CN112803050A - Membrane electrode preparation device and preparation method thereof - Google Patents
Membrane electrode preparation device and preparation method thereof Download PDFInfo
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- CN112803050A CN112803050A CN202110125519.2A CN202110125519A CN112803050A CN 112803050 A CN112803050 A CN 112803050A CN 202110125519 A CN202110125519 A CN 202110125519A CN 112803050 A CN112803050 A CN 112803050A
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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]
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
- B05C9/08—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation
- B05C9/14—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation the auxiliary operation involving heating or cooling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H23/00—Registering, tensioning, smoothing or guiding webs
- B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
- B65H23/26—Registering, tensioning, smoothing or guiding webs longitudinally by transverse stationary or adjustable bars or rollers
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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
- 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
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- 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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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The invention belongs to the technical field of fuel cells, and particularly relates to a preparation device of a membrane electrode, which comprises the following components: the first unwinding assembly is used for unwinding a proton exchange membrane, a first catalyst layer is attached to the surface A of the proton exchange membrane, and a back membrane is attached to the surface B of the proton exchange membrane; the second unwinding assembly is used for unwinding the porous membrane; a peeling assembly for peeling the back film; the attaching assembly is used for attaching the surface of the proton exchange membrane, which is attached with the first catalyst layer, to the porous membrane; the adsorption heating assembly is used for attaching the proton exchange membrane to the surface of the adsorption heating assembly through the adsorption porous membrane and heating the proton exchange membrane; the coating assembly is used for coating the second catalyst slurry on the surface B of the proton exchange membrane to form a second catalyst layer; and the drying component is used for drying the second catalytic layer to obtain the membrane electrode. The membrane electrode preparation device provided by the invention can inhibit the swelling of the proton exchange membrane when the second catalyst slurry is coated, improves the preparation excellent rate of the membrane electrode, has high production efficiency, and is beneficial to mass production.
Description
Technical Field
The invention belongs to the technical field of fuel cells, and particularly relates to a membrane electrode preparation device and a preparation method thereof.
Background
Proton Exchange Membrane Fuel Cells (PEMFCs) are an important branch of fuel cells, and gradually become the mainstream in fuel cell research due to their characteristics of quick start, capability of operating at room temperature, no electrolyte outflow, small weight, high specific power, no environmental pollution, and wide application.
The Membrane Electrode Assembly (MEA) provides continuous channels of protons, electrons, reaction gas and water for the electrochemical reaction of the proton exchange membrane fuel cell, is a key part of the proton exchange membrane fuel cell for realizing the conversion of chemical energy and electric energy, and directly influences the performance exertion of the proton exchange membrane on the performance of the proton exchange membrane. The membrane electrode comprises a proton exchange membrane and catalyst layers attached to two sides of the proton exchange membrane.
At present, most of membrane electrode preparation processes are hot-pressing transfer printing, ultrasonic spraying and the like, but the ultrasonic spraying efficiency is low and the excellent rate is low. The hot-pressing transfer printing process is complicated, the efficiency is low, and the excellent rate is low.
The Catalyst Coated Membrane (CCM) is a technology for directly acting a Catalyst on two sides of a proton exchange Membrane without hot pressing to prepare a Membrane electrode, is also called as a double-sided direct coating technology, has high production efficiency and high excellent rate, can improve the utilization rate and proton conductivity of the Catalyst, further reduces the loading amount of Catalyst Pt, is suitable for mass production, but has extremely high difficulty. This is because CCM direct coating can only be applied directly to the first side of the proton exchange membrane, and if the catalyst is applied directly to the second side of the proton exchange membrane, it can cause uncontrolled swelling of the proton exchange membrane of large dimensions.
