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WO2025179506A1 - Unité séparateur d'électrode, procédé de préparation, unité cellule électrolytique et dispositif pour la production d'hydrogène à partir d'énergie - Google Patents

Unité séparateur d'électrode, procédé de préparation, unité cellule électrolytique et dispositif pour la production d'hydrogène à partir d'énergie

Info

Publication number
WO2025179506A1
WO2025179506A1 PCT/CN2024/079138 CN2024079138W WO2025179506A1 WO 2025179506 A1 WO2025179506 A1 WO 2025179506A1 CN 2024079138 W CN2024079138 W CN 2024079138W WO 2025179506 A1 WO2025179506 A1 WO 2025179506A1
Authority
WO
WIPO (PCT)
Prior art keywords
electrode assembly
peripheral wall
sealing frame
membrane electrode
unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/CN2024/079138
Other languages
English (en)
Chinese (zh)
Inventor
郝小罡
谢旭
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Priority to PCT/CN2024/079138 priority Critical patent/WO2025179506A1/fr
Publication of WO2025179506A1 publication Critical patent/WO2025179506A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B1/00—Electrolytic production of inorganic compounds or non-metals
    • C25B1/01—Products
    • C25B1/02—Hydrogen or oxygen
    • C25B1/04—Hydrogen or oxygen by electrolysis of water
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B11/00—Electrodes; Manufacture thereof not otherwise provided for
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
    • C25B9/17—Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof
    • C25B9/19—Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof with diaphragms
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis

Definitions

  • the present disclosure relates to the technical field of hydrogen production by electrolysis of water, and more specifically to an electrode diaphragm unit, a preparation method, an electrolyzer unit, and renewable energy hydrogen production equipment.
  • Water electrolysis hydrogen production technology uses pure water as a reactant, generating hydrogen through electrolysis in an electrolyzer.
  • the electrolyzer is a device that converts electrical energy into chemical energy through electrolysis. It primarily consists of a cell, an anode, and a cathode. When direct current passes through the cell, an oxidation reaction occurs at the anode-solution interface, and a reduction reaction occurs at the cathode-solution interface, producing the desired product.
  • a diaphragm typically separates the anode and cathode chambers.
  • the anode is typically immersed in a liquid containing ions, while the cathode sits on the other side, maintaining a certain distance and gap between them to ensure efficient electrochemical reactions.
  • optimized cell design is essential.
  • the embodiments of the present disclosure provide an electrode diaphragm unit, a preparation method, an electrolyzer unit, and a renewable energy hydrogen production device.
  • FIG1 illustrates a schematic diagram of an electrolyzer system in which various embodiments of the present disclosure may be implemented
  • FIG2A shows a schematic diagram of an electrode-diaphragm unit according to some embodiments of the present disclosure
  • FIG2B shows a schematic diagram of a sealing frame of an electrode diaphragm unit according to other embodiments of the present disclosure
  • FIG2C shows a schematic diagram of a membrane electrode assembly of an electrode diaphragm unit according to some embodiments of the present disclosure
  • FIG2D shows a schematic diagram of a sealing frame of an electrode diaphragm unit according to some embodiments of the present disclosure
  • FIG2E shows a schematic diagram of a sealing frame of an electrode diaphragm unit according to some other embodiments of the present disclosure
  • FIG3A shows a schematic diagram of an electrolytic cell unit according to some embodiments of the present disclosure
  • FIG3B shows a schematic diagram of an electrolytic cell unit according to some further embodiments of the present disclosure.
  • FIG. 3C illustrates a plate assembly of an electrolyzer unit according to some embodiments of the present disclosure. Schematic diagram
  • FIG3D shows a schematic diagram of a plate assembly of an electrolytic cell unit according to further embodiments of the present disclosure
  • FIG3E shows a schematic diagram of an electrolytic cell unit according to other embodiments of the present disclosure.
