WO2006082995A1 - 燃料電池の製造方法及び燃料電池の製造装置 - Google Patents
燃料電池の製造方法及び燃料電池の製造装置 Download PDFInfo
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- WO2006082995A1 WO2006082995A1 PCT/JP2006/302108 JP2006302108W WO2006082995A1 WO 2006082995 A1 WO2006082995 A1 WO 2006082995A1 JP 2006302108 W JP2006302108 W JP 2006302108W WO 2006082995 A1 WO2006082995 A1 WO 2006082995A1
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- fuel cell
- catalyst layer
- layer
- spraying
- drying
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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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/04—Processes of manufacture in general
- H01M4/0402—Methods of deposition of the material
- H01M4/0419—Methods of deposition of the material involving spraying
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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
- H01M4/886—Powder spraying, e.g. wet or dry powder spraying, plasma spraying
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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
- H01M4/8878—Treatment steps after deposition of the catalytic active composition or after shaping of the electrode being free-standing body
- H01M4/8882—Heat treatment, e.g. drying, baking
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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
- H01M8/002—Shape, form of a fuel cell
- H01M8/004—Cylindrical, tubular or wound
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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
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0247—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the form
- H01M8/0252—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the form tubular
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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
- Y02E60/10—Energy storage using batteries
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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
Definitions
- the present invention relates to a fuel cell manufacturing method and a fuel cell manufacturing apparatus, and more particularly to a cylindrical fuel cell manufacturing method and a fuel cell manufacturing apparatus.
- oxidizing gas such as oxygen and air and reducing gas such as hydrogen and methane (fuel gas) or liquid fuel such as methanol
- fuel gas fuel gas
- liquid fuel such as methanol
- oxidizing gas such as oxygen and air
- reducing gas such as hydrogen and methane (fuel gas) or liquid fuel
- fuel gas fuel gas
- liquid fuel such as methanol
- fuel cells that generate electricity by converting chemical energy into electrical energy are attracting attention.
- a fuel electrode an anode catalyst layer
- an air electrode forced sword catalyst layer
- a diffusion layer is further provided on the outside of each sandwiched catalyst layer, and these are sandwiched by separators provided with raw material supply passages.
- a battery is configured, and raw materials such as hydrogen and oxygen are supplied to each catalyst layer to generate electricity.
- the raw material supplied to the fuel electrode is hydrogen gas and the raw material supplied to the air electrode is air
- hydrogen ions and electrons are generated from the hydrogen gas at the fuel electrode.
- the electrons reach the air electrode from the external terminal through the external circuit.
- water is generated by oxygen in the supplied air, hydrogen ions that have passed through the electrolyte membrane, and electrons that have reached the air electrode through an external circuit.
- This fuel cell has a variety of clean energy sources due to the abundance of gastric and liquid fuels used in power generation and the fact that the substance discharged from the power generation principle is water. Consideration has been made.
- tubular A fuel cell has a structure in which a fuel electrode is provided on one of the inner and outer surfaces of a tubular polymer electrolyte membrane, and an air electrode is provided on the other surface, making it easier to reduce the size than a flat fuel cell. It has the characteristic of being.
- the joined body (air electrode Z electrolyte membrane Z fuel electrode) used for a tubular fuel cell is usually an extrusion method that has catalyst layers (fuel electrode and air electrode) on the inner and outer surfaces of the tubular electrolyte membrane.
- Japanese Unexamined Patent Publication No. 2002-124273 Japanese Unexamined Patent Publication No. 2002-124273
- dipping method Japanese Unexamined Patent Publication No. 2002-289220
- chemical plating method Japanese Unexamined Patent Publication No. 2002-260685
- the extrusion method as described in JP 2002-1 24273 uses a suitable solvent for the catalyst for the fuel electrode, the solid polymer electrolyte polymer for the electrolyte membrane, and the catalyst for the air electrode, respectively.
- a fluid that can flow is obtained, and the layers including the fuel electrode catalyst, the solid polymer electrolyte polymer, and the air electrode catalyst are integrally extruded from the inner layer to obtain a joined body.
- An integral molded body is obtained by extruding each fluid from the extrusion nozzle, and after extrusion, the solvent is volatilized by heating to fix the multilayer state.
