Absstract of: WO2023088749A2

The present disclosure relates to an electrolysis system (200) for generating hydrogen, the system comprising an electrolyser (202) comprising an electrolyte water inlet, a first gas outlet (204) and a second gas outlet (206), an electrical generator (212) configured to generate electricity (212), preferably for the electrolyser, said electrical generator (212) being connected to the first and/or second gas outlet (204, 206) of the electrolyser and configured to be powered, at least in part, by gas flow provided via the first and/or second gas outlet, the system further comprising an electrolyte pump (214) for supplying the electrolyser (202) with electrolyte water, wherein the electrical generator (212) is a motor -generator comprising a first mode for generating electricity and a second mode for using electricity to drive the electrolyte pump (214).

Absstract of: WO2023088734A1

The present invention relates to an electrochemical cell (0) comprising an anode (1), a cathode (2) and an anion-conducting membrane (3) located between the anode (1) and the cathode (2). The invention also relates to the use of the cell (0) in a method for preparing hydrogen (H2) and oxygen (O2) by electrochemically splitting water (H2O). Moreover, the invention relates to an electrolyser (6, 8) comprising a multiplicity of the cells (0), and to a method for producing the electrolyser (6, 8). The aim of the invention is to provide an electrochemical cell (0) by means of which anion-exchange-membrane-based water splitting can be carried out on an industrial scale. The aim is also for the cell to be inexpensive in terms of production and to allow for the energy-efficient preparation of hydrogen and oxygen. The aim is achieved in that at least part of the anode is in the form of a first textile fabric comprising catalytically active textile line structures, and in that the first textile fabric directly contacts the membrane.

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: WO2023087689A1

Provided in the present application is a method for controlling intermittent and fluctuating electrolytic hydrogen production. The method comprises the following steps: acquiring a power generation output power of a new-energy power generation device; comparing the power generation output power with a preset starting power of an electrolytic cell; and controlling an operation state of the electrolytic cell according to a comparison result of the power generation output power and the preset starting power. By means of the method for controlling intermittent and fluctuating electrolytic hydrogen production provided in the present application, an electrolytic hydrogen production system can consume intermittent and fluctuating wind power generation and photovoltaic power generation, and insofar as the safety of a hydrogen production process is ensured, electric energy is preferentially used for hydrogen production, thereby promoting the consumption and utilization of renewable-energy power generation in an off-grid/grid-connected mode.

Absstract of: GB2612985A

The present disclosure relates to an electrolysis system (200) for generating hydrogen, the system comprising an electrolyser (202) comprising an electrolyte water inlet, a first gas outlet (204) and a second gas outlet (206), an electrical generator (212) configured to generate electricity (212), that can be used in the electrolyser. The electrical generator (212) is connected to the first and/or second gas outlet (204, 206) of the electrolyser and configured to be powered, at least in part, by gas flow provided via the first and/or second gas outlet. The system also comprises an electrolyte pump (214) for supplying the electrolyser (202) with electrolyte water. The electrical generator (212) is a motor-generator comprising a first mode for generating electricity and a second mode for using electricity to drive the electrolyte pump (214). A method of recycling energy in an electrolysis system is detailed as well as an electrolysis system where the electrolyte pump (214) for supplying the electrolyser (202) with electrolyte water and where the electrolyser powers, at least in part, the electrolyte pump.

Absstract of: EP4183897A1

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); andwhen 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), anddecreasing 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: EP4183895A1

A hydrogen system includes: a compressor including at least one cell that includes an electrolyte membrane, an anode catalyst layer provided on one principal surface of the electrolyte membrane, a cathode catalyst layer provided on another principal surface of the electrolyte membrane, an anode gas diffusion layer provided on the anode catalyst layer and including a porous sheet containing a metal, and a cathode gas diffusion layer provided on the cathode catalyst layer, and a voltage applicator that apples a voltage between the anode catalyst layer and the cathode catalyst layer, wherein the compressor that generates compressed hydrogen by causing the voltage applicator to apply the voltage to move hydrogen in hydrogen-containing gas supplied to an anode to the cathode via the electrolyte membrane; and a controller that causes the voltage applicator to apply the voltage after shutdown or at startup.

