WO2007018185A1 - 燃料電池用セパレータ及びその製造方法 - Google Patents
燃料電池用セパレータ及びその製造方法 Download PDFInfo
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- WO2007018185A1 WO2007018185A1 PCT/JP2006/315609 JP2006315609W WO2007018185A1 WO 2007018185 A1 WO2007018185 A1 WO 2007018185A1 JP 2006315609 W JP2006315609 W JP 2006315609W WO 2007018185 A1 WO2007018185 A1 WO 2007018185A1
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- Prior art keywords
- separator
- fuel cell
- cell separator
- treatment
- hydrophilic functional
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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
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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
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0204—Non-porous and characterised by the material
- H01M8/0213—Gas-impermeable carbon-containing materials
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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 separator suitable for a solid polymer type fuel cell and a method for producing the same, and more specifically, improves battery characteristics by controlling the wettability of the fuel cell separator.
- the present invention relates to a fuel cell separator and a manufacturing method thereof. Background art
- Fuel cells are clean and highly anticipated as next-generation energy capable of expressing high power generation efficiency.
- next-generation energy capable of expressing high power generation efficiency.
- solid polymer fuel Batteries are attracting attention.
- This solid polymer fuel cell generally has a solid polymer electrolyte membrane composed of an ion exchange membrane, two electrodes provided on both sides thereof, and a fuel gas such as hydrogen in each electrode.
- This fuel cell is composed of a stack of single cells such as a separator provided with a gas supply groove for supplying an oxidant gas such as oxygen, and two current collector forces provided on the outside thereof. Due to the use of a high performance polymer electrolyte membrane in the electrolyte part, the operating temperature is 80 ⁇ : LOO ° C is low, but high power generation is possible.
- the solid polymer fuel cell separator is required to have a high degree of gas impermeability in order to supply the fuel gas and the acid gas to the electrode in a completely separated state.
- it is necessary to reduce the internal resistance of the battery. For this reason, it is necessary to have high conductivity.
- the heat generated by the battery reaction is efficiently dissipated, and the temperature distribution in the battery is made uniform, and high corrosion resistance, chemical resistance, mechanical properties are ensured to ensure high thermal conductivity and long-term durability. It is necessary to have strength and hydrophilicity.
- the ability to quickly discharge water generated during power generation that is, the hydrophilicity of the separator is one of the most important required characteristics.
- Separator for fuel cell for example, see Patent Document 1
- 2) method for hydrophilizing a separator for fuel cell, characterized by subjecting the separator for fuel cell to atmospheric pressure discharge plasma for example, see Patent Document 2), 3
- Thermosetting resin, average particle size 20-70; formed from a composition containing artificial graphite with ⁇ ⁇ and internal mold release agent, and average surface roughness Ra by surface treatment methods such as shot blasting A fuel cell separator (see, for example, Patent Document 3) characterized in that is 1.0 to 5.0 m is known.
- the concavo-convex portion is formed by sandblasting, atmospheric pressure plasma treatment or shot blasting method described in Patent Documents 1 to 3, the concavo-convex portion is formed on the surface of the gas flow path.
- it is necessary to mask parts other than the uneven part and there are problems that the surface treatment process is complicated and that the uneven part cannot be formed accurately and the yield is low.
- the hydrophilic performance deteriorates with time.
- the carbon particles are subjected to a treatment for imparting a hydrophilic function to the carbon particles, and then subjected to pressure molding or pressure heating molding with a binder. Since the process of forming irregularities on the surface is performed, there is a problem in that the production efficiency is poor and the performance varies.
- the fuel cell separator described in Patent Document 2 various processing gases are indispensable for performing plasma processing, and it is necessary to perform processing in an atmosphere diluted with an inert gas from the viewpoint of safety. There is a restriction that there is.
- the excited gas is blown out and contacted with the fuel cell separator, there is a problem that partial processing into a complicated and fine groove pattern is difficult.
- the fuel cell separator described in Patent Document 3 is formed by molding a composition containing a thermosetting resin, artificial graphite having an average particle size of 20 to 70 / ⁇ ⁇ , and an internal release agent.