- the dipping method as described in JP-A-2002-289220 involves dipping a hollow porous support in a treatment tank containing a resin solution (paste) containing a catalyst for an air electrode, After drying to form a catalyst layer (air electrode), an electrolyte layer and a catalyst layer (fuel electrode) are similarly formed to obtain a joined body.
- the chemical plating method as described in Japanese Patent Application Laid-Open No. 2002-260685 is performed by bringing an aqueous solution of a catalyst for an air electrode into contact with the outer surface side of a tubular electrolyte membrane. Then, a catalyst layer (air electrode) is formed on the outer surface of the tube, and then the entire tube is washed. Next, a mixture in which the catalyst for the fuel electrode is suspended is injected into the inside of the tube, and the catalyst layer ( A joined body is obtained by forming a fuel electrode).
- JP-A-2003-100314 discloses a method for producing a fuel cell having a fuel electrode on one side of a flat polymer electrolyte membrane and an air electrode on the other side.
- a catalyst layer is formed by spraying a slurry of a resin solution in which a catalyst is dispersed on a surface of a molecular electrolyte membrane while being heated. It is said that a joined body in which a catalyst layer is uniformly formed by a spray method can be obtained.
- Japanese Patent Application Laid-Open No. 6-2903 1 discloses a method for manufacturing a cylindrical solid electrolyte fuel cell. As a method, a solid electrolyte-containing slurry is poured into a mold having water absorption and a part of which is provided with a water-resistant or water-repellent member to form a solid electrolyte, and the water-resistant or water-repellent member is removed.
- JP-A-6-72787 discloses a method for producing a cylindrical solid electrolyte fuel cell in which a resin solution in which a catalyst is dispersed after forming an air electrode and a solid electrolyte layer on the surface of a cylindrical support.
- a method is described in which a slurry is sprayed, dried and fired, a composite oxide skin layer is formed by an immersion method, a fuel electrode is formed, and a joined body is obtained.
- JP-A-6-29031 and JP-A-6-72787 have complicated processes, and can continuously obtain a cylindrical joined body. It is difficult.
- the present invention relates to a method for producing a cylindrical fuel cell having a first catalyst layer, an electrolyte layer, and a second catalyst layer, wherein the thicknesses of the first catalyst layer, the electrolyte layer, and the second catalyst layer are as follows.
- the present invention relates to a method for producing a cylindrical fuel cell having a first catalyst layer, an electrolyte layer, and a second catalyst layer, and the first catalyst is sprayed onto the outer surface of the cylindrical support.
- the method further includes a step of drying, and a step of drying the formed second catalyst layer after the step of forming the second catalyst layer, and the steps are preferably performed continuously.
- the spraying method is preferably performed by spraying a paste on a plurality of locations on the outer surface of the cylindrical support.
- the cylindrical support body on which the respective layers are formed is cut to obtain a plurality of fuel cell single cells.
- the cylindrical support is preferably a conductive porous body.
- the present invention is a cylindrical fuel cell manufacturing apparatus having a first catalyst layer, an electrolyte layer, and a second catalyst layer, the transport means transporting a cylindrical support, and the cylindrical shape
- a second spraying means for spraying an electrolyte layer paste to form an electrolyte layer a second drying means for drying the formed electrolyte layer
- a third spraying means for spraying the second catalyst layer paste to form the second catalyst layer, and a third drying means for drying the formed second catalyst layer.
- each of the spraying means of the fuel cell manufacturing apparatus has a plurality of sprays.
- the cylindrical support body is preferably a conductive porous body.
- the present invention relates to a method for manufacturing a cylindrical fuel cell having a first catalyst layer, an electrolyte layer, and a second catalyst layer, and forming each layer on the outer surface of a cylindrical support by a spray method.
- FIG. 1 is a diagram showing an example of the configuration of a fuel cell according to an embodiment of the present invention.
- FIG. 2 is a diagram showing an example of a fuel cell manufacturing apparatus according to an embodiment of the present invention.
- FIG. 3 is a diagram showing an example of a method of obtaining a single cell by cutting cells obtained in the method for manufacturing a fuel cell according to the embodiment of the present invention.
