Absstract of: GB2613365A

Aspects of the present invention relate to hydrogen recovery system for extracting hydrogen from process gases. The hydrogen recovery system includes an electrochemical pump for extracting at least some of the hydrogen occurring in the process gases. The electrochemical pump has an anodic compartment having at least one anode, a cathodic compartment having at least one cathode, and a membrane disposed between the anodic compartment and the cathodic compartment. A controller is provided for controlling the electric current supplied to the electrochemical. The anodic compartment has an anodic compartment inlet for introducing the process gases into the anodic compartment; and an anodic compartment outlet for discharging a waste gas from the anodic compartment. The cathodic compartment has a cathodic compartment outlet for discharging hydrogen extracted from the process gases.

Absstract of: EP4190943A1

This invention presents a new approach for an electrochemical cell design that is tailored to the synthesis of hydrogen peroxide from electrochemical oxygen reduction reaction. In this invention, we disclose the use of a porous electrically conductive layer that simultaneously provides uniform oxygen gas flow and electrical conductivity to the cathode of a hydrogen peroxide producing electrochemical cell. Water is set to flow through the cathode gas diffusion layer, which helps in the removal of hydrogen peroxide from the electrode.

Absstract of: US2022038049A1

A distributed direct current power system including an inverter to invert DC to alternating current (AC), a plurality of photovoltaic (PV) strings, and a plurality of maximum power point tracking (MPPT) converters coupled between the plurality of photovoltaic (PV) strings, respectively, and the central inverter, the plurality of MPPT converters configured to maximize solar power production by the plurality of PV strings and minimize mismatch between the plurality of PV strings. The system also including a plurality of batteries, a plurality of DC-DC battery converters (DCBC) coupled to the plurality of batteries and configured to manage charge and discharge of the plurality of batteries, enable interconnection of the plurality of PV strings and the plurality of batteries, and supply a constant medium DC voltage to the central inverter, and a hydrogen generation system in electrical communication with the inverter, the photovoltaic strings, or the batteries.

Absstract of: GB2613332A

A membrane less electrolyser cell is described which has flow-through electrodes 1,2. The electrodes 1,2 have sintered metal diffusers 10 and the electrolyte solution is fed into the gap between the electrodes at pressure. As the electrolyte is forced into the gap, the flow diverges carrying gas products into separate effluent channels. The porous electrodes consist of carbon nanotubes (CNTs) 3, that enhance the separation of gases generated. The gases generated, such as hydrogen 5 and oxygen 4, are released at the back of the electrodes. In order to avoid generation of gases between the electrodes, surfaces that are facing the gap may be coated by an insulator material 11 so electrocatalytic reactions cannot take place on these surfaces which would otherwise hinder gas generation within the electrode gap.

Absstract of: GB2613362A

An electrolyser 200 for producing hydrogen is detailed. It comprises: a cathode structure comprising a first PCB plate 202 and an electrically conductive substrate 220; an anode structure comprising a second PCB plate 204 and an electrically conductive substrate 220. An anion exchange membrane (AEM) 218 is located between the cathode structure 202 and the anode structure 204. Two transport layers 214,216 are also present where one transport layer 216 is disposed between the anode structure 204 and the anion exchange membrane 218 and one transport layer 214 is disposed between the cathode structure 202 and the anion exchange membrane 218. There is also at least one fluid path to supply an electrolyte to the electrolyser. The PCB plates may also comprise copper plated layers with subsequent nickel overlayers. The transport layer 214,216 may also comprise a catalyst and porous material such as felt or metal mesh.

