CN117133956A - Proton exchange membrane preparation device and preparation method - Google Patents

Proton exchange membrane preparation device and preparation method Download PDF

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Publication number
CN117133956A
CN117133956A CN202311403140.9A CN202311403140A CN117133956A CN 117133956 A CN117133956 A CN 117133956A CN 202311403140 A CN202311403140 A CN 202311403140A CN 117133956 A CN117133956 A CN 117133956A
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China
Prior art keywords
film
backing
roller
membrane
proton exchange
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CN202311403140.9A
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CN117133956B (en
Inventor
陈杰
徐斌
钮浥林
张玲
刘静
赖志勇
李炳键
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Jiangsu Yuanhydrogen New Energy Technology Co ltd
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Jiangsu Yuanhydrogen New Energy Technology Co ltd
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Priority to CN202311403140.9A priority Critical patent/CN117133956B/en
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00Fuel cells; Manufacture thereof
    • H01M8/10Fuel cells with solid electrolytes
    • H01M8/1016Fuel cells with solid electrolytes characterised by the electrolyte material
    • H01M8/1018Polymeric electrolyte materials
    • H01M8/1069Polymeric electrolyte materials characterised by the manufacturing processes
    • H01M8/1086After-treatment of the membrane other than by polymerisation
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00Fuel cells; Manufacture thereof
    • H01M8/10Fuel cells with solid electrolytes
    • H01M8/1016Fuel cells with solid electrolytes characterised by the electrolyte material
    • H01M8/1018Polymeric electrolyte materials
    • H01M8/1069Polymeric electrolyte materials characterised by the manufacturing processes
    • H01M8/1086After-treatment of the membrane other than by polymerisation
    • H01M8/1093After-treatment of the membrane other than by polymerisation mechanical, e.g. pressing, puncturing
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30Hydrogen technology
    • Y02E60/50Fuel cells

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

The application discloses a preparation device and a preparation method of a proton exchange membrane, wherein a base membrane and a backing membrane are moved to a vacuum adsorption roller, the base membrane and the backing membrane are tightly adhered by vacuum adsorption, the backing membrane is peeled off from the base membrane by a backing wind-up roller when the base membrane and the backing membrane pass through another vacuum adsorption roller after the base membrane and the backing membrane are tightly adhered, a coating unit comprises an upper coating head for coating the front surface of the base membrane when the base membrane and the backing membrane are tightly adhered and a lower coating head for coating the back surface of the base membrane after the backing membrane is peeled off from the base membrane, the proton exchange membrane is obtained by drying the base membrane after the coating, and finally the proton exchange membrane is compositely wound with a protective membrane. Through the mode, the preparation device and the preparation method of the proton exchange membrane simplify the process, avoid the influence of the backing membrane on the proton exchange membrane, enable the quality of the proton exchange membrane to be controllable, facilitate the realization of large-scale production, and have high efficiency.