- FIG. 4 is a view showing the arrangement of sprays in the fuel cell manufacturing method according to the embodiment of the present invention.
- a fuel cell according to an embodiment of the present invention includes a first catalyst layer, an electrolyte layer, and a second catalyst layer.
- the fuel cell 1 includes an electrolyte layer 10 and a fuel electrode (an anode) that is a first catalyst layer.
- Catalyst layer) 1 2 air electrode (forced sword catalyst layer) 14, which is the second catalyst layer, and current collector 16.
- a current collector layer may be further formed on the outer surface of the air electrode 14 as the second catalyst layer.
- a fuel electrode 1 2 is provided as a first catalyst layer on the outer surface of a current collector 16 that is a cylindrical support, and an electrolyte layer 10 is provided on the outer surface of the fuel electrode 1 2. Further, an air electrode 14 is provided as a second catalyst layer on the outer surface of the electrolyte layer 10, and a cylindrical joined body (MEA: Membrane Electro Assembl 1 y) 18 is formed.
- MEA Membrane Electro Assembl 1 y
- air electrode 14 is provided as the first catalyst layer on the outer surface of cylindrical current collector 16
- electrolyte layer 10 is provided on the outer surface of air electrode 14, and electrolyte layer 1
- the fuel electrode 12 may be provided as the second catalyst layer on the outer surface of 0, but normally, the fuel electrode 12 is provided as the first catalyst layer, and the air electrode 14 is provided as the second catalyst layer.
- the electrolyte layer 10 is not particularly limited as long as it is a material having high ion conductivity such as proton (H +) or oxygen ion (O 2 —). Examples thereof include a solid polymer electrolyte membrane and a stabilized zirconia membrane. A solid polymer electrolyte membrane such as perfluorosulfonic acid type is preferably used.
- the thickness of the electrolyte layer 10 is, for example, 10 ⁇ ! ⁇ 200 m, preferably 30 ⁇ ⁇ ! The range is ⁇ 50 ⁇ .
- the fuel electrode 1 2 includes a catalyst such as carbon carrying platinum (Pt) or the like together with another metal such as ruthenium (Ru) dispersed in a resin such as a solid polymer electrolyte such as naphthion (registered trademark).
- the film was formed.
- the film thickness of the anode 1 2 is, for example, 1 ⁇ m to 10 0 ⁇ m, preferably 1 ⁇ m to 20 m.
- the air electrode 14 is formed by dispersing a catalyst such as carbon carrying platinum (Pt) or the like in a resin such as a solid polymer electrolyte such as naphthion (registered trademark).
- the film thickness of the air electrode 14 is, for example, 1 ⁇ ! ⁇ 1 0 0 / ⁇ m, preferably 1 ⁇ ! It is in the range of ⁇ 20 ⁇ m.
- the current collector 16 which is a cylindrical support for forming the electrolyte layer 10, the fuel electrode 12, and the air electrode 14, is conductive so as to pass electrons during power generation in the joined body.
- the material is not particularly limited as long as the material has high properties.
- the powdered sintered body, the fibrous sintered body, the fibrous foam, etc. are introduced so that the raw material can be easily diffused as a supply path for the raw material gas or the like. It is preferred to be an electroconductive porous material.
- the highly conductive material include a porous body of a conductive material such as a metal such as gold or platinum, carbon, a titanium or carbon surface coated with a metal such as gold or platinum, or the like.
- the film thickness is, for example, 0.5 mm to l O mm, preferably 1 m n! It is in the range of ⁇ 3 mm.
- the film thickness is, for example, in the range of 0.5 mm to 10 mm, preferably 1 mm to 3 mm 6.
- the hole diameter of the hole provided in the wall surface of the current collector 16 that is a cylindrical hollow body by punching or the like is usually in the range of 0.0 lmm to 1 mm.
- the current collector 16 is used as the cylindrical support.
- Teflon registered trademark
- the present invention is not limited to this.
- Teflon registered trademark
- a cylindrical support such as a metal rod or wire coated with a resin having good releasability, such as a resin rod or wire having good releasability, or Teflon (registered trademark).
