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575
results.
Updated on
24/12/2025 [07:09:00]
Results 550 to 575 of 575
Absstract of: KR20250153897A
본 발명은 수전해 장치에서 생성된 수소와 산소를 수소연료전지 시스템으로 공급하여 전기를 생성하고, 이 과정에서 생성된 물을 다시 수전해 장치로 공급하여 수전해에 사용하는 형태로서 물의 공급없이 또는 최소한의 공급을 통해 전기를 생산하는 순환식 수소생성 및 발전장치를 제공한다.
Absstract of: KR20250154063A
본 발명은 촉매 지지체를 준비하는 제1단계; 촉매 활성금속 용액을 준비하는 제2단계; 상기 촉매 지지체에 촉매 활성금속 용액을 스프레이하는 제3단계; 촉매 활성금속 용액이 스프레이된 촉매 지지체를 가열 건조하는 제4단계;순으로 된 에그쉘 구조 촉매의 제조방법에 관한 것으로, 촉매 활성금속 용액을 촉매 지지체 표면에 스프레이하고 효과적으로 가열 건조함으로써 촉매 입자의 표면 부근에 활성금속 성분이 두루 퍼져 있는 구조를 갖는 에그쉘 구조 촉매의 제조방법에 대한 것이다. 본 발명에 의하면, 촉매 활성금속 용액을 촉매 지지체 표면에 스프레이하고 효과적인 건조과정으로 에그쉘 구조 촉매의 제조가 가능하여 촉매 활성금속이 촉매 입자의 표면에 두루 퍼지도록 할 수 있어 값비싼 촉매 활성금속을 적게 써도 활성이 유지되어 경제성이 좋은 효과가 있다.
Absstract of: CN120844143A
The preparation method comprises the following steps: by adopting a hydrothermal coupling high-temperature calcination method, dipping carbon cloth into a thiourea and urea mixed aqueous solution containing cobalt salt, chromium salt and nickel salt, and carrying out hydrothermal reaction at 100-300 DEG C; the Co and Cr co-doped NiS compound Co and Cr-NiS/CC is prepared by carrying out hydrothermal reaction on the NiS and the NiS and then calcining a hydrothermal reaction product at a high temperature in an inert atmosphere of 300-500 DEG C. The electronic structure of NiS is effectively regulated and controlled through cooperative doping of Co and Cr, the UOR speed step energy barrier is remarkably reduced, the catalytic activity and stability of the catalyst are greatly improved, and the Co and Cr co-doped NiS compound Co and Cr-NiS/CC can be directly used as a UOR working electrode of an anode for hydrogen production by electrolysis of water and has a wide application prospect. Excellent electrochemical reaction activity is shown.
Absstract of: CN120844149A
The invention relates to a flow rate control device for an electrolytic bath, and relates to the technical field of water electrolysis hydrogen production, the flow rate control device comprises a support frame, the support frame is provided with a through groove in a penetrating manner, an elastic membrane is arranged in the through groove, one side of the elastic membrane is a flow channel, the other side of the elastic membrane is a pressure cavity, and a corrugated pipe compensator and a honeycomb microporous membrane are arranged in the pressure cavity; one side of the honeycomb microporous membrane is attached to the side, away from the flow channel, of the elastic membrane, the other side of the honeycomb microporous membrane is fixedly connected with one end of the corrugated pipe compensator, the other end of the corrugated pipe compensator is fixedly connected with the supporting frame, a plurality of honeycomb holes are formed in the honeycomb microporous membrane in a penetrating mode and communicate with the corrugated pipe compensator, and the corrugated pipe compensator is fixedly connected with the supporting frame. The honeycomb holes and the corrugated pipe compensator are filled with nitrogen. The method has the effect of reducing the energy consumption of hydrogen production through water electrolysis.
Absstract of: CN120839056A
The invention relates to the technical field of electrochemistry, in particular to a system for preparing superfine nanometer sponge platinum and a process method of the system.The system comprises a system body, the system body comprises a reaction kettle, the feeding end of the reaction kettle is provided with a raw material module and a batching module in a matched mode, and the feeding end of the reaction kettle is further provided with a hydrazine hydrate module; a plurality of groups of nitrogen modules are arranged in the system body, the reaction kettle is also connected with a cooling water module and a heating oil module, the reaction kettle is connected with a catalyst drying module, and the nitrogen modules comprise a plurality of groups of nitrogen storage tanks; according to the method, the specific reducing agent is used for reducing the chloroplatinic acid, the electrocatalyst with fine particles can be successfully prepared, the defect of performance of the catalyst prepared through a traditional method is effectively overcome, and powerful support is provided for improving the efficiency of preparing hydrogen through proton exchange membrane water electrolysis.