  • FIG4 shows a schematic diagram of an electrolyzer apparatus according to some embodiments of the present disclosure
  • FIG5 shows a flow chart of a method for preparing an electrode-separator unit according to some embodiments of the present disclosure.
  • the inventors of the present disclosure have discovered that during the production and assembly process of an electrolyzer used to produce hydrogen by electrolyzing water (including water molecules), the functional components inside the electrolyzer are positioned and fixed through the pole frame assembly to form a complete electrolyzer device.
  • the pole frame assembly after the frame seals the periphery of the central active area, multiple or multiple parts such as rubber gaskets are required to be combined to complete the preparation of the entire electrolyzer device.
  • the entire packaging process is complex and time-consuming. Therefore, how to improve the production efficiency of electrolyzer equipment is a problem that urgently needs to be solved.
  • the electrode diaphragm unit proposed in the embodiments of the present disclosure provides a sealing frame around the outer peripheral wall of the membrane electrode assembly, and the inner peripheral wall of the sealing frame is fixedly connected to the outer peripheral wall of the membrane electrode assembly through a material connection method.
  • the solution of the present disclosure can provide a more rigorous and reliable seal for the membrane electrode assembly, thereby improving the hydrogen production efficiency.
  • the present disclosure since the present disclosure only uses a sealing frame to seal the membrane electrode assembly, it does not require the pole frame assembly required for the installation of the electrolyzer. On the one hand, the number of parts is reduced, which to a certain extent reduces the design difficulty of the production process.
  • the gaps generated by the traditional pole frame assembly are eliminated in the electrode diaphragm unit, and the contact area between the sealing frame and adjacent functional components is increased, thereby concentrating the clamping force used to package the electrolyzer equipment and improving the sealing effect of the electrode diaphragm unit. Therefore, the hydrogen production efficiency of the electrode diaphragm unit is higher.
  • FIG1 shows a schematic diagram of an example electrolytic cell system 100 in which multiple embodiments of the present disclosure can be implemented.
  • FIG1 takes the electrolytic cell system structure of the present disclosure as an example, which can be used as an example structure of the electrolytic cell system, and does not limit the technical solution of the present disclosure.
  • the central area 101 is the electrolytic reaction area, which is used to provide active substances for reactants to perform electrochemical reactions.
  • the outer ring 102 is the sealing area of the electrolytic cell system, which is used to seal and assemble the central area 101.
  • the electrolytic cell system 100 is also provided with a plurality of pipelines 103 for providing the introduction of reactant fluids from the outer ring 102 to the central area 101 and the production of products.
  • the fluid is guided out from the central area 101 to the outer ring 102.
  • the electrolyzer system is usually placed on the ground or a similar plane such as a table, and the electrolyzer system is powered by electricity generated by conventional power supplies or clean energy.
  • the hydrogen produced by electrolysis, for example, is collected and used for other purposes, such as providing a hydrogen source for fuel cells.
  • the electrolyzer system has a large number of internal components.
  • the electrolyzer system 100 shown in Figure 1 is only a schematic diagram along a cross section parallel to the plane where the electrolyzer system is placed. In order to more clearly illustrate the technical solution of the present disclosure, the present disclosure will provide more embodiments for illustration.
  • electrolytic cell equipment has a long lifespan. Therefore, when a fault occurs inside the electrolytic cell equipment during its operation or subsequent maintenance, it takes a long time to locate the fault due to the large number of parts inside the equipment. When repairing or replacing the faulty parts, the electrolytic cell equipment must be opened, causing a large number of parts to scatter, which in turn causes reassembly to take longer. Therefore, how to improve the maintenance efficiency of electrolytic cell equipment is also a problem that needs to be solved urgently.
  • FIG2A is a schematic diagram of an electrode-diaphragm unit 200 obtained by cross-sectioning the electrolyzer system 100 shown in FIG1 along the arrow direction according to some embodiments of the present disclosure.