- the joined body 18 may be taken out from the support after the joined body 18 is formed.
- the cylindrical support may be in any shape, for example, a cylindrical shape; a polygonal cylinder shape such as a triangular cylinder, a square cylinder, a pentagonal cylinder, or a hexagonal cylinder; Usually cylindrical.
- the term “tubular” includes a solid body in addition to a hollow body.
- the transport direction by the transport means may be the vertical direction or the horizontal direction, but is preferably the vertical direction from the viewpoint of coating uniformity.
- the current collector 16 which is a cylindrical support is composed of a first spraying means 2 2, a first drying means 2 4, a second spraying means 2 6, It is conveyed along the second drying means 28, the third spraying means 30, and the third drying means 3 2.
- the transport direction by the transport means is vertical, the current collector 16 is transported in the vertical direction, and when the transport direction is horizontal, the current collector 16 is transported in the horizontal direction. .
- a fuel electrode paste containing a fuel electrode catalyst or the like is sprayed on the outer surface of the conveyed current collector 16 by the first spraying means 2 2 by a spraying method to form a first catalyst layer.
- a fuel electrode 1 2 is formed.
- the current collector 16 having the fuel electrode 12 formed thereon is continuously conveyed into the first drying means 24, and after the fuel electrode 12 is dried, the second spraying means is continuously provided. 2 Transported toward 6.
- the current collector 16 on which the electrolyte layer 10 is formed is continuously transported into the second drying means 28, and after the electrolyte layer 10 is dried, the third spray is continuously performed. It is conveyed toward means 30.
- an air electrode paste containing an air electrode catalyst or the like is sprayed by the spray method onto the outer surface of the electrolyte layer 10 of the current collector 16 that has been conveyed by the third spraying means 30. An air electrode 14 as the second catalyst layer is formed.
- the current collector 16 formed with the air electrode 14 is continuously conveyed into the third drying means 3 2, and after the air electrode 14 is dried, the current collector 1 6
- the fuel cell 1 is obtained in which the joined body 18 including the fuel electrode 12, the electrolyte layer 10, and the air electrode 14 is formed on the outer surface.
- an air electrode 14 is provided as a first catalyst layer on the outer surface of a cylindrical current collector 16, an electrolyte layer 10 is provided on the outer surface of the air electrode 14, and the electrolyte.
- the current collector 16 may have a length equivalent to that of a single cell normally used as a fuel cell (usually 1 O mn! To 20 O mm). Use a unit that is more than twice the length of the single cell to be used. For example, as shown in Fig.
- a joined body on the outer surface of the current collector 16 with a certain interval After forming 1 8 and drying the second catalyst layer, the current collector 16 formed with the joined body 18 is cut into a length corresponding to each single cell to obtain a plurality of fuel cell single cells. Good.
- catalyst powder for fuel electrode or air electrode is added to a solution in which a resin such as solid polymer electrolyte such as naphthion (registered trademark) is dissolved in an alcohol solvent such as methanol, ethanol or isopropanol.
- a resin such as solid polymer electrolyte such as naphthion (registered trademark) is dissolved in an alcohol solvent such as methanol, ethanol or isopropanol.
- the concentration of the catalyst powder, solid polymer electrolyte, resin, etc. in the paste may be adjusted so that the catalyst layer (fuel electrode and air electrode) and the electrolyte layer can be formed with a uniform film thickness.
- the catalyst powder in the case of a paste for a catalyst layer, in the total weight of the paste, the catalyst powder is in the range of 10% to 50% by weight and the resin is in the range of 10% to 20% by weight.
- the solid polymer electrolyte is in the range of 5% to 30% by weight in the total weight of the paste.
- 1st spraying means 2 2, 2nd spraying means 2 6, 3rd spraying means 3 0 each has a spray nozzle having an ejection hole, a paste tank connected to the spray nozzle and containing a paste, and a compressor for supplying pressure to the spray nozzle.
- the paste is atomized by spraying and sprayed onto the current collector 16.
- the shape of the liquid sprayed from the spray nozzle include a fan shape, a circular entire surface shape, an annular shape, etc. In order to apply uniformly, a fan shape or a circular entire surface shape is preferable. Moreover, it may be sprayed only by the fluid pressure of the paste, or a gas such as air and a paste may be mixed and sprayed.
