WO2014076863A1 - 多孔質層部材の製造方法、及び多孔質層部材を含む膜電極ガス拡散層接合体の製造方法 - Google Patents
多孔質層部材の製造方法、及び多孔質層部材を含む膜電極ガス拡散層接合体の製造方法 Download PDFInfo
- Publication number
- WO2014076863A1 WO2014076863A1 PCT/JP2013/005799 JP2013005799W WO2014076863A1 WO 2014076863 A1 WO2014076863 A1 WO 2014076863A1 JP 2013005799 W JP2013005799 W JP 2013005799W WO 2014076863 A1 WO2014076863 A1 WO 2014076863A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- porous layer
- electrolyte membrane
- layer
- sheet
- mpl
- Prior art date
Links
Images
Classifications
-
- 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
- H01M4/8605—Porous electrodes
-
- 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
- H01M4/8803—Supports for the deposition of the catalytic active composition
- H01M4/8807—Gas diffusion layers
-
- 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
-
- 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
- H01M4/8803—Supports for the deposition of the catalytic active composition
- H01M4/881—Electrolytic membranes
-
- 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
- H01M4/8864—Extrusion
-
- 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
- H01M8/023—Porous and characterised by the material
- H01M8/0234—Carbonaceous material
-
- 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
- H01M8/023—Porous and characterised by the material
- H01M8/0239—Organic resins; Organic polymers
-
- 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
- H01M8/023—Porous and characterised by the material
- H01M8/0241—Composites
- H01M8/0243—Composites in the form of mixtures
-
- 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
- H01M8/023—Porous and characterised by the material
- H01M8/0241—Composites
- H01M8/0245—Composites in the form of layered or coated products
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/10—Fuel cells with solid electrolytes
- H01M8/1004—Fuel cells with solid electrolytes characterised by membrane-electrode assemblies [MEA]
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/10—Fuel cells with solid electrolytes
- H01M8/1007—Fuel cells with solid electrolytes with both reactants being gaseous or vaporised
-
- 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
- H01M2008/1095—Fuel cells with polymeric electrolytes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2250/00—Fuel cells for particular applications; Specific features of fuel cell system
- H01M2250/20—Fuel cells in motive systems, e.g. vehicle, ship, plane
-
- 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
-
- 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
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/40—Application of hydrogen technology to transportation, e.g. using fuel cells
Definitions
- the present invention relates to a porous layer member used for a fuel cell, and a membrane electrode gas diffusion layer assembly including the porous layer member.
- a fuel cell having a structure in which a layer in which many fine pores are formed (hereinafter referred to as “porous layer”) is used between a catalyst layer and a gas diffusion layer is used.
- porous layer a layer in which many fine pores are formed
- a method for forming a porous layer for example, as described in Patent Document 1, a slurry containing carbon black powder and polytetrafluoroethylene (PTFE) -containing powder and PTFE dispersion is generated. In some cases, such a slurry is applied to the gas diffusion layer.
- PTFE polytetrafluoroethylene
- Patent Document 2 first, carbon powder and fine powder of PTFE are mixed by a mixer, and a processing aid is added to obtain an admixture.
- a method may be employed in which a film is obtained by extruding and rolling the admixture, and the film is sandwiched between a catalyst layer and a gas diffusion layer.
- a precipitant is added to a mixed liquid of carbon powder and a dispersion of PTFE to coprecipitate carbon and PTFE, and the coprecipitate is filtered. And after drying, processing aids are added to obtain a blend.
- a method may be employed in which a film is obtained by extruding and rolling the admixture, and the film is sandwiched between a catalyst layer and a gas diffusion layer.
- the slurry penetrates into the gas diffusion layer when the slurry is applied.
- the porous layer obtained by such a method is used for a fuel cell, there is a problem that water accumulates in a portion soaked with the slurry and the drainage performance of the fuel cell is lowered. Further, since the slurry soaks into the gas diffusion layer, there is a problem that the gas diffusion region is reduced and the gas diffusibility is lowered.
- the present invention has been made to solve at least a part of the problems described above, and can be realized as the following forms.
- a method for producing a porous layer member for forming a porous layer disposed between a gas diffusion layer and a catalyst layer in a fuel cell includes (a) a step of obtaining a powder containing carbon and a water-repellent resin by spray drying a mixed solution containing carbon and the water-repellent resin, and (b) a paste containing the powder. And (c) a step of obtaining the sheet-like porous layer member by extruding or rolling the paste.
- a sheet-like porous layer member can be obtained, and the porous layer can be formed by joining the porous layer member to the gas diffusion layer or the catalyst layer.
- the penetration of the porous layer member into the gas diffusion layer can be suppressed, it is possible to suppress a decrease in drainage and gas diffusibility in the gas diffusion layer.
- a powder serving as a base material for the porous layer member is obtained. Therefore, the carbon and the water-repellent resin are dispersed substantially uniformly in the powder. be able to. Therefore, since uneven distribution of carbon and the water-repellent resin can be suppressed in the porous layer, the occurrence of uneven drainage in the porous layer can be suppressed.
- the powder containing carbon and water-repellent resin is produced
- the powder concerning this can be obtained in a comparatively short time.
- a sheet-like member is obtained as the porous layer member, the step of joining the porous layer member and the step of joining the gas diffusion layer member can be different from each other.
- the water repellent resin may include polytetrafluoroethylene. According to the manufacturing method of this embodiment, high water repellency in the porous layer can be obtained.
- the manufacturing method of the membrane electrode gas diffusion layer assembly containing the porous layer member manufactured by the manufacturing method of the said form includes (d) a step of joining the porous layer member and the catalyst layer member by applying a first force, (e) a gas diffusion layer member, and the catalyst layer member. Joining the porous layer member to which the member is joined by applying a second force that is weaker than the first force.
- the second force applied when the porous layer member and the gas diffusion layer member are joined is applied when the porous member and the catalyst layer member are joined.
- the gas diffusion layer member can be prevented from being pierced across the porous layer to which the gas diffusion layer member is bonded, the catalyst layers of both electrodes, and the electrolyte membrane. For this reason, the short circuit of both poles can be suppressed.