- an internal mold release agent causes the problem of bleeding out over time, and the composition that contains a resin release agent, the wettability is insufficient and the wettability decreases over time. There are issues.
- a technique using laser processing for manufacturing a fuel cell for example, a solid polymer electrolyte membrane, a fuel electrode and an air electrode on both sides of the MEA are configured, and both sides of the MEA are sandwiched between separators.
- a battery and a method for producing a fuel cell in which a skin layer having a large amount of resin formed on the surface of the separator is carbonized by laser irradiation are known.
- An electrolyte membrane manufacturing method comprising: (a) a step of forming a base material with a hydrogen permeable metal; and (b) a step of forming a ceramic layer having proton conductivity on the surface of the base material.
- a manufacturing method for example, see Patent Document 5 in which the crystallizing energy required for crystallization of the amorphous material forming the ceramic layer is locally supplied to the amorphous surface by laser irradiation. .
- Patent Document 4 masks the groove part, carbonizes the separator-rich separator surface other than the groove part, reduces the contact electrical resistance, and laser irradiation. It is completely different from the invention of the present application in which the groove portion is not recognized to be hydrophilized, and its purpose and technical idea (configuration and operational effects) are quite different, and the amount of laser irradiation for carbonization is enormous. However, the hydrophilic treatment cannot be performed with this irradiation amount.
- Patent Document 5 is a method for producing an electrolyte membrane for a fuel cell, and there is no recognition that the membrane is made hydrophilic by laser irradiation. Are completely different.
- Patent Document 1 Japanese Patent Laid-Open No. 2001-283873 (Claims, Examples, etc.)
- Patent Document 2 Japanese Patent Laid-Open No. 2002-25570 (Patents, Examples, etc.)
- Patent Document 3 Japanese Patent Laid-Open No. 2005-197222 (Claims, Examples, etc.)
- Patent Document 4 Japanese Patent Laid-Open No. 2004-335121 (Patents, Examples, etc.)
- Patent Document 5 Japanese Patent Laid-Open No. 2005-2005 No. 5088 (Claims, Examples, etc.)
- the present invention intends to solve this problem, and has excellent hydrophilicity over time without performing a special pretreatment, and improves battery characteristics.
- the present invention resides in the following (1) to (8).
- a fuel cell separator formed with a hydrophilic functional group formed on the surface of the separator by laser irradiation treatment, and an average surface roughness.
- a separator for a fuel cell characterized by forming an uneven portion with an Ra of less than 50 m.
- the fuel cell separator is a composite molded body of thermosetting resin or thermoplastic resin and carbon, expanded graphite molded body, glassy carbon molded body, glassy carbon and graphite composite molded body.
- the surface of the fuel cell separator that has been laser-irradiated has a continuous and smooth curvature.
- At least carbon material strength By applying one laser to the surface of the molded fuel cell separator, hydrophilic functional groups are formed on the surface of the separator and the average surface roughness Ra A method for producing a separator for a fuel cell, characterized in that a concavo-convex portion having a thickness of less than 50 ⁇ m is formed.
- the “average surface roughness Ra” defined in the present invention is a value measured by the method defined in JIS B0601-1994.
- the “continuous and smooth curved surface” defined in the present invention means that the material melted and melted by the laser treatment is continuously solidified as it is. A state that spreads smoothly and smoothly. This is clearly observed at an electron microscope magnification of 10,000 times.
- the surface is discontinuous due to surface debris, flashes, or distinct boundaries and defects due to edges of build-up materials such as graphite during the molding or firing process. It has become.
- these discontinuous surface states become more discontinuous due to plasma treatment, acid treatment, and the like.
- a fuel cell separator having improved hydrophilicity and battery characteristics without special pretreatment.
- FIG. 1 shows an example of the present invention, and is a schematic explanatory view showing an example of a state in which laser irradiation treatment is performed on a predetermined surface portion (flow channel surface) of a fuel cell separator. .
- FIG. 2 shows an example of the present invention, wherein a predetermined surface portion (flow channel surface) of a fuel cell separator has an uneven portion having a hydrophilic functional group and an average surface roughness Ra of less than 50 m.
