CN112713292A - Hydrogen fuel cell membrane electrode assembly suitable for batch production and production process thereof - Google Patents
Hydrogen fuel cell membrane electrode assembly suitable for batch production and production process thereof Download PDFInfo
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- CN112713292A CN112713292A CN202011562859.3A CN202011562859A CN112713292A CN 112713292 A CN112713292 A CN 112713292A CN 202011562859 A CN202011562859 A CN 202011562859A CN 112713292 A CN112713292 A CN 112713292A
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- acid resin
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- protective film
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- 239000000446 fuel Substances 0.000 title claims abstract description 24
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 24
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 22
- 239000001257 hydrogen Substances 0.000 title claims abstract description 22
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 22
- 210000000170 cell membrane Anatomy 0.000 title claims abstract description 14
- 238000010923 batch production Methods 0.000 title abstract description 9
- 239000012528 membrane Substances 0.000 claims abstract description 61
- 239000007789 gas Substances 0.000 claims abstract description 48
- 238000009792 diffusion process Methods 0.000 claims abstract description 47
- 229920005989 resin Polymers 0.000 claims abstract description 47
- 239000011347 resin Substances 0.000 claims abstract description 47
- 230000001681 protective effect Effects 0.000 claims abstract description 45
- UQSQSQZYBQSBJZ-UHFFFAOYSA-N fluorosulfonic acid Chemical compound OS(F)(=O)=O UQSQSQZYBQSBJZ-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000000853 adhesive Substances 0.000 claims abstract description 30
- 230000001070 adhesive effect Effects 0.000 claims abstract description 30
- 239000003054 catalyst Substances 0.000 claims abstract description 21
- 238000000576 coating method Methods 0.000 claims abstract description 16
- 239000011248 coating agent Substances 0.000 claims abstract description 15
- 230000003197 catalytic effect Effects 0.000 claims description 31
- 210000004027 cell Anatomy 0.000 claims description 14
- -1 polytetrafluoroethylene Polymers 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 8
- 238000007581 slurry coating method Methods 0.000 claims description 6
- 239000011230 binding agent Substances 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 4
- 239000002002 slurry Substances 0.000 claims description 4
- 239000004696 Poly ether ether ketone Substances 0.000 claims description 3
- 239000004743 Polypropylene Substances 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 3
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 229920002530 polyetherether ketone Polymers 0.000 claims description 3
- 229920006290 polyethylene naphthalate film Polymers 0.000 claims description 3
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 3
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 3
- 229920001721 polyimide Polymers 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 238000007650 screen-printing Methods 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 238000010023 transfer printing Methods 0.000 claims description 2
- 150000003460 sulfonic acids Chemical class 0.000 abstract description 13
- 125000000542 sulfonic acid group Chemical group 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 238000004026 adhesive bonding Methods 0.000 description 3
- 239000012612 commercial material Substances 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000007767 bonding agent Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/10—Fuel cells with solid electrolytes
- H01M8/1004—Fuel cells with solid electrolytes characterised by membrane-electrode assemblies [MEA]
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/88—Processes of manufacture
- H01M4/8825—Methods for deposition of the catalytic active composition
- H01M4/8828—Coating with slurry or ink
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/88—Processes of manufacture
- H01M4/8875—Methods for shaping the electrode into free-standing bodies, like sheets, films or grids, e.g. moulding, hot-pressing, casting without support, extrusion without support
-
- 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
- Y02E60/50—Fuel cells
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Fuel Cell (AREA)
Abstract
The invention provides a hydrogen fuel cell membrane electrode assembly suitable for batch production and a processing technology thereof, wherein the hydrogen fuel cell membrane electrode assembly comprises a gas diffusion layer, a catalyst layer, a perfluorinated sulfonic acid resin membrane and a protective membrane frame; each side of the perfluorinated sulfonic acid resin film is sequentially and uniformly coated with a catalyst layer, a protective film frame and a gas diffusion layer; the inner edge of the protective film frame is 1-2mm closer to the center of the perfluorosulfonic acid resin film than the outer edge of the gas diffusion layer; the protective film frame is bonded to the perfluorinated sulfonic acid resin film through an adhesive; the gas diffusion layer is adhered to the protective film frame through an adhesive, and the coating width of the adhesive is less than 1mm and is 1-2mm away from the outer edge of the gas diffusion layer. By adopting the technical scheme of the invention, the mechanical strength and the service life of the membrane electrode assembly are ensured, and meanwhile, the membrane electrode assembly can realize batch automatic production.