Absstract of: KR20230070401A

본 발명은 우수한 물분해 수소발생반응(Hydrogen evolution reaction, HER) 활성을 갖는 나이오븀 바나듐 셀레나이드 합금 나노시트 및 이의 제조방법에 관한 것이다. 보다 구체적으로, 본 발명은 전기화학적 물분해 반응 수소발생 촉매 활성을 갖는 나이오븀 바나듐 셀레나이드 (Nb1-xVxSe2, 0 < x ≤ 1) 합금 나노시트 및 이들의 조성비(x)를 정량적으로 조절 가능한 콜로이드 용액 반응 제조방법에 관한 것이다.

Absstract of: KR20230070399A

본 발명은 우수한 물분해 수소발생반응(Hydrogen evolution reaction, HER) 활성을 갖는 몰리브덴 바나듐 셀레나이드 합금 나노시트 및 이의 제조방법에 관한 것이다. 보다 구체적으로, 본 발명은 전기화학적 물분해 반응 수소발생 촉매 활성을 갖는 몰리브덴 바나듐 셀레나이드 (Mo1-xVxSe2, 0 < x ≤ 1) 합금 나노시트 및 이들의 조성비(x)를 정량적으로 조절 가능한 콜로이드 용액 반응 제조방법에 관한 것이다.

Absstract of: KR20230070657A

본 발명은 전기 영동 증착(Electrophoretic deposition) 공정에서 사용되는 용매의 종류를 제어하여 기판 상에 나노입자 3차원 구조체를 증착하는 방법에 관한 것으로, 극성 용매 및 비극성 용매를 포함하는 혼합 용매에 콜로이드 FeP 나노입자를 분산시키는 단계, 및 콜로이드 FeP 나노입자 분산액에 다공성 기판이 부착된 한 쌍의 전극을 투입한 후 전압을 인가하여 상기 기판의 표면에 콜로이드 FeP 나노입자를 증착시키는 단계를 포함한다.

Absstract of: KR20230070400A

본 발명은 우수한 물분해 수소발생반응(Hydrogen evolution reaction, HER) 활성을 갖는 몰리브덴 나이오븀 셀레나이드 합금 나노시트 및 이의 제조방법에 관한 것이다. 보다 구체적으로, 본 발명은 전기화학적 물분해 반응 수소발생 촉매 활성을 갖는 몰리브덴 나이오븀 셀레나이드 (Mo1-xNbxSe2, 0 < x ≤ 1) 합금 나노시트 및 이들의 조성비(x)를 정량적으로 조절 가능한 콜로이드 용액 반응 제조방법에 관한 것이다.

Absstract of: WO2023085938A1

A high-pressure electrolyzer for generating hydrogen and oxygen is provided comprising a plurality of electrolysis units arranged in series, wherein each unit comprises a body of conductive metal made up of an assembly of interconnected horizontal and vertical tubes, said body constituting an electrode which is connectable to a source of DC electricity; wherein said assembly comprises three horizontal tubes and at least two vertical tubes, the vertical tubes each accommodating an elongated central electrode and a tubular membrane, wherein each vertical tube together with the central electrode, the membrane and an electrolyte constitute an electrolytic cell, the electrolytic cells within each unit being connected in parallel, wherein each unit further comprises at least two vertical tubes not accommodating central electrodes, the first vertical tube connecting the lower horizontal tube to the first upper horizontal tube and the second vertical tube connecting the lower horizontal tube with the second upper horizontal tube.

Absstract of: WO2023083661A1

Disclosed herein is a fuel generation system comprising: a Fischer-Tropsch (FT) reactor system; and one or more supply conduits arranged to supply a carbon source and H2 to the FT reactor system; wherein: the carbon source comprises both CO and CO2 with a molar CO2/CO ratio that is at least 0.10; the supply of CO and H2 to the FT reactor system is a supply of syngas; and the FT reactor system is arranged to generate fuel in dependence on the received syngas.

Absstract of: WO2023084148A2

An electrolyzer system comprises electrolyzer elements (101) each comprising an electrolyzer stack (104) constituted by electrolysis cells. Furthermore, each electrolyzer element comprises a water inlet (106), a hydrogen separator tank (107) having a hydrogen outlet (108), an oxygen separator tank (109) having an oxygen outlet (110), and a channel system (111) for conducting electrolyte from the hydrogen separator tank and from the oxygen separator tank to the electrolyzer stack. The electrolyzer stacks of the electrolyzer elements are electrically connected to each other so that direct voltage of the electrolyzer system is a sum of direct voltages of the electrolyzer stacks of two or more of the electrolyzer elements. The water inlets, the hydrogen outlets, and the oxygen outlets of different ones of the electrolyzer elements are galvanically separated from each other. This enables the direct voltage of the electrolyzer system to have a desired value with low stray electric currents.