- FIG. 6 is an enlarged schematic cross-sectional view showing a formed state.
- FIG. 3 is an electron micrograph of the separator surface (flow channel surface) after the laser irradiation treatment of the present invention.
- FIG. 4 is an electron micrograph showing an example of a separator surface (channel surface) that becomes a discontinuous treatment surface.
- FIG. 5 is an electron micrograph showing another example of a separator surface (flow channel surface) that becomes a discontinuous treatment surface.
- FIG. 6 is an electron micrograph showing another example of a separator surface (flow channel surface) that becomes a discontinuous treatment surface.
- FIG. 7 is a schematic exploded perspective view showing an example of a fuel cell incorporating the fuel cell separator of the present invention.
- FIG. 8 is a chart showing an example of evaluating hydrophilic functional groups.
- FIG. 9 is a chart showing other examples of evaluating hydrophilic functional groups.
- the separator for a fuel cell of the present invention is a separator for a fuel cell formed from at least a carbon material, and has a hydrophilic functional group formed on the surface portion of the separator by laser irradiation treatment. An uneven portion having an average roughness Ra of less than 50 m was formed.
- a hydrophilic functional group is formed on the surface portion of the separator by performing laser irradiation treatment on the surface portion of the fuel cell separator having at least a carbon material strength.
- an uneven portion having an average surface roughness Ra of less than 50 ⁇ m is formed.
- the present invention includes both the fuel cell separator and the manufacturing method thereof.
- the fuel cell separator before the laser irradiation treatment is at least a fuel cell separator formed from a carbon material, and a preparation method, a molding method, and a shape of a composition containing a carbon material are used.
- the structure and the like are not particularly limited.For example, using at least a carbon material, after forming a groove portion serving as a predetermined flow path surface with a molding die, a fuel cell separator having a predetermined structure is formed by a firing process.
- a separator for a fuel cell in which a groove portion serving as a predetermined flow path surface is formed by a molding die using at least a carbon material and a thermosetting resin or a thermoplastic resin, and at least a thermosetting resin is specified.
- a groove for forming the flow path surface of the fuel cell may be formed by a molding die, and then a fuel cell separator having a predetermined structure may be formed by a firing process.
- Examples of the raw material for the separator to be used include carbon materials, thermosetting resins, thermoplastic resins, and mixed materials thereof, and additives for forming a separator such as a curing accelerator, a plasticizer, and a solvent.
- the carbon material that can be used is not particularly limited.
- glassy carbon isotropic carbon material
- graphite powder highly oriented pyrolytic graphite (HOPG), quiche graphite, natural black lead, And artificial graphite, fullerene, and carbon black
- carbon fiber including vapor-grown carbon fiber, PAN-based carbon fiber, and graphite fiber
- carbon nanotube and expanded graphite sheet.
- binders or thermosetting resins that connect carbon materials include phenol resin, polyimide resin, furan resin, epoxy resin, xylene resin, unsaturated polyester resin, melamine resin, Examples include alkyd resin and copna resin, and those that exhibit intermolecular cross-linking by heating, become three-dimensional and harden, and show a high carbon residue yield without special carbon precursor treatment. Used.
- thermoplastic resin examples include polysalt vinyl bispolyacetate butyl copolymer, polyvinyl chloride, polyacrylonitrile, polyvinyl alcohol, polyamide and the like.
- various raw materials are selected in consideration of gas impermeability, conductivity, thermal conductivity, corrosion resistance, chemical resistance, mechanical strength, etc. required for a fuel cell separator.
- a mixture (composition) having a suitable blending amount.
- carbon materials a mixture such as a binder and a curing accelerator, a mixture such as a carbon material and a thermosetting resin, a mixture such as a carbon material, a thermoplastic resin and a plasticizer, etc. Is mentioned.
- the mixture and the like obtained above are molded, for example, by filling a suitable amount in a mold for forming a groove pattern to be a flow path surface (molding step).
- a mold for forming a groove pattern to be a flow path surface there are no particular limitations on the groove shape (cross-section V shape, concave shape, etc.), depth, width, and pattern thereof of the molding die, and a suitable groove shape, depth, Set to width, groove pattern, etc.
