des Elektrolyseurs. Ferner kann auf Basis der Ausgleichsflussrate eine Permeationsflussrate zwischen dem Anoden- und Kathodenraum einer oder mehrere Elektrolysezellen bestimmt werden. Die Permeationsflussrate steht in Zusammenhang mit einem vorgegebenen Differenzdruck zwischen dem Anoden- und Kathodenraum, welcher die Effizienz des Elektrolyseurs verbessert. Die Permeationsflussrate ermöglicht weitere Rückschlüsse auf den Betriebszustand des Elektrolyseurs.
Resumen de: US2024261752A1
The hydrogen gas production device includes a water tank in which a hydrogen-side photocatalyst is immersed in water in which a mediator is dispersed and hydrogen gas is generated by irradiation with light, and a mediator is oxidized; a light irradiation means for irradiating the hydrogen side photocatalyst with light; a water tank in which an oxygen-side photocatalyst is immersed in the water in which the mediator is dispersed and oxygen gas is generated by irradiation with light, and a light irradiation means for irradiating the oxygen side photocatalyst with light; and a water circulation unit for circulating water in which a mediator is dispersed between the hydrogen side and the oxygen side water tank, and a light source of the light irradiation means is a light emitting diode.
Resumen de: AU2022366739A1
Described is a long-lasting, heavy-duty ion exchange membrane comprising a fluorinated ionomer, a Ce
Resumen de: WO2023061564A1
The present invention relates to a method for generating hydrogen based on water, comprising the steps of: placing at least two electrodes (3) in water (19); connecting the at least two electrodes (3) to an alternative current (AC) power source (5), which is configured to supply AC power; and supplying the AC power to the connected electrodes (3).
Resumen de: EP4417574A1
The present disclosure relates to a pressure swing adsorption apparatus for high purity hydrogen purification from ammonia decomposition and a hydrogen purification method using the same, and more specifically, the pressure swing adsorption apparatus includes a plurality of adsorption towers including a guard bed unit and a hydrogen purification unit, in which each adsorption tower is packed with different adsorbents, to purify high purity hydrogen from mixed hydrogen gas produced after ammonia decomposition, make it easy to replace the adsorbent for ammonia removal, minimize the likelihood that the lifetime of the adsorbent in the hydrogen purification unit is drastically reduced by trace amounts of ammonia, efficiently recover hydrogen of the guard bed unit, thereby maximizing the hydrogen recovery rate compared to a conventional pressure swing adsorption process including a pretreatment unit and a hydrogen purification unit, and respond to a large change in ammonia concentration in the raw material.
Resumen de: CN118119466A
The present invention relates to a method for manufacturing a multilayer porous transport layer, the method comprising (a) providing a first feedstock comprising first metal particles and a first polymeric binder; and providing a second feedstock comprising second metal particles and a second polymeric binder; the first raw material and the second raw material have a metal powder content of 40% to 70% by volume; and the first feedstock has (i) metal particles having a smaller average particle size, (ii) a higher metal powder content, or (iii) both metal particles having a smaller average particle size and a higher metal powder content compared to the second feedstock; (b) co-extruding the first raw material and the second raw material to form a film-like green body comprising a first layer and a second layer substantially connected to the first layer at a temperature higher than the melting temperature and/or glass transition temperature of the first polymeric binder and the second polymeric binder; (c) optionally smoothing the film-like green body by rolling or calendering; (d) debonding the film-like green body to form a palm body; (e) sintering the brown body in a non-oxidizing atmosphere or vacuum and at a temperature from 700 DEG C to 1300 DEG C to form the porous transport layer; wherein the first raw material and the second raw material are free of any solvent.
Resumen de: WO2023139258A1
The present invention relates to a plant comprising - a reverse water gas shift (RWGS) section comprising - a first feed comprising hydrogen to the RWGS section, and a second feed comprising carbon dioxide to the RWGS section, or - a combined feed comprising hydrogen and carbon dioxide to the e-RWGS section, - a water removal section downstream the RWGS section, - a compressor downstream the water removal section, and - a cryogenic CO2 separation section downstream the compressor, wherein said RWGS section is arranged to convert said first feed and said second feed - or said combined feed - into a first syngas stream, and feed the first syngas stream to the water removal section, wherein said water removal section is arranged to remove water from the first syngas stream to produce a dehydrated syngas stream and a water condensate, wherein the compressor is arranged to compress the dehydrated syngas stream to produce a compressed syngas stream, wherein said cryogenic CO2 separation section is arranged to separate the compressed syngas stream into a CO2 depleted syngas stream and a CO2 rich condensate, wherein the plant has means for recycling at least a portion of the CO2 rich condensate to the RWGS section or to a feed to the RWGS section, and wherein the RWGS section is an electrically heated RWGS (e-RWGS) section.