  • the electrode-diaphragm unit 200 includes a membrane electrode assembly 201 and a sealing frame 209.
  • the membrane electrode assembly 201 is located in the central region of the electrode-diaphragm unit 200.
  • the sealing frame 209 is disposed on the periphery of the membrane electrode assembly 201 and surrounds the outer peripheral wall 260.
  • the inner peripheral wall 230 of the sealing frame 209 and the outer peripheral wall 260 of the membrane electrode assembly 201 are fixedly connected to each other, thereby fixing the membrane electrode assembly 201 and the sealing frame 209 together to form an electrode-diaphragm unit 200.
  • the fixed connection method is a material connection.
  • an intermediate layer is provided between the inner peripheral wall 230 of the sealing frame 209 and the outer peripheral wall 260 of the membrane electrode assembly 201.
  • the intermediate layer is an adhesive that bonds the inner peripheral wall 230 to the outer peripheral wall 260.
  • the intermediate layer is a welding material, and the inner peripheral wall 230 and the outer peripheral wall 260 are welded.
  • the membrane electrode assembly 201 includes a proton exchange membrane, and the adhesive is an acidic adhesive material.
  • the membrane electrode assembly 201 includes an anion exchange membrane, and the adhesive is an alkaline adhesive material.
  • the membrane electrode assembly 201 may include other polymer materials such as polyphenylene sulfide, etc.
  • the adhesive material can be compressed polytetrafluoroethylene or other polymer film, which is not limited in the present disclosure.
  • the sealing frame 209 inside the electrode diaphragm unit and the membrane electrode assembly 201 are fixedly connected to each other via polytetrafluoroethylene or other polymer film.
  • the electrode diaphragm unit 200 disclosed herein because it only uses a sealing frame 209 to seal the membrane electrode assembly 201 and directly cooperates with other adjacent functional components, does not require a traditional pole frame assembly. Accordingly, the electrode diaphragm unit 200 does not have the gaps created by traditional pole frame assemblies, and the solution disclosed herein provides a better sealing effect for the electrode diaphragm unit 200.
  • the solution disclosed herein because the sealing frame 209 is used on the outer peripheral wall of the membrane electrode assembly 201, increases the contact area between the sealing frame 209 and the membrane electrode assembly 201, and between the sealing frame 209 and other adjacent functional components.
  • the height of the sealing frame 209 is the same as the thickness of the membrane electrode assembly 201, and the bottom surface of the sealing frame 209 is coplanar with the bottom surface of the membrane electrode assembly 201, and the top surface of the sealing frame 209 is coplanar with the top surface of the membrane electrode assembly 201.
  • the sealing frame 209 and the membrane electrode assembly 201 are directly connected by material to form an electrode diaphragm unit 200.
  • the height of the sealing frame 209 is different from the thickness of the membrane electrode assembly 201, and the bottom surface of the sealing frame 209 is coplanar with the bottom surface of the membrane electrode assembly 201, while the top surface of the sealing frame 209 is not coplanar with the top surface of the membrane electrode assembly 201.
  • the top surface of the sealing frame 209 is higher than the upper surface of the membrane electrode assembly 201.
  • the sealing frame 209 is provided with adhesive on the inner peripheral wall at a height equal to the thickness of the membrane electrode assembly 201, and is directly bonded to the outer peripheral wall 260 of the membrane electrode assembly 201 to form an electrode diaphragm unit 200.
  • An adhesive may be applied to the inner peripheral wall of the height portion of the thickness of the electrode assembly 201 and fixedly connected to other functional components adjacent to the membrane electrode assembly 201 corresponding to the height portion.
  • the shape of the outer peripheral wall 260 of the membrane electrode assembly 201 may not be a flat surface, but may have a certain shape or a regular or irregular concave and convex surface.
  • the inner peripheral wall 230 of the sealing frame 209 in the present disclosure may be designed to match the shape of the outer peripheral wall 260.