- the mold is heated to 70 to 150 ° C. and solidified (drying process), the obtained resin plate is removed from the mold, and further, in a non-oxidizing atmosphere.
- a separator having a predetermined structure is obtained by performing a heat treatment and firing (firing step).
- firing is carried out in three steps in an inert atmosphere such as nitrogen gas or argon gas, in vacuum, that is, in each of these individual atmospheres or in each atmosphere.
- an inert atmosphere such as nitrogen gas or argon gas
- vacuum that is, in each of these individual atmospheres or in each atmosphere.
- a separator having a predetermined structure is produced by carbonizing the binder or the like. If necessary, after the molding (process) or after firing (process), the groove caps at different locations on the front and back surfaces for positioning outer peripheral processing, hole punching, and final finishing for the laminated stack are used. It is also possible to perform a minimum processing such as ⁇ .
- a separator formed of at least a carbon material as described above for example, a thermosetting resin or a composite formed of a thermoplastic resin and carbon (material), an expanded graphite formed body, a glassy form
- a predetermined surface portion to be hydrophilized for example, a surface portion to be a flow path surface is subjected to a hydrophilic treatment by laser irradiation treatment.
- the surface roughness Ra is less than 50 ⁇ m, and uneven portions are formed.
- a predetermined surface portion of the separator for example, the laser treatment portion at least partially or entirely on the flow path surface, the formation of hydrophilic functional groups and the surface roughness are increased.
- the laser irradiation is not particularly limited as long as it can form a concavo-convex portion with Ra of less than 50 m, and examples thereof include YAG laser, carbon dioxide gas laser, excimer laser, argon laser, ruby laser, and glass laser.
- an oscillation wavelength, a versatile point YAG laser is desired! /.
- a predetermined surface portion of the separator for example, at least part or all of the flow path surface.
- the laser irradiation treatment of the present invention increases the formation of the hydrophilic functional groups as described above on the predetermined surface portion of the separator, and at the same time, the surface roughness Ra is less than 50 m.
- the surface roughness Ra is less than 50 m.
- the uneven portion formed by the laser irradiation treatment of the present invention is a continuous and smooth curved surface having an average surface roughness Ra of less than 50 m.
- the average roughness Ra of this surface is more than 50 ⁇ m, dimensional accuracy is important in the case of small machines such as DMFC, resulting in the disadvantage that the output varies and becomes unstable. The flow resistance of the flowing fuel becomes undesirable. Further, if the surface roughness Ra is less than 0.1 ⁇ m, the target hydrophilicity function may not be exhibited over time because the degree of hydrophilicity is weak.
- the laser irradiation condition is that a predetermined surface portion of the separator, for example, at least part or all of the channel surface, has an increased formation of hydrophilic functional groups and an average surface roughness Ra of 50 m.
- the irradiation dose can form an uneven portion that is less than, when using a force YAG laser or the like that varies depending on the raw material type, size, shape, etc. of the separator, it is not particularly limited.
- the formation of the desired hydrophilic functional group, the unevenness where the average roughness Ra of the surface is less than 50 m, and the above-mentioned condition adjustments can be combined in a continuous manner.
- a smooth curved surface can be formed.
- the output adjustment between 3 and 15W varies depending on the laser specifications, irradiation conditions, etc., but it cannot be said unconditionally. However, if the output is less than 3W, it will be difficult to increase the formation of hydrophilic functional groups. In addition, the time required for the treatment may increase, and the hydrophilic functional group fixing function may not be exhibited over time. On the other hand, if the output exceeds 15 W, the amount of irradiation becomes large and the irradiated part is deeply cut, so that the formation of the target hydrophilic functional group and the uneven part cannot be formed, and the force is also high. In addition, the dimensional accuracy of the separator surface or flow path surface becomes a problem, and the performance of the fuel cell becomes unstable.
- FIG. 1 is a schematic explanatory diagram illustrating an example of a state in which laser irradiation treatment is performed on a predetermined surface portion (flow channel surface) of a fuel cell separator
- FIG. 2 is a diagram illustrating a predetermined surface portion (flow channel surface) of the separator.