In the prior art, in order to avoid the poor product caused by the swelling of the proton exchange membrane when the catalyst layer is directly coated on the second surface, hot-pressing transfer printing and ultrasonic spraying methods are mostly adopted. However, the hot-pressing transfer method has the disadvantages of complicated process for preparing the membrane electrode, low product goodness, low utilization rate of the ultrasonic spraying catalyst, low goodness, slow production rhythm and the like, and is not suitable for large-scale commercial mass production. Recently, there are some new methods, such as a proton membrane coated with a catalyst coating on a first side by means of an anti-swelling membrane, which inhibits swelling when coating a catalyst layer on a second side by means of a glue layer adsorption method, but after coating the catalyst layer on the second side, part of the catalyst layer on the first side may be stuck when removing the anti-swelling membrane; in addition, the antiswelling membrane also has selective adhesion to the first side catalyst layer, i.e., certain first side catalyst layer formulations do not allow the antiswelling membrane to adhere tightly.
In view of the above, it is necessary to provide a technical solution to solve the above technical problems.
Disclosure of Invention
One of the objects of the present invention is: aiming at the defects of the prior art, the membrane electrode preparation device is provided, and the proton membrane can not generate large-size uncontrollable swelling when the second face catalysis layer is coated.
In order to achieve the purpose, the invention adopts the following technical scheme:
a membrane electrode preparation apparatus comprising:
the first unwinding assembly is used for unwinding a proton exchange membrane, a first catalyst layer is attached to the surface A of the proton exchange membrane, and a back membrane is attached to the surface B of the proton exchange membrane;
the second unwinding assembly is used for unwinding the porous membrane;
the peeling assembly is arranged at the downstream of the first unreeling assembly and used for peeling the back film;
the laminating assembly is arranged at the downstream of the second unreeling assembly and the stripping assembly and is used for laminating one surface, attached with the first catalyst layer, of the proton exchange membrane with the porous membrane;
an adsorption heating assembly arranged at the downstream of the attaching assembly, wherein the proton exchange membrane is attached to the surface of the adsorption heating assembly through adsorbing the porous membrane and is heated;
the coating assembly is arranged corresponding to the adsorption heating assembly and is used for coating a second catalyst slurry on the surface B of the proton exchange membrane to form a second catalyst layer;
and the drying component is arranged corresponding to the adsorption heating component and is used for drying the second catalytic layer to obtain the membrane electrode.
As an improvement of the membrane electrode preparation apparatus of the present invention, the first unwinding assembly and the second unwinding assembly are arranged in parallel, the bonding assembly includes a first bonding roller and a second bonding roller which are arranged correspondingly, the coating assembly includes an extrusion coating assembly or a transfer coating assembly, and the drying assembly is arranged in an arc shape.
The membrane electrode preparation device is improved by further comprising a vacuumizing assembly, the adsorption heating assembly is connected with the vacuumizing assembly and comprises an adsorption heating roller, a plurality of vacuum adsorption holes are formed in the surface of the adsorption heating roller, the aperture of each vacuum adsorption hole is 0.01-2 mm, and the distance between every two adjacent vacuum adsorption holes is 1-20 mm. Wherein, the heating device of the adsorption heating assembly is arranged in the adsorption heating roller. The temperature of the surface of the adsorption heating roller is set to be 0-120 ℃.
As an improvement of the membrane electrode preparation device, the membrane electrode preparation device further comprises tension rollers, wherein the tension rollers comprise a first tension roller, a second tension roller and a third tension roller, the first tension roller is arranged between the first unreeling assembly and the first attaching roller, the second tension roller is arranged between the second unreeling assembly and the second attaching roller, and the third tension roller is arranged between the attaching assembly and the adsorption heating assembly. The tension control range of each tension roller is 0-100N, and the tension control precision is 0.1N.
The membrane electrode preparation device is characterized by further comprising an air draft assembly, wherein the air draft assembly is arranged corresponding to the adsorption heating assembly and is used for exhausting the solvent volatilized from the second catalyst layer.
The improved membrane electrode preparation device of the invention further comprises a drying component, wherein the drying component is arranged at the downstream of the adsorption heating component and is used for assisting in drying the second catalyst layer.