  • the height of the sealing frame 209 is different from the thickness of the membrane electrode assembly 201, and accordingly, the bottom surface of the sealing frame 209 and the lower surface of the membrane electrode assembly 201 may not be coplanar, and the top surface of the sealing frame 209 and the upper surface of the membrane electrode assembly 201 may also not be coplanar.
  • FIG2B shows a schematic diagram of the sealing frame of the electrode diaphragm unit according to other embodiments of the present disclosure.
  • the sealing frame in order to better match the shape of the outer peripheral wall of the membrane electrode assembly and the needs of actual process design and production, the sealing frame can be composed of multiple sub-sealing frames. The multiple sub-sealing frames are stacked on each other to form a complete seal on the outer peripheral wall of the membrane electrode assembly.
  • the sealing frame 209 includes a first sub-sealing frame 208 and a second sub-sealing frame 218 stacked on top of each other.
  • FIG2D is a schematic diagram of a sealing frame of an electrode diaphragm unit according to some embodiments of the present disclosure.
  • the inner peripheral walls of the multiple sub-sealing frames can also be designed to match the shape of the outer peripheral wall of the membrane electrode assembly 201. Therefore, FIG2D is a further improved design scheme of these embodiments shown in FIG2B .
  • the sealing frame 209 includes multiple sub-sealing frames stacked one above the other, and the sub-sealing frames include a first sub-sealing frame 208 and a second sub-sealing frame 218.
  • the first sub-sealing frame 208 further has a first recessed portion 220 at the connection between its inner peripheral wall and the lower surface
  • the second sub-sealing frame 218 further has a second recessed portion 221 at the connection between its inner peripheral wall and the upper surface.
  • Figure 2E shows a schematic diagram of a sealing frame for an electrode-diaphragm unit according to further embodiments of the present disclosure.
  • the shapes and thicknesses of the multiple sub-sealing frames can be designed to be identical.
  • the shapes and thicknesses of the multiple sub-sealing frames can be designed to be different.
  • Figure 2E is a further improved design of the embodiments shown in Figure 2D, in which the first sub-sealing frame and the second sub-sealing frame have different vertical heights, with the first sub-sealing frame being slightly higher than the second sub-sealing frame.
  • a recessed portion 262 is provided at the junction of the top surface 261 of the first sub-sealing frame and the inner peripheral wall to accommodate a portion of other functional components disposed adjacent to the membrane-electrode assembly 201.
  • the recessed portion 262 and the top surface 261 are fixedly connected to the bottom surfaces of these other adjacent functional components.
  • the plate assembly 300 is stacked in parallel with the membrane electrode assembly 201, and the top surface 210 of the sealing frame 209 and the bottom surface 340 of the plate assembly 300 are fixedly connected to each other. Through this arrangement disclosed in the present invention, the electrode diaphragm unit 200 and the plate assembly 300 are fixedly connected together to form an electrolyzer unit 20.
  • Figure 3B shows a schematic diagram of an electrolytic cell unit according to some other embodiments of the present disclosure.
  • the bottom surface 340 of the electrode plate assembly 300 is fixedly connected to the top surface 210 of the sealing frame 209.
  • the height value of the electrode plate assembly 300 can be designed differently according to the different requirements of the electrode diaphragm unit 200.
  • the top surface 210 of the sealing frame 209 is slightly higher than the upper surface of the membrane electrode assembly 201, and the height value of the electrode plate assembly 300 is reduced.
  • the height value that can be reduced is equivalent to, or equal to, the height value of the top surface of the sealing frame 209 above the upper surface of the membrane electrode assembly 201.
  • the top surface 210 of the sealing frame 209 is lower than the upper surface of the membrane electrode assembly 201, and the height value of the electrode plate assembly 300 is increased.
  • the height value that can be increased is equivalent to, or equal to, the height value of the top surface of the sealing frame 209 below the upper surface of the membrane electrode assembly 201.