Absstract of: WO2023086972A1

A process and system for generating hydrogen gas are described, in which water is electrolyzed to generate hydrogen and oxygen, and a feedstock including oxygenate(s) and/or hydrocarbon(s), is non-autothermally catalytically oxidatively reformed with oxygen to generate hydrogen. The hydrogen generation system in a specific implementation includes an electrolyzer arranged to receive water and to generate hydrogen and oxygen therefrom, and a non-autothermal segmented adiabatic reactor containing non-autothermal oxidative reforming catalyst, arranged to receive the feedstock, water, and electrolyzer-generated oxygen, for non-autothermal catalytic oxidative reforming reaction to produce hydrogen. The hydrogen generation process and system are particularly advantageous for using bioethanol to produce green hydrogen.

Absstract of: WO2023085592A1

The present invention relates to a fluorine- and biphenyl-based branched copolymer polymer electrolyte membrane that is chemically stable because a polymer main chain thereof is composed of carbon single bonds, and has high hydrogen ion conductivity due to a cation exchange functional group introduced at the end of a carbon branch, and to a water electrolysis device and a fuel cell using same.

Absstract of: WO2023084511A1

The invention is directed to a system and method for for producing energy on transportation routes. A road-based Solar System for production of hydrogen and electricity is provided. This is a novel decentralized system for production, storage, energy collection, conversion is disclosed comprising: a. System and method for converting solar energy to electrical energy; b. Means and methods for storing and/or transporting said electrical energy; c. System and for converting said electrical energy to a gas fuel; d. System and method for storing or transporting said gas fuel; The modules and units for converting solar energy to electrical energy are configured to be positioned above, adjacent on or a transportation network, thereby utilising the pre-existing road system and drastically reducing wasteful land use.

Absstract of: WO2023082899A1

A hydrogen generator having a self-disinfection function. The hydrogen generator comprises an electrolysis module, a hydrogen water cup, an integrated flow channel device and an automatic channel switching device. The electrolysis module is used for electrolyzing electrolyzed water to generate hydrogen-containing gas. The hydrogen water cup is used for containing a liquid, and the hydrogen water cup is used for injecting the hydrogen-containing gas into the liquid to form a hydrogen-containing liquid. The integrated flow channel device is stacked above the electrolysis module, and comprises a gas intake flow channel, a gas output flow channel and a gas communication flow channel. The automatic channel switching device selectively communicates with the gas intake flow channel, the hydrogen water cup and the gas output flow channel, or selectively communicates with the gas intake flow channel, the gas communication flow channel and the gas output flow channel. The pH value of the electrolyzed water in the electrolysis module is 12-14.

Absstract of: WO2023082449A1

The present invention relates to the technical field of nano materials. In particular, disclosed is a preparation method for a multiphase nano heterojunction material. The method comprises the following steps: providing a substrate loaded with an NiMoO4 precursor; dissolving selenium powder in hydrazine hydrate, adding water or a sodium molybdate aqueous solution, adding the substrate loaded with the NiMoO4 precursor, and performing a reaction at a temperature of 180-200°C; and after the reaction is finished, obtaining the multiphase nano heterojunction material. The present invention also provides a four-phase 1T/2H-MoSe2-H/R-NiSe nano heterojunction material and a three-phase 1T/2H-MoSe2-H-NiSe nano heterojunction material which are prepared by means of the method, and applications of the four-phase 1T/2H-MoSe2-H/R-NiSe nano heterojunction material and the three-phase 1T/2H-MoSe2-H-NiSe nano heterojunction material as electrocatalysts for catalyzing a hydrogen evolution reaction under an alkaline condition. The multiphase nano heterojunction material prepared in the present invention has a relatively large double-layer capacitance value, a relatively large electrochemical active area and relatively small impedance, and the activity and stability of electrocatalytic hydrogen production are greatly improved.