Absstract of: WO2023093957A1

A wind turbine (1) comprising a tower (2), a nacelle (3) mounted rotatably on the tower (2) via a yaw system (8) and a hub (4) carrying one or more wind turbine blades (5) is disclosed. The wind turbine (1) further comprises a generator (23), an AC/DC converter (24) connected to the generator (23) and an electrolysis system (25) connected to a DC power output of the AC/DC converter (24) for producing hydrogen. The electrolysis system (25) is arranged in an up-tower part of the wind turbine (1), e.g. in the nacelle (3). The wind turbine (1) further comprises a hydrogen transport line (6) connected to the electrolysis system (25) for transporting hydrogen produced by the electrolysis system (25) away from the electrolysis system (25), the hydrogen transport line (6) extending along an exterior surface of the tower (2) from the position of the electrolysis system (25) to a lower part of the tower (2).

Absstract of: US2023167564A1

The disclosure relates, inter alia, to a system comprising: (1) an electric power grid; (2) an electrolyzer generating a first stream of hydrogen in communications link with the electric power grid; (3) hydrogen production means for producing a second stream of hydrogen, said hydrogen production means being a non-electrolyzer in communications link with the electrolyzer; (4) a first conduit leading to a hydrogen user through which hydrogen flows to the hydrogen user; (5) a second conduit connecting the electrolyzer to the first conduit through which hydrogen from the electrolyzer flows to the first conduit at a first location; (6) a third conduit distinct from the second conduit connecting the non-electrolyzer to the first conduit through which hydrogen from the non-electrolyzer flows to the first conduit at a second location distinct from the first location; and (7) means for controlling and maintaining a continuous flow of hydrogen to the hydrogen user.

Absstract of: WO2023094020A1

The invention relates to a method and an apparatus for producing ammonia (13), in which a first hydrogen/nitrogen fraction (6) is provided at a time-varying flow rate in order to form an ammonia synthesis gas (8) which is converted to ammonia in an ammonia synthesis (A), wherein the first hydrogen/nitrogen fraction (6) is supplemented by a second hydrogen/nitrogen fraction (14) in such a way that, during normal operation, the ammonia synthesis gas (8) can always be supplied to the ammonia synthesis (A) at a flow rate which exceeds a predefined minimum value. The characterising feature here is that ammonia (10) produced in the ammonia synthesis (A) is transferred in liquid form to a storage means (Z) from which ammonia (15) is taken and split into hydrogen and nitrogen in order to obtain hydrogen and nitrogen so as to form the second hydrogen/nitrogen fraction (14).

Absstract of: WO2023094487A1

The present invention is related to a system and method for the removal of carbon dioxide from an atmosphere, more particularly by removing carbon dioxide from an atmosphere using water electrolysis, which produces hydrogen. The system and method are based on improvements related to the electrolyser which is fed by a CO2-rich, post-capture (bi)carbonate solution, wherein said improvements enable isolation of a 85:15 wt.% CO2/O2 gas mixture from the anolyte during operation, with an in line CO2/O2 separation at the anode of the electrolyser.

Absstract of: US2023167562A1

The present invention relates to a carbon-assisted solid oxide electrolysis cell comprising: a cathode, an electrolyte, an anode, and an anode chamber set in the order. The cathode is supplied with water as an oxidant and the reduction reaction occurs. The anode chamber includes carbon fuel and CO2 absorber, supplied with the water as in situ gasification agent, wherein the water assists the gasification of the carbon fuel to generate CO and H2. The O2− ions generated by cathode are transported to the anode through the electrolyte, and react with CO and H2 generated in the anode chamber as oxidant. The CO produced by the carbon gasification reaction partly reacts with water to generate CO2 and H2, while the CO2 absorber promotes the production of H2 by absorbing the CO2 produced by the water gas shift reaction. The present invention can control the internal gas composition of the CA-SOEC anode effectively, improving the performance of the carbon-assisted electrolysis cell and reducing energy consumption. Furthermore, the present invention achieves the simultaneous generation of fuel gas by the cathode and the anode, significantly improving the efficiency of the electrolysis.