  • the top surface 210 of the sealing frame 209 may not be a flat surface, but a surface with a certain shape or regular or irregular concave and convex surface.
  • the bottom surface 340 of the electrode assembly 300 may not be a flat surface, but a surface with a certain shape or regular or irregular concave and convex surface, and the top surface 210 of the sealing frame 209 is designed to match the shape of the bottom surface 340.
  • Figure 3B shows the connection between the top surface 210 of the sealing frame 209 and the inner peripheral wall 230, which is provided with a recessed portion 209-2 for accommodating a portion of the electrode assembly 300.
  • the recessed portion 209-2 of the sealing frame 209 and the top surface 210 are fixedly connected to the bottom surface 340 of the electrode assembly 300.
  • the membrane electrode assembly 201 , the sealing frame 209 , and the electrode plate assembly 300 are fixedly connected together to form an electrolytic cell unit 20 .
  • the sealing frame 209 may have a protrusion 209-1 extending horizontally toward the center area of the electrode diaphragm unit 200, and the upper surface 222 of the protrusion 209-1 is fixedly connected to the edge portion 260-1 on the bottom surface of the membrane electrode assembly 201 near the peripheral wall 260.
  • the vertical inner peripheral wall 230 of the sealing frame 209 is fixedly connected to the peripheral wall 260 of the membrane electrode assembly 201, and on the other hand, the upper surface 222 of the protrusion 209-1 of the sealing frame 209 is fixedly connected to the edge portion 260-1 on the bottom surface of the membrane electrode assembly 201. Therefore, the solution of the present disclosure increases the area where the sealing frame 209 and the membrane electrode assembly 201 are fixedly connected to each other.
  • the bottom surface of the sealing frame 209 is lower than the bottom surface of the membrane electrode assembly 201, while the top surface of the sealing frame 209 is slightly higher than the top surface of the membrane electrode assembly 201.
  • the present disclosure can not only fix the entire outer peripheral wall 260 of the membrane electrode assembly 201 to the inner peripheral wall 230 of the sealing frame 209, but also fix the edge portion 260-1 of the membrane electrode assembly 201 on the bottom surface close to the outer peripheral wall 260 to the protrusion 209-1 of the sealing frame 209.
  • the area of the fixed connection between the sealing frame 209 and the membrane electrode assembly 201 is larger, so that the solution of the present disclosure can more thoroughly seal the outer peripheral wall 260 of the membrane electrode assembly 201.
  • the plate assembly 300 is a multi-layer structure.
  • the plate assembly 300 is a two-layer structure, including a transmission layer facing the membrane electrode assembly and a support plate facing away from the membrane electrode assembly.
  • the plate assembly 300 is a three-layer structure, including a support plate 304 located in the middle layer and transmission layers respectively arranged on opposite sides of the support plate 304, the transmission layer including a first transmission layer 302 facing the membrane electrode assembly and a second transmission layer 305 facing away from the membrane electrode assembly.
  • the first transmission layer 302 and the second transmission layer 305 are symmetrically arranged along the center line of the support plate 304 (the dotted line in FIG3C ).
  • the support plate 304 and the first and second transmission layers 302 and 305 may have the same length along the extension direction of the support plate 304, and the transmission layers 302 and 305 may be disposed on the surface of the support plate 304 along the length direction.
  • the first transmission layer 302 is disposed on the surface of the support plate 304 facing the membrane electrode assembly
  • the second transmission layer 305 is disposed on the surface of the support plate 304 facing away from the membrane electrode assembly.
  • the first and second transmission layers 302 and 305 are symmetrically disposed along the centerline of the support plate 304 (the dotted line in FIG3D ), with the first transmission layer 302 disposed on the surface of the support plate 304 facing the membrane electrode assembly, i.e., the bottom surface of the support plate, and the second transmission layer 305 disposed on the surface of the support plate 304 facing away from the membrane electrode assembly, i.e., the top surface of the support plate.