- the step of preparing an electrolyte membrane sheet further comprising (f) a carrier film and an electrolyte membrane disposed on the carrier film; and (g) of the electrolyte membrane sheet.
- the porous layer member since the porous layer member is bonded to one pole side before peeling the carrier film from the electrolyte membrane sheet, the porous layer member is peeled off after the carrier film is peeled off. However, it can protect the electrolyte membrane in place of the carrier film and suppress deformation of the electrolyte membrane.
- the present invention can be realized in various modes, for example, a fuel cell including a porous layer member and a membrane electrode gas diffusion layer assembly, a method for manufacturing the fuel cell, and a vehicle equipped with the fuel cell. Or the like.
- FIG. 1 is a flowchart showing a procedure of a manufacturing method of a membrane electrode diffusion layer assembly (hereinafter referred to as “MEGA”) used in a fuel cell.
- MEGA membrane electrode diffusion layer assembly
- FIG. 2 is a flowchart showing the procedure for producing the MPL sheet in step S105.
- a mixed liquid of carbon as a conductive material and polytetrafluoroethylene (PTFE) as a water repellent resin is generated (step S205).
- PTFE polytetrafluoroethylene
- carbon is added and the mixed solution is further dispersed.
- a PTFE dispersion is added to this mixed liquid and stirring, a mixed liquid of carbon and PTFE is generated.
- a nonionic surfactant is preferable because it is hardly affected by pH.
- carbon for example, acetylene black, furnace black, thermal black, graphite and the like can be employed.
- any resin having water repellency such as PFA (polytetrafluoroethylene is a tetrafluoroethylene resin whose formal name is used), ETFE (fluorine resin obtained by tetrafluoroethylene and ethylene copolymer) is used. It may be adopted.
- PTFE-coated carbon powder is produced by spray drying the mixed liquid of carbon and PTFE obtained in step S205 (step S210).
- step S210 By adding and mixing a lubricant to the PTFE-coated carbon powder generated in step S210, a paste containing the PTFE-coated carbon powder is generated (step S215).
- step S210 the mixture of carbon and PTFE is spray-dried when carbon and PTFE are uniformly dispersed in the paste when the paste is generated using the powder obtained by spray-drying. Because you can.
- the MPL sheet is produced by extruding and rolling the paste generated in step S215 (step S220).
- purified in step S215 can produce a bead using an extruder, and this bead can be rolled using a heating roll mill, and an MPL sheet can be produced.
- the MPL sheet produced in step S220 is dried to remove the lubricant, and then fired to remove the surfactant, thereby completing the MPL sheet (step S225).
- a large number of fine pores are formed in the completed MPL sheet. Therefore, when such an MPL sheet is used in a fuel cell, it is considered that water generated by power generation can be discharged to the gas diffusion layer using a capillary phenomenon in fine pores. .
- the drying step may be omitted and only the firing step may be performed, and both the lubricant and the surfactant may be removed in the firing step.
- an electrolyte membrane sheet, a catalyst layer ink, and a gas diffusion layer (hereinafter referred to as “GDL”) member are prepared (step S110).
- the electrolyte membrane sheet includes a carrier film and a sheet-like electrolyte membrane attached to the carrier film.
- the carrier film is a sheet for protecting the electrolyte membrane, and a film made of a synthetic resin such as polyethylene terephthalate (PET) or ETFE can be adopted.
- electrolyte membranes examples include fluororesin ion exchanges containing sulfonic acid groups such as Nafion (registered trademark) of DuPont, Aciplex (registered trademark) of Asahi Kasei Corporation, and Flemion (registered trademark) of Asahi Glass Co., Ltd.
- a membrane can be employed.
- an aqueous solution containing a catalyst carrier such as platinum-carrying carbon and an electrolyte solution can be employed.
- a carbon porous body such as carbon paper or carbon cloth, or a metal porous body such as a metal mesh or a foam metal can be used.
- group carbon fiber a pitch type
- group carbon fiber a cellulose type carbon fiber, a polynodic type carbon fiber, etc.
- PAN-based carbon fibers are preferably used because they have few impurities.
- the catalyst layer ink prepared in step S110 is applied to the exposed surface of the electrolyte membrane sheet prepared in step S110 (the surface of the electrolyte not attached to the carrier sheet) (step S115). By this step, one of the two electrode catalyst layers is formed.
- step S120 The electrolyte membrane sheet on which the catalyst layer of one electrode is formed and the MPL sheet produced in step S105 are joined by applying a first pressure (step S120).
- step S120 the MPL sheet is bonded to the surface of the electrolyte membrane sheet on which the catalyst layer is formed by applying the catalyst layer ink.
- the MPL layer of one pole is formed.
- the term “MPL sheet” indicates a member for forming the MPL layer
- MPL layer indicates a member for which the MPL sheet forms another layer or another layer. The layer formed by joining with is shown.
- FIG. 3 is an explanatory diagram schematically showing the processing of step S115 and step S120 of FIG. 3A shows the process of step S115, and FIG. 3B shows the process of step S120.
- step S115 is executed using a die coater.
- the die coater includes a feed roller 100, a transport roller 105, a die head 120, a take-up roller 110, and a dryer 130.
- the feeding roller 100 feeds the electrolyte membrane sheet 10.
- the electrolyte membrane sheet 10 has a configuration in which an electrolyte membrane 12 is disposed on a carrier film 11.
- the transport roller 105 transports the electrolyte membrane sheet 10 that is fed from the roller 100.
- the die head 120 is supplied with catalyst layer ink.
- the die head 120 applies the supplied catalyst layer ink to the conveyed electrolyte membrane sheet 10.
- the dryer 130 is disposed in the conveyance path of the electrolyte membrane sheet 10 and dries the electrolyte membrane sheet 10 coated with the catalyst layer ink.
- the winding roller 110 winds up the electrolyte membrane sheet 20 on which the catalyst layer 13 is formed with the catalyst layer ink.
- step S120 the electrolyte membrane sheet 20 and the MPL are fed using the feed roller 205, the feed roller 210, the pressure roller 300, the transport roller 305, and the take-up roller 215.
- the sheet 30 is joined.