Resumen de: JP2024111616A
【課題】簡単な構成で個々の水電解スタックの故障、劣化を診断することと、安全、簡便に遮断できる水素製造装置を提供する。【解決手段】本発明に係る水素製造装置は、複数の水電解スタックが直列又は並列に接続された水電解スタック群と、水電解スタック群を迂回する、バイパスダイオードと該バイパスダイオードの下流側に直列接続された第2抵抗を含むバイパス回路と、水電解スタックに並列接続された第1ダイオードと、第1ダイオードの下流側に第1ダイオードと直列接続された第1抵抗と、水電解スタックの下流側に水電解スタックと直列接続された第1電流検知機構と、を備えることを特徴とする。【選択図】図2
Resumen de: AU2022431496A1
Described herein are inflatable wearable devices comprising: a reaction container having an expandable bladder, a dry powder compartment and a liquid compartment with a removable barrier between the compartments, the expandable bladder being connected to at least one of the dry powder compartment or the liquid compartment, and wherein the dry powder compartment comprises a mixture of an ionic hydride and a borohydride, and wherein the liquid compartment comprises an aqueous solution comprising a foam forming agent, and wherein upon removal of the barrier between the compartments, the aqueous solution contacts the mixture of an ionic hydride and a borohydride, thereby forming hydrogen gas foam.
Resumen de: JP2024110486A
【課題】熱線型半導体式の濃度測定部を用いて、酸素極から排出される排出ガス中の水素濃度を精度良く取得することができる水電解システムを提供する。【解決手段】水電解システムは、水の電気分解により酸素を生成する酸素極を含む水電解部と、酸素極から排出される排出ガスと、希釈ガスと、を混合可能な混合部と、混合部から送られる対象ガス中の水素濃度を測定する熱線型半導体式の濃度測定部と、濃度測定部が測定した水素濃度である測定水素濃度を、対象ガス中の酸素濃度を基準に補正して補正水素濃度とする濃度補正部と、補正水素濃度を用いて排出ガス中の水素濃度を算出する濃度算出部と、を備え、濃度補正部は、対象ガス中の酸素濃度が設定濃度以上である場合、測定水素濃度を増加補正して補正水素濃度とし、対象ガス中の酸素濃度が設定濃度より低い場合、測定水素濃度を減少補正して補正水素濃度とする。【選択図】図1
Resumen de: JP2021165427A
To provide a hydrogen gas production facility capable of effectively utilizing heat generated during operation in preventing freezing according to a need therefor, and a hydrogen gas production method capable of producing hydrogen gas by operating the hydrogen gas production facility in a good environment.SOLUTION: The hydrogen gas production facility comprises a water electrolysis device and a wall that partitions a storage space storing the water electrolysis device from the outside space. The wall includes a first ventilation port and a second ventilation port each carrying out ventilation to release heat in the storage space to the outside space, with a first ventilation mode of releasing heat from the first ventilation port disposed close to heat generating equipment and a second ventilation mode of releasing heat from the second ventilation port disposed far from the heat generation equipment made switchable to each other.SELECTED DRAWING: Figure 2
Resumen de: WO2024166004A1
Electrolytic cell (10) for the decoupled electrolysis of water comprising a first electrode (11), for the production of hydrogen (H2) and oxygen (O2), alternatively; a second electrode (12); an alkaline aqueous solution (13) in which the first electrode and the second electrode are immersed; polarity reversal means operatively connected to both the first electrode and the second electrode; the first electrode and the second electrode are polarized in the opposite way to each other in all operating conditions; the second electrode (12) comprises porous conductive carbon.
Resumen de: WO2024167504A1
Systems and techniques are described herein. For instance, a method for producing hydrogen is described. The method includes determining an amount of reactive power for an electrolyzer of a hydrogen-production installation connected to a power grid to generate, or to consume; and controlling operations of the electrolyzer such that electrolyzer generates, or consumes, substantially the determined amount of reactive power. Additionally, a system for producing hydrogen is described. The system includes a connection to a power grid configured to receive electrical power from the power grid; one or more electrolyzers configured to receive the electrical power and to produce hydrogen; and a controller configured to: determine an amount of reactive power for the one or more electrolyzers to generate, or to consume; and control respective operations of the one or more electrolyzers such that the one or more electrolyzers collectively generate, or consume, substantially the determined amount of reactive power.
Resumen de: WO2024165852A1
An electrolyser system (10) and a method of operating an electrolyser system (10), the electrolyser system (10) comprising an electrolyser (16) and a metal hydride or adsorption-desorption compressor (24), wherein the electrolyser (16) has at least one electrolyser cell with a steam input (22) and at least one gas output. The method comprises supplying steam through a first side of the electrolyser cell at the steam input (22), operating the electrolyser (16) to split part of the steam into hydrogen and oxygen in the at least one electrolyser cell, venting a mixture of the hydrogen and the remaining steam from the first side of the electrolyser cell at the at least one gas output (18), passing the mixture into the metal hydride or adsorption-desorption compressor (24), and cryo-adsorbing the hydrogen of the mixture in the metal hydride or adsorption-desorption compressor (24) to compress the hydrogen and desorbing the compressed hydrogen from the metal hydride or adsorption-desorption compressor (24). The electrolyser system (10) is connected to a source of cold waste gas to operate the cryo-adsorption.