- a plurality of sprays 34 are used to spray paste 36 on a plurality of locations on the outer surface of current collector 16. It is preferable. At this time, the spraying of the paste 36 with a plurality of sprays 34 determines the number and arrangement of the sprays 34 so that the spraying ranges do not overlap, and sets the spraying range of each spray 34. It is preferable to carry out. You can also use one or more sprays to spray the paste while rotating the current collector 16 about its axis, preferably at a constant speed.
- the spraying distance is preferably in the range of 0.1 mm to 300 mm.
- the spray distance refers to the distance from the outer surface of the current collector 16 to be sprayed to the tip of the spray nozzle. If the spraying distance is less than 0.1 mm, the tip of the spray nozzle may be too close to the outer surface of the current collector 16, making spraying difficult. If the spraying distance exceeds 30 Omm, the sprayed liquid will scatter and spray around. Efficiency may be reduced.
- the spraying pressure is preferably in the range of 0. IMP a to 20 OMPa. If the liquid pressure is less than 0. IMP a, the spray may be too weak to be applied uniformly. If it exceeds 200 MPa, the spray will be too strong and the sprayed liquid will scatter to the surroundings. May decrease.
- Paste droplet diameter when sprayed by spray is 0. ⁇ ⁇ ! ⁇ 10; preferably in the range of zm, 0.1 ⁇ ! More preferably, it is in the range of ⁇ 2 / zm.
- the droplet diameter should be as small as possible. If the diameter of the droplet is less than 0.3 ⁇ , the droplet may be too small and the mist may be scattered to reduce the spraying efficiency. If the droplet diameter exceeds ⁇ ⁇ , the droplet is too large. It may be difficult to apply evenly.
- the paste temperature during spraying is usually in the range of 20 ° C to 70 ° C.
- the spraying conditions such as the shape of the spray liquid, number of sprays, placement position, spraying range, spraying pressure, droplet diameter, paste temperature, etc. depend on the desired film thickness, the properties of the paste used, etc. Each may be determined in consideration of each other, and the same condition may be applied to the first spraying means 22, the second spraying means 26, and the third spraying means 30, or different conditions. By controlling these conditions, the fuel electrode 12, the electrolyte layer 10, and the air electrode 14 can be uniformly formed on the outer surface of the current collector 16.
- the first drying means 24, the second drying means 28, and the third drying means 32 are not particularly limited as long as they can dry the formed film.
- warm air Examples include dryers, blower dryers, and heat dryers.
- the drying temperature in the first drying means 24, the second drying means 28, and the third drying means 32 depends on the boiling point of the solvent used in each paste, etc.
- the temperature may be set such that the membrane or the like is not deteriorated. For example, when methanol, ethanol, isopropanol or the like is used, the temperature is set to 80 to 100 ° C.
- the first drying means 24, the second drying means 28, and the third drying means 32 may be the same conditions or different conditions.
- the first drying means 24, the second drying means 2 8 and the second spraying means respectively. You do not need to provide the drying means 3 3, but you can have at least one of them.
- the fuel electrode 12, the electrolyte layer 10, and the air electrode 1 are formed on the outer surface of the current collector 16 by the first spraying means 2 2, the second spraying means 26, and the third spraying means 30. After forming 4 continuously, it may be dried together by the third drying means 32.
- the first spraying means 22, the second spraying means 26, and the third are continuously formed on the outer surface of the current collector 16 by the spraying means 30, and then may be naturally dried.
- the conveying speed by the conveying means is usually 1 ni mZm in to 5 ⁇ 10 4 mm / min.
- the conveyance speed should be as fast as possible from the viewpoint of manufacturing efficiency. However, considering the uniformity of coating by the spraying means and the drying of the coating film, it is actually 5 X 10 4 mm / min or more. Not right.
- the current collector layer further formed on the outer surface of 1 4 is electrically connected to an external circuit, and the fuel electrode 1 2 and the air electrode 1 4 are supplied with raw materials and operated to function as a battery. Can do.
- Examples of the raw material supplied to the fuel electrode 1 or 2 include reducing gas (fuel gas) such as hydrogen and methane or liquid fuel such as methanol.