- the feeding roller 205 feeds the electrolyte membrane sheet 20.
- the feeding roller 210 feeds the MPL sheet 30 produced in step S105.
- the pressure roller 300 joins the electrolyte membrane sheet 20 and the MPL sheet 30 while applying a first pressure.
- FIG. 3B when the electrolyte membrane sheet 20 and the MPL sheet 30 are joined by the pressure roller 300, the carrier film 11, the electrolyte membrane 12, the catalyst layer 13, and the MPL layer 14 are formed.
- the formed electrolyte membrane sheet 40 is generated.
- the conveyance roller 305 conveys the electrolyte membrane sheet 40.
- the take-up roller 215 takes up the electrolyte membrane sheet 40.
- step S120 the carrier sheet is peeled from the electrolyte membrane sheet, and the catalyst layer ink is formed on the surface of the electrolyte membrane sheet opposite to the surface on which the catalyst layer and the MPL layer are formed. Is applied (step S125). By this process, a catalyst layer on the opposite side to the catalyst layer formed in step S115 is formed.
- step S130 The electrolyte membrane sheet on which the catalyst layer is formed in step S125 and the MPL sheet prepared in step S105 are joined by applying a first pressure (step S130).
- step S130 the MPL sheet is joined to the surface of the electrolyte membrane sheet on which the catalyst layer was formed in step S125.
- the MPL layer on the opposite side to the MPL layer formed in step S120 is formed.
- step S135 The electrolyte membrane sheet on which the bipolar catalyst layer and the bipolar MPL layer are formed is joined to the GDL member by applying a second pressure (step S135).
- step S135 the GDL member is bonded to both surfaces of the electrolyte membrane sheet (both surfaces on which the MPL layer is formed). By this step, bipolar GDL layers are formed.
- the electrolyte membrane (junction) in which the bipolar catalyst layer, the bipolar MPL layer, and the bipolar GDL layer are formed is hot-pressed to complete the MEGA (step S140).
- FIG. 4 is an explanatory diagram schematically showing the processing of steps S125, S130, S135, and S140 of FIG. 4A shows the process of step S125, and FIG. 4B shows the processes of steps S130, S135, and S140.
- step S125 is executed using a die coater similar to the die coater shown in FIG.
- the die coater used in step S125 differs from the die coater shown in FIG. 3A in that it includes a peeling roller 410 and a take-up roller 415.
- the feeding roller 100 feeds the electrolyte membrane sheet 40 generated in step S120.
- the peeling roller 410 peels the carrier film 11 from the electrolyte membrane sheet 40 and conveys the peeled carrier film 11.
- the take-up roller 415 takes up the carrier film 11 peeled from the electrolyte membrane sheet 40.
- the die head 120 applies the catalyst layer ink to the surface of the electrolyte membrane 12 exposed by peeling off the carrier film 11.
- the transport roller 105 transports the electrolyte membrane sheet 50 coated with the catalyst layer ink by the die head 120.
- the electrolyte membrane sheet 50 has a configuration in which an MPL layer 14, a catalyst layer 13, an electrolyte membrane 12, and a catalyst layer 15 are laminated.
- the catalyst layer 15 is formed in step S125.
- the dryer 130 dries the electrolyte membrane sheet 50.
- the winding roller 110 winds up the dried electrolyte membrane sheet 50.
- step S130 the electrolyte membrane sheet 50 and the MPL sheet 30 are joined using the feeding roller 500, the feeding roller 505, and the first pressure roller 600.
- the roller 500 feeds out the electrolyte membrane sheet 50 on which the catalyst layer is formed in step S125.
- the feeding roller 505 feeds the MPL sheet 30 produced in step S105.
- the first pressure roller 600 joins the electrolyte membrane sheet 50 and the MPL sheet 30 while applying a first pressure. Through this step, the MPL layer 16 is formed on the catalyst layer 15.
- step S135 the GDL member is formed on the catalyst layer using the feeding roller 510, the feeding roller 515, the cutting machine 530, the cutting machine 535, and the second pressure roller 610. Be joined.
- the two feeding rollers 510 and 515 each feed out the GDL member prepared in step S110.
- the cutting machine 530 cuts the GDL member fed from the feeding roller 510 into a predetermined size.
- the cutting machine 535 cuts the GDL member fed from the feeding roller 515 into a predetermined size.
- the GDL member cut by the cutting machine 530 is disposed on the MPL layer 14 of one pole.
- the GDL member cut by the cutting machine 535 is disposed on the MPL layer 16 of the other pole.
- the second pressure roller 610 joins the electrolyte film on which the MPL layer is formed in step S130 and the GDL member while applying a second pressure. By this step, GDL layers are formed on the catalyst layers of both electrodes, respectively.
- the second pressure is smaller than the first pressure in step S120 and step S130. This is because when a GDL member is joined, a part of the GDL member (for example, carbon fibers constituting the carbon paper) extends over the adjacent catalyst layer, the electrolyte membrane 12, and the other electrode side catalyst layer. This is to prevent the occurrence of a short circuit due to the piercing.
- a part of the GDL member for example, carbon fibers constituting the carbon paper
- the joined body 60 thus obtained is formed on the electrolyte membrane 12, the two catalyst layers 13 and 15 formed on the electrolyte membrane 12, and the catalyst layer 13, as shown in FIG. MPL layer 14, MPL layer 16 formed on catalyst layer 15, GDL layer 18 formed on MPL layer 14, and GDL layer 17 formed on MPL layer 16 are laminated.
- step S140 the bonded body 60 is hot-pressed using a hot press machine 545.
- the MEGA thus completed is sandwiched between two separators to constitute a fuel cell.
- the MPL sheet is formed, and the MPL layer is formed by joining the electrolyte membrane sheet on which the catalyst layer is formed and the MPL sheet.
- the member can be prevented from penetrating into the gas diffusion layer. Accordingly, it is possible to suppress the deterioration of drainage due to the penetration of the base material of the MPL layer into the gas diffusion layer and the decrease in gas diffusion.
- the step of joining the electrolyte membrane sheet on which the catalyst layer is formed and the MPL sheet (steps S120 and S130), the electrolyte membrane sheet on which the MPL layer is formed, The step of joining the GDL member (step S135) can be separated.