Description

Proton exchange membrane preparation device and preparation method
Technical Field
The application relates to the field of proton exchange membranes, in particular to a preparation device and a preparation method of a proton exchange membrane.
Background
The proton exchange membrane acts as a solid electrolyte in the operation of the hydrogen fuel cell system, and is capable of transporting protons from the anode to the cathode while acting as a separator to prevent mixing of the anode and cathode gases. Proton exchange membranes are currently gradually tending to develop in a thinner direction based on cost control and electrical performance considerations. Based on the durability requirements in the application, on a thin basis, the film is usually in the form of a composite film lined with a skeletal film to ensure the service life of the film.
The existing proton exchange membrane composite membrane of the fuel cell is generally produced by carrying a carrier membrane, coating and compositing the carrier membrane, and conveying the carrier membrane through processes such as a drying tunnel, a compression roller and the like. The mode can meet the mass production of proton exchange membranes to a certain extent, but because of the existence of the carrier band membrane, new problems are often introduced: 1. the proton exchange membrane slurry is paved on the carrier band membrane, and all defects on the carrier band membrane are mapped on the proton exchange membrane, so that the same problems exist in the proton exchange membrane product due to the problems of poor thickness uniformity, poor surface flatness and the like; 2. the conventional release carrier tape membrane often needs further treatment before use so as to facilitate the spreading of slurry, the process steps are added, new variables are introduced, and the problem that a centrifugal layer is transferred to a proton exchange membrane exists; 3. the common carrier film such as PET and the like cannot be suitable for the production of proton exchange films under high temperature conditions, the deformation rate of the carrier film is high under the high temperature environment for a long time, and the deformation defect of the loaded proton exchange film is caused by deformation.
Disclosure of Invention
The application mainly solves the technical problems of providing a preparation device and a preparation method of a proton exchange membrane, simplifying the process, avoiding the influence of a backing membrane on the proton exchange membrane, enabling the quality of the proton exchange membrane to be controllable, facilitating the realization of large-scale production and having high efficiency.
In order to solve the technical problems, the application adopts a technical scheme that: the utility model provides a proton exchange membrane's preparation facilities, including unreel the base film unreel the roller, unreel the backing film backing unreel roller, the backing wind-up roller of rolling backing film and coating subassembly, base film and backing film remove to the vacuum adsorption roller on, paste base film and backing film closely through the vacuum adsorption, follow the backing film and peel off from the base film by the backing wind-up roller when base film and backing film pass through another vacuum adsorption roller after pasting, the coating subassembly includes and carries out the upper coating head of coating to the base film front when base film and backing film paste closely and carries out the lower coating head of coating to the base film back after the backing film is peeled off from the base film.
In a preferred embodiment of the application, the upper coating head is located above the left side vacuum suction roll which sticks the base film and the backing film together and allows the coating to penetrate into the base film under vacuum.
In a preferred embodiment of the present application, the lower coating head is located on one side of the right vacuum suction roll and below the base film.
In a preferred embodiment of the present application, the backing unreeling roller and the backing reeling roller are located below the vacuum adsorption rollers, and the vacuum adsorption rollers are arranged at intervals.
In a preferred embodiment of the present application, a heating assembly is further disposed behind the coating assembly, and the coated base film is dried by the heating assembly to obtain the proton exchange membrane.
In a preferred embodiment of the application, a winding power roller positioned behind the heating assembly sends the proton exchange membrane into a coating film winding roller, one side of the winding roller is provided with a backing membrane unreeling roller, and the backing membrane unreeling roller sends the protective membrane into the coating film winding roller and is compounded with the proton exchange membrane.
In order to solve the technical problems, the application adopts another technical scheme that: the preparation method of the proton exchange membrane adopts the preparation device and comprises the following steps:
a. respectively unreeling the base film and the backing film to a vacuum adsorption roller, flatly attaching the backing film to the lower part of the base film on the vacuum adsorption roller so as to form a composite film, spraying the front surface of the base film when the base film is attached to the backing film, and accelerating the paint to permeate into micropores of the base film through negative pressure of the vacuum adsorption roller;