Absstract of: CN120844104A
The invention discloses a positive-pressure explosion-proof hydrogen generation system and method. The system comprises a cavity and a positive-pressure purging device, the cavity comprises a positive pressure anti-explosion area and a non-anti-explosion area; the positive pressure explosion-proof area is provided with a hydrogen generator and an oxygen alarm device; the non-explosion-proof area is provided with a water tank used in cooperation with the hydrogen generator. The oxygen alarm device is used for detecting the oxygen concentration so as to monitor whether the hydrogen generator leaks or not; and the positive pressure purging device is used for controlling the clean inert protective gas to enter the cavity, so that the pressure in the cavity is higher than the pressure outside the cavity, a pressure environment meeting safe operation is formed, and pressure relief in the cavity is realized when the pressure in the cavity is higher than a set threshold value. According to the invention, full-process automatic management of hydrogen production, hydrogen supply and a safety state can be realized, and the operation safety and reliability in a dangerous environment are greatly improved.
Absstract of: CN120838441A
The invention discloses a Weel semimetal surface modification method for improving catalytic performance, which comprises the following steps: putting flaky niobium foil and arsenic powder as raw materials in a quartz tube, and adding iodine powder as a transport agent; the method comprises the following steps: putting a quartz tube into a beaker filled with dry ice and an acetone solution, vacuumizing the quartz tube, sealing the quartz tube, putting the quartz tube into a tubular furnace, heating to 1000-1100 DEG C, keeping the temperature, and obtaining an NbAs crystal material after the reaction is completed; and respectively putting the NbAs crystal material into quartz tubes filled with S, Se or Te simple substances, heating to 800-900 DEG C, preserving heat, and obtaining the S, Se or Te NbAs crystal material after the reaction is completed. According to the invention, a chemical vapor transport method is adopted for growth in a high-vacuum closed environment, and the synthesized crystal is high in crystallinity, good in quality and high in repeatability. Compared with a pure NbAs sample, the catalytic hydrogen evolution performance of the sample is improved after reaction again.
Absstract of: US2023024948A1
A method for producing metal borohydride, Me(BH4)n, from metal boron oxide, Me(BO2)n, in which Me is a metal or a molecule that shows metal-like behaviour and can act as a metal, and n is an integer number that can be associated with the valence of the metal, wherein in a first fluidized bed step the metal boron oxide is provided in a first fluidized bed. The first fluidized bed is fluidized using a gas selected from at least one of nitrogen, N2, gas and a noble gas, optionally the noble gas being selected from at least one of helium, He; neon, Ne; argon, Ar; and xenon, Xe, under such circumstances, especially pressure and temperature, that oxygen atoms are removed from the metal boron oxide to provide metal boron, MeBn, particles, possibly ions. In a subsequent second fluidized bed step the metal boron particles are provided in a second fluidized bed that is fluidized using hydrogen, H2, gas under such circumstances that hydrogen chemically reacts with the metal boron particles to provide metal borohydride.
Absstract of: CN120858203A
The invention relates to a bipolar plate (34) for an electrolysis device (44), said bipolar plate (34) comprising a plurality of medium channels (36): at least one H2O inlet port (38), one H2O/O2 outlet port (40) and one H2 outlet port (42). Bipolar plates (34) implemented as repeating components (48) are accommodated in an electrolysis cell stack (46) of the electrolysis device (44), said bipolar plates sealing the ports (38, 40, 42) one above the other, and by means of which a plug-in seal (56) is fixed in an X/Y plane (86) between every two bipolar plates (34) which lie one above the other. The invention further relates to the use of the bipolar plate (34) in an electrolysis cell stack (46) of an electrolysis device (44).
