WO2004073097A1 - 燃料電池用セパレータの製造方法 - Google Patents
燃料電池用セパレータの製造方法 Download PDFInfo
- Publication number
- WO2004073097A1 WO2004073097A1 PCT/JP2003/001472 JP0301472W WO2004073097A1 WO 2004073097 A1 WO2004073097 A1 WO 2004073097A1 JP 0301472 W JP0301472 W JP 0301472W WO 2004073097 A1 WO2004073097 A1 WO 2004073097A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fuel cell
- raw material
- separator
- material powder
- mold
- Prior art date
Links
Classifications
-
- 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
- H01M8/0223—Composites
- H01M8/0226—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
- H01M8/0204—Non-porous and characterised by the material
- H01M8/0213—Gas-impermeable carbon-containing materials
-
- 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
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0258—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant
- H01M8/0263—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant having meandering or serpentine paths
-
- 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
Definitions
- the present invention relates to a method for producing a fuel cell separator used in a polymer electrolyte fuel cell, and more particularly to a method for producing a fuel cell separator using a mixture of carbon powder and a thermosetting resin as raw material powder.
- a fuel cell is a device that converts chemical energy directly into electrical energy by reacting hydrogen and oxygen via an electrolyte, and there are several types depending on the electrolyte used.
- Solid polymer fuel cells using membranes can operate at a low temperature of about 80 ° C., and are thus attracting attention as power generators for electric vehicles.
- FIG. 4 is an exploded view showing the configuration of a unit cell constituting the fuel cell
- FIG. 5 is a view showing the configuration of the fuel cell separator shown in FIG. 4
- (a) is a plan view
- (B) is an X-Y sectional view shown in (a).
- the solid polymer electrolyte fuel cell comprises a solid polymer electrolyte membrane 2 and an anode (fuel electrode) by two fuel cell separators 1 having a plurality of grooves on the left and right sides.
- MEA membrane electrode assembly: membrane Z electrode assembly
- MEA membrane Z electrode assembly
- the fuel cell separator 1 has a plurality of gas supply and discharge grooves 11 on one side or both sides of a thin plate, and a gas supply and discharge groove 1 as shown in FIGS.
- the fuel cell has an opening 12 for supplying a fuel gas or an oxidizing gas to 1 and a fixed hole 13 for arranging MEAs in parallel, so that the fuel gas flowing in the fuel cell and the oxidizing gas are not mixed.
- it plays an important role in transmitting the electric energy generated by the MEA to the outside and dissipating the heat generated by the MEA to the outside.
- the characteristics required for the fuel cell separator 1 include sufficient strength against bolt tightening at the time of assembly and vibration of an automobile or the like, and reduction of electrical resistance to reduce power generation loss, Gas impermeability is required to separate the fuel gas and the oxidizing gas completely on both sides and supply them to the electrode.
- a carbon composite material using a thermosetting resin such as phenol resin which is advantageous in terms of productivity and cost, as a binder has been proposed (eg 5 9-2 6 0 7)
- the method of production is that a carbon powder and a thermosetting resin are mixed and put into a mold, and a compressive force is applied to the mold while heating to cure the resin. Production methods are used.
- thermosetting resins phenol resin is a resin with a high curing speed, but it takes several minutes at a temperature of 160 ° C., and heat is transferred to the raw material powder to Depending on the size of the raw material powder, several minutes may be required to increase the temperature, and the production speed of the expensive press may be reduced.
- the present invention has been made in view of such problems, and the object of the present invention is to use a pressing device for a raw material powder comprising carbon powder and a thermosetting resin, and a thermosetting resin obtained by heating and heating.
- the present invention has the following constitution in order to solve the above-mentioned problems.
- the gist of the invention according to claim 1 is a method for producing a separator for a fuel cell using a mixture of carbon powder and a thermosetting resin in a predetermined ratio as a raw material powder, A compression molding step of charging in a mold and performing cold compression molding; and the raw material powder compression-molded by the compression molding step in a pressureless state above the resin curing temperature of the thermosetting resin.
- a method of manufacturing a fuel cell separator comprising: a resin curing step of heating to a temperature.
- the subject matter of the invention described in claim 2 is the fuel cell according to claim 1, characterized in that, in the compression molding step, a pressure of 10 OMP a or more is applied to the raw material powder. It exists in the manufacturing method of the separator.