As an improvement of the membrane electrode preparation apparatus of the present invention, a flattening assembly is further included, the flattening assembly being disposed downstream of the drying assembly, the flattening assembly being configured to flatten the membrane electrode.
The membrane electrode preparation device is characterized by further comprising a support membrane unreeling composite assembly, wherein the support membrane unreeling composite assembly is arranged at the downstream of the flattening assembly and is used for unreeling a support membrane and compounding the support membrane on one surface of the membrane electrode.
The membrane electrode preparation device is an improvement of the membrane electrode preparation device, and further comprises a protective film unreeling assembly, a composite assembly and a reeling assembly, wherein the protective film unreeling assembly is used for unreeling a protective film, the composite assembly is used for compositing the protective film on the other surface of the membrane electrode, and the composite assembly is arranged between the support film unreeling composite assembly and the reeling assembly.
Another object of the present invention is to provide a method for preparing a membrane electrode, comprising the following operations:
coating a first catalyst layer on the surface A of the proton exchange membrane;
stripping a back membrane carried by the B surface of the proton exchange membrane;
attaching a porous membrane to one side of the proton exchange membrane coated with the first catalyst layer, wherein the porous membrane is a non-adhesive porous membrane;
vacuum adsorbing the porous membrane;
and coating a second catalyst layer on the surface B of the proton exchange membrane to obtain the membrane electrode.
As an improvement of the preparation method of the membrane electrode, the material of the porous membrane comprises at least one composite membrane of polytetrafluoroethylene membrane, porous carbon fiber paper, carbon fiber cloth, non-woven fabric, porous polyethylene membrane and porous polypropylene membrane.
Compared with the prior art, the invention has at least the following beneficial effects: the invention provides a membrane electrode preparation device, which realizes a membrane electrode preparation method, and comprises the steps of firstly respectively unreeling a proton exchange membrane and a porous membrane which are attached with a first catalyst layer, stripping a back membrane of the proton exchange membrane, attaching one surface of the proton exchange membrane which is attached with the first catalyst layer to the porous membrane by using an attaching component, then adsorbing the porous membrane by using an adsorption heating component so as to attach the proton exchange membrane to the surface of the adsorption heating component and heat the surface, then coating a second catalyst slurry on the other surface of the proton exchange membrane by using a coating component to obtain a second catalyst layer, wherein the proton exchange membrane is tightly attached to the surface of the adsorption heating component, so that the swelling of the proton exchange membrane can be inhibited when the second catalyst slurry is coated under the adsorption action and the heating action, and the heating function of the adsorption heating component can enable the solvent in the second catalyst layer to be quickly volatilized, and then the drying component is used for assisting the adsorption heating component to rapidly dry the solvent in the second catalyst layer to obtain the membrane electrode. The device of the invention improves the preparation excellent rate of the membrane electrode, has high production efficiency and is beneficial to the mass production of the membrane electrode.
Drawings
FIG. 1 is a schematic view of the structure of a membrane electrode production apparatus in example 1 of the present invention.
Wherein: 11-a first unreeling assembly, 12-a second unreeling assembly, 13-a peeling assembly, 2-a laminating assembly, 21-a first laminating roller, 22-a second laminating roller, 3-an adsorption heating roller, 31-a vacuumizing assembly, 4-a coating assembly, 5-a drying assembly, 51-a first tension roller, 52-a second tension roller, 53-a third tension roller, 61-an air draft assembly, 62-a drying assembly, 63-a flattening assembly, 71-a support film unreeling composite assembly, 72-a protection film unreeling assembly, 8-a composite assembly and 9-a reeling assembly.
Detailed Description
As used in the specification and in the claims, certain terms are used to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, within which a person skilled in the art can solve the technical problem to substantially achieve the technical result.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", horizontal ", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The present invention will be described in further detail below with reference to the accompanying drawings, but the present invention is not limited thereto.