- Shows an increase in the formation of hydrophilic functional groups (one OH group, —COOH group,> C 0 group, etc.) and unevenness with an average surface roughness Ra of less than 50 ⁇ m.
- FIG. 3 is an enlarged schematic cross-sectional view
- FIG. 3 is an electron micrograph showing a continuous and smooth curved surface of a portion 12 (flow path surface) in FIG. 2 (manufactured by Hitachi, Ltd., S4700, magnification: 10,000) The same applies to the following).
- FIG. 4 to 6 are electron micrographs showing a discontinuous state in which a continuous and smooth curved surface is not formed due to untreated or acid-soaked treatment, and FIG. 5 is more inferior than FIG. It shows a continuous surface condition.
- a predetermined surface portion (flow channel surface) 11 of a fuel cell separator 10 formed from a carbon material cover is irradiated with a YAG laser device 20 to achieve one.
- it can be formed it is more efficient than conventional sandblasting by masking, atmospheric discharge plasma processing, and shot blasting to form uneven parts, and it is easy to make the required parts to be hydrophilized. It can be processed in a short time. Further, the obtained fuel cell separator has excellent hydrophilicity over time without special pretreatment, and can improve battery characteristics.
- the fuel cell separator of the present invention configured as described above has excellent hydrophilicity over time without performing a special pretreatment, and the flow path resistance is kept low. As a result, it is possible to easily remove the generated water generated by the electrode reaction and suppress variations in fuel cell characteristics.
- a solid polymer fuel cell A shown in FIG. 7 specifically, a solid polymer electrolyte membrane (proton conductive film) 30 and catalyst layers 31 and 32 on both sides thereof are provided.
- the fuel cell separator 10 having an effect is used, a fuel cell having stable power generation efficiency and excellent cell characteristics can be obtained over a long period of time.
- Each fuel cell separator was obtained by the following preparation method and processing method.
- Furan resin (Hitafuran VF-303, manufactured by Hitachi Chemical Co., Ltd.) 90 parts by weight and natural scaly black lead (average particle size 5 ⁇ m, manufactured by Nippon Graphite Industries Co., Ltd.) Add 1.5 parts by weight of toluene sulfonic acid and mix and stir for 2 minutes at 3000 rpm. Pour an appropriate amount of the mixture into a plate mold at an internal size of 59 mm x 59 mm x l. 5 mm, and heat the mold to 100 ° C. After the solidification treatment, the resulting resin plate was removed from the mold force and subjected to heat treatment at 1500 ° C. using a baking furnace to obtain a carbon separator.
- the dimensions of the obtained separator were 47 mm X 47 mm X 1.2 mm (flow path surface width l mm, depth 0.5 mm).
- the separator obtained by this heat treatment method was also used in Example 2 and Comparative Examples 1 to 7 described later.
- Laser treatment is performed on the flow path surface of the separator obtained by the same method as in Example 1 above, using a YAG laser device as a laser irradiation treatment in a room temperature air atmosphere under conditions of 10 W output and continuous scanning.
- the hydrophilic functional group and the concavo-convex part were formed.
- Furan resin (Hitafuran VF-303, manufactured by Hitachi Chemical Co., Ltd.) To 100 parts by weight, add 1.5 parts by weight of p-toluenesulfonic acid as a curing accelerator, stir and mix, and mix the mixture with the prescribed mold metal. After pouring into a mold, this mold was heated to 100 ° C and solidified, and the resulting resin plate was removed from the mold and subjected to heat treatment at 1500 ° C using a firing furnace to obtain a carbon separator. The dimensions of the separator were 47 mm x 47 mm x 1.2 mm (flow path width lmm, depth 0.5mm).
- a mixture of 10 parts by weight of furan resin (Hitafuran VF-303, manufactured by Hitachi Chemical Co., Ltd.) and 40 parts by weight of polyvinyl chloride-loop polyvinyl acetate copolymer (ZEST-C150S, manufactured by Shin-Daiichi PVC Co., Ltd.) Add 50 parts by weight of natural scaly graphite (Nippon Graphite Industries Co., Ltd., average particle size 5 m) to synthetic resin, and then add 20 parts by weight of diallyl phthalate as a plasticizer and mix with a Henschel mixer. The mixture was dispersed and kneaded sufficiently using a mixing two roll to prepare a fuel cell separator composition, which was further pulverized and sieved to obtain a powder.