- the subject matter of the invention according to claim 3 is characterized in that: the phenolic resin is used as the thermosetting resin, and the carbon powder is coated with the phenolic resin.
- the subject matter of the invention described in claim 4 is the fuel cell separator manufactured by the method for manufacturing a fuel cell separator according to any one of claims 1 to 3. It exists.
- the subject matter of the invention according to claim 5 is a fuel cell in which a plurality of unit cells in which an anode and a cathode are joined by a pair of separators through a solid polymer electrolyte membrane are arranged in parallel.
- a fuel cell according to claim 4 wherein the fuel cell separator according to claim 4 is used for part or all of the separator.
- FIG. 1 is a schematic view showing the configuration of a press used in the compression molding step of the method for producing a fuel cell separator according to the present invention.
- FIG. 2 is a schematic view showing the configuration of a heating device used in the resin curing step of the method for producing a fuel cell separator according to the present invention.
- FIG. 3 is a table showing raw material powder used in the examples and comparative examples of the method of manufacturing a fuel cell separator according to the present invention, a process, and a result of determination of appropriateness.
- FIG. 4 is an exploded view showing the configuration of a unit cell constituting a fuel cell.
- FIG. 5 is a view showing the configuration of the fuel cell separator shown in FIG. 4, (a) is a plan view, and (b) is an XY cross-sectional view shown in (a).
- FIG. 1 is a schematic view showing the structure of a press used in the compression molding step of the method for producing a fuel cell separator according to the present invention
- FIG. 2 is a method for producing a fuel cell separator according to the present invention
- FIG. 6 is a schematic view showing the configuration of a heating device used in the resin curing step of FIG.
- a mixture of carbon powder and a thermosetting resin is used as raw material powder.
- the raw material powder placed in the mold is pressed by a pressing device to compression mold the separator-shaped molded plate, and the molded plate produced by the compression molding process is heated by a furnace (oven) etc.
- a fuel cell separator 1 is manufactured by a resin curing step of heating with an apparatus to cure a thermosetting resin.
- a carbon powder and a thermosetting resin are mixed at a predetermined weight ratio, and they are sufficiently stirred to mix raw material powders.
- the mixing weight ratio of the raw material powder is preferably 90% to 60% of carbon powder and 10% to 40 ° / 0 of thermosetting resin.
- a fiber base, a filler, a mold release agent, a hydrolysis resistant agent and the like may be added to the raw material powder.
- Graphite powder (carbon powder) or the like can be used as the carbon powder, and in the case of using graphite powder, the average particle diameter is 10 x mm: L 0 0 / m, the aspect ratio is It is preferable to use 2 or less.
- thermosetting resins phenolic resins represented by resol-type phenolic resin and nopolac-type phenolic resin are good as moldability, and further, when a material coated with carbon powder is used, phenolic resin has high strength. Is also high and suitable.
- the raw material powder is uniformly stuck in the mold (female mold), and the mold (female mold) is transferred to the mold (male mold) by the hydraulic cylinder.
- a pressure of 10 OMP a or more is applied to the raw material powder by the mold (female mold) and the mold (male mold), and the separator-shaped molded plate is compression molded.
- the groove for gas supply and discharge 1 1 is inverted and formed on the molding plate by giving a predetermined groove shape to the pressing surface of the mold (female mold) and the mold (male mold).
- the compression molding process is cold compression molding performed at room temperature without heating. Since it is not necessary to heat the raw material powder, the molding time can be shortened, and one separator-shaped molded plate can be compression molded in 5 to 10 seconds. In addition, since the resin does not cure, adhesion between the mold and the product does not occur, and the mold releasability is excellent.
- the separator 1 can be manufactured.
- the molding plate taken out of the mold is carried into the heating device as shown in FIG. 1, and the pressure is higher than the resin curing temperature of the thermosetting resin in a non-pressurized state C. to 200.degree. C., and the thermosetting resin is cured to produce the fuel cell separator 1.
- the resin curing step many molding plates may be carried into a batch type furnace and heated, or the molding plates may be placed on the belt conveyor and heated by a continuous furnace. In either method, heating takes time, but with this method it is possible to process many quantities, and the total production time will be less.
- the compression molding process by the pressing device for the raw material powder consisting of the carbon powder and the thermosetting resin is separated from the resin curing process of the thermosetting resin by heating.