Description
Technical Field
The invention relates to the field of proton exchange membrane fuel cells, in particular to a hydrogen fuel cell membrane electrode assembly suitable for batch production and a production process thereof.
Background
The hydrogen fuel cell is used as an energy conversion device, can convert the chemical reaction process between hydrogen and oxygen into electric energy for output, can generate a large amount of heat energy and water, and has the characteristic of environmental friendliness, which is more and more accepted and supported by the public.
When a Membrane Electrode Assembly (MEA) is used as a power generation unit of a fuel cell, an improper sealing structure not only affects the appearance and sealing property of the MEA, but also causes a decrease in performance and life. The patent with publication number CN201060896Y discloses a composite membrane electrode for proton exchange membrane fuel cells, in which the membrane electrode sealing structure introduced in the patent enhances the mechanical strength of the membrane electrode due to the addition of a multi-layer composite structure, but the structural characteristics of the membrane electrode sealing structure can only be manually manufactured, so that the product consistency of the membrane electrode assembly is poor, the yield is low, and the automated mass production cannot be realized.
In order to enhance the product consistency of a membrane electrode assembly (MEA for short) of a hydrogen fuel cell, improve the capacity of the MEA, and improve the yield, an MEA sealing structure suitable for mass production and a press-forming process scheme thereof need to be developed, so as to improve the capacity and the MEA production process, and improve the product consistency and reliability of the MEA.
Patent publication No. CN201060896Y discloses a proton exchange membrane fuel cell composite membrane electrode. Patent publication No. CN104577158A discloses a resin frame-equipped membrane-electrode assembly for a fuel cell.
Disclosure of Invention
According to the technical problems that the existing membrane electrode sealing structure products are poor in consistency and cannot be produced in batches and the like, the hydrogen fuel cell membrane electrode assembly suitable for batch production and the production process thereof are provided.
The technical means adopted by the invention are as follows:
a hydrogen fuel cell membrane electrode assembly suitable for batch production comprises a gas diffusion layer, a catalyst layer, a perfluorinated sulfonic acid resin membrane and a protective membrane frame; each side of the perfluorinated sulfonic acid resin film is sequentially and uniformly coated with a catalyst layer, a protective film frame and a gas diffusion layer; the inner edge of the protective film frame is 1-2mm closer to the center of the perfluorosulfonic acid resin film than the outer edge of the gas diffusion layer; the protective film frame is bonded to the perfluorinated sulfonic acid resin film through an adhesive; the gas diffusion layer is adhered to the protective film frame through an adhesive, and the coating width of the adhesive is less than 1mm and is 1-2mm away from the outer edge of the gas diffusion layer.
Further, the thickness of the perfluorosulfonic acid resin film is 8 to 25 μm, and the thickness of the gas diffusion layer is 150 to 300 μm.
Further, the protective film frame is made of a polytetrafluoroethylene film, a polyimide film, a polyethylene terephthalate film, a polyethylene naphthalate film or a polyether ether ketone film.
Further, the gas diffusion layer is the same size and is aligned with the catalyst layer on the side where it is located.
Further, the catalytic layers on both sides of the perfluorosulfonic acid resin membrane are uniform in size and aligned in position, and the catalytic layers are continuously or discontinuously coated on the perfluorosulfonic acid resin membrane.
Further, the adhesive is polypropylene, epoxy resin, EVA, silica gel or polyurethane adhesive.
Furthermore, the thickness of the protective film frame is 25-80 μm.
The invention also provides a production process of the membrane electrode assembly, which specifically comprises the following steps:
(1) coating the catalyst slurry, namely uniformly coating the prepared catalyst slurry on two sides of a coiled perfluorosulfonic acid resin film by using slit coating equipment to form a catalytic layer, wherein the catalytic layer is continuously or discontinuously coated;
(2) attaching a protective film frame to the perfluorinated sulfonic acid resin film coated with the catalytic layer, wherein one side of the protective film frame is coated with a bonding agent, the protective film frame is attached to two sides of the coiled perfluorinated sulfonic acid resin film coated with the catalytic layer on two sides by using rolling and pressing equipment, and the inner edge of the protective film frame 1 is 1-2mm closer to the center of the perfluorinated sulfonic acid resin film than the outer edge of the catalytic layer;
(3) coating a binder around the outer edge of the gas diffusion layer, wherein the coating area of the binder is 1-2mm away from the outer edge of the gas diffusion layer; the adhesive is coated by transfer printing, dispensing, screen printing or spraying;
(4) two gas diffusion layers are respectively bonded to two sides of a coiled perfluorinated sulfonic acid resin film with a protective film frame and a catalytic layer through adhesives to form a membrane electrode assembly.