- the obtained powder is press-molded with a molding die with a predetermined groove pattern, dried and solidified at 300 ° C in an aerobic gas atmosphere, and then heated at 1500 ° C in an inert gas atmosphere.
- a carbon separator was obtained.
- the dimensions of the resulting separator are 47mmX 47mm X 1.2mm (flow path width lmm, depth 0.5 mm).
- phenolic resin P4805N manufactured by Gunei Chemical Co., Ltd.
- natural scaly graphite manufactured by Nippon Graphite Industry Co., Ltd., average particle size: 5 ⁇ m
- the obtained composition was press-molded with a predetermined molding die to obtain a separator of a resin Z graphite composite.
- the dimensions of the obtained separator were 47 mm X 47 mm X 1.2 mm (flow path surface width l mm, depth 0.5 mm).
- oxygen plasma treatment was performed under the conditions of an output of 50 W and an irradiation time of 1 minute.
- Example 5 The separator obtained by the same method as in Example 1 was subjected to sandblasting (a propellant having a particle size of 1 ⁇ m, a shot pressure of 1 kg).
- the separator channel obtained by the same method as in Example 1 above was subjected to laser treatment on the channel surface under the conditions of 200 W output and continuous scanning in a room temperature air atmosphere using a YAG laser device.
- the separator obtained by the same method as in Example 1 was subjected to an oxidation treatment at 500 ° C. for 20 minutes in an air atmosphere without performing laser irradiation treatment.
- hydrophilic functional groups on the separator surface were evaluated with an X-ray photoelectron spectrometer (ESCA-3400) manufactured by Shimadzu Corporation and evaluated according to the following evaluation criteria.
- the average surface roughness (Ram) was evaluated using a Surfcom, an average roughness shape measuring instrument manufactured by Tokyo Seimitsu Co., Ltd., at a driving speed of 0.3 mmZ.
- a contact angle meter CA-X manufactured by Kyowa Interface Chemical Co., Ltd. was used as a method for evaluating the contact angle after the treatment. The lower the value, the better the degree of hydrophilicity.
- the separator for a fuel cell is a separator for a fuel cell of Comparative Example 1 that falls outside the scope of the present invention, Comparative Examples 2 and 3 for oxygen plasma treatment, Comparative Example 4 for untreated, Comparative Example 5 for sandblast treatment, and Comparative Example 7 Excellent hydrophilization and stable over time compared to oxidation treatment It was found to have a degree of hydrophilization.
- Comparative Example 6 the dimensional accuracy was poor and the digging was too deep, the surface roughness was too large, and some parts were cut. This proved to be unsuitable for processing small fuel cell separators.
- a fuel cell separator suitable for a solid polymer type fuel cell and a method for producing the same can be obtained.