- a compression molding process by a pressing device for raw material powder comprising carbon powder and a thermosetting resin and a thermosetting resin by heating By separating it from the resin curing process of fat, it is possible to simultaneously cure and heat-cure a plurality of molded plates compression-molded in the compression molding process in a furnace such as a continuous furnace, so that a large production time is required. In addition to shortening the production cost, the manufacturing cost can be reduced, and the mass productivity can be dramatically improved.
- FIG. 3 is a table showing raw material powder used in the examples and comparative examples of the method for manufacturing a fuel cell separator according to the present invention, processes, and determination results of suitability.
- the density, the electrical resistance, the air tightness and the bending strength were measured and compared for each example and each comparative example, but the methods for measuring the density, the electrical resistance, the air tightness and the bending strength are as follows.
- Density Bulk density was calculated from the value of weight divided by volume.
- Measurement was performed by a four-terminal method using a molded sample with a length of 200 mm and a cross section of 1 mm square.
- Airtightness Performed according to Method A (differential pressure method) of J I S K 7 126 and sample humidity control: 23 C, 50% R H * 4 8 H r or more, Measurement temperature: 23 ° C., Gas used: Hydrogen gas,
- Bending strength Performed according to A S T M D 7 7 0 0, and the length of the molded sample
- the measurement was carried out by bending 60 mm, ⁇ 20 mm and thickness 3 mm, and using a ⁇ ⁇ ⁇ bend of 50 mm.
- a black lead powder having an average particle diameter of 20 ⁇ m and an anode ratio of particles of 1.5 is used, and a powder phenol resin is used as a thermosetting resin, and the mixing weight ratio is carbon Mix thoroughly at a rate of 85% powder and 15% resin.
- the mixed powder of 600 g is uniformly charged into a female mold having a volume of 300 x 200 x 20 mm, and pressed with a pressure of 20 OMP a in a male mold and compacted. Molded samples were made.
- the pressing speed was 5 mm / sec, and the temperature of the mold and raw material powder at the time of pressing was 25 ° C., with room temperature.
- the compacted molded sample was taken out of the mold and its density was measured.
- the density was 1.90 gZ cc.
- the molded sample taken out of the mold was carried into a heating apparatus and heated to 200 ° C. to cure the resin. The temperature was raised from room temperature to 200 ° C. for 3 hours.
- the density was slightly reduced to 1.87 g / cc, but no abnormality such as warping, deformation, or swelling was observed.
- the value was suitable for separator 1.
- Example 2 The same carbon powder and thermosetting resin as used in Example 1 were used, respectively, and the mixture was sufficiently mixed at a ratio of 75% carbon powder and 5% resin to obtain a raw material powder.
- 600 g of the mixed powder is uniformly introduced into a female mold having a volume of 300 x 200 x 20 mm, and molded by pressing with a male mold under a pressure of 10 OMP a. I made a sample.
- the pressing speed was 5 mm / sec, and the temperature of the mold and raw material powder at the time of pressing was 25 ° C. with room temperature.
- the compacted molded sample was taken out of the mold and its density was measured. The density was 1.85 g / cc.
- the molded sample taken out of the mold was carried into a heating apparatus and heated to 200 ° C. to cure the resin.
- the temperature was raised from room temperature to 200 ° C. for 3 hours.
- the density remained at 1.8 g CC , and no abnormalities such as warpage, deformation, and swelling were observed.
- the carbon powder of Example 1 coated with phenolic resin (weight ratio: 85% carbon, 15% resin) was used.
- the mixed powder 600 g was uniformly introduced into a female mold having a volume of 300 x 200 x 20 mm, and a male mold was applied with a pressure of 15 OMP a. Molded samples were prepared by compacting. The pressing speed was 5 mm / sec, and the temperature of the mold and raw material powder at the time of pressing was 25 ° C., with room temperature. The compacted molded sample was taken out of the mold and its density was measured. The density was 1.92 gZcc.
- the molded sample taken out of the mold was carried into a heating apparatus and heated to 200 ° C. to cure the resin.
- the temperature was raised from room temperature to 200 ° C. for 3 hours.
- the density was slightly swollen to 1. 90 g / cc, but no abnormality such as warpage, deformation, or swelling was observed.