Compared with the prior art, the invention has the following advantages:
the hydrogen fuel cell membrane electrode assembly suitable for batch production and the production process thereof ensure the mechanical strength and the service life of the membrane electrode assembly, simultaneously realize batch automatic production of the membrane electrode assembly, improve the production efficiency and the consistency of the membrane electrode and provide powerful support for industrialization.
Based on the reason, the invention can be widely popularized in the field of proton exchange membrane fuel cells.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of the membrane electrode assembly according to the present invention.
Fig. 2 is a schematic view of the structure of the clamp.
FIG. 3 is a schematic diagram of a catalytic layer coating process according to the present invention.
Fig. 4 is a schematic diagram of the bonding process of the protective film frame according to the present invention.
Fig. 5 is a schematic diagram of the process of applying the adhesive to the outer edge of the gas diffusion layer according to the present invention.
Fig. 6 is a schematic view illustrating a bonding process of a gas diffusion layer according to the present invention.
Fig. 7 is a schematic view of the polarization curve of the membrane electrode assembly.
Fig. 8 is a HFR curve diagram of a membrane electrode assembly.
Fig. 9 is a schematic view of a hydrogen permeation current test curve of the membrane electrode assembly.
In the figure: 1. the device comprises a protective film frame, 2, a perfluorinated sulfonic acid resin film, 3, an anode gas diffusion layer, 4, an anode catalytic layer, 5, a cathode gas diffusion layer and 6 a cathode catalytic layer; 7. a membrane electrode assembly; 8. a single cell cathode and anode end plate; 9. a single cell cathode and anode collector plate; 10. a cathode and anode graphite flow field plate; 11. an anode catalyst slurry coating head; 12. a cathode catalyst slurry coating head; 13. an upper compression roller; 14. a lower pressing roller; 15. gluing a needle head; 16. gluing a needle trajectory line; 17. and (6) gluing areas.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. Any specific values in all examples shown and discussed herein are to be construed as exemplary only and not as limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the absence of any contrary indication, these directional terms are not intended to indicate and imply that the device or element so referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore should not be considered as limiting the scope of the present invention: the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.
Example 1
As shown in fig. 1, the present invention provides a hydrogen fuel cell membrane electrode assembly suitable for mass production, which includes a gas diffusion layer, a catalyst layer, a perfluorosulfonic acid resin membrane 2, and a protective membrane frame 1; each side of the perfluorinated sulfonic acid resin membrane 2 is sequentially and uniformly coated with a catalytic layer, a protective membrane frame and a gas diffusion layer;
in the present embodiment, the catalytic layers include an anode catalytic layer 4 and a cathode catalytic layer 6, and the gas diffusion layers include an anode gas diffusion layer 3 and a cathode gas diffusion layer 5;
the inner edge of the protective film frame 1 is 1-2mm closer to the center of the perfluorosulfonic acid resin film 2 than the outer edge of the gas diffusion layer; the protective film 1 frame is bonded to the perfluorosulfonic acid resin film 2 through an adhesive; the gas diffusion layer is adhered to the protective film frame 1 through an adhesive, and the coating width of the adhesive is less than 1mm and is 1-2mm away from the outer edge of the gas diffusion layer.
The protective film frame 1 has the protective effect on the perfluorinated sulfonic acid resin film 2 and the sealing effect of isolating the gas of the cathode and the anode, and the membrane electrode assembly can effectively protect the perfluorinated sulfonic acid resin film, improves the durability of the membrane electrode and is easy to realize automatic batch manufacturing.
Further, the thickness of the perfluorosulfonic acid resin film 2 is 8 to 25 μm, and the thickness of the gas diffusion layer is 150 to 300 μm.
Further, the protective film frame 1 is made of a polytetrafluoroethylene film, a polyimide film, a polyethylene terephthalate film, a polyethylene naphthalate film or a polyetheretherketone film, or other common commercial materials.
Further, the gas diffusion layer is the same size and is aligned with the catalyst layer on the side where it is located.
Further, the catalytic layers on both sides of the perfluorosulfonic acid resin membrane 2 are uniform in size and aligned in position, and the catalytic layers are continuously or intermittently coated on the perfluorosulfonic acid resin membrane 2.