Absstract of: WO2023082363A1

An efficient oxyhydrogen generation device for medical care. The efficient oxyhydrogen generation device mainly comprises a shell (20), an upper cover (1) and a bottom cover (33) which form a main body frame, wherein the shell (20) is composed of a front shell body and a rear shell body, the bottom cover (33) is fastened at the bottom of the shell body, and a formed space is used for accommodating an electrolytic tank (27), a water supply tank (23), a water supply tank upper cover (18) and a secondary water tank (26); the upper cover (1) is fastened on the upper part of the shell body and is provided with an atomization gas circulation part, a supply part used for filling the water supply tank with water, and a control panel (4) used for controlling an electrolytic water hydrogen and oxygen generator to operate; and oxyhydrogen generated by electrolysis of the electrolytic tank (27) sequentially enters the water supply tank (23) and the secondary water tank (26) by means of a gas guide plate (13) and is cleaned, and the cleaned gas is discharged from a gas circulation part.

Absstract of: WO2023082362A1

A hydrogen-oxygen mixed gas preparation device capable of adjusting hydrogen content and a method therefor. The hydrogen-oxygen mixed gas preparation device comprises a shell for accommodating an oxygen production device, a hydrogen production device, a control module (14), and a power supply module (19), wherein the power supply module (19) is configured to supply power to each device; the oxygen production device is configured to separate oxygen from air and store the oxygen for later use; the hydrogen production device is configured to generate hydrogen or hydrogen-oxygen mixed gas for later use by means of a water electrolysis principle; the control module (14) is configured to control and adjust the flow of the oxygen, measure the concentration of the oxygen, and adjust the flow of the hydrogen-oxygen mixed gas and the hydrogen content to a preset range; and the oxygen generated by the oxygen production device and the hydrogen generated by the hydrogen production device or the hydrogen-oxygen mixed gas are or is converged to a gas outlet (17) of the hydrogen-oxygen mixed gas preparation device through a pipeline and then discharged after humidification or discharged directly. Further disclosed is a method for using the device. The advantages such as long service life, adjustable hydrogen content, adjustable flow of the hydrogen-oxygen mixed gas are achieved.

Absstract of: US2023151502A1

The present invention relates to silver nanoclusters doped with rhodium hydride, a method of producing the same, and an electrochemical catalyst for hydrogen gas generation. The silver nanoclusters doped with rhodium hydride of the present invention have utility as an electrochemical catalyst, have a significantly low production cost compared to a platinum (Pt) catalyst according to the related art, and exhibit an effect of generating hydrogen gas equal to or greater than that of the Pt catalyst.

Absstract of: US2023149889A1

A hydrocarbon production system capable of efficiently producing hydrocarbon containing a high-calorie gas by securing hydrogen and carbon monoxide required for hydrocarbon synthesis using water and carbon dioxide as raw materials is obtained. The hydrocarbon production system includes an electrolytic reaction unit that converts water and carbon dioxide into hydrogen and carbon monoxide through an electrolytic reaction, a catalytic reaction unit that converts a product generated by the electrolytic reaction unit into hydrocarbon through a catalytic reaction, and branch paths and that branch a portion of an outlet component of the catalytic reaction unit.

Absstract of: US2023151500A1

The disclosure provides a novel electrocatalytic membrane reactor and use thereof in preparation of high-purity hydrogen. The electrocatalytic membrane reactor adopts an H-shaped electrolytic tank in which a cathode chamber is isolated from an anode chamber through a diaphragm, a membrane electrode is used as an anode, an auxiliary electrode is used as a cathode, a direct-current regulated power supply supplies a constant current, and the flow of a reaction solution is realized through a pump. In the disclosure, electrocatalysis is coupled with a membrane separation function, an oxygen evolution reaction is replaced with an organic electrochemical oxidation reaction in the anode chamber so as to reduce the overpotential of the oxygen evolution reaction, and a hydrogen evolving reaction is performed in the cathode chamber to prepare high-purity hydrogen.

Absstract of: US2023155150A1

A method of operating a solid oxide cell system comprises generating an electrochemical conversion from one of: (i) water steam H2O(g); and (ii) a mixture comprising water steam H2O(g) and carbon dioxide CO2. A quantity of at least one other substance is added into the one of the water steam H2O(g) and the mixture comprising water steam H2O(g) and carbon dioxide CO2. The at least one other substance comprises a hydrocarbon CmHn. The quantity of the at least one other substance is converted into a syngas CO+H2. An endothermic reforming of the mixed-in hydrocarbons occurs by coupling-in waste heat from the electrochemical conversion. The additional quantity of the at least one substance is added compensate for effects of a degradation of the solid oxide cells of the solid oxide cell system. A total quantity of the hydrogen H2 generated by the solid oxide cell system is kept constant.