Absstract of: CN120844146A
The invention relates to an Nb2O5 microflower-loaded Ru catalyst based on a Lewis acid activation mechanism and a preparation method and application thereof, and belongs to the technical field of electrode material preparation. The preparation method of the Nb2O5 microflower-loaded Ru catalyst based on the Lewis acid activation mechanism comprises the following steps: (1) dissolving niobium oxalate and ammonium carbonate in water, violently stirring to obtain a mixed solution A, carrying out a hydrothermal reaction on the mixed solution A, sequentially washing and drying after the reaction is finished, and then calcining to obtain niobium pentoxide; and (2) mixing niobium pentoxide, ruthenium trichloride and water, violently stirring to obtain a mixed solution B, carrying out a hydrothermal reaction on the mixed solution B, sequentially washing and drying after the reaction is finished, and then carrying out annealing treatment to obtain the Nb2O5 microflower loaded Ru catalyst. The prepared catalyst shows excellent electrochemical performance in an alkaline electrolysis seawater hydrogen evolution reaction.
Absstract of: CN120842640A
The invention relates to an anion exchange membrane based on isopropyl piperidone and biphenyl and a preparation method of a membrane electrode, the preparation method comprises the following steps: respectively dissolving an aromatic monomer and IPD in a first solvent, and mixing to obtain a mixed solution, the aromatic monomer being BP or TP; dropwise adding an acidic initiator into the mixed solution for reaction at the reaction temperature of-5 DEG C to 0 DEG C to obtain a nitrogen heterocyclic ring polymer intermediate; adding a quaternization reagent into the nitrogen-containing heterocyclic ring polymer intermediate to realize quaternization modification of nitrogen atoms to obtain a quaternization ionomer; and forming a film to obtain the AEM film. The preparation method of the membrane electrode comprises the following steps: respectively forming a cathode catalyst layer and an anode catalyst layer on two opposite sides of an AEM membrane through ultrasonic spraying to obtain the MEA. The AEM membrane and the MEA obtained according to the invention have the characteristics of excellent stability and high water electrolysis performance, can significantly improve the efficiency and durability of AEMWE, and are suitable for the fields of hydrogen production by water electrolysis and the like.
Absstract of: CN118461035A
The invention provides an electrode catalyst and a preparation method and application thereof, the electrode catalyst comprises a nanosheet catalyst structure, a plurality of holes are formed in the surface of the nanosheet catalyst structure, and the size of the holes is smaller than 80 nm. According to the electrode catalyst and the preparation method and application thereof, electrode catalysts of different structures are obtained, the specific surface area of the electrode catalyst is increased, and active sites are increased, so that the catalytic efficiency is improved, and the production cost is reduced.
Absstract of: CN120844106A
The invention belongs to the technical field of electrolysis, and provides a method for reducing energy consumption of a water hydrogen production electrolytic cell based on falling film type liquid inlet, the falling film type electrolytic cell and an electrolysis system. And hydrogen and oxygen generated by the reaction escape from a liquid phase in time and enter a gas phase, so that formation and accumulation of bubbles on the surface of the electrode are remarkably reduced, and meanwhile, the gas content of the electrolyte is reduced, so that the local overpotential is reduced, and the electric energy consumption is reduced. The water hydrogen production electrolytic cell for implementing the method is simple in structure improvement, convenient to maintain and convenient to popularize and use.
Absstract of: CN120844139A
The invention relates to a preparation method of an amorphous RuNi alloy electrocatalyst, which comprises the following steps: uniformly dispersing graphene oxide in H2O to form a GO suspension, carrying out ultrasonic treatment for 20-30 minutes, adding RuCl3 and NiCl2 into the GO suspension, and stirring for 3-5 hours; and adding a sodium borohydride solution with the concentration of 0.1 M, stirring for 20-30 minutes at normal temperature, standing for 2-4 hours, and sequentially filtering, washing with deionized water and freeze-drying to obtain the amorphous RuNi/rGO catalyst. The preparation method is simple and rapid, and the obtained catalyst has efficient catalytic activity, shows ultralow overpotential in an alkaline medium, has better hydrogen production performance, can be applied to the fields of fuel cells, hydrogen energy preparation, nano materials, hydrogen storage and the like, and provides a thought for design and large-scale use of subsequent hydrogen production catalysts.