- the pressure (first pressure) applied when joining the electrolyte membrane sheet and the MPL sheet is different from the pressure (second pressure) applied when joining the electrolyte membrane sheet and the GDL member.
- the MPL layer and the catalyst layer can be closely joined by relatively increasing the pressure (first pressure) applied when joining the electrolyte membrane sheet and the MPL sheet.
- the drainage property of the water which exists in a catalyst layer can be improved. Moreover, it can suppress that a GDL member pierces over an electrolyte membrane and the catalyst layer of both electrodes by making comparatively small the pressure (2nd pressure) applied when joining an electrolyte membrane sheet and a GDL member. For this reason, the short circuit of both poles can be suppressed.
- a mixture (powder) serving as the base material of the MPL sheet is produced by spray drying a mixed solution containing carbon and PTFE, carbon and PTFE can be uniformly dispersed in the mixture. Therefore, it is possible to suppress the uneven distribution of carbon and PTFE in the MPL layer. Moreover, since the mixture of carbon and PTFE is produced by spray drying, the mixture can be obtained in a relatively short period of time. Therefore, the MEGA manufacturing efficiency can be improved.
- the MPL sheet is bonded onto the catalyst layer on one pole side in step S120, after the carrier film is peeled off in step S125, the deformation of the electrolyte membrane can be suppressed by the bonded MPL sheet. it can.
- the aforementioned MPL sheet corresponds to the porous layer member in the claims.
- the MPL layer corresponds to the porous layer in the claims, and PTFE corresponds to the water repellent resin in the claims.
- step S205 First, Triton X was added as a surfactant to ion-exchanged water, and then the aqueous solution was stirred for 10 minutes using a stirrer. At this time, the rotation speed of the stirrer was set to a rotation speed that does not generate bubbles. The amount of Triton X added was such that the content of Triton X in the aqueous solution was 10 wt%.
- acetylene black (trade name: HS-100, Electrochemical Industry) was added as carbon to the aqueous solution. The aqueous solution to which acetylene black was added was stirred using a homomixer to disperse acetylene black.
- Step S210 PTFE-coated carbon powder was obtained from the mixed solution obtained in Step S205 using a spray drying apparatus (Fujisaki Electric).
- a spray drying apparatus Flujisaki Electric
- the hot air temperature was set to 150 ° C.
- the dropping condition of the mixed solution was set to 50 cc / min.
- the particle diameter of the obtained PTFE-coated carbon was 3 to 7 ⁇ m.
- Step S215 Isopar M (Exxon Chemical) as a lubricant was added to the PTFE-coated carbon powder and mixed for 1 hour in a ball mill to produce a mixture (paste). Thereafter, the produced paste was left at room temperature (approximately 25 ° C.) for 8 hours. In addition, the addition amount (concentration) of Isopar M was an amount that would be 30 wt% of the entire mixture.
- step S220 first, a bead of the paste produced in step S215 was generated using a ram extruder (Tabata Machine Industries).
- the bead diameter was set to 20 mm
- the cylinder temperature was set to 50 ° C.
- the extrusion speed was set to 10 mm / min.
- the cylinder temperature an arbitrary temperature between room temperature (approximately 25 ° C.) and 70 ° C. can be set.
- the extrusion speed an arbitrary speed between 1 mm / min and 20 mm / min can be set.
- the bead was rolled to 0.05 mm using a heating roll mill.
- the roll temperature was set to 70 ° C., and the feed rate was set to 0.5 m / min.
- the rolling was performed in two stages. Specifically, as a first stage, the bead was rolled into a sheet having a thickness of 0.2 mm, and as a second stage, a sheet having a thickness of 0.2 mm was rolled into a sheet having a thickness of 0.05 mm. .
- drying conditions in step S225 the drying temperature was set to 150 ° C., and the drying time was set to 1 hour. Further, as the firing conditions in step S225, the firing temperature was set to 300 ° C., and the firing time was set to 10 minutes.
- First comparative example The MEGA of the first comparative example was manufactured. In the MEGA manufacturing method of the first comparative example, instead of step S210, the following treatment was performed to generate PTFE-coated carbon powder. First, the liquid mixture obtained in step S205 was centrifuged with a centrifuge to obtain a precipitate. Next, the precipitate was dried in a drying oven set at 150 ° C. to obtain PTFE-coated carbon powder. The particle diameter of the PTFE-coated carbon obtained in the first comparative example was 4 to 7 ⁇ m. Other processes (steps S205, S215-S225, and S110-S135) were the same as those in the above-described embodiment.
- Second comparative example The MEGA of the second comparative example was manufactured.
- acetylene black (HS-100, electrochemical industry) and PTFE powder (M-111, Daikin Industries) were used using a V blender. By mixing for 30 minutes, a mixture of carbon and PTFE was obtained. In the mixture, the content of acetylene black was 60 wt%, and the content of PTFE powder was 40 wt%. The average particle size of the PTFE powder was approximately 30 ⁇ m.
- the other processes steps S215, S220, S225, and S110-S135) are the same as those in the above-described embodiment.
- a MEGA of the third comparative example was manufactured.
- the MPL layer was formed on the gas diffusion layer by applying the liquid mixture obtained in step S205 to carbon paper.
- the composition of the mixed solution was a composition suitable for application to carbon paper.
- a dispersion of PTFE was added so that the amount of PTFE (solid matter) in the mixed solution was 20 wt%.
- the catalyst layer ink was applied to both surfaces of the electrolyte membrane to form a catalyst layer, and the electrolyte membrane on which the catalyst layer was formed and the gas diffusion layer on which the MPL layer was formed were joined to manufacture MEGA.
- the PTFE-coated carbon powder is generated from a precipitate obtained by centrifuging the mixed solution. Therefore, it is presumed that the dispersibility of carbon and PTFE in the PTFE-coated carbon is low as compared with the configuration in which the PTFE-coated carbon powder is obtained by spray drying as in the examples. For this reason, when the fuel cell is configured, it is presumed that the drainage property in the MPL layer is uneven and the power generation performance is lower than that in the example.