Example 1
As shown in fig. 1, the present embodiment provides a membrane electrode preparation apparatus, including:
the first unwinding assembly 11 is used for unwinding a proton exchange membrane, a first catalyst layer is attached to the surface A of the proton exchange membrane, and a back membrane is attached to the surface B of the proton exchange membrane;
the second unwinding assembly 12 is used for unwinding the porous membrane;
the peeling assembly 13 is arranged at the downstream of the first unreeling assembly 11 and is used for peeling off the back film;
the attaching assembly 2 is arranged at the downstream of the second unreeling assembly 12 and the peeling assembly 13 and is used for attaching one surface, which is attached with the first catalyst layer, of the proton exchange membrane to the porous membrane;
the adsorption heating assembly is arranged at the downstream of the laminating assembly 2, and the proton exchange membrane is attached to the surface of the adsorption heating assembly through the adsorption porous membrane and is heated;
the coating assembly 4 is arranged corresponding to the adsorption heating assembly and is used for coating the surface B of the proton exchange membrane with second catalyst slurry to form a second catalyst layer;
and the drying component 5 is arranged corresponding to the adsorption heating component and is used for drying the second catalytic layer to obtain the membrane electrode.
Further, the first unwinding assembly 11 and the second unwinding assembly 12 are arranged in parallel, the attaching assembly 2 comprises a first attaching roller 21 and a second attaching roller 22 which are correspondingly arranged, the coating assembly 4 comprises an extrusion coating assembly 4 or a transfer coating assembly 4, and the drying assembly 5 is arranged in an arc shape.
Further, still include evacuation subassembly 31, the adsorption heating element is connected with evacuation subassembly 31, and the adsorption heating element includes adsorption heating roller 3, and a plurality of vacuum adsorption holes have been seted up on the surface of adsorption heating roller 3, and the aperture in vacuum adsorption hole is 0.01 ~ 2mm, and the interval in two adjacent vacuum adsorption holes is 1 ~ 20 mm. Wherein, the heating device of the adsorption heating component is arranged inside the adsorption heating roller 3. The temperature of the surface of the adsorption heating roller 3 is set to be 0-120 ℃. More preferably, the aperture of the vacuum adsorption hole is less than or equal to 1mm, and the maximum distance between two adjacent vacuum adsorption holes is less than or equal to 15 mm. The vacuum-pumping assembly 31 comprises a vacuum pump, and the vacuum-pumping pressure of the vacuum pump is preferably less than or equal to-80 Pa. The temperature of the surface of the adsorption heating roller 3 is set to be 70-80 ℃. The heating means may be provided as a heating plate.
Further, still include the tension roller, the tension roller includes first tension roller 51, second tension roller 52 and third tension roller 53, and first tension roller 51 sets up and unreels between subassembly 11 and the first laminating roller 21 at first, and second tension roller 52 sets up and unreels between subassembly 12 and the second laminating roller 22 at the second, and third tension roller 53 sets up between laminating subassembly 2 and the absorption heating element. The tension control range of each tension roller is 0-100N, and the tension control precision is 0.1N. Because the proton exchange membrane is thin and soft, a certain support is needed, the tension roller is used for supporting and adsorbing the moving belt of the proton exchange membrane, and preferably, the length of the adsorption area of the proton exchange membrane/the moving belt speed of the proton exchange membrane is more than or equal to 10 s. Preferably, when a proton exchange membrane with a thickness of 15 μm and a width of 20mm is used, the tension is controlled to be less than or equal to 10N.
Further, still include convulsions subassembly 61, convulsions subassembly 61 corresponds the setting with the adsorption and heating subassembly, and convulsions subassembly 61 is used for taking out the solvent that the second catalyst layer volatilizees.