  • the lengths of the support plate 304, the first transmission layer 302, and the second transmission layer 305 along the extension direction of the support plate 304 may differ; the lengths of the first transmission layer 302 and the second transmission layer 305 may be shorter than the length of the support plate 304.
  • the transmission layer may be disposed on the surface of the support plate 304 along its length.
  • the bottom surface of the support plate 304 is provided with a groove 303 for accommodating the first transmission layer 302
  • the top surface of the support plate 304 is provided with a groove 306 for accommodating the second transmission layer 305.
  • the bottom surface of the first transmission layer 302 may be flush with the bottom surface 340 of the support plate 304.
  • the bottom surface of the first transmission layer 302 may be lower than or higher than the bottom surface 340 of the support plate 304.
  • the bottom surface of the second transmission layer 305 may be lower than or higher than the top surface of the support plate 304, but this disclosure is not limited thereto.
  • the support plate 304 is directly connected to the first transmission layer 302 and the second transmission layer 305 through welding or crimping technology, and there are no other elements between the support plate 304 and the first transmission layer 302, and between the support plate 304 and the second transmission layer 305, so that the solution of the present disclosure has smaller flow resistance when transmitting fluid media.
  • FIG3E shows a schematic diagram of an electrolyzer unit according to another embodiment of the present disclosure, wherein a plurality of sub-sealing frames completely seal the outer peripheral wall of the membrane electrode assembly.
  • the lower surface of the first sub-sealing frame 208 is fixedly connected to the upper surface of the second sub-sealing frame 218;
  • the inner peripheral wall of the first sub-sealing frame 208 is fixedly connected to the outer peripheral wall of the first diffusion layer 206 of the membrane electrode assembly;
  • the inner peripheral wall of the second sub-sealing frame 218 is fixedly connected to the outer peripheral wall of the second diffusion layer 206 of the membrane electrode assembly;
  • the outer peripheral wall of the diffusion layer 207 is fixedly connected;
  • the first and second recesses are fixedly connected to the outer peripheral wall of the end region of the isolation layer 205.
  • first and second sub-sealing frames 208, 218 also form a seal around the outer peripheral walls of each layer structure within the membrane electrode assembly, thereby achieving a more rigid seal for the entire membrane electrode assembly.
  • the shape and size of the sealing frame can be flexibly designed, for example, the inner peripheral wall of the sealing frame is matched in shape with the outer peripheral wall of the membrane electrode assembly and fixedly connected, the inner peripheral wall or top surface of the sealing frame is matched in shape with the bottom surface of the electrode plate assembly and fixedly connected, etc., to achieve complete sealing of the membrane electrode assembly; on the other hand, a modular electrolyzer unit is formed by fixedly connecting the top surface of the sealing frame and the bottom surface of the electrode plate assembly to each other, so that the solution of the present disclosure can further improve the efficiency of fault location, maintenance, repair and reinstallation of the electrolyzer equipment, thereby improving the hydrogen production efficiency and equipment utilization.
  • FIG4 shows a schematic diagram of an electrolyzer apparatus according to some embodiments of the present disclosure.
  • a plurality of electrolyzer units 20-1, ..., 20-N are abutted against one another and releasably stacked together as shown in FIG4 to form the electrolyzer apparatus 400 of the present disclosure.
  • the individual electrolyzer units 20-1, ..., 20-N are compressed by a clamping force perpendicular to the extension direction of the membrane electrode assembly to form the electrolyzer apparatus 400.
  • the individual electrolyzer units 20-1, ..., 20-N can be compressed by other releasable means such as snaps or suction to form the electrolyzer apparatus 400.