Absstract of: US2023167559A1

An energy storage system and method employ electrolysis to convert excess electrical energy into hydrogen gas and oxygen gas stored in cryogenic flux capacitor units. When needed, the hydrogen and oxygen are liberated from the CFCs and mixed with supercritical CO2 and combusted in a combustion chamber without any nitrogen or air present to form a heated mixture of water and sCO2 that drives a turbine that creates energy that is returned to the power grid. The water in the sCO2 mixture is then extracted and returned to a reservoir for electrolysis when needed again, resulting in a closed system for storing electrical energy.

Absstract of: WO2023093012A1

Provided in the present application is a method for a triple-electrode system electrolyzing water to produce hydrogen. The method comprises the following process: assembling an electrolytic cell; and forming a first circuit between a hydrogen evolution cathode plate, an auxiliary electrode plate and an external power source in the electrolytic cell, and also forming a second circuit between the auxiliary electrode plate, an oxygen evolution anode plate and the external power source, so as to enable, by means of the connection of the first circuit and the disconnection of the second circuit, a reaction on the hydrogen evolution cathode plate to prepare hydrogen, and enable, by means of the disconnection of the first circuit and the connection of the second circuit, a reaction on the oxygen evolution anode plate to prepare oxygen. In the same electrolytic cell, three electrodes, i.e. a hydrogen evolution cathode plate, an auxiliary electrode plate and an oxygen evolution anode plate, and an external power source are connected to form two circuits, such that separate preparation of hydrogen and oxygen is realized by means of controlling the connection and disconnection of the two circuits, and therefore the phenomenon of the mixture of prepared hydrogen and oxygen is avoided, thereby reducing the separation cost.

Absstract of: WO2023093423A1

Disclosed in the present invention is a heat recovery system for producing hydrogen from a solid oxide electrolytic cell. The heat recovery system comprises a water storage tank, a solar cell panel, low-temperature metal hydrogen storage tanks, an evaporator, high-temperature metal hydrogen storage tanks, a heat exchanger, a solid oxide electrolytic cell, a separator, and a reactor. After water in the water storage tank is sequentially subjected to multi-stage heat exchange through the solar cell panel, the low-temperature metal hydrogen storage tanks, the evaporator, the high-temperature metal hydrogen storage tanks and the heat exchanger, water vapor reaching a working temperature enters the solid oxide electrolytic cell; hydrogen generated after an electrochemical reaction and unused water vapor flow out from a cathode product outlet of the solid oxide electrolytic cell, are first subjected to heat exchange with water vapor to be reacted by means of the heat exchanger, and then enter the separator; one hydrogen outlet I of the separator is connected to the low-temperature metal hydrogen storage tanks and the high-temperature metal hydrogen storage tanks, and heat released in a hydrogen storage process of the hydrogen storage tanks heats water; the other hydrogen outlet II of the separator is connected to the reactor, hydrogen reacts with carbon dioxide in the reactor to generate methane, and reaction heat from methane production is conveyed to the evaporator to heat water;

Absstract of: WO2023096543A1

The invention relates to a method, an electrode and a system for electrochemical hydrogen production from water oxidation and proton reduction. The method for electrochemical hydrogen production from water oxidation and proton reduction by covalently attaching a ruthenium complex onto a conducting material is provided by fluorine-doping a carbon cloth (FCC) and use this as an anode and/or a cathode in an electrochemical cell. The electrode for use in electrochemical hydrogen production from water oxidation Is achieved by that the electrode comprises a ruthenium complex covalently attached onto a conducting material having a pyridine linker with a -CH2-CH2 spacer unit. The system for electrochemical hydrogen production from water oxidation and proton reduction, comprising at least an electrochemical cell having two electrodes, an anode and/or a cathode, where the electrodes comprise a ruthenium complex covalently attached onto a conducting material, is achieved by that the conducting material is made by fluorine-doped carbon cloth (FCC).

Absstract of: WO2023097028A1

An electrolyzer system includes a multiple-state power input and control circuitry for the multiple-state power input. The control circuitry is configured to obtain a power source metric indicator and, based on the power source metric indicator, determine a hydrogen generation profile for the electrolyzer. The control circuitry is configured to determine, based on the hydrogen generation profile, a selected state from among multiple power states of the electrolyzer system. The control circuitry is configured to cause operation of the electrolyzer system in the selected state.