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Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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DE112006002064T DE112006002064B4 (de) | 2005-08-05 | 2006-08-07 | Separatorplatte für eine Brennstoffzelle und Verfahren zu deren Herstellung |
JP2007529577A JP4148984B2 (ja) | 2005-08-05 | 2006-08-07 | 燃料電池用セパレータ及びその製造方法 |
US11/989,958 US7740971B2 (en) | 2005-08-05 | 2006-08-07 | Separator for fuel cell and production process for the same |
CA2618287A CA2618287C (en) | 2005-08-05 | 2006-08-07 | Separator for fuel cell and production process for the same |
CN2006800283930A CN101233640B (zh) | 2005-08-05 | 2006-08-07 | 燃料电池用隔板及其制造方法 |
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JP2005227822 | 2005-08-05 | ||
JP2005-227822 | 2005-08-05 |
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WO2007018185A1 true WO2007018185A1 (ja) | 2007-02-15 |
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PCT/JP2006/315609 WO2007018185A1 (ja) | 2005-08-05 | 2006-08-07 | 燃料電池用セパレータ及びその製造方法 |
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US (1) | US7740971B2 (ja) |
JP (1) | JP4148984B2 (ja) |
KR (1) | KR100892187B1 (ja) |
CN (1) | CN101233640B (ja) |
CA (1) | CA2618287C (ja) |
DE (1) | DE112006002064B4 (ja) |
TW (1) | TW200721583A (ja) |
WO (1) | WO2007018185A1 (ja) |
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US8221938B2 (en) * | 2008-08-08 | 2012-07-17 | GM Global Technology Operations LLC | Method of making a stable hydrophilic coating/surface on carbon-based materials for fuel cell applications |
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Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003223904A (ja) * | 2001-02-22 | 2003-08-08 | Jfe Steel Kk | 燃料電池用セパレータとその製造方法および固体高分子型燃料電池 |
JP2004335121A (ja) * | 2003-04-30 | 2004-11-25 | Matsushita Electric Ind Co Ltd | 燃料電池とその製造方法 |
JP2005197222A (ja) * | 2003-12-12 | 2005-07-21 | Nisshinbo Ind Inc | 燃料電池セパレータ |
JP2006019252A (ja) * | 2004-05-31 | 2006-01-19 | Matsushita Electric Ind Co Ltd | 高分子電解質形燃料電池用セパレータ、高分子電解質形燃料電池、高分子電解質形燃料電池用セパレータの評価方法、及び、高分子電解質形燃料電池用セパレータの製造方法 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0881754A (ja) * | 1994-09-12 | 1996-03-26 | Nissin Electric Co Ltd | 窒化クロム膜被覆部材及びその製造方法 |
KR100295611B1 (ko) | 1996-07-10 | 2001-10-24 | 이구택 | 각종금속류표면의경질피막형성방법 |
EP0975040A1 (en) * | 1998-02-06 | 2000-01-26 | Nisshinbo Industries, Inc. | Separator for fuel cells and method of manufacturing the same |
JP3580218B2 (ja) | 2000-03-31 | 2004-10-20 | 松下電器産業株式会社 | 高分子電解質型燃料電池用セパレータとこれを用いた高分子電解質型燃料電池 |
JP2002025570A (ja) | 2000-07-04 | 2002-01-25 | Sekisui Chem Co Ltd | 燃料電池用セパレータの処理方法及び燃料電池 |
CA2372326C (en) | 2001-02-22 | 2007-09-11 | Kawasaki Steel Corporation | Stainless steel separator for fuel cells, method for making the same, and solid polymer fuel cell including the same |
JP3773170B2 (ja) | 2001-07-11 | 2006-05-10 | 株式会社藤商事 | スロットマシン |
KR20030030269A (ko) * | 2001-10-09 | 2003-04-18 | (주)세티 | 수지함침에 의하여 강화된 팽창 그라파이트 시이트로제조된 연료전지용 바이폴라 플레이트 |
JP2005005088A (ja) | 2003-06-11 | 2005-01-06 | Toyota Motor Corp | 燃料電池用電解質膜の製造方法 |
US20050037253A1 (en) * | 2003-08-13 | 2005-02-17 | Amir Faghri | Integrated bipolar plate heat pipe for fuel cell stacks |