- the electric resistance was 7 mQ cm
- the airtightness was 1.2 ⁇ 10 to 6 cm 3 / cm 2 -s
- the bending strength was 7 OMP a. Both performances are separators for fuel cell 1 It was a suitable value as
- Molded samples were produced using the same raw material powder and process as Example 1 except that the compression force in the mold was performed at 5 OMP a. The compacted molded sample was removed from the mold and its density was measured. It was 0 g / cc.
- the molded sample taken out of the mold was carried into a heating apparatus and heated to 200 ° C. to cure the resin.
- the temperature was raised from room temperature to 200 ° C. for 3 hours.
- the density remained at 1.70 g / cc, and no abnormality such as warpage, deformation, or swelling was observed.
- electrical resistivity 2 0 ⁇ cm
- airtightness 3. 0 X 1 0 4 cm 3 / cm 2 - s
- were bending strength 5 OMP a. Airtightness deteriorated by two orders of magnitude, making it unsuitable for use as a fuel cell separator 1.
- Molded samples were produced using the same raw material powder and process as in Example 2 except that the compression force in the mold was performed at 75 MP a. The compacted molded sample was removed from the mold and its density was measured to be 1.75 gZ c c.
- Molded samples were produced using the same raw material powder and process as in Example 3, except that the compression force in the mold was performed at 2 O MP a.
- the compacted molded sample was removed from the mold and its density was measured. It was 5 g / cc.
- the compacted molded sample was taken out of the mold and its density was measured. The density was 1.72 gZ cc.
- the molded sample taken out of the mold was carried into a heating apparatus and heated to 200 ° C. to cure the resin.
- the temperature was raised from room temperature to 200 ° C. for 3 hours.
- the density was slightly swollen to 1.6 g / cc, but no abnormality such as warpage, deformation, or swelling was observed.
- the electrical resistance 25 m ⁇ cm
- airtightness 8.0 x 1 0 3 cm 3 / cm 2 ⁇ s
- bending strength was 2 8 MP a
- the airtightness was poor. Therefore, it was inappropriate to use it as a fuel cell separator 1.
- the method for producing a fuel cell separator according to the present invention comprises the steps of: compressing and molding carbon powder, thermosetting resin powder, and raw material powder with a pressing device using a pressing device. Separate from the resin curing process of the thermosetting resin, and in the compression molding process, since it is not necessary to heat the raw material powder, the molding time can be shortened, and the shape of one separator can be taken in 5 to 10 seconds. Since the molding plate can be compression-molded, the production speed of the expensive press can be increased.
- a compression molding process by a pressing device for raw material powder consisting of carbon powder and a thermosetting resin and a resin curing process of the thermosetting resin by heating are separated. Since a plurality of molded plates compression-molded by the compression molding process can be simultaneously heat-cured slowly in a furnace such as a continuous furnace, the manufacturing time can be greatly shortened and the manufacturing cost can be reduced. This has the effect of being able to dramatically improve mass productivity.
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Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03705097A EP1596452A4 (en) | 2003-02-13 | 2003-02-13 | MANUFACTURING METHOD FOR A FUEL CELL PARAMETER |
US10/545,516 US20060234108A1 (en) | 2003-02-13 | 2003-02-13 | Method for producing separator of fuel cell |
AU2003211945A AU2003211945A1 (en) | 2003-02-13 | 2003-02-13 | Method for producing separator of fuel cell |
JP2004568178A JP3715642B2 (ja) | 2003-02-13 | 2003-02-13 | 燃料電池用セパレータの製造方法 |