Absstract of: AU2021381703A1

The invention concerns an apparatus for the electrolytic production of hydrogen comprising: - a first chamber (26) filled with water; - a lower part (23); - an upper part (28); - a gas production unit (1) located within the lower part (23) and including an electrolytic cell and a hydrogen nozzle (4); - an electric generator (12) located within the upper part (28); - a first driving mechanism (5-9) located within the first chamber (26); - a hydrogen outlet (18) located in the top part of the first chamber (26); the first chamber (26) being located between the lower and upper parts (23,28) and communicating with the gas unit (1) via the hydrogen nozzle (4), in such a way that hydrogen bubbles may be generated within the water of the first chamber (26) and be directed in an upwards direction due to the buoyancy force acting on the bubbles; the first driving mechanism (5-9) being adapted to be actuated by ascending bubbles; the generator (12) being adapted to be actuated by the first driving mechanism (5-9); and the electrolytic cell being connected to the electric generator (12). The invention also concerns a method for the production of hydrogen comprising the following steps: - generating hydrogen in water via electrolysis, - actuating an upwardly oriented driving mechanism with hydrogen bubbles generated during said electrolysis, - converting the mechanical energy of the driving mechanism into an electrical energy, - using said electrical energy for said electrolysis.

Absstract of: US2023166968A1

The present disclosure relates to a natural gas reforming system capable of reducing, by using a co-electrolysis device, the emission amount of carbon dioxide produced by reforming natural gas, of supplying heat to a reformer through syngas produced by the co-electrolysis, and of producing additional hydrogen, and a process thereof.

Absstract of: EP4186995A1

A hydrogen generator with hydrogen leakage self-aware function comprises an electrolytic module, an integrated passageway device, a condensate filter, a humidification cup, a housing, an internal hydrogen sensing component, and a monitoring device. The electrolytic module is configured to electrolyze an electrolyzed water to generate a gas comprising hydrogen. The integrated passageway device comprises gas inlet passageway and a gas outlet passageway. The condensate filter is configured for filtering the gas comprising hydrogen. The humidification cup is configured for humidifying the gas comprising hydrogen. The gas comprising hydrogen flows through the condensate filter and the humidification cup by the way of the integrated passageway device. The internal hydrogen sensing component is configured in the housing for sensing the hydrogen concentration in the housing to generate an internal sensing result. The monitoring device is coupled to the internal hydrogen sensing component. The monitoring device controls the operation of the hydrogen generator according to the internal sensing result to avoid the hydrogen generator from the problem caused by hydrogen.

Absstract of: EP4186998A1

The present invention is related to a system and method for the removal of carbon dioxide from an atmosphere, more particularly by removing carbon dioxide from an atmosphere using water electrolysis, which produces hydrogen.The system and method are based on improvements related to the electrolyser which is fed by a CO2-rich, post-capture (bi)carbonate solution, wherein said improvements enable isolation of a 85:15 wt.% CO2/O2 gas mixture from the anolyte during operation, with an in line CO2/O2 separation at the anode of the electrolyser.

Absstract of: EP4186996A1

Solid oxide electroyzer cell (SOEC) systems and methods that include a stack of electrolyzer cells configured to receive steam and generate a hydrogen and steam exhaust stream, and a steam recycle blower configured to recycle a portion of the hydrogen and steam exhaust stream back to the stack.

Absstract of: AU2021352136A1

This invention relates to an arrangement to optimize the production of hydrogen, the arrangement comprising at least a solar energy unit (12) and a wave and/or tidal energy recovery system (2), which are arranged to produce renewable energy, a water purification unit (5) and an electrolysis unit (9), which is arranged to produce hydrogen from pure water produced by the water purification unit (5), and the electrolysis unit (9) and the water purification unit (5) are powered by the renewable energy produced by the solar energy unit (12) and the wave and/or tidal energy recovery system (2). The arrangement comprises a buffer unit (6), into which pure water is supplied from the water purification unit (5) during periods when the production of the renewable energy exceeds the need of energy of the electrolysis unit (9).