  • the electrolyzer device 400 disclosed in the present invention uses only a sealing frame to seal the membrane electrode assembly and directly cooperates with the plate assembly, thereby reducing the gaps in the traditional pole frame assembly and increasing the contact area between the sealing frame and the membrane electrode assembly, and between the sealing frame and the plate assembly, so that the clamping force used to package the electrolyzer device 400 is more concentrated and not lost; at the same time, the present invention fixes the sealing frame to the membrane electrode assembly and the plate assembly, thereby making the connection between the plate assembly and the membrane electrode assembly tighter and more secure, and achieving a better sealing effect on the membrane electrode assembly, thereby increasing the hydrogen production efficiency.
  • the renewable energy hydrogen production equipment using the electrolyzer device 400 of the present disclosure also has a higher hydrogen production efficiency.
  • Figure 5 shows a flow chart of a method 500 for preparing an electrode diaphragm unit according to some embodiments of the present disclosure.
  • method 500 provides a membrane electrode assembly and arranges the membrane electrode assembly in the central area of the electrode diaphragm unit.
  • method 500 provides a sealing frame and arranges the sealing frame around the outer peripheral wall of the membrane electrode assembly.
  • method 500 fixes the inner peripheral wall of the sealing frame and the outer peripheral wall of the membrane electrode assembly to each other through material connection.
  • the method for preparing the electrode diaphragm unit of this embodiment is described using the electrode diaphragm unit 200 shown in Figure 2A as an example of a carrier.
  • a membrane electrode assembly 201 is provided in the central area of the electrode diaphragm unit 200 as an active area where electrochemical reactions occur.
  • a sealing frame 209 is arranged around the outer peripheral wall 260 of the membrane electrode assembly 201, wherein the inner peripheral wall 230 of the sealing frame 209 is fixedly connected to the outer peripheral wall 260 of the membrane electrode assembly 201.
  • the fixed connection method is material connection.
  • the intermediate layer is an adhesive, which bonds the inner peripheral wall 230 and the outer peripheral wall 260.
  • the intermediate layer is between the inner peripheral wall 230 of the sealing frame 209 and the outer peripheral wall 260 of the membrane electrode assembly 201.
  • the intermediate layer is a welding material, which welds the inner peripheral wall 230 of the sealing frame 209 and the outer peripheral wall 260 of the membrane electrode assembly 201.
  • the sealing frame 209 may include a fluorine-containing polymer, such as polytetrafluoroethylene, polyvinylidene fluoride, ethylene-tetrafluoroethylene copolymer, etc., which is not limited in the present disclosure.
  • a fluorine-containing polymer such as polytetrafluoroethylene, polyvinylidene fluoride, ethylene-tetrafluoroethylene copolymer, etc., which is not limited in the present disclosure.
  • a sealing frame is provided around the outer peripheral wall of the membrane electrode assembly, and the inner peripheral wall of the sealing frame is fixedly connected to the outer peripheral wall of the membrane electrode assembly by a material connection method to form an electrode diaphragm unit, and the electrode diaphragm unit and the plate assembly are further fixedly connected to each other by a material connection method, thereby forming a modular electrolyzer unit.
  • the present disclosure since the present disclosure only uses a sealing frame to seal the membrane electrode assembly and is used to directly cooperate with other functional components such as the plate assembly, the pole frame assembly that is usually required when installing the electrolyzer is not required, thereby reducing the number of parts and components.