- the average particle diameter (approximately 30 ⁇ m) of the PTFE powder used in the second comparative example is very large compared to the average particle diameter (approximately 0.3 ⁇ m) of PTFE in the PTFE dispersion in the examples. For this reason, when mixing carbon powder and PTFE powder, it is hard to mix carbon powder and PTFE powder uniformly. In addition, since the powders are mixed in the second comparative example, it is not easy to uniformly disperse carbon and PTFE compared to the examples. For these reasons, it is presumed that when the fuel cell is constructed, the drainage performance in the MPL layer is uneven, and the power generation performance is lower than in the examples.
- the mixed liquid of carbon and PTFE is applied to the carbon paper which is the base material of the gas diffusion layer, the mixed liquid penetrates into the carbon paper. For this reason, when a fuel cell is configured, water tends to accumulate in a portion of the gas diffusion layer (carbon paper) where the mixed liquid has soaked, and drainage performance is reduced. When the portion where the mixed liquid is soaked in the carbon paper is observed in detail, a portion where the mixed liquid is not soaked along the thickness direction of the carbon paper may be formed between the portions where the mixed liquid is soaked. In such a part, water is easily collected by a capillary phenomenon or the like in the part soaked with the mixed liquid, and water is not easily discharged. For this reason, it is considered that water easily collects in such a portion.
- the gas diffusion region decreases and the gas diffusibility decreases.
- the drainage property in the MPL layer is uneven, or the gas diffusibility is inhibited, so that the power generation efficiency is lower than that in the example. Presumed to be.
- the MPL layer of one pole and the MPL layer of the other pole are formed in different steps (steps S120 and S130), but the present invention is not limited to this. is not.
- a catalyst layer of both electrodes may be formed, and then the MPL sheet may be simultaneously bonded to both electrodes to form the MPL layers of both electrodes at the same time.
- the GDL layers of both poles are formed at the same time, but instead, the GDL layers of the respective poles may be formed at different timings (steps).
- the joined body including the gas diffusion layer is manufactured as the MEGA.
- a structure in which a joined body including the other layers excluding the gas diffusion layer is manufactured may be employed.
- the fuel cell can be configured by joining the completed MEGA and the GDL member and sandwiching them with the separator.
- the catalyst layer ink was applied as a method of forming the bipolar catalyst layer, but instead of this, a catalyst layer sheet was prepared in advance, similar to the MPL sheet, A bipolar electrode catalyst layer may be formed by bonding such a sheet to an electrolyte membrane.
- the pressure (first pressure) applied when the MPL sheets are joined is smaller than the pressure (second pressure) applied when the GDL members are joined. It is not limited to. A configuration in which the first pressure and the second pressure are equal or a configuration in which the first pressure is larger than the second pressure may be employed.
- the present invention is not limited to the above-described embodiments, examples, and modifications, and can be realized with various configurations without departing from the spirit of the invention.
- the technical features in the embodiments and the modifications corresponding to the technical features in each embodiment described in the summary section of the invention are to solve some or all of the above-described problems, or In order to achieve part or all of the effects, replacement or combination can be performed as appropriate. Further, if the technical feature is not described as essential in the present specification, it can be deleted as appropriate.