Furthermore, the adhesive is polypropylene, epoxy resin, EVA, silica gel or polyurethane adhesive, or other common commercial materials.
Further, the thickness of the protective film frame 1 is 25-80 μm.
Further, the perfluorosulfonic acid resin film 2 employs Gore
Perfluorosulfonic acid resin film, using Toray gas diffusion layers, all common commercial materials.
The invention also provides a batch production process of the membrane electrode assembly, which specifically comprises the following steps:
(1) as shown in fig. 3, catalyst slurry coating, namely uniformly coating the prepared catalyst slurry on two sides of a roll of perfluorosulfonic acid resin film 2 by using a slit coating device (comprising an anode catalyst slurry coating head 11 and a cathode catalyst slurry coating head 12) to form a catalytic layer, wherein the catalytic layer can be continuously or discontinuously coated;
(2) as shown in fig. 4, a protective film frame 1 is attached to a perfluorosulfonic acid resin film 2 coated with a catalytic layer, one side of the protective film frame 1 is coated with an adhesive, the protective film frame 1 is attached to two sides of the perfluorosulfonic acid resin film 2 coated with the catalytic layer on two sides of a roll by using a rolling and pressing device (comprising an upper press roller 13 and a lower press roller 14), and the inner edge of the protective film frame 1 is 1-2mm closer to the center of the perfluorosulfonic acid resin film 2 than the outer edge of the catalytic layer;
(3) as shown in fig. 5, the adhesive is coated around the outer edge of the gas diffusion layer, and the coated area of the adhesive is 1-2mm from the outer edge of the gas diffusion layer; the adhesive can be applied by transferring, dispensing, screen printing or spraying, for example, the adhesive can be applied by the glue applying needle 15 along a predetermined line of the glue applying needle in the glue applying region 17 of the gas diffusion layer;
(4) as shown in fig. 6, two gas diffusion layers are respectively bonded to both sides of a rolled perfluorosulfonic acid resin film 2 with a protective film frame 1 and a catalytic layer by an adhesive to form a membrane electrode assembly, and the gas diffusion layers are the same in size and aligned in position with the catalyst layers on the sides where the gas diffusion layers are located.
The following performance tests were performed in comparison with the membrane electrode assembly described herein, using a conventional membrane electrode assembly as a comparative example:
(1) testing the electrical property of the membrane electrode assembly, namely testing the polarization curve and the properties of HFR and E-IR free of the membrane electrode assembly by using a clamp battery clamp commonly used in the industry, wherein the used battery clamp is shown in figure 2 and comprises a membrane electrode assembly 7, a single cell cathode and anode end plate 8, a single cell cathode and anode current collecting plate 9 and a cathode and anode graphite flow field plate 10; the test results are shown in fig. 7 and 8; fig. 7 shows that the basic performance of the membrane electrode is not affected by the structure of the present application. Fig. 8 shows that the structure of the present application has no effect on the high-frequency impedance of the membrane electrode.
(2) And (3) accelerated life verification, namely performing a mechanochemical accelerated durability test on the membrane electrode assembly, and periodically performing a hydrogen permeation current test, wherein the data of the hydrogen permeation current test are shown in figure 9, and the result shows that the membrane electrode assembly can protect the perfluorinated sulfonic acid resin membrane, and compared with a comparative example, the service life and the reliability of the membrane cannot be reduced.
Compared with the existing products, the membrane electrode assembly and the processing method thereof are easier to realize mechanical operation and are suitable for batch production, and meanwhile, the new structure does not influence the performance and durability of the products as shown in figures 7-9.
The membrane electrode assembly structure can ensure the mechanical strength and the service life, simultaneously realize the batch automatic production of the membrane electrode assembly, improve the production efficiency and consistency of the membrane electrode and provide powerful support for industrialization.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (8)
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| CN202011562859.3A CN112713292B (en) | 2020-12-25 | 2020-12-25 | A hydrogen fuel cell membrane electrode assembly suitable for mass production and its production process |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114420984A (en) * | 2021-12-22 | 2022-04-29 | 新源动力股份有限公司 | Method for manufacturing fuel cell membrane electrode assembly |
| CN114824352A (en) * | 2022-05-05 | 2022-07-29 | 上海安池科技有限公司 | Method for manufacturing fuel cell membrane electrode with protection frame and membrane electrode |
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