Further, a drying component 62 is further included, the drying component 62 is disposed downstream of the adsorption heating component, and the drying component 62 is used for assisting in drying the second catalyst layer. The drying component 62 comprises an oven, the blowing frequency and the wind power in the oven are matched with the viscosity of the second catalyst slurry, the drying speed of the second catalyst layer is preferably less than or equal to 10s, the second surface catalyst layer is cracked due to too long drying time, and the subsequent rolling operation is not facilitated due to too short drying time.
Further, a flattening assembly 63 is further included, the flattening assembly 63 is disposed downstream of the drying assembly 62, and the flattening assembly 63 is used for flattening the membrane electrode.
Further, the membrane electrode assembly further comprises a support membrane unreeling composite assembly 71, wherein the support membrane unreeling composite assembly 71 is arranged at the downstream of the flattening assembly 63, and the support membrane unreeling composite assembly 71 is used for unreeling the support membrane and compounding the support membrane on one surface of the membrane electrode.
Further, the membrane electrode assembly further comprises a protective membrane unreeling assembly 72, a composite assembly 8 and a reeling assembly 9, wherein the protective membrane unreeling assembly 72 is used for unreeling a protective membrane, the composite assembly 8 is used for compositing the protective membrane on the other surface of the membrane electrode, and the composite assembly 8 is arranged between the support membrane unreeling composite assembly 71 and the reeling assembly 9. The protection film is attached to the surface of the second catalyst layer, and the second catalyst layers which are not dried completely can be prevented from being adhered to each other during rolling.
The invention provides a membrane electrode preparation device, and provides a membrane electrode preparation method, which comprises the steps of respectively unreeling a proton exchange membrane and a porous membrane which are attached with a first catalyst layer, stripping a back membrane of the proton exchange membrane, attaching one surface of the proton exchange membrane which is attached with the first catalyst layer to the porous membrane by using an attaching component 2, then adsorbing the porous membrane by using an adsorption heating component so as to attach the proton exchange membrane to the surface of the adsorption heating component and heat the surface, coating a second catalyst slurry on the other surface of the proton exchange membrane by using a coating component 4 to obtain a second catalyst layer, wherein the proton exchange membrane is tightly attached to the surface of the adsorption heating component, so that the swelling of the proton exchange membrane can be inhibited when the second catalyst slurry is coated under the adsorption action and the heating action, and the heating function of the adsorption heating component can enable the solvent in the second catalyst layer to be quickly volatilized, and then the drying component 5 is used for assisting the adsorption heating component to rapidly dry the solvent in the second catalyst layer to obtain the membrane electrode. The device of the invention improves the preparation excellent rate of the membrane electrode, has high production efficiency and is beneficial to the mass production of the membrane electrode.
Example 2
This example provides a membrane electrode preparation method, using the apparatus of example 1, comprising the following operations:
s1, coating a first catalyst layer on the surface A of the proton exchange membrane, unreeling the proton exchange membrane coated with the first catalyst layer by using a first unreeling assembly 11, and unreeling the porous membrane by using a second unreeling assembly 12;
s2, stripping the back membrane of the B surface of the proton exchange membrane by a stripping component 13;
s3, synchronously conveying the proton exchange membrane and the porous membrane, and compounding the surface of the proton exchange membrane coated with the first catalyst layer with the porous membrane when passing through the first attaching roller 21 and the second attaching roller 22;
s4, synchronously conveying the proton exchange membrane and the porous membrane to the adsorption heating roller 3 of the adsorption heating assembly, vacuumizing the adsorption heating roller 3 by using the vacuumizing assembly 31, heating the roller surface of the adsorption heating roller 3 by using a heating device in the adsorption heating assembly, and attaching the proton exchange membrane to the adsorption heating roller 3 through the adsorption porous membrane;
s5, coating the second catalyst slurry on the surface B of the proton exchange membrane by using the coating assembly 4, enabling the solvent in the second catalyst slurry to be volatilized quickly by the heating function of the adsorption heating assembly, and simultaneously, drying the second catalyst slurry by using the drying assembly 5 to assist in drying the second catalyst slurry to form a second catalyst layer; the solvent volatilized from the second catalyst layer is extracted by the air extraction assembly 61;
s6, synchronously moving the proton exchange membrane and the porous membrane with the catalyst layers coated on the two sides, and drying the second catalyst layer through the drying component 62;
s7, flattening the proton exchange membrane coated with the catalyst layers on the two sides by using a flattening component 63;
s8, the support membrane unreeling and compositing component 71 unreels the support membrane to composite the support membrane on one surface of the proton exchange membrane with the catalyst layers coated on the two surfaces;
s9, unwinding the protective film, compounding the protective film on the other surface of the proton exchange membrane with the catalyst layer coated on both surfaces, and winding by using the winding assembly 9 to obtain a CCM catalyst coating film;
s7, compounding two frames on two sides of the CCM catalyst coating membrane to obtain a five-in-one membrane electrode;
and S8, compounding two gas diffusion layers on two sides of the five-in-one membrane electrode to obtain the seven-in-one membrane electrode.