Absstract of: CN120844119A
The invention relates to a reverse current erosion resistant cathode coating preparation method and a cathode. The method comprises the following steps: S1, pretreating a cathode base material; s2, loading a precursor of an N-type semiconductor on the surface of the cathode base material, and sintering to form an N-type semiconductor coating on the surface of the cathode base material; s3, loading a precursor of a P-type semiconductor on the surface of the N-type semiconductor coating, and sintering to form a P-type semiconductor coating on the surface of the N-type semiconductor coating; and S4, firing the material obtained in S3 to obtain the reverse current erosion resistant cathode coating. According to the invention, the technical problem that the cathode coating is easy to dissolve and lose due to reverse current in the existing water electrolysis hydrogen production technology or chlor-alkali electrolysis technology is solved.
Absstract of: US2025333862A1
A solid oxide electrolysis cell includes an oxygen electrode, a fuel electrode, and an electrolyte interposed between the oxygen electrode and the fuel electrode. The oxygen electrode comprises an oxygen electrode carrier comprising internal pores, and an oxygen electrode catalyst supported in the internal pores, and having a perovskite single-phase structure. The fuel electrode comprises a fuel electrode carrier and a fuel electrode catalyst supported on the fuel electrode carrier.
Absstract of: TW202446469A
The invention relates to a thermal inverter (1, 2) for generating from a parent compound a first fluid of first molecules (H2) with a first molecular weight and a second fluid of second molecules (O2) with a second molecular weight, whereby the first molecular weight of the first molecules (H2) is less than the second molecular weight of the second molecules (O2). In a reaction device (1) the parent compound is decomposed into a mixture compound of the first molecules (H2) and the second molecules (O2).In order to improve the efficiency of such a thermal inverter the invention proposes a gas separator device (2) comprising a mixture inlet (26) for the mixture compound of the first and the second molecules at a bottom section (24) of the gas separator device (2) and a first and a second outlet (2() at a top section (25) of the gas separator device (2), the first outlet (27) providing substantially the first molecules (H2) and the second outlet (28) providing substantially the second molecules (O2), the gas separator device (2) further comprising guiding elements (6) for guiding the first and second molecules (H2, O2) from the mixture inlet (26) towards the first and second outlet (27, 28) in a coiled path, wherein the coiled path is confined by a sidewall (29).
Absstract of: CN120858201A
An electrolytic cell (1) is provided with a metal support (10) and a cell main body (20). The metal support (10) further has an air-permeable region (10a) in which a plurality of communication holes (11) are formed, and an air-impermeable region (10b) surrounding the air-permeable region (10a). A hydrogen electrode layer (6) of a cell main body section (20) has a first region (6a) formed on a gas-permeable region (10a), and a second region (6b) formed on a gas-impermeable region (10b). The average particle diameter of Ni contained in the second region (6b) is smaller than the average particle diameter of Ni contained in the first region (6a).
Absstract of: CN120844138A
The invention discloses a heterostructure electrocatalyst with ruthenium monatomic synergistic sulfur vacancy regulation and control as well as a preparation method and application of the heterostructure electrocatalyst. The heterostructure electrocatalyst is a Ru-VS-MoS2/NixSy (at) CC self-supporting electrode, cC represents carbon cloth, and the electrocatalyst takes a carbon cloth substrate as a conductive self-supporting framework and has a three-dimensional fiber structure; moS2/NixSy grows on the surface of the carbon cloth in situ to form a MoS2/NixSy heterostructure, and MoS2 is rich in sulfur vacancies VS and defects so as to enhance the catalytic activity of a basal plane; the MoS2/Ni < x > S < y > heterostructure is in a nano sheet shape; ruthenium single atoms are anchored at sulfur vacancies or defect sites of MoS2 and are used as active catalytic components. According to the invention, atomic dispersion of active sites and electronic structure optimization are accurately controlled, the use amount of noble metal is greatly reduced while excellent catalytic activity is maintained, the application of an industrial electrolytic cell is realized in combination with a preparation process capable of being amplified, and a breakthrough solution is provided for commercial application of a water electrolysis hydrogen production technology.
