CN110100341B - Method for forming electrode of PEFC type fuel cell and fuel cell - Google Patents
Method for forming electrode of PEFC type fuel cell and fuel cell Download PDFInfo
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- CN110100341B CN110100341B CN201780078210.4A CN201780078210A CN110100341B CN 110100341 B CN110100341 B CN 110100341B CN 201780078210 A CN201780078210 A CN 201780078210A CN 110100341 B CN110100341 B CN 110100341B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/52—Electrically conductive inks
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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
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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
- H01M8/02—Details
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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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- 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
Abstract
The object of the present invention is to produce a membrane electrode assembly free from deformation by applying an electrode ink composed of an electrolyte solution, catalyst-supporting carbon, and water or water and alcohol to a thin electrolyte membrane that deforms even in the air. The solution is to provide reinforcing tapes at both ends of the electrode ink application surface of an electrolyte membrane with a back plate to form a first electrode, and to stick the reinforcing tapes at both ends of the electrolyte membrane even if the back plate of the electrolyte membrane is peeled off in order to form a counter electrode, so that a gas-permeable substrate is present between the reinforcing tapes and a heating and adsorbing roller to perform strong suction, and therefore, the electrolyte membrane is not deformed even if the electrode ink is applied in order to form a second electrode. Further, the adhesive can be applied to both end sides of the air-permeable substrate instead of the reinforcing tape, and the uncoated portions on both end sides of the electrolyte membrane can be bonded, so that a higher effect can be obtained.
Description
Technical Field
The present invention relates to a method for forming an electrode of a PEFC (Polymer Electrolyte membrane Fuel Cell) type Fuel Cell and a Fuel Cell manufactured by the method.
More specifically, the present invention relates to a CCM (Catalyst coated membrane) type electrolyte membrane and an electrode forming method. The coating in the present invention is not particularly limited, and includes a method of applying particles or fibers to a substrate, such as roll coating, die coating, screen printing, curtain coating, compounding, ink jet, atomization (including fiberization) including spray coating, and electrostatic atomization (including fiberization), and further includes application of a micro-curtain.
The micro-curtain is a method of coating a liquid or the like by spraying it with a large-angle air nozzle or the like at a relatively low pressure of about 0.3MPa by traversing the object to be coated and the nozzle using a liquid film portion before forming mist, and does not generate overspray particles on the coated surface. Becomes cloudy if it travels a distance across the substrate.
The atomization (fiberization) is a method of producing particles or fibers by rotation such as ultrasonic waves or electrostatic spinning, centrifugal force of a rotating body, a melt-blowing method, or the like, in addition to the atomization by spray coating, and is a method of adhering or applying a liquid, a melt, or the like to an object by a force of compressed gas (air assist) as necessary.
Background
Conventionally, an electrolyte membrane is mixed with fine powder composed of an electrolyte solution, which is one kind of ionomer, and platinum or the like supported on carbon particles, carbon fibers, and the like, and the mixture is applied as an electrode catalyst ink to a GDL (Gas diffusion layer) and pressed against the electrolyte membrane, and/or applied to a release film, such as PTFE or the like, and transferred to the electrolyte membrane. The pressure-bonding method and the transfer method do not contain liquid, and therefore, resistance is generated between the electrolyte membrane and the electrode, and the performance of the fuel cell is reduced. In order to solve this problem, a method of directly applying electrode catalyst ink of CCM system to an electrolyte membrane has been proposed.