Further, the porous membrane may be made of at least one of a polytetrafluoroethylene membrane, a porous carbon fiber paper, a carbon fiber cloth, a nonwoven fabric, a porous polyethylene membrane, and a porous polypropylene membrane.
Variations and modifications to the above-described embodiments may also occur to those skilled in the art, which fall within the scope of the invention as disclosed and taught herein. Therefore, the present invention is not limited to the above-mentioned embodiments, and any obvious improvement, replacement or modification made by those skilled in the art based on the present invention is within the protection scope of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims (10)
1. A membrane electrode preparation apparatus, comprising:
the first unwinding assembly is used for unwinding a proton exchange membrane, a first catalyst layer is attached to the surface A of the proton exchange membrane, and a back membrane is attached to the surface B of the proton exchange membrane;
the second unwinding assembly is used for unwinding the porous membrane;
the peeling assembly is arranged at the downstream of the first unreeling assembly and used for peeling the back film;
the laminating assembly is arranged at the downstream of the second unreeling assembly and the stripping assembly and is used for laminating one surface, attached with the first catalyst layer, of the proton exchange membrane with the porous membrane;
an adsorption heating assembly arranged at the downstream of the attaching assembly, wherein the proton exchange membrane is attached to the surface of the adsorption heating assembly through adsorbing the porous membrane and is heated;
the coating assembly is arranged corresponding to the adsorption heating assembly and is used for coating a second catalyst slurry on the surface B of the proton exchange membrane to form a second catalyst layer;
and the drying component is arranged corresponding to the adsorption heating component and is used for drying the second catalytic layer to obtain the membrane electrode.
2. The membrane electrode preparation device according to claim 1, wherein the first unwinding assembly and the second unwinding assembly are arranged side by side, the bonding assembly comprises a first bonding roller and a second bonding roller which are correspondingly arranged, the coating assembly comprises an extrusion coating assembly or a transfer coating assembly, and the drying assembly is arranged in an arc shape.
3. The membrane electrode preparation device according to claim 1, further comprising a vacuum pumping assembly, wherein the adsorption heating assembly is connected with the vacuum pumping assembly, the adsorption heating assembly comprises an adsorption heating roller, a plurality of vacuum adsorption holes are formed in the surface of the adsorption heating roller, the aperture of each vacuum adsorption hole is 0.01-2 mm, and the distance between every two adjacent vacuum adsorption holes is 1-20 mm.
4. The membrane electrode preparation device according to claim 2, further comprising tension rollers, wherein the tension rollers include a first tension roller, a second tension roller, and a third tension roller, the first tension roller is disposed between the first unwinding assembly and the first bonding roller, the second tension roller is disposed between the second unwinding assembly and the second bonding roller, and the third tension roller is disposed between the bonding assembly and the adsorption heating assembly.