Absstract of: AU2021356293A1

Embodiments of the present invention relate to an electrolysis system comprising a hydrogen generating cell; a storage for storing an electrically conducting solution; an input power source configured to provide a direct current (DC) voltage; and a power supply module for supplying power to the at least two electrodes; wherein the power supply module comprises a plurality of power metal-oxide-semiconductor field-effect transistors (MOSFETs), each MOSFET comprising a gate, a source and a drain and wherein the plurality of MOSFETs are electrically connected in parallel such that a current load provided by the input power source is distributed over the plurality of MOSFETs.

Absstract of: WO2023088723A1

The invention relates to the field of hydrogen production plant, particularly to a method for producing hydrogen in the hydrogen production plant by using two types of electrolysis systems. The first electrolysis system (ES1) comprises an active DC module (Ma) and at least one first-type electrolyzer (E1), which is configured for producing a first hydrogen output (HO1) by using a first power from the active DC module (Ma), and the second electrolysis system (ES2), comprising a passive DC module (Mp) and at least one second-type electrolyzer (E2), which is configured for producing a second hydrogen output (HO2) by using a second power from the passive DC module (Mp). The method comprises the steps of: in a ramp-up phase, increasing the first hydrogen output (HO1) of the first electrolysis system (ES1); and when the first hydrogen output (HO1) of the first electrolysis system (ES1) crosses a first predefined hydrogen output threshold (HOthres1), switching on the second electrolysis system (ES2), and decreasing the first hydrogen output (HO1) of the first electrolysis system (ES1) to the first predefined hydrogen output threshold (HOthres1) minus the second hydrogen output (HO2), so that an overall hydrogen output (HOtotal) of the hydrogen production plant (HPP) is a sum of the first hydrogen output (HO1) and the second hydrogen output (HO2).

Absstract of: WO2023087370A1

The present invention provides a carbon dioxide capture method for coupled staged electrolysis/pyrolysis hydrogen production. The method comprises: using an alkaline solution to capture CO2 in a target component and obtain a carbonate solution; enabling the carbonate solution to be subjected to mild electrolysis, obtaining a hydroxide and H2 at a cathode, obtaining bicarbonate and O2/CO2 mixed gas at an anode, and absorbing CO2 from the mixed gas via a small absorption tower then to obtain pure oxygen; recycling the hydroxide to serve as a capture agent; and pyrolyzing the bicarbonate to obtain pure CO2. According to the method for cyclically absorbing/releasing CO2 using the alkaline solution, a technique of capturing a wide concentration range of CO2 can be provided. The alkaline solution is regenerated by means of staged electrolysis/pyrolysis, mild electrolysis is performed by controlling the voltage and current of an electrolysis tank, pure H2 and pure O2 can be respectively obtained in an electrolysis stage, the hydroxide after electrolysis enters the absorption tower to capture CO2 in the target component, the bicarbonate after electrolysis enters a pyrolysis tank to obtain pure CO2.

Absstract of: US2023159357A1

The ParaDice Process System is the interconnection of a renewable power source to power an ocean water electrolysis apparatus comprising a water container, an electrolysis cell, optionally a precious metal harvesting probe, a filtration system, and a settlement pond wherein the hydrogen generated as a result of electrolysis is supplied to either a hydrogen combustion engine or hydrogen turbine to power an electricity generator thereby creating a renewable zero carbon emission electric power generation system. The hydrogen gas is collected by a chlorine scrubber and transferred to either a hydrogen combustion engine or a hydrogen turbine. Where a hydrogen turbine is embodied the waste heat created therein is used to generate electricity and increase the performance of the filtration system and settlement pond.