The CCM method is preferable, but since the electrolyte membrane is sensitive to moisture or the like and deforms instantaneously when the electrode catalyst ink is applied, it is attempted to apply the electrolyte membrane to a nozzle, a slit nozzle, or the like in a state where the electrolyte membrane moves without deforming by being adsorbed to a heated adsorption belt, a heated adsorption roller, or the like as described above. However, even in the case of the suction roll which is polished to a roundness of several micrometers or less at room temperature by a polishing apparatus, since the structure is complicated, the roll undergoes large flexural deformation during heating, and the roundness is extremely poor. Therefore, if the method called slit or slot nozzle that contacts with the liquid film interposed therebetween is used, the distance between the nozzle tip and the electrolyte membrane changes, and a portion having an excessively large distance is generated. If such a phenomenon occurs, the amount of the electrode ink applied is extremely small, and therefore, the electrode ink having a large amount of solvent and a low viscosity is applied in a thin film, and thus a porous application surface is formed, and it is extremely difficult to obtain uniform application. In order to solve this problem, japanese patent application laid-open No. 2010-149257 by the present inventors proposes a method in which the surface of the suction roller is polished while being heated to an application temperature so that the roundness can be reduced to 5 μm or less. In japanese patent application laid-open No. 2015-15258, which is assumed to polish an adsorption roller at normal temperature, a method is proposed in which a roller adsorbing an electrolyte membrane is cooled, electrode ink is applied to the electrolyte membrane by a slit nozzle, and the electrode ink adsorbed on the electrolyte membrane of the cooling roller by rotating the roller is heated by hot air and/or infrared rays. However, in this method, since the amount of the catalyst applied after drying is, for example, 0.1 mg per square centimeter of the anode and 0.3 mg per cathode, and is a thin film, it is necessary to thicken the wet film without affecting the distance between the electrolyte membrane and the nozzle tip even if the roundness of the roll is set to 3 μm. Therefore, it is expected that the solid content of the electrolyte solution and the catalyst must be 15% or less, for example. Then, it is not hard to imagine that even if there is adsorption by a strong vacuum pump for suppressing wetting and deformation of the electrolyte membrane by the solvent (mixed solvent of water and alcohol), damage by the solvent occurs at the interface of the electrolyte membrane until between the dry zones.
Documents of the prior art
Patent document
Patent document 1: japanese Kokai publication No. 2004-351413
Patent document 2: japanese laid-open patent publication No. 2005-63780
Disclosure of Invention
Since the electrolyte membrane is generally manufactured by a casting method, there is a back plate supporting the substrate, and thus the coating for forming the one-side electrode does not deform the electrolyte membrane and can be applied by either spray coating or a slit nozzle. However, since the electrolyte membrane is a very sensitive substrate that is easily deformed by moisture in the air, as described above, and is elongated when it is thinned to 25 μm or less, further to 15 μm or less and stretched, it is very difficult to form the electrodes on the opposite surfaces, and it is very difficult to wind the electrolyte membrane having the electrodes formed on both end sides of the electrolyte membrane.
The present invention has been made to solve the above problems, and an object of the present invention is to provide a method for manufacturing a high-quality and durable Membrane Electrode Assembly (MEA) for a PEFC type fuel cell, and an MEA.
More specifically, a high-performance membrane electrode assembly is manufactured by directly applying an electrode ink to an electrolyte membrane of a Roll-to-Roll (Roll) to manufacture a high-performance fuel cell.
The present invention provides a method for manufacturing a membrane electrode assembly for a fuel cell, the method comprising manufacturing an electrolyte membrane electrode assembly using a composite sheet, wherein a longitudinal section of each of both ends of the composite sheet on which at least one electrode is formed is composed of a reinforcing tape, an electrolyte membrane, and a back sheet layer, and wherein an electrode is formed on one side of the electrolyte membrane by continuously or intermittently moving a long electrolyte membrane supported by the back sheet and applying an electrode ink to the long electrolyte membrane, the method comprising: a first step of attaching a reinforcing tape to both end sides of a surface of the electrolyte membrane opposite to a surface supported by the back plate; a second step of applying a first electrode ink to the surface of the electrolyte membrane to which the reinforcing tape is attached; and a third step of drying the first electrode ink to form a first electrode.
The present invention provides a method for manufacturing a membrane electrode assembly for a fuel cell, characterized in that an electrolyte membrane electrode assembly is manufactured using a composite sheet, the manufacturing method causing a long electrolyte membrane supported by a back plate to move continuously or intermittently and applying electrode ink thereon to form an electrode on one side of the electrolyte, comprising: a step of applying a first electrode ink to the opposite side of the surface of the electrolyte membrane supported by the back plate; a step of drying the first electrode ink to form a first electrode; preparing a gas-permeable substrate supporting a first electrode; bonding electrode non-coating portions on both end sides of a coated surface of the first electrode ink of the electrolyte membrane to the air-permeable base material via an adhesive or a bonding agent; and a step of forming the composite sheet, wherein the longitudinal section of the central portion of the composite sheet other than the both end sides is formed by bonding a gas permeable base material, an electrode ink, an electrolyte membrane, and a back sheet layer.
The present invention provides a method for manufacturing a membrane electrode assembly for a fuel cell, comprising: a step of adsorbing the air-permeable base material side of the composite sheet to a heating adsorption roller or a heating adsorption belt; peeling the back sheet; applying a second electrode ink to a surface of the electrolyte membrane opposite to the surface of the first electrode while heating and sucking the electrolyte membrane through the air-permeable substrate; and a step of drying the second electrode ink to form a second electrode.