- Examples of the raw material supplied to the air electrode 14 include oxidizing gases such as oxygen and air.
- the fuel electrode 1 2 when the raw material supplied to the fuel electrode 1 2 is operated as hydrogen gas and the raw material supplied to the air electrode 14 is operated as air, the fuel electrode 1 2
- the hydrogen ion (H +) and the electrons (e _) are generated from the hydrogen gas (H 2 ) through the reaction formula shown by.
- the electrons (e1) pass from the current collector 16 through the external circuit, and reach the air electrode 14 from the current collector provided on the outer surface of the air electrode 14 as necessary.
- oxygen (0 2 ) in the supplied air hydrogen ions (H +) that passed through the electrolyte layer 10, and electrons (e—) that reached the air electrode 14 through the external circuit ,
- the film forming process of each layer by the spray method is continuously performed on the outer surface of the cylindrical support.
- the film thickness uniformity of each layer of the first catalyst layer, the electrolyte layer, and the second catalyst layer is good by performing the film forming process and the drying process of each layer by the spray method continuously.
- this manufacturing apparatus and manufacturing method can reduce the number of processes at the time of fuel cell creation, thereby reducing costs.
- the support is directly immersed in and drawn out from the material solution, and therefore unnecessary catalyst layers are removed in the post-process for the parts where the catalyst layer is not necessary (for example, the end of the support).
- intermittent spraying can be performed. Therefore, by removing the spray coating of the portion where the catalyst layer is unnecessary, the removal process in the post-process is performed. It becomes unnecessary and the number of processes can be reduced.
- Such intermittent coating can be performed only by a spray method. Also, by using a current collector as a cylindrical support, a joined body can be manufactured as a single body on the current collector.
- the current collector is easily provided in the joined body.
- the adhesion between the current collector and the joined body is improved compared to the method in which the current collector is inserted later, and the resistance of the cell during power generation can be reduced.
- the paste can be applied to the current collector by putting a time between the film forming process and the drying process. Bleeding can be suppressed, and a uniform joined body on the current collector can be formed.
- the fuel cell according to the present embodiment can obtain necessary current and voltage by assembling a plurality of cylindrical fuel cells (single cells) and connecting them in series.
- a plurality of cylindrical fuel cells (single cells) may be assembled and connected in parallel.
- the fuel cell according to the present embodiment has a simple structure and can be reduced in size and weight, it can be used as a small power source for mopile equipment such as a mobile phone and a portable personal computer;
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Abstract
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Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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DE112006000301T DE112006000301T5 (de) | 2005-02-01 | 2006-02-01 | Verfahren zum Herstellen einer Brennstoffzelle und Vorrichtung zum Herstellen einer Brennstoffzelle |
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JP2005-025629 | 2005-02-01 | ||
JP2005025629A JP2006216280A (ja) | 2005-02-01 | 2005-02-01 | 燃料電池の製造方法及び燃料電池の製造装置 |
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US (1) | US20080131586A1 (ja) |
JP (1) | JP2006216280A (ja) |
CN (1) | CN101111960A (ja) |
DE (1) | DE112006000301T5 (ja) |
WO (1) | WO2006082995A1 (ja) |
Cited By (1)
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JP2013175305A (ja) * | 2012-02-23 | 2013-09-05 | Mitsubishi Heavy Ind Ltd | 固体酸化物形燃料電池の製造方法及び固体酸化物形燃料電池、並びに、成膜装置 |
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JP5061440B2 (ja) * | 2005-09-08 | 2012-10-31 | トヨタ自動車株式会社 | 燃料電池の製造方法及び燃料電池の製造装置 |
JP2010062062A (ja) * | 2008-09-05 | 2010-03-18 | Toppan Printing Co Ltd | 膜電極接合体の製造方法、膜電極接合体、固体高分子型燃料電池 |
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Also Published As
Publication number | Publication date |
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JP2006216280A (ja) | 2006-08-17 |
CN101111960A (zh) | 2008-01-23 |
US20080131586A1 (en) | 2008-06-05 |
DE112006000301T5 (de) | 2007-12-20 |
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