  • the present disclosure utilizes a modular design for the electrolyzer unit, thereby improving the efficiency of fault location, repair, and reassembly, and also increasing the convenience and accuracy of reassembly, thereby further improving hydrogen production efficiency.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)

Abstract

La présente divulgation concerne une unité séparateur d'électrode, un procédé de préparation, une unité cellule électrolytique et un dispositif pour la production d'hydrogène à partir d'une énergie renouvelable. L'unité séparateur d'électrode de la présente divulgation comprend un ensemble électrode à membrane agencé dans une zone centrale de l'unité séparateur d'électrode et comprend un cadre d'étanchéité agencé autour de la paroi périphérique externe de l'ensemble électrode à membrane, la paroi périphérique interne du cadre d'étanchéité étant reliée de manière fixe à la paroi périphérique externe de l'ensemble électrode à membrane au moyen d'une liaison de matière. Dans la solution de la présente divulgation, en utilisant le cadre d'étanchéité et en reliant de manière fixe la paroi périphérique interne du cadre d'étanchéité à la paroi périphérique externe de l'ensemble électrode à membrane au moyen d'une liaison de matière, aucun espace généré par un conditionnement classique n'est présent dans l'unité séparateur d'électrode. De plus, la zone de contact entre le cadre d'étanchéité et un composant fonctionnel adjacent pendant une liaison fixe est augmentée, de telle sorte que la force de serrage pour le conditionnement d'un dispositif à cellule électrolytique est plus concentrée, et ainsi l'effet d'étanchéité de l'unité séparateur d'électrode est plus ferme, ce qui, en outre, améliore l'efficacité de production d'hydrogène. De plus, la présente divulgation, en outre, réduit le nombre de pièces, réduit le coût de production et améliore l'efficacité de production.
PCT/CN2024/079138 2024-02-28 2024-02-28 Unité séparateur d'électrode, procédé de préparation, unité cellule électrolytique et dispositif pour la production d'hydrogène à partir d'énergie Pending WO2025179506A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2024/079138 WO2025179506A1 (fr) 2024-02-28 2024-02-28 Unité séparateur d'électrode, procédé de préparation, unité cellule électrolytique et dispositif pour la production d'hydrogène à partir d'énergie

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2024/079138 WO2025179506A1 (fr) 2024-02-28 2024-02-28 Unité séparateur d'électrode, procédé de préparation, unité cellule électrolytique et dispositif pour la production d'hydrogène à partir d'énergie

Publications (1)

Publication Number Publication Date
WO2025179506A1 true WO2025179506A1 (fr) 2025-09-04

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6475656B1 (en) * 1997-01-29 2002-11-05 Proton Motor Fuel Cell Gmbh Membrane-electrode unit with an integrated wear ring, and method of making the same
US20050014056A1 (en) * 2003-07-14 2005-01-20 Umicore Ag & Co. Kg Membrane electrode unit for electrochemical equipment
US20100047649A1 (en) * 2006-08-03 2010-02-25 Hideki Yamada Membrane Electrode Assembly, Method For Producing The Same, and Solid Polymer Fuel Cell Using The Same
CN115522217A (zh) * 2022-10-21 2022-12-27 上海氢晨新能源科技有限公司 一种pem水电解制氢膜电极-绝缘边框一体化结构
DE202023106498U1 (de) * 2023-11-07 2024-01-19 Sinohykey Technology Guangzhou Co. Ltd. Dichtungseinheit für eine Membranelektrode zur Wasserstofferzeugung durch Wasserelektrolyse und Vorrichtung zur Wasserstofferzeugung durch Wasserelektrolyse

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6475656B1 (en) * 1997-01-29 2002-11-05 Proton Motor Fuel Cell Gmbh Membrane-electrode unit with an integrated wear ring, and method of making the same
US20050014056A1 (en) * 2003-07-14 2005-01-20 Umicore Ag & Co. Kg Membrane electrode unit for electrochemical equipment
US20100047649A1 (en) * 2006-08-03 2010-02-25 Hideki Yamada Membrane Electrode Assembly, Method For Producing The Same, and Solid Polymer Fuel Cell Using The Same
CN115522217A (zh) * 2022-10-21 2022-12-27 上海氢晨新能源科技有限公司 一种pem水电解制氢膜电极-绝缘边框一体化结构
DE202023106498U1 (de) * 2023-11-07 2024-01-19 Sinohykey Technology Guangzhou Co. Ltd. Dichtungseinheit für eine Membranelektrode zur Wasserstofferzeugung durch Wasserelektrolyse und Vorrichtung zur Wasserstofferzeugung durch Wasserelektrolyse

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