The present invention provides a method for manufacturing a membrane electrode assembly for a fuel cell, wherein a mold-released substrate for supporting the second electrode is laminated on the second electrode or the gas-permeable substrate is subjected to mold release treatment in advance when the membrane electrode assembly is wound.
The present invention provides a method for manufacturing a membrane electrode assembly for a fuel cell, comprising: a step of overlapping a breathable base material on a surface to which the reinforcing tape is attached and on which the first electrode is formed, and performing suction with a suction roller or a suction tape; peeling the back sheet from the electrolyte surface; applying a second electrode ink while heating and adsorbing a surface of the electrolyte membrane opposite to the first electrode; and a step of drying the second electrode ink to form a second electrode.
The method for producing a membrane electrode assembly of the present invention is characterized in that the adhesive or bonding agent present on both end sides of the air-permeable substrate is applied to the air-permeable substrate in a porous state.
In the present invention, there is provided a method for manufacturing a membrane electrode assembly, characterized in that the bonding agent or the adhesive contains a micro-adhesive and has at least solvent resistance.
The present invention provides a fuel cell obtained by using a membrane electrode assembly obtained by forming an anode on one side of an electrolyte membrane for a fuel cell which is moved by Roll-to-Roll (Roll) and forming an electrode containing a cathode catalyst on the opposite side of the anode, the fuel cell being characterized in that the membrane electrode assembly is obtained by the steps of: a first step of applying a reinforcing membrane to both ends of an electrolyte membrane provided with a back plate; a second step of adsorbing the back sheet by a heated adsorption roller or a heated adsorption belt and coating a catalyst on the surface to which the reinforcing film is applied; a third step of drying or pressure-attaching the catalyst;
a fourth step of adsorbing the first electrode surface via an air-permeable sheet on a roller or belt provided with an adsorption mechanism and rotating; a fifth step of peeling off the back sheet on a surface of the electrolyte membrane opposite to a surface on which the electrode is formed; a sixth step of forming a second electrode by applying a catalyst while heating and sucking a surface of the electrolyte membrane opposite to the first electrode through the air-permeable substrate; a seventh step of drying or pressure-bonding the electrode; and a step of finally winding the electrolyte membrane on which the bipolar electrodes are formed.
The present invention provides a fuel cell obtained by using a membrane electrode assembly obtained by forming an anode on one side of an electrolyte membrane for a fuel cell which is moved Roll to Roll and forming an electrode including a cathode catalyst on one side, the fuel cell being characterized in that the membrane electrode assembly is obtained by the steps of: forming a first electrode by applying a catalyst to a portion of an electrolyte membrane provided with a back plate, excluding a portion on both end sides; a step of drying or pressure-adhering the catalyst; preparing a breathable base material to which bonding processing has been applied in advance on both end sides; a step of overlapping the bonding-processed positions on both end sides of the air-permeable substrate with uncoated portions on both end sides of the first electrode-forming surface of the electrolyte membrane and sucking the positions by an adsorption roller or an adsorption belt; peeling the back sheet; heating the adsorption roller or the adsorption belt, or moving the adsorption roller or the adsorption heating belt to adsorb the electrolyte membrane via the air-permeable base material; forming a second electrode by applying a catalyst to a surface of the electrolyte membrane opposite to a surface of the first electrode; drying or pressing the electrode; and a step of finally winding the electrolyte membrane on which the bipolar electrodes are formed.
In the present invention, the catalyst is platinum, and the carrier is carbon having mesopores.
According to the method for manufacturing a membrane electrode assembly for a fuel cell of the present invention, even a very thin electrolyte membrane that is sensitive and, for example, 15 μm or less can be directly coated with electrode ink on each surface of the electrolyte membrane. Further, it is preferable to heat and suck the electrode ink applied to the electrolyte membrane in order to reduce the load on the electrolyte membrane, so that 99% or more of the solvent amount can be volatilized immediately after the electrolyte membrane is wetted, for example, within 3 seconds, and therefore, the adhesion between the membrane and the electrode can be improved, and the interface resistance can be reduced to the maximum.
In the present invention, if a method of applying a further velocity to the sprayed particles by pulse spraying, which is a spraying method, or an impact pulse method, which is a trademark registration of Mtek-smart, is used, the adhesion of the catalyst to the electrolyte membrane is further improved.