- Electrolyte membrane sheet 11 ... Carrier film 12 . Electrolyte membrane 13 . Catalyst layer 14 ... MPL layer 15 ... Catalyst layer 20 . Electrolyte membrane sheet 40 . Electrolyte membrane sheet 50 ... Electrolyte membrane sheet 60 ... Assembly 100 ... Feeding roller 105 ... Conveying roller 110 ... take-up roller 120 ... die head 130 ... dryer 205 ... feeding roller 210 ... feeding roller 215 ... winding roller 300 ... pressure roller 305 ... conveying roller 410 ... peeling roller 415 ... take-up roller 500 ... feeding roller 505 ... Feeding roller 510 ... Feeding roller 515 ... Feeding roller 530 ... Cutting machine 535 ... Cutting machine 545 ... Hot press machine 600 ... First pressure roller 610 ... Second pressure roller
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Composite Materials (AREA)
- Fuel Cell (AREA)
- Inert Electrodes (AREA)
Abstract
Description
図1は、燃料電池に用いられる膜電極拡散層接合体(Membrane Electrode & Gas diffusion Layer Assembly、以下「MEGA」と呼ぶ)の製造方法の手順を示すフローチャートである。図1に示すように、まず、MPL(Micro Porous Layer)シートの作製が行われる(ステップS105)。MPLシートは、燃料電池において触媒層とガス拡散層との間に配置され、MPL層を形成する。
B1.MPLシートの作製:
ステップS205において、まず、イオン交換水に界面活性剤としてTritonXを添加した後、スターラーを用いて水溶液を10分間攪拌した。このとき、スターラーの回転速度として、泡が発生しない程度の回転速度に設定した。なお、TritonXの添加量を、水溶液におけるTritonXの含有率が10wt%となる程度の量とした。次に、水溶液にカーボンとしてアセチレンブラック(商品名:HS-100,電気化学工業)を添加した。アセチレンブラックを添加した水溶液をホモミキサーを用いて攪拌し、アセチレンブラックを分散させた。攪拌時間を1ないし3時間に設定することにより、ダマの少ない均質な混合液(カーボンブラックスラリー)を得ることができた。次に、得られた混合液にPTFEの分散液としてD-111(ダイキン工業)を添加した。PTFEの分散液の添加量は、混合液におけるPTFE(固形物)の含有率が40wt%となる程度の量とした。次に、PTFEの分散液が添加された混合液を、プラネタリーミキサーを用いて10分間攪拌した。
GDL部材として、PAN系のカーボン繊維からなるカーボンペーパーを用いた。ステップS120及びステップS130における第1の圧力を、3MPaに設定した。また、ステップS135における第2の圧力を、1MPaに設定した。
第1比較例のMEGAを製造した。第1比較例のMEGAの製造方法では、ステップS210に代えて、以下の処理を行ってPTFE被覆カーボン粉体を生成した。まず、ステップS205で得られた混合液を遠心分離機にて遠心分離させて、沈殿物を得た。次に、かかる沈殿物を150℃に設定した乾燥炉にて乾燥させ、PTFE被覆カーボン粉体を得た。第1比較例において得られたPTFE被覆カーボンの粒子径は、4ないし7μmであった。他の処理(ステップS205、S215-S225及びS110-S135)は、上述した実施例と同じであった。
第2比較例のMEGAを製造した。第2比較例のMEGAの製造方法では、ステップS205及びS210に代えて、アセチレンブラック(HS-100,電気化学工業)と、PTFE粉末(M-111,ダイキン工業)とを、Vブレンダーを用いて30分間混合することにより、カーボンとPTFEとの混合物を得た。混合物において、アセチレンブラックの含有率は60wt%であり、PTFE粉末の含有率は40wt%であった。PTFE粉末の平均粒子径は、およそ30μmであった。なお、他の処理(ステップS215、S220、S225及びS110-S135)は、上述した実施例と同じであった。
第3比較例のMEGAを製造した。まず、ステップS205により得られた混合液を、カーボンペーパーに塗布することにより、ガス拡散層上にMPL層を形成した。なお、混合液の組成は、カーボンペーパーへの塗布に適した組成とした。具体的には、混合液におけるPTFE(固形物)の量が20wt%となるように、PTFEの分散液を添加した。電解質膜の両面に触媒層用インクを塗布して触媒層を形成し、触媒層が形成された電解質膜と、MPL層が形成されたガス拡散層とを接合して、MEGAを製造した。
上述した実施例、第1比較例、第2比較例、第3比較例においてそれぞれ製造されたMEGAを用いて4種の燃料電池を製造し、各燃料電池の発電試験を行い、発電性能を評価した。具体的には、各燃料電池を互いに同じ条件下で動作させ、電流密度が1.0A/cm2である場合の電圧を測定し、かかる電圧に基づき発電性能を評価した。なお、動作時の燃料電池温度を、80℃及び50℃にそれぞれ設定して、各燃料電池の電圧を測定した。80℃は、発電に適した温度を想定している。50℃は、始動時の燃料電池を想定している。下記表1は、評価試験結果を示す。
C1.変形例1:
上記実施形態及び実施例では、一方の極のMPL層と、他方の極のMPL層とを、互いに異なるステップ(ステップS120及びS130)において形成していたが、本発明はこれに限定されるものではない。いずれか一方の極のMPL層を形成する前に、両極の触媒層を形成しておき、その後、両極側にMPLシートを同時に接合して両極のMPL層を同時に形成してもよい。また、上記実施形態及び実施例では、両極のGDL層を同時に形成していたが、これに代えて、それぞれの極のGDL層を互いに異なるタイミング(ステップ)で形成してもよい。
上記実施形態及び実施例では、GDL部材を、2つの裁断機530,535を用いて切断した後にMPL層上に接合していたが、本発明はこれに限定されるものではない。例えば、GDL部材をMPL層上に接合した後に、所定の大きさとなるように、膜電極接合体全体を切断する構成を採用してもよい。
上記実施例及び変形例では、MEGAとして、ガス拡散層を含む接合体を製造したが、これに代えて、ガス拡散層を除く他の層から成る接合体を製造する構成を採用してもよい。この構成では、完成したMEGAとGDL部材とを接合し、さらにセパレーターで挟み込むことにより、燃料電池を構成することができる。
上記実施形態及び実施例では、両極の触媒層を形成する方法として、触媒層用インクを塗布していたが、これに代えて、MPLシートと同様に、予め触媒層シートを作製しておき、かかるシートを電解質膜に接合することにより、両極の触媒層を形成してもよい。
上記実施形態及び実施例では、MPLシートを接合する際に加える圧力(第1の圧力)は、GDL部材を接合する際に加える圧力(第2の圧力)よりも小さかったが、本発明はこれに限定されるものではない。第1の圧力と第2の圧力とを等しい構成又は第1の圧力が第2の圧力よりも大きい構成を採用してもよい。
11…キャリアフィルム
12…電解質膜
13…触媒層
14…MPL層
15…触媒層
20…電解質膜シート
40…電解質膜シート
50…電解質膜シート
60…接合体
100…繰り出しローラー
105…搬送ローラー
110…巻き取りローラー
120…ダイヘッド
130…乾燥機
205…繰り出しローラー
210…繰り出しローラー
215…巻き取りローラー
300…加圧ローラー
305…搬送ローラー
410…剥離用ローラー
415…巻き取りローラー
500…繰り出しローラー
505…繰り出しローラー
510…繰り出しローラー
515…繰り出しローラー
530…裁断機
535…裁断機
545…ホットプレス機
600…第1加圧ローラー
610…第2加圧ローラー
Claims (4)
- 燃料電池においてガス拡散層と触媒層との間に配置される多孔質層を形成するための多孔質層部材の製造方法であって、
(a)カーボンと撥水性樹脂とを含む混合液をスプレードライすることにより、カーボンと撥水性樹脂とを含む粉体を得る工程と、
(b)前記粉体を含むペーストを生成する工程と、
(c)前記ペーストを押出する又は圧延することにより、シート状の前記多孔質層部材を得る工程と、
を備える、製造方法。 - 請求項1に記載の製造方法において、
前記撥水性樹脂は、ポリテトラフルオロエチレンを含む、製造方法。 - 請求項1または請求項2に記載の多孔質層部材を含む膜電極ガス拡散層接合体の製造方法であって、
(d)前記多孔質層部材と、前記触媒層用の部材とを第1の力を加えて接合する工程と、
(e)ガス拡散層用部材と、前記触媒層用の部材が接合された前記多孔質層部材と、を前記第1の力よりも弱い第2の力を加えて接合する工程と、
を備える製造方法。 - 請求項3に記載の製造方法において、さらに、
(f)キャリアフィルムと、前記キャリアフィルム上に配置された電解質膜と、を有する電解質膜シートを用意する工程と、
(g)前記電解質膜シートの前記電解質膜上に、前記触媒層用の部材を配置する工程と、
(h)前記電解質膜シートから前記キャリアフィルムを剥離する工程と、