Resumen de: WO2024165389A1
The present invention relates to a pyrogenic process for manufacturing metal oxides or metalloid oxides wherein a metal precursor and/or a metalloid precursor is introduced into a flame formed by burning a gas mixture comprising oxygen and hydrogen, wherein at least a part of the hydrogen has been obtained from electrolysis of water or an aqueous solution, using electrical energy, at least a part of which has been obtained from a renewable energy source, and wherein at least a part of the thermal energy of the flame is transferred to a first heat transmission medium by means of at least one exchanger, thereby heating the first heat transmission medium to a maximal temperature in the range between 80 and 150 °C.
Resumen de: WO2024164842A1
A hydrogen production and charging method and system, relating to the technical field of hydrogen production and charging integration. The method comprises: measuring a water level and a TDS value in a water storage module, and if the water level and the TDS value are not abnormal, driving an electrolytic cell to start to work; starting a PEM electrolytic cell to purge and replace gas in a pipeline, using an exhaust valve to control the pressure in the pipeline, and releasing the exhaust valve in a pulsed manner multiple times to discharge mixed gas; and maintaining a closed state, continuously performing hydrogen production and pressure boosting until the pressure in the pipeline reaches a preset pressure range, and performing pressure filling of a hydrogen storage apparatus within the preset pressure range. The PEM electrolytic cell, the water storage module, a power supply module, a hydrogen charging module, and a main control module are integrated in one machine, so that the machine is easy to operate in use, has safety and high efficiency, can meet the hydrogen usage demand of hydrogen energy-based end products such as hydrogen energy-based bicycles; thus, the time required for replacing a hydrogen storage device can be greatly saved, and vehicle operation costs can be reduced.
Resumen de: WO2024164228A1
The present application relates to a bipolar plate, an electrolysis cell, a fuel cell, and a device for hydrogen production by water electrolysis. The bipolar plate comprises: a substrate; an anode side flow channel comprising an anode main flow channel and an anode reaction zone flow channel which are connected to each other, the anode main flow channel passing through the substrate, and the anode reaction zone flow channel being formed on a first side of the substrate; and a cathode side flow channel comprising a cathode main flow channel and a cathode reaction zone flow channel which are connected to each other, the cathode main flow channel passing through the substrate, and the cathode reaction zone flow channel being formed on a second side of the substrate. The bipolar plate can overcome the defects that the bipolar plate in the prior art is complex in manufacturing process, large in quantity, high in production cost and high in fluid pressure which needs to be borne on a single side, and has the advantages of simple manufacturing process, a small quantity of plates for expressing flow channel features, low production cost and better pressure bearing capacity.
Resumen de: AU2023219704A1
An electrolyzer cell comprises a first half cell with a first electrode, a second half cell with a second electrode, a separator separating the first half cell from the second half cell, wherein a compressive load is applied between the separator and the first electrode or between the separator and the second electrode, or between both the first and second electrodes and the separator, and a nanoporous support structure located between the first electrode and the separator.
Resumen de: AU2022439854A1
A flare stack 10 is provided with: a main burner 11 to which ammonia is supplied; a pilot burner 12 to which ammonia is supplied; a first catalyst 13, which is disposed, in the flow of ammonia, upstream of the pilot burner 12 and decomposes the ammonia supplied to the pilot burner 12 to produce reformed fuel containing hydrogen; and a heater 14 for heating the first catalyst 13.
Resumen de: US2024270610A1
A system and a method of producing alkaline hydrogen-rich water with acidic oxygen-rich water as byproduct are disclosed. The method begins by filling a first quantity of source water into a first container portion of an electrolysis container through a first container inlet. A second quantity of source water is also filled into a second container portion of the electrolysis container through a second container inlet. An electrolysis process is then executed between the first quantity of source water and the second quantity of source water with a cathode, an anode, and a semipermeable ion-exchange membrane of the electrolysis container. After the electrolysis process is executed, a quantity of alkaline hydrogen-rich water is released out of the first container portion through a first container outlet of the electrolysis container, while a quantity of acidic oxygen-rich water is released out of the second container portion through a second container outlet.
Nº publicación: US2024270574A1 15/08/2024
Solicitante:
HONDA MOTOR CO LTD [JP]
HONDA MOTOR CO., LTD
Resumen de: US2024270574A1
A fuel manufacturing system that makes it possible to further improve energy efficiency. the fuel manufacturing system includes: a biomass raw material supply device; a gasification furnace; a liquid fuel manufacturing device; a hydrogen supply device; a heater; and a controller, the controller being able to calculate an amount of heat necessary for gasifying the biomass raw material in the gasification furnace, and control each of an amount of the biomass raw material to be supplied to the heater by the biomass raw material supply device and an amount of the hydrogen to be supplied to the heater by the hydrogen supply device.