In the present invention, the amount of the electrode can be adjusted to 0.001 to 0.3 mg per 1 layer per square centimeter by a spray coating method, particularly an impact pulse method, and thus, for example, thin film lamination of 2 to 30 layers of electrode ink can be performed. The coating amount per 1 layer can be reduced by a combination of the spray coating method using the impact pulse and the heated adsorption drum, and in order to further reduce the coating amount per 1 layer, the solid content of the electrode ink made of, for example, carbon supported on a platinum catalyst, an electrolyte solution, water, and alcohol may be 10% by weight or less, for example, 3% by weight or less.
The solid content concentration as described above is advantageous in that the thinner the membrane is, the less the load is applied to the electrolyte membrane as the membrane is laminated, and the more uniform the coating amount per unit area is, so that the performance of the fuel cell is improved.
In the present invention, the porous gas-permeable substrate, for example, a dust-free paper, is heated at, for example, 50 to 120 ℃ and can be sucked by, for example, a commercially available vacuum pump having a vacuum degree of 60KPa or more at low cost, so that a membrane electrode assembly having no defects without damaging the electrolyte membrane can be manufactured. In addition, in the method of applying the adhesive to both end sides of the air-permeable substrate, when the adhesive is present in a dot form using a gravure roll or the like to form a porous form, the adhesive can be adsorbed to the attached electrolyte membrane, and therefore, a micro adhesive which is easily peeled off in a subsequent step can be used as the adhesive.
The vacuum pump may be selected from commercially available low-cost KRF, KHA, KHH, and the like available from ORION corporation, for example, in CCM applications in the fuel cell industry from around 2002.
The present invention is to manufacture a membrane electrode assembly having stable quality by laminating thin films of an electrolyte membrane which is extremely thin and easily deformed and difficult to handle, by a method of directly spraying an electrode ink, etc., in a membrane electrode assembly which is not expected in the application of the liquid coating and drying method of jp 2004-351413.
As described above, according to the present invention, even if electrode ink is directly applied to a sensitive electrolyte, a desired interface of a membrane electrode can be obtained, and a high-quality membrane electrode assembly and a fuel cell can be manufactured.
Drawings
Fig. 1 is a schematic cross-sectional view of the structure of a back sheet, an electrolyte membrane, and a reinforcing tape in the width direction of an electrolyte membrane according to an embodiment of the present invention.
Fig. 2 is a schematic cross-sectional view of the electrolyte membrane and the electrode in the width direction according to the embodiment of the present invention.
FIG. 3 is a schematic cross-sectional view in the width direction of an electrolyte membrane and a gas permeable sheet according to an embodiment of the present invention.
Fig. 4 is a schematic cross-sectional view in the width direction of the back plate, the electrolyte membrane, and the first electrode of the embodiment of the invention.
Fig. 5 is a schematic cross-sectional view of an inverted electrolyte membrane for forming a second electrode according to the embodiment of the present invention.
Fig. 6 is a schematic sectional view of the second electrode according to the embodiment of the present invention.
Fig. 7 is a general sectional view of a membrane electrode assembly according to an embodiment of the present invention.
Fig. 8 is a schematic view of unwinding, first electrode ink coating, drying, and winding according to the embodiment of the present invention.
Fig. 9 is a schematic view of unwinding, second electrode ink coating, drying, and winding according to the embodiment of the present invention.
Detailed Description
Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. The following embodiments are merely examples for facilitating understanding of the present invention, and do not exclude addition, replacement, or modification that may be implemented by those skilled in the art without departing from the technical spirit of the present invention.
The drawings show diagrammatically preferred embodiments of the invention.
In fig. 1, a reinforcing tape 3 is attached to an electrolyte membrane 1 provided with a back sheet 2. The material of the reinforcing tape is not particularly limited as long as it is resistant to heating and a solvent atmosphere and does not leave a residue when peeled off.
Fig. 2 is a view of the structure of fig. 1 in which the first electrode 4 is formed by applying the first electrode ink to the electrolyte membrane at a portion other than the reinforcing tape attached to the electrolyte membrane. In the case where the coating is spray coating, there is no problem even if some electrode ink adheres to the reinforcing tape.
Fig. 3 is a view of the breathable substrate 2 laminated on the first electrode surface 4 with the breathable substrate 2 reversed from fig. 2. The electrolyte membrane can be bonded if an adhesive such as a micro adhesive is applied in advance to the surface of the reinforcing tape 3.