を備え、
前記工程(g)の後に、前記工程(d)を実行することにより一方の極の前記多孔質層を形成し、その後、前記工程(h)を実行し、さらに、前記工程(d)を実行することにより他方の極の前記多孔質層を形成する、製造方法。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP13854470.5A EP2922125B1 (en) | 2012-11-19 | 2013-09-30 | Production method of porous layer material and production method of membrane electrode and gas diffusion layer assembly including porous layer material |
KR1020157012399A KR101562176B1 (ko) | 2012-11-19 | 2013-09-30 | 다공질층 부재의 제조 방법 및 다공질층 부재를 포함하는 막 전극 가스 확산층 접합체의 제조 방법 |
US14/437,520 US9472810B2 (en) | 2012-11-19 | 2013-09-30 | Production method of porous layer material and production method of membrane electrode and gas diffusion layer assembly including porous layer material |
CN201380056716.7A CN104769760B (zh) | 2012-11-19 | 2013-09-30 | 包含多孔质层部件的膜电极气体扩散层接合体的制造方法 |
CA2891105A CA2891105C (en) | 2012-11-19 | 2013-09-30 | Production method of porous layer material and production method of membrane electrode and gas diffusion layer assembly including porous layer material |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012253172A JP5673655B2 (ja) | 2012-11-19 | 2012-11-19 | 多孔質層部材の製造方法、及び多孔質層部材を含む膜電極ガス拡散層接合体の製造方法 |
JP2012-253172 | 2012-11-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2014076863A1 true WO2014076863A1 (ja) | 2014-05-22 |
Family
ID=50730801
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2013/005799 WO2014076863A1 (ja) | 2012-11-19 | 2013-09-30 | 多孔質層部材の製造方法、及び多孔質層部材を含む膜電極ガス拡散層接合体の製造方法 |
Country Status (7)
Country | Link |
---|---|
US (1) | US9472810B2 (ja) |
EP (1) | EP2922125B1 (ja) |
JP (1) | JP5673655B2 (ja) |
KR (1) | KR101562176B1 (ja) |
CN (1) | CN104769760B (ja) |
CA (1) | CA2891105C (ja) |
WO (1) | WO2014076863A1 (ja) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5862598B2 (ja) | 2013-04-10 | 2016-02-16 | トヨタ自動車株式会社 | 多孔質層およびその製造方法 |
JP6277968B2 (ja) * | 2015-02-17 | 2018-02-14 | トヨタ自動車株式会社 | 接合体の製造方法 |
WO2017130694A1 (ja) * | 2016-01-27 | 2017-08-03 | 東レ株式会社 | ガス拡散電極、微多孔層塗料およびその製造方法 |
KR101905560B1 (ko) | 2016-03-08 | 2018-11-21 | 현대자동차 주식회사 | 연료전지용 막-전극 어셈블리의 제조장치 및 방법 |
JP2020004566A (ja) * | 2018-06-27 | 2020-01-09 | ロベルト・ボッシュ・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツングRobert Bosch Gmbh | 触媒層材料の製造方法、製造装置及び燃料電池の製造方法 |
DE102018215464A1 (de) * | 2018-09-12 | 2020-03-12 | Robert Bosch Gmbh | Verfahren zum Herstellen einer Gasdiffusionslage für eine Brennstoffzelle |
JP6778241B2 (ja) * | 2018-10-26 | 2020-10-28 | 本田技研工業株式会社 | ガス拡散層シートの加工装置 |
JP7255461B2 (ja) * | 2019-11-18 | 2023-04-11 | トヨタ自動車株式会社 | 膜電極ガス拡散層接合体の製造方法 |
WO2023043689A1 (en) * | 2021-09-14 | 2023-03-23 | Hoaco Automation Technology Llc | Method for producing membrane electrode |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006252948A (ja) | 2005-03-10 | 2006-09-21 | Japan Gore Tex Inc | 湿度調整フィルム |
JP2008103164A (ja) * | 2006-10-18 | 2008-05-01 | Nissan Motor Co Ltd | カーボンと撥水材の複合材 |
JP2008243767A (ja) | 2007-03-29 | 2008-10-09 | Aisin Chem Co Ltd | 燃料電池用ガス拡散層及びその製造方法 |
JP2009193777A (ja) * | 2008-02-13 | 2009-08-27 | Toyota Motor Corp | 燃料電池及び燃料電池製造方法 |
JP2012038479A (ja) * | 2010-08-05 | 2012-02-23 | Toyota Motor Corp | 燃料電池用ガス拡散層の作製方法 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61276987A (ja) | 1985-06-03 | 1986-12-06 | Agency Of Ind Science & Technol | ガス及び液透過性電極用材料 |
JP3558134B2 (ja) | 1995-10-06 | 2004-08-25 | ダウ グローバル テクノロジーズ インコーポレーテッド | 燃料電池の膜電極アセンブリ用流れフィールド構造 |
WO2000029643A1 (fr) * | 1998-11-12 | 2000-05-25 | Toagosei Co., Ltd. | Materiau d'electrode de diffusion gazeuse, procede de production de ce materiau et procede de production d'une electrode de diffusion gazeuse |
JP2004055193A (ja) | 2002-07-17 | 2004-02-19 | Mitsubishi Materials Corp | 固体酸化物形燃料電池の電極用材料の製造方法 |
JP2006339018A (ja) * | 2005-06-01 | 2006-12-14 | Univ Of Yamanashi | 燃料電池用ガス拡散層、およびこの製造方法 |
JP4906307B2 (ja) | 2005-10-21 | 2012-03-28 | アイシン化工株式会社 | 燃料電池電極用ガス拡散層の製造方法 |
JP2008143767A (ja) * | 2006-12-08 | 2008-06-26 | Sunagro Co Ltd | 改質硫黄を使用する硫黄被覆肥料およびその製造方法 |
JP2008243445A (ja) * | 2007-03-26 | 2008-10-09 | Toyota Motor Corp | 膜電極接合体(mea)の製造法及び該膜電極接合体(mea)を備えた固体高分子型燃料電池 |
JP2009009768A (ja) * | 2007-06-27 | 2009-01-15 | Toyota Motor Corp | 電解質膜/電極接合体の製造方法及び燃料電池 |
JP4720800B2 (ja) | 2007-07-23 | 2011-07-13 | トヨタ自動車株式会社 | 膜電極接合体製造方法 |