CN038259745A CN1742399B (zh) | 2003-02-13 | 2003-02-13 | 燃料电池用隔板的制造方法 |
PCT/JP2003/001472 WO2004073097A1 (ja) | 2003-02-13 | 2003-02-13 | 燃料電池用セパレータの製造方法 |
HK06106223.0A HK1086390A1 (en) | 2003-02-13 | 2006-05-29 | Method for producing separator of fuel cell |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2003/001472 WO2004073097A1 (ja) | 2003-02-13 | 2003-02-13 | 燃料電池用セパレータの製造方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004073097A1 true WO2004073097A1 (ja) | 2004-08-26 |
Family
ID=32866108
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2003/001472 WO2004073097A1 (ja) | 2003-02-13 | 2003-02-13 | 燃料電池用セパレータの製造方法 |
Country Status (7)
Country | Link |
---|---|
US (1) | US20060234108A1 (ja) |
EP (1) | EP1596452A4 (ja) |
JP (1) | JP3715642B2 (ja) |
CN (1) | CN1742399B (ja) |
AU (1) | AU2003211945A1 (ja) |
HK (1) | HK1086390A1 (ja) |
WO (1) | WO2004073097A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007122899A (ja) * | 2005-10-25 | 2007-05-17 | Kyocera Chemical Corp | 冷間プレス法による燃料電池用導電性セパレータの製造方法 |
JP2013093099A (ja) * | 2011-10-24 | 2013-05-16 | Panasonic Corp | 燃料電池セパレータ成形材料、燃料電池セパレータ、及び燃料電池 |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4015179B1 (ja) * | 2006-07-31 | 2007-11-28 | 株式会社精工技研 | 燃料電池セパレータの製造方法 |
JP5643328B2 (ja) | 2009-11-23 | 2014-12-17 | ユナイテッド テクノロジーズ コーポレイションUnited Technologies Corporation | 多孔質物品の製造方法 |
EP2982647B1 (en) | 2013-03-22 | 2018-09-26 | Nippon Steel & Sumikin Materials Co., Ltd. | Carbon plate, and composite carbon plate |
CN109638301B (zh) * | 2019-01-23 | 2024-03-29 | 北京氢璞创能科技有限公司 | 一种燃料电池板模压制造设备 |
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JP2000077079A (ja) * | 1998-08-31 | 2000-03-14 | Nippon Pillar Packing Co Ltd | 燃料電池用セパレータ及びその製造方法 |
JP2000173630A (ja) * | 1998-12-02 | 2000-06-23 | Tokai Carbon Co Ltd | 固体高分子型燃料電池用セパレータ部材の製造方法 |
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JP2003217609A (ja) * | 2002-01-21 | 2003-07-31 | Dainatsukusu:Kk | 固体高分子型燃料電池用セパレータの製造方法 |
-
2003
- 2003-02-13 AU AU2003211945A patent/AU2003211945A1/en not_active Abandoned
- 2003-02-13 WO PCT/JP2003/001472 patent/WO2004073097A1/ja active Application Filing
- 2003-02-13 US US10/545,516 patent/US20060234108A1/en not_active Abandoned
- 2003-02-13 EP EP03705097A patent/EP1596452A4/en not_active Withdrawn
- 2003-02-13 JP JP2004568178A patent/JP3715642B2/ja not_active Expired - Fee Related
- 2003-02-13 CN CN038259745A patent/CN1742399B/zh not_active Expired - Fee Related
-
2006
- 2006-05-29 HK HK06106223.0A patent/HK1086390A1/xx not_active IP Right Cessation
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JP2000077079A (ja) * | 1998-08-31 | 2000-03-14 | Nippon Pillar Packing Co Ltd | 燃料電池用セパレータ及びその製造方法 |
JP2000173630A (ja) * | 1998-12-02 | 2000-06-23 | Tokai Carbon Co Ltd | 固体高分子型燃料電池用セパレータ部材の製造方法 |
JP2002008675A (ja) * | 2000-06-19 | 2002-01-11 | Nippon Pillar Packing Co Ltd | 燃料電池用セパレータ及びその製造方法 |
JP2002289214A (ja) * | 2001-03-27 | 2002-10-04 | Nichias Corp | 燃料電池用セパレータ |
JP2002367620A (ja) * | 2001-04-03 | 2002-12-20 | Mitsubishi Chemicals Corp | 燃料電池用セパレータの製造方法 |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007122899A (ja) * | 2005-10-25 | 2007-05-17 | Kyocera Chemical Corp | 冷間プレス法による燃料電池用導電性セパレータの製造方法 |
JP2013093099A (ja) * | 2011-10-24 | 2013-05-16 | Panasonic Corp | 燃料電池セパレータ成形材料、燃料電池セパレータ、及び燃料電池 |
Also Published As
Publication number | Publication date |
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US20060234108A1 (en) | 2006-10-19 |
JPWO2004073097A1 (ja) | 2006-06-01 |
JP3715642B2 (ja) | 2005-11-09 |
EP1596452A4 (en) | 2009-02-11 |
CN1742399B (zh) | 2012-07-18 |
HK1086390A1 (en) | 2006-09-15 |
CN1742399A (zh) | 2006-03-01 |
AU2003211945A1 (en) | 2004-09-06 |
EP1596452A1 (en) | 2005-11-16 |
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