5. The membrane electrode preparation device according to claim 1, further comprising an air draft assembly, wherein the air draft assembly is arranged corresponding to the adsorption heating assembly, and is used for exhausting the solvent volatilized from the second catalyst layer.
6. A membrane electrode assembly according to claim 1, further comprising a drying assembly disposed downstream of the adsorption heating assembly, the drying assembly being configured to assist in drying the second catalyst layer.
7. A membrane electrode preparation apparatus according to claim 6, further comprising a flattening assembly provided downstream of the drying assembly, the flattening assembly being for flattening the membrane electrode.
8. The membrane electrode preparation device according to claim 7, further comprising a support membrane unwinding composite assembly disposed downstream of the flattening assembly, the support membrane unwinding composite assembly being configured to unwind the support membrane and composite the support membrane on one surface of the membrane electrode.
9. The membrane electrode preparation device according to claim 8, further comprising a protective film unwinding assembly, a lamination assembly and a winding assembly, wherein the protective film unwinding assembly is used for unwinding a protective film, the lamination assembly is used for laminating the protective film on the other surface of the membrane electrode, and the lamination assembly is arranged between the support film unwinding lamination assembly and the winding assembly.
10. A membrane electrode preparation method is characterized by comprising the following operations:
coating a first catalyst layer on the surface A of the proton exchange membrane;
stripping a back membrane carried by the B surface of the proton exchange membrane;
attaching a porous membrane to one side of the proton exchange membrane coated with the first catalyst layer, wherein the porous membrane is a non-adhesive porous membrane;
vacuum adsorbing the porous membrane;
and coating a second catalyst layer on the surface B of the proton exchange membrane to obtain the membrane electrode.
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Cited By (5)
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| CN113517447A (en) * | 2021-07-14 | 2021-10-19 | 辽宁分子流科技有限公司 | Preparation method of fuel cell membrane electrode |
| CN113793961A (en) * | 2021-08-06 | 2021-12-14 | 无锡先导智能装备股份有限公司 | Five-in-one forming equipment |
| CN113991128A (en) * | 2021-10-27 | 2022-01-28 | 中汽创智科技有限公司 | Method and equipment for mass production of membrane electrode assembly |
| CN114976045A (en) * | 2022-04-22 | 2022-08-30 | 中国科学院大连化学物理研究所 | Preparation method for adjusting pore diameter of catalyst layer of fuel cell |
| CN117133956A (en) * | 2023-10-27 | 2023-11-28 | 江苏源氢新能源科技股份有限公司 | Proton exchange membrane preparation device and preparation method |
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- 2021-01-29 CN CN202110125519.2A patent/CN112803050A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113517447A (en) * | 2021-07-14 | 2021-10-19 | 辽宁分子流科技有限公司 | Preparation method of fuel cell membrane electrode |
| CN113793961A (en) * | 2021-08-06 | 2021-12-14 | 无锡先导智能装备股份有限公司 | Five-in-one forming equipment |
| CN113793961B (en) * | 2021-08-06 | 2023-03-10 | 江苏氢导智能装备有限公司 | Five-in-one forming equipment |
| CN113991128A (en) * | 2021-10-27 | 2022-01-28 | 中汽创智科技有限公司 | Method and equipment for mass production of membrane electrode assembly |
| CN114976045A (en) * | 2022-04-22 | 2022-08-30 | 中国科学院大连化学物理研究所 | Preparation method for adjusting pore diameter of catalyst layer of fuel cell |
| CN114976045B (en) * | 2022-04-22 | 2023-11-10 | 中国科学院大连化学物理研究所 | Preparation method for adjusting aperture of catalytic layer of fuel cell |
| CN117133956A (en) * | 2023-10-27 | 2023-11-28 | 江苏源氢新能源科技股份有限公司 | Proton exchange membrane preparation device and preparation method |
| CN117133956B (en) * | 2023-10-27 | 2024-01-30 | 江苏源氢新能源科技股份有限公司 | Proton exchange membrane preparation device and preparation method |
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