JP4143023B2 (ja) * | 2003-11-21 | 2008-09-03 | 株式会社東芝 | パターン形成方法および半導体装置の製造方法 |
KR100759654B1 (ko) | 2004-05-31 | 2007-09-17 | 마츠시타 덴끼 산교 가부시키가이샤 | 고분자 전해질형 연료 전지용 세퍼레이터, 고분자 전해질형연료 전지, 고분자 전해질형 연료 전지용 세퍼레이터의평가방법 및 고분자 전해질형 연료 전지용 세퍼레이터의제조방법 |
JP4934951B2 (ja) | 2004-08-25 | 2012-05-23 | パナソニック株式会社 | 燃料電池用セパレータ及びその製造方法及びそれを用いた固体高分子型燃料電池 |
-
2006
- 2006-08-04 TW TW095128713A patent/TW200721583A/zh not_active IP Right Cessation
- 2006-08-07 CA CA2618287A patent/CA2618287C/en not_active Expired - Fee Related
- 2006-08-07 US US11/989,958 patent/US7740971B2/en not_active Expired - Fee Related
- 2006-08-07 KR KR1020087001984A patent/KR100892187B1/ko not_active IP Right Cessation
- 2006-08-07 DE DE112006002064T patent/DE112006002064B4/de not_active Expired - Fee Related
- 2006-08-07 JP JP2007529577A patent/JP4148984B2/ja not_active Expired - Fee Related
- 2006-08-07 WO PCT/JP2006/315609 patent/WO2007018185A1/ja active Application Filing
- 2006-08-07 CN CN2006800283930A patent/CN101233640B/zh not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003223904A (ja) * | 2001-02-22 | 2003-08-08 | Jfe Steel Kk | 燃料電池用セパレータとその製造方法および固体高分子型燃料電池 |
JP2004335121A (ja) * | 2003-04-30 | 2004-11-25 | Matsushita Electric Ind Co Ltd | 燃料電池とその製造方法 |
JP2005197222A (ja) * | 2003-12-12 | 2005-07-21 | Nisshinbo Ind Inc | 燃料電池セパレータ |
JP2006019252A (ja) * | 2004-05-31 | 2006-01-19 | Matsushita Electric Ind Co Ltd | 高分子電解質形燃料電池用セパレータ、高分子電解質形燃料電池、高分子電解質形燃料電池用セパレータの評価方法、及び、高分子電解質形燃料電池用セパレータの製造方法 |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8105721B2 (en) | 2007-04-04 | 2012-01-31 | GM Global Technology Operations LLC | Microtextured fuel cell elements for improved water management |
JP2009087732A (ja) * | 2007-09-28 | 2009-04-23 | Sanyo Electric Co Ltd | 燃料電池用セパレータおよび燃料電池 |
WO2009113717A1 (ja) * | 2008-03-14 | 2009-09-17 | 昭和電工株式会社 | 燃料電池用セパレータおよびその製造方法 |
JP2013179098A (ja) * | 2008-03-14 | 2013-09-09 | Showa Denko Kk | 燃料電池用セパレータおよびその製造方法 |
WO2012032922A1 (ja) * | 2010-09-10 | 2012-03-15 | 日清紡ケミカル株式会社 | 燃料電池セパレータ |
JP5954177B2 (ja) * | 2010-09-10 | 2016-07-20 | 日清紡ケミカル株式会社 | 燃料電池セパレータ |
JP2014154475A (ja) * | 2013-02-13 | 2014-08-25 | Panasonic Corp | 燃料電池セパレータ及びその製造方法 |
WO2014129224A1 (ja) * | 2013-02-25 | 2014-08-28 | 日清紡ケミカル株式会社 | 燃料電池セパレータ |
JP2014164996A (ja) * | 2013-02-25 | 2014-09-08 | Nisshinbo Chemical Inc | 燃料電池セパレータ |
US9768452B2 (en) | 2013-02-25 | 2017-09-19 | Nisshinbo Chemical Inc. | Fuel cell separator |
JP2015222729A (ja) * | 2015-08-03 | 2015-12-10 | パナソニックIpマネジメント株式会社 | 燃料電池セパレータ |
Also Published As
Publication number | Publication date |
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DE112006002064B4 (de) | 2013-09-05 |
CA2618287A1 (en) | 2007-02-15 |
DE112006002064T5 (de) | 2008-07-03 |
US20100099000A1 (en) | 2010-04-22 |
US7740971B2 (en) | 2010-06-22 |
KR100892187B1 (ko) | 2009-04-07 |
CN101233640A (zh) | 2008-07-30 |
CN101233640B (zh) | 2010-11-24 |
CA2618287C (en) | 2011-11-22 |
JP4148984B2 (ja) | 2008-09-10 |
JPWO2007018185A1 (ja) | 2009-02-19 |
KR20080033294A (ko) | 2008-04-16 |
TWI373876B (ja) | 2012-10-01 |
TW200721583A (en) | 2007-06-01 |
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