b. the composite film is moved to another vacuum adsorption roller, the backing film is independently rolled after being stripped from the back surface of the base film, and then the back surface of the base film is sprayed;
c. and drying the coated base film to remove the solvent to obtain a proton exchange film, and finally, compounding and rolling the proton exchange film and the protective film.
In a preferred embodiment of the present application, the coated base film in step c is drawn by the chain clip through hot air heating and bottom plate heating in the heating assembly to remove the solvent.
In a preferred embodiment of the present application, in the step c, the proton exchange membrane is sent to the winding roller through the winding power roller, the protecting membrane is sent to the winding roller through the protecting membrane unreeling roller, and the proton exchange membrane and the protecting membrane are compounded after being sent to the winding roller.
The beneficial effects of the application are as follows: the preparation device and the preparation method of the proton exchange membrane can automatically regulate and control the forming process temperature of the proton exchange membrane, are not limited by the temperature resistance level of the carrier membrane, and enable the forming temperature of the proton exchange membrane to be under the optimal working condition, thereby improving the performance of the proton exchange membrane and achieving the purposes of improving the durability of the proton exchange membrane and prolonging the service life.
According to the preparation device and the preparation method of the proton exchange membrane, the fluctuation interference in the coating transmission process is avoided by adopting a vacuum adsorption mode, the slurry is more favorable for being infiltrated into the original membrane, the pore filling in the original membrane is more sufficient, the combination of the resin and the original membrane is tighter, the gas permeability of the prepared proton exchange membrane is smaller, the strength is higher, and the accurate control of the uniformity of the coating thickness is realized.
Drawings
For a clearer description of the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the description below are only some embodiments of the present application, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art, wherein:
FIG. 1 is a schematic diagram of a proton exchange membrane preparation apparatus according to the present application;
FIG. 2 is a schematic structural diagram of a proton exchange membrane preparation apparatus;
the components in the drawings are marked as follows: 1. unreeling roller 2, upper coating head 3, vacuum adsorption roller 4, backing unreeling roller 5, backing wind-up roller 6, heating component 7, chain clip 8, wind-up power roller 9, backing film unreeling roller 10, coating wind-up roller 11, lower coating head.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below. The structures, proportions, sizes, etc. shown in the drawings are shown only in connection with the present disclosure, and are not intended to limit the scope of the application, since any modification, variation in proportions, or adjustment of the size, etc. of the structures, proportions, etc. should be considered as falling within the spirit and scope of the application, without affecting the effect or achievement of the objective. Also, the terms "upper", "lower", "left", "right", "middle", and the like are used herein for descriptive purposes only and are not intended to limit the scope of the application for modification or adjustment of the relative relationships thereof, as they are also considered within the scope of the application without substantial modification to the technical context.
Referring to fig. 1 and 2, a proton exchange membrane preparation apparatus includes an unreeling roller 1 for unreeling a base membrane, a backing unreeling roller 4 for unreeling a backing membrane, a backing wind-up roller 5 for winding the backing membrane, and a coating assembly.
The base film is unreeled by the unreeling roller 1, the backing film is unreeled by the backing unreeling roller 4, the base film and the backing film simultaneously move to the vacuum adsorption roller 3, at the moment, the vacuum adsorption roller 3 pumps the space below the backing film into a micro-vacuum environment, and the backing film is flatly attached below the base film on the vacuum adsorption roller 3 so as to form the composite film.
The application adopts a slit coating mode which is conventional in the art to carry out coating, the coating head is driven by a servo motor and can move along the Z direction at will, slurry is pumped to the coating head by a pump through a pipeline, and the thickness and the structure of a sprayed film are controlled easily by controlling the gap between the lip of the coating head and the film and the flow of the pumping. When the base film and the backing film are attached, the front surface of the base film is sprayed by the upper coating head 2, and the coating material is accelerated to permeate into micropores of the base film by negative pressure of the vacuum adsorption roller 3. The front coating of the base film is finished, the fluctuation interference in the coating transmission process is effectively avoided by the vacuum adsorption roller 3, the accurate control of the coating thickness uniformity is realized, the slurry is more favorable for being infiltrated into the original film, the pore filling in the original film is more sufficient, the combination of the resin and the original film is tighter, and the prepared proton exchange film has smaller gas permeability and higher strength.