Fig. 4 is a diagram in which the first electrode is formed on the electrolyte membrane 1 supported by the back plate 2 without attaching the reinforcing tape.
Fig. 5 is a view in which the air-permeable substrate 6, to both sides of which the adhesive 7 has been applied in advance, is attached to a portion of the electrolyte membrane 1 where no electrode is formed. The back plate 2 remains on the top of the electrolyte membrane 1. The back sheet 2 may be sucked by a suction roller described later when the air-permeable base material is sucked.
Fig. 6 is a view in which the back sheet of fig. 5 is peeled off, and a second electrode is formed by applying a second electrode ink to an electrolyte membrane adsorbed on a heated adsorption roller described later via a gas-permeable sheet 6 and drying the second electrode ink.
Figure 7 is a diagram of a membrane electrode assembly made by the present invention. The air-permeable sheet 6 of fig. 6 is obtained by peeling from the electrolyte membrane 1. The electrolyte membrane 1 is provided with a first electrode 4 and a second electrode.
Fig. 8 shows that the electrolyte membrane supported by the back plate is fed from the unwinding roll magazine 10, fed to the adsorption heating roll 20 while being pressed against the guide roll 1, and the electrode ink is applied by spraying from the application head 21 in a suction-heated state, and after being sufficiently dried, the electrolyte membrane is separated from the adsorption roll and the guide roll, and is wound as the winding roll magazine 11. The coating method is not limited to spray coating. In addition, when a drying step is present in the subsequent steps, the drying is not sufficient here.
In addition, the adsorption heating roller may be an adsorption heating belt. The adsorption heating may be performed only by the adsorption drum or the adsorption belt, and the heating of the electrolyte membrane may be performed only by the steps after the coating.
Fig. 9 shows a system in which the system of fig. 8 is used with multiple functions, the air-permeable substrate 6 is fed together with the supply roll magazine 10, the back sheet 2 is peeled off while being sucked by pressure with the guide roll and the suction/heating roll 20, the electrolyte membrane is moved in a state of being heated and sucked, the second electrode ink is applied by the coating head, dried to form a second electrode, and then the second electrode ink is separated from the guide roll and wound. The air-permeable substrate 6 is peeled off and separately wound.
At this time, the other electrode supporting base material 8 can be wound by being laminated on the electrode from the guide roller and the heating/adsorbing roller and being moved. When the electrode is formed and then wound together with the air-permeable substrate 6, the electrode supporting substrate becomes unnecessary.
Industrial applicability
According to the present invention, a membrane electrode assembly for a PEFC fuel cell can be produced with high quality by the CCM method.
Description of the reference numerals
1 electrolyte membrane
2 backboard
3. 3' reinforcing tape
4 first electrode
5 second electrode
6 air permeable base material (sheet)
7. 7' adhesive layer
8 electrode supporting base material
10 uncoiling roller type material warehouse
11 winding roller type material warehouse
20 heating adsorption roller
21 coating head
23 guide roll 1
24 guide roller 2
Claims (5)
1. A method for manufacturing a fuel cell, characterized in that an electrode is formed on an electrolyte membrane by continuously or intermittently moving a long electrolyte membrane supported by a back plate and applying an electrode ink thereto, thereby manufacturing a fuel cell, the method comprising:
attaching a reinforcing tape to both end sides of a surface of the electrolyte membrane opposite to the surface supported by the back plate;
a step of applying a first electrode ink, the solid content of which is 10% by weight or less, to the surface of the electrolyte membrane to which the reinforcing tape is attached by a spray coating method;
a step of drying the first electrode ink to form a first electrode;
forming a composite sheet having an electrode formed on at least one side, a longitudinal section on both ends of the composite sheet being composed of a reinforcing tape, an electrolyte membrane, and a back sheet layer, and a step of superposing an air-permeable base material on a surface to which the reinforcing tape is attached and on which the first electrode is formed, and adsorbing and fixing the composite sheet by at least an adsorption roller or an adsorption tape which moves simultaneously, and peeling the back sheet from the composite sheet; and
and a step of applying a second electrode ink to the surface of the electrolyte membrane from which the back sheet has been peeled, drying the ink, and moving the ink to a subsequent step while reinforcing the ink with a reinforcing tape, thereby producing an electrolyte membrane electrode assembly.
2. The method of manufacturing a fuel cell according to claim 1,
the back sheet is peeled from the electrolyte surface;
the manufacturing method of the fuel cell further includes:
applying a second electrode ink while heating and adsorbing a surface of the electrolyte membrane opposite to the first electrode; and
and drying the second electrode ink to form a second electrode.