KR20090040124A (ko) * | 2007-10-19 | 2009-04-23 | 삼성에스디아이 주식회사 | 연료전지용 막-전극 어셈블리, 이의 제조방법, 및 이를포함하는 연료전지 시스템 |
CA2760631C (en) | 2009-05-01 | 2015-02-17 | Nissan Motor Co., Ltd. | Gas diffusion layer for fuel cell |
JP5482066B2 (ja) | 2009-09-30 | 2014-04-23 | 大日本印刷株式会社 | 燃料電池用のマイクロポーラス層、マイクロポーラス層付きガス拡散電極、マイクロポーラス層付き触媒層、触媒層付きガス拡散電極及び膜−電極接合体、並びに固体高分子形燃料電池 |
-
2012
- 2012-11-19 JP JP2012253172A patent/JP5673655B2/ja active Active
-
2013
- 2013-09-30 KR KR1020157012399A patent/KR101562176B1/ko active IP Right Grant
- 2013-09-30 US US14/437,520 patent/US9472810B2/en active Active
- 2013-09-30 CN CN201380056716.7A patent/CN104769760B/zh active Active
- 2013-09-30 EP EP13854470.5A patent/EP2922125B1/en active Active
- 2013-09-30 CA CA2891105A patent/CA2891105C/en active Active
- 2013-09-30 WO PCT/JP2013/005799 patent/WO2014076863A1/ja active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006252948A (ja) | 2005-03-10 | 2006-09-21 | Japan Gore Tex Inc | 湿度調整フィルム |
JP2008103164A (ja) * | 2006-10-18 | 2008-05-01 | Nissan Motor Co Ltd | カーボンと撥水材の複合材 |
JP2008243767A (ja) | 2007-03-29 | 2008-10-09 | Aisin Chem Co Ltd | 燃料電池用ガス拡散層及びその製造方法 |
JP2009193777A (ja) * | 2008-02-13 | 2009-08-27 | Toyota Motor Corp | 燃料電池及び燃料電池製造方法 |
JP2012038479A (ja) * | 2010-08-05 | 2012-02-23 | Toyota Motor Corp | 燃料電池用ガス拡散層の作製方法 |
Also Published As
Publication number | Publication date |
---|---|
CN104769760B (zh) | 2016-08-31 |
US20150303486A1 (en) | 2015-10-22 |
US9472810B2 (en) | 2016-10-18 |
JP2014102933A (ja) | 2014-06-05 |
CA2891105A1 (en) | 2014-05-22 |
KR101562176B1 (ko) | 2015-10-20 |
CN104769760A (zh) | 2015-07-08 |
KR20150059806A (ko) | 2015-06-02 |
EP2922125A1 (en) | 2015-09-23 |
CA2891105C (en) | 2015-12-22 |
JP5673655B2 (ja) | 2015-02-18 |
EP2922125B1 (en) | 2016-08-24 |
EP2922125A4 (en) | 2015-12-30 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5673655B2 (ja) | 多孔質層部材の製造方法、及び多孔質層部材を含む膜電極ガス拡散層接合体の製造方法 | |
DE112015001388B4 (de) | Verfahren zur Herstellung einer mit Katalysator beschichteten Membran-Versiegelungs-Anordnung | |
EP2722917B1 (en) | Gas diffusion layer for fuel cell and method for producing same | |
US9034134B2 (en) | Manufacturability of ePTFE laminated membranes | |
JP5259022B1 (ja) | 膜電極接合体およびガス拡散層の製造方法 | |
EP2677579A1 (en) | Membrane-electrode assembly for fuel cell, manufacturing method thereof, and solid polymer fuel cell using membrane-electrode assembly | |
JP2006339018A (ja) | 燃料電池用ガス拡散層、およびこの製造方法 | |
WO2018186293A1 (ja) | ガス拡散電極基材の製造方法、および燃料電池 | |
JP2016106371A (ja) | 混合炭素粒子を含む膜電極接合体 | |
CN113439132A (zh) | 气体扩散层的制备方法以及由或可由该方法获得的气体扩散层 | |
US9444106B2 (en) | Simultaneous coating of fuel cell components | |
US20130216700A1 (en) | Manufacturing method of electrode catalyst layer | |
US10297837B2 (en) | Method of manufacturing electrode catalyst layer for fuel cell, and electrode catalyst layer for fuel cell | |
WO2012133545A1 (ja) | ガス拡散層、燃料電池用電極、膜電極接合体、及び燃料電池 | |
TW202032840A (zh) | 氣體擴散電極、氣體擴散電極的製造方法、膜電極接合體、燃料電池 | |
US10355287B2 (en) | Porous layer and manufacturing method of the same | |
WO2012133544A1 (ja) | ペースト塗布装置 | |
JP2006294267A (ja) | 燃料電池電極形成用触媒インク | |
JP6245350B2 (ja) | ガス拡散多孔層、これを含むガス拡散層、および該ガス拡散多孔層の製造方法ならびに膜電極接合体 | |
WO2021070071A1 (en) | Membrane-electrode assembly (mea) and methods of producing the same | |
JP5928554B2 (ja) | 触媒インクの製造方法 | |
JP2013114769A (ja) | 燃料電池用ガス拡散層の製造方法 | |
JP5426830B2 (ja) | 固体高分子型燃料電池用ガス拡散電極、それを用いた膜−電極接合体およびその製造方法、ならびにそれを用いた固体高分子型燃料電池 | |
JP2009272136A (ja) | 燃料電池用電極の製造方法、燃料電池用膜−電極接合体の製造方法および燃料電池 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 13854470 Country of ref document: EP Kind code of ref document: A1 |
|
REEP | Request for entry into the european phase |
Ref document number: 2013854470 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2013854470 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 14437520 Country of ref document: US |
|
ENP | Entry into the national phase |
Ref document number: 2891105 Country of ref document: CA |
|
ENP | Entry into the national phase |
Ref document number: 20157012399 Country of ref document: KR Kind code of ref document: A |
|
NENP | Non-entry into the national phase |
Ref country code: DE |