The composite film continues to move forward until the composite film moves to the other vacuum adsorption roller 3, the back lining film is driven to move downwards due to the action of the back lining wind-up roller 5, the base film continues to move horizontally under the action of the wind-up power roller 8, at the moment, the back lining film is peeled off from the back surface of the base film, and after the base film leaves the vacuum adsorption roller 3, the back surface of the base film is sprayed through the lower coating head 11. Thus, the back surface of the base film is coated.
When the base film and the backing film are attached to each other and the backing film is peeled off from the back surface of the base film, it is necessary to control data on the pressure of the vacuum suction roll 3, the tension of the backing unwinding roll 4, the winding backing film and the winding power roll 8, and the like, so that the base film and the backing film are prevented from being attached to each other or the backing film and the base film are prevented from being separated from each other. The backing film is only attached to the base film when being coated, so that the flatness of the base film is ensured, the backing film cannot enter the heating assembly 6 along with the base film, the influence of the carrier film on the proton exchange film is reduced, the forming process temperature of the proton exchange film can be regulated and controlled independently, the limitation of the temperature resistance level of the carrier film is avoided, the forming temperature of the proton exchange film can be under the optimal working condition, the performance of the proton exchange film is improved, and the purposes of improving the durability of the proton exchange film and prolonging the service life are achieved.
The coating process can also be applied by using the existing doctor blade, sprayed or replaced by the coating mode combined in the above manner, which belongs to the conventional application of the prior art, and is not repeated here.
The coated base film is fed to the heating assembly 6 by means of a chain nip 7. The solvent is comprehensively removed in the heating component 6 through hot air heating and bottom plate heating of the bottom plate to obtain the proton exchange membrane, and the proton exchange membrane is pulled by the chain clamp 7 to pass through the winding power roller 8 after being discharged out of the drying tunnel. The structure of the heating element 6 can refer to the heating and drying element described in the patent CN202211366272.4 of the prior application, and will not be described herein.
And then the proton exchange membrane is wound by a smearing winding roller, and the backing membrane unwinding roller 9 unwinds the protective membrane to the winding roller while the proton exchange membrane is wound, so that the protective membrane and the proton exchange membrane are wound in a compounding way, and a final product is obtained. The novel chain clamp conveying mode is adopted, and deformation such as stretching and wrinkling of the original film is avoided. In addition to the above-described conveying means of chain clips, other conveying means such as gear chambers, tube chains, etc. have also been used for the transport of the base film.
The upper coating head 2 is located above the vacuum suction roll 3 on the left side. The lower coating head 11 is located on one side of the vacuum suction roll 3 on the right side and below the base film. The backing unreeling roller 4 and the backing winding roller 5 are positioned below the vacuum adsorption rollers 3, and the vacuum adsorption rollers 3 are arranged at intervals. And a heating component 6 is arranged behind the coating component, and the coated base film is dried by the heating component 6 to obtain the proton exchange film. The winding power roller 8 positioned behind the heating component 6 sends the proton exchange film into the film coating winding roller 10, one side of the winding roller is provided with a backing film unwinding roller 9, and the backing film unwinding roller 9 sends the protective film into the film coating winding roller 10 and is compounded with the proton exchange film.
The unreeling roller 1, the backing unreeling roller 4, the backing searching roller, the vacuum absorbing roller 3, the reeling power roller 8, the backing film unreeling roller 9 and the coating reeling roller are all existing equipment, and the intermediate roller is used as a transition between the rollers through guide rollers (not marked in the drawing), so that the specific structure and principle of the intermediate roller are the prior art, and are not repeated herein.
Compared with the prior art, the preparation device and the preparation method of the proton exchange membrane simplify the process, avoid the influence of the backing membrane on the proton exchange membrane, ensure that the quality of the proton exchange membrane is controllable, facilitate the realization of large-scale production and have high efficiency.
The application and its embodiments have been described above by way of illustration and not limitation, and the application is illustrated in the accompanying drawings and described in the drawings in which the actual structure is not limited thereto. Therefore, if one of ordinary skill in the art is informed by this disclosure, the structural mode and the embodiments similar to the technical scheme are not creatively designed without departing from the gist of the present application.