3. A method for manufacturing a fuel cell, characterized in that an electrode is formed on an electrolyte membrane by continuously or intermittently moving the long electrolyte membrane supported by a back plate and applying an electrode ink thereto, the method comprising:
a step of applying a first electrode ink to the opposite side of the surface of the electrolyte membrane supported by the back plate;
a step of drying the first electrode ink to form a first electrode;
preparing a gas-permeable substrate supporting a first electrode;
bonding electrode non-coating portions on both end sides of a coated surface of the first electrode ink of the electrolyte membrane to the air-permeable base material via an adhesive or a bonding agent;
a step of forming a composite sheet by adsorbing the air-permeable base material of a composite base material having an air-permeable base material, electrode ink, an electrolyte membrane, and a back sheet layer in a longitudinal section near a central portion other than the both end sides by at least an adsorption roller or an adsorption belt, and moving the composite sheet while adhering the composite sheet;
a step of adsorbing and fixing the composite sheet by the adsorption roller or the adsorption belt and peeling a back sheet from the composite sheet; and
a step of strongly attracting and fixing the electrolyte membrane via the air-permeable base material, applying a second electrode ink to the surface of the electrolyte membrane from which the back sheet is peeled, and drying the second electrode ink to produce an electrolyte membrane electrode assembly,
the adhesive or bonding agent present on both ends of the air-permeable substrate is applied in a porous state to the air-permeable substrate.
4. The method of manufacturing a fuel cell according to claim 1 or 3,
the adsorption roller or the adsorption belt is a heating adsorption roller or a heating adsorption belt.
5. The method of manufacturing a fuel cell according to claim 4,
when the membrane electrode assembly is wound, a mold-released substrate for supporting the second electrode is laminated on the second electrode, or the gas-permeable substrate is subjected to mold release treatment in advance.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016248157A JP6903910B2 (en) | 2016-12-21 | 2016-12-21 | Fuel cell manufacturing method, membrane / electrode assembly, fuel cell |
| JP2016-248157 | 2016-12-21 | ||
| PCT/JP2017/044287 WO2018116875A1 (en) | 2016-12-21 | 2017-12-11 | Method for forming electrode of pefc-type fuel cell, and fuel cell |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110100341A CN110100341A (en) | 2019-08-06 |
| CN110100341B true CN110100341B (en) | 2022-08-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201780078210.4A Active CN110100341B (en) | 2016-12-21 | 2017-12-11 | Method for forming electrode of PEFC type fuel cell and fuel cell |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6903910B2 (en) |
| CN (1) | CN110100341B (en) |
| WO (1) | WO2018116875A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP4336606A3 (en) * | 2018-08-01 | 2024-03-20 | Toray Industries, Inc. | Method of manufacturing and device for manufacturing membrane-catalyst assembly |
| JP7180863B2 (en) * | 2018-08-21 | 2022-11-30 | エムテックスマート株式会社 | Method for manufacturing all-solid-state battery |
| JP7395127B2 (en) | 2019-08-23 | 2023-12-11 | エムテックスマート株式会社 | Battery manufacturing method and battery |
| JP2022172677A (en) * | 2021-05-06 | 2022-11-17 | エムテックスマート株式会社 | Method for manufacturing laminate of membrane electrode assembly and gas-permeable substrate, laminate of membrane electrode assembly and gas-permeable substrate, and method for manufacturing fuel cell |
| JP2022178501A (en) * | 2021-05-20 | 2022-12-02 | エムテックスマート株式会社 | Method for manufacturing membrane/electrode assembly, method for manufacturing laminate of membrane/electrode assembly and air-permeable substrate, laminate of membrane/electrode assembly and air-permeable substrate, method for manufacturing fuel cell, and fuel cell |
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| JP2010129247A (en) * | 2008-11-26 | 2010-06-10 | Nissan Motor Co Ltd | Method for manufacturing electrode stack of fuel cell |
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| US20160064741A1 (en) * | 2014-09-02 | 2016-03-03 | GM Global Technology Operations LLC | Electrode design with optimal ionomer content for polymer electrolyte membrane fuel cell |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN110100341A (en) | 2019-08-06 |
| JP2018101580A (en) | 2018-06-28 |
| JP6903910B2 (en) | 2021-07-14 |
| WO2018116875A1 (en) | 2018-06-28 |
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