Absstract of: CN120844141A
The invention belongs to the technical field of hydrogen production through water electrolysis, and particularly relates to an alkaline hydrogen evolution catalyst for hydrogen production through water electrolysis and a preparation method of the alkaline hydrogen evolution catalyst. The alkaline hydrogen evolution catalyst is a MoPt2-Mo2C/NC nano composite material, a carrier is a nitrogen-doped carbon material, and a catalytic active component is MoPt2-Mo2C with a heterostructure; wherein the platinum-molybdenum intermetallic compound and the molybdenum carbide are uniformly distributed on the carrier nitrogen-doped carbon material; and a heterostructure is formed between the platinum-molybdenum intermetallic compound and the molybdenum carbide. The intermetallic compound and the molybdenum carbide are combined to form a heterostructure, the advantages of the intermetallic compound and the molybdenum carbide are combined, and the water dissociation kinetics is accelerated by utilizing the coordination of the ordered crystal lattice of the intermetallic compound and the electron coupling effect of the heterointerface of the intermetallic compound and the molybdenum carbide, so that the alkaline hydrogen evolution performance is further improved.
Absstract of: JP2025162706A
【課題】アンモニアの合成効率を上げることができる合成装置を提供する。【解決手段】合成装置は、窒素を含む原料ガスが供給される反応場にプラズマを発生するプラズマ発生装置と、水蒸気を分解して反応場に水素を発生する電気化学セルと、電気化学セルを作動した後、プラズマ発生装置を作動する制御装置と、を備える。制御装置は、反応場が条件を満たしたと判断される場合にプラズマ発生装置を作動しても良い。制御装置は、水素センサ、水蒸気センサ、計時装置または計測装置の電気信号に基づいてプラズマ発生装置を作動しても良い。【選択図】図１
Absstract of: JP2025162704A
【課題】安定してアンモニアを生成できる合成装置を提供する。【解決手段】合成装置は、筒状の電解質と、電解質の内側に配置されたカソードと、電解質の外側に配置されたアノードと、を備える電気化学セルと、カソードと間隔をあけて電気化学セルの内側に配置された電極を含む筒状の電極部材を含み、電極とカソードとの間にプラズマを発生するプラズマ発生装置と、を備え、原料ガスは電極部材の内側の第１の空間に供給され、電気化学セルは電極部材とカソードとの間の第２の空間に水素を発生し、第１の空間と第２の空間とをつなぐ孔が電極に複数設けられ、カソードはプラズマ発生装置のアース電極を兼ねる。【選択図】図１
Absstract of: CN120391000A
An electrochemical cell system (100) comprising: an electrochemical cell arrangement (10); a control unit (20) configured to operate the electrochemical cell arrangement (10) only as an electrolytic cell or as a fuel cell; a heating unit (40) located outside the electrochemical cell arrangement (10), the heating unit being thermally coupled to the electrochemical cell arrangement (10) and the heating unit being configured to alternately store heat from the electrochemical cell arrangement (10) to the heating unit (40) and supply heat from the heating unit (40) to the electrochemical cell arrangement (10); and a transfer arrangement (30) configured to alternately transfer heat from the electrochemical cell arrangement (10) to the heating unit (40) and from the heating unit (40) to the electrochemical cell arrangement (10).
Absstract of: CN120838416A
The invention discloses a nickel-based amorphous alloy catalyst as well as a preparation method and application thereof. The nickel-based amorphous alloy catalyst comprises a porous nickel-based amorphous alloy; the nickel-based amorphous alloy catalyst comprises a metal element and a non-metal element, the metal element comprises nickel, and the non-metal element comprises at least one of boron or phosphorus. The nickel-based amorphous alloy catalyst with the high specific surface area has a porous structure, is high in specific surface area, provides sufficient pore space and rich activation sites, and shows excellent catalytic performance in the fields of hydrogenation, hydrogen production and the like, the preparation method of the catalyst is simple and easy to control, conditions are mild, and large-scale preparation of the catalyst is easy to realize.
Nº publicación: CN120857975A 28/10/2025
Applicant:
HD \u73B0\u4EE3 OILBANK \u682A\u5F0F\u4F1A\u793E
Absstract of: WO2024190982A1
Disclosed are a catalyst for the dehydrogenation of ammonia, a manufacturing method therefor, and a method for producing hydrogen using same. The disclosed catalyst for the dehydrogenation of ammonia comprises clay and an alkali metal and ruthenium supported on the clay.
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