Claims (9)

1. The utility model provides a proton exchange membrane's preparation facilities, its characterized in that includes the unreeling roller of unreeling base film, unreels backing film's backing unreels roller, the backing wind-up roller of rolling backing film and coating subassembly, base film and backing film remove to the vacuum adsorption roller on, paste base film and backing film closely through the vacuum adsorption, follow the backing film and peel off from the base film by the backing wind-up roller when base film and backing film pass through another vacuum adsorption roller after pasting, the coating subassembly includes and carries out the upper coating head of coating to the base film front when base film and backing film paste closely and carries out the lower coating head of coating to the base film back after backing film peels off from the base film.
2. The apparatus for preparing a proton exchange membrane according to claim 1, wherein the upper coating head is located above a vacuum adsorption roller on the left side, the vacuum adsorption roller clings the base membrane and the backing membrane and allows the coating to permeate into the base membrane under vacuum.
3. The apparatus for preparing a proton exchange membrane according to claim 2, wherein the lower coating head is located at one side of the vacuum adsorption roll on the right side and below the base membrane.
4. The apparatus for preparing a proton exchange membrane according to claim 3, wherein the backing unreeling roller and the backing reeling roller are positioned below the vacuum adsorption rollers, and the vacuum adsorption rollers are arranged at intervals.
5. The apparatus for preparing a proton exchange membrane according to any one of claims 1 to 4, wherein a heating assembly is further provided behind the coating assembly, and the coated base membrane is dried by the heating assembly to obtain the proton exchange membrane.
6. The apparatus according to claim 5, wherein a winding power roller behind the heating assembly feeds the proton exchange membrane into a film winding roller, a backing film unwinding roller is arranged on one side of the winding roller, and the backing film unwinding roller feeds the protective membrane into the film winding roller and is compounded with the proton exchange membrane.
7. A process for preparing a proton exchange membrane, characterized by using the apparatus for preparing as claimed in claim 1, comprising the steps of:
a. respectively unreeling the base film and the backing film to a vacuum adsorption roller, flatly attaching the backing film to the lower part of the base film on the vacuum adsorption roller so as to form a composite film, spraying the front surface of the base film when the base film is attached to the backing film, and accelerating the paint to permeate into micropores of the base film through negative pressure of the vacuum adsorption roller;
b. the composite film is moved to another vacuum adsorption roller, the backing film is independently rolled after being stripped from the back surface of the base film, and then the back surface of the base film is sprayed;
c. and drying the coated base film to remove the solvent to obtain a proton exchange film, and finally, compounding and rolling the proton exchange film and the protective film.
8. The method according to claim 7, wherein the coated base film in step c is drawn by a chain clip through hot air heating and bottom plate heating in a heating assembly to remove the solvent.
9. The method for preparing a proton exchange membrane according to claim 8, wherein in the step c, the proton exchange membrane is fed into the wind-up roll through the wind-up power roll, the protective film is fed into the wind-up roll through the protective film unreeling roll, and the proton exchange membrane and the protective film are compounded after being fed into the wind-up roll.
CN202311403140.9A 2023-10-27 2023-10-27 Proton exchange membrane preparation device and preparation method Active CN117133956B (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102544558A (en) * 2012-01-17 2012-07-04 武汉理工新能源有限公司 Method for continuously manufacturing 3-CCM (three Catalyst Coated Membranes) of fuel cell
CN110265673A (en) * 2019-07-12 2019-09-20 深圳市信宇人科技股份有限公司 The absorption coating apparatus of hydrogen fuel cell CCM membrane electrode
CN110328085A (en) * 2019-08-09 2019-10-15 深圳市浩能科技有限公司 A kind of coating machine for ultrathin membrane coating
CN111790572A (en) * 2020-07-01 2020-10-20 东风汽车集团有限公司 Proton membrane fixing device for double-side coating
CN112803050A (en) * 2021-01-29 2021-05-14 山东魔方新能源科技有限公司 Membrane electrode preparation device and preparation method thereof
CN115889076A (en) * 2022-10-28 2023-04-04 浙江天能氢能源科技有限公司 Device and method for continuously manufacturing membrane electrode CCM of fuel cell

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102544558A (en) * 2012-01-17 2012-07-04 武汉理工新能源有限公司 Method for continuously manufacturing 3-CCM (three Catalyst Coated Membranes) of fuel cell
CN110265673A (en) * 2019-07-12 2019-09-20 深圳市信宇人科技股份有限公司 The absorption coating apparatus of hydrogen fuel cell CCM membrane electrode
CN110328085A (en) * 2019-08-09 2019-10-15 深圳市浩能科技有限公司 A kind of coating machine for ultrathin membrane coating
CN111790572A (en) * 2020-07-01 2020-10-20 东风汽车集团有限公司 Proton membrane fixing device for double-side coating
CN112803050A (en) * 2021-01-29 2021-05-14 山东魔方新能源科技有限公司 Membrane electrode preparation device and preparation method thereof
CN115889076A (en) * 2022-10-28 2023-04-04 浙江天能氢能源科技有限公司 Device and method for continuously manufacturing membrane electrode CCM of fuel cell

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