WO2006059402A1 - 金属ガラスセパレータの製造方法 - Google Patents
金属ガラスセパレータの製造方法 Download PDFInfo
- Publication number
- WO2006059402A1 WO2006059402A1 PCT/JP2004/018516 JP2004018516W WO2006059402A1 WO 2006059402 A1 WO2006059402 A1 WO 2006059402A1 JP 2004018516 W JP2004018516 W JP 2004018516W WO 2006059402 A1 WO2006059402 A1 WO 2006059402A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- separator
- metal
- metal glass
- glass sheet
- sheet
- 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
- H01M8/023—Porous and characterised by the material
- H01M8/0236—Glass; Ceramics; Cermets
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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
- H01M8/0258—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
-
- 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
-
- 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 belongs to the technical field of a manufacturing method for a separate separator incorporated in a polymer electrolyte fuel cell. Background art
- a polymer electrolyte fuel cell (hereinafter referred to as “fuel cell”) is a device that generates electricity by supplying a reactive gas (hydrogen / oxygen) to an electrode made of a polymer electrolyte membrane.
- FIG. 2 is a perspective view of cell C, which is the smallest unit constituting the fuel cell.
- the cell C of the fuel cell has two electrodes E 1 and E 2 (anode and force sword) composed of a catalyst layer and a porous support layer, an electrolyte D inserted between the electrodes E 1 and E 2, and an electrode E. 1, consisting of a separate evening 100 located outside E 2.
- an actual fuel cell is typically a stack of tens to hundreds of cells C stacked in series.
- FIG. 3 is a front view of a conventional separator 100 used in a fuel cell.
- a large number of grooves 1 2 0 having a width and a depth of about 0.5 to 2 mm are provided on both surfaces of the plate-shaped separator 100. 0 functions as a reaction gas flow path and a discharge path of water generated by the reaction.
- the above-described separator 100 is not only a partition plate between the cells C, but also an adjacent electrode E 1 (or It is provided to supply reactive gas to E 2) and to discharge water generated by the reaction to the outside.
- Separator evening 100 also plays a role in transmitting electricity generated in cell C to the outside.
- the fuel cell separator 100 has a high gas shielding property so that the reaction gas supplied to the electrodes E 1 and E 2 (anode side, power sword side) is not mixed, It has excellent corrosion resistance and oxidation resistance so as not to be corroded by gas, is lightweight, has conductivity, and has the strength to withstand the load of each stacked cell C. Required.
- isotropic carbon has been used as a material for a separator 100 that satisfies the above characteristics.
- the mechanical strength and formability were limited when the separator was made thinner. Therefore, the development of a separator overnight with a metal base material that is excellent in mechanical strength and formability even if the separator evening is made thinner is now underway.
- the first point is the low corrosion resistance derived from the characteristics of metals.
- water is present in the reaction of the fuel cell, but metal has a problem that it is easily corroded in an atmosphere containing water.
- the second point is high contact resistance (low conductivity) derived from the characteristics of metals. Since a passive layer is formed on the metal surface, the contact resistance is higher than that of carbon materials, and when the current is applied to such a metal separator, the voltage drop becomes large and the performance of the fuel cell may be reduced. There is.
- Japanese Patent Publication No. 10-2 2 8 9 14 discloses a technique in which stainless steel is used as a base material for a separate evening and the surface thereof is plated with gold (second conventional technique). According to this technique, gold having excellent corrosion resistance and electrical conductivity is applied to the surface of the base material, so that the corrosion resistance is improved by the characteristics of the gold and the contact resistance can be reduced.
- the first conventional technology has a problem that the separator becomes corroded during use because the separator becomes an oxidizing atmosphere during the reaction of generating electric power.
- the second conventional technology is expensive because it uses gold plating. Have the problem.
- the base material is made of metal, so the strength can be maintained even if the thickness of the separate evening is reduced.
- the conductive particles are formed by fusing, so that the conductive particles are not easily peeled off and are formed into a porous layer. Therefore, when pressed with being laminated with an anode or a cathode, the anode Alternatively, the contact area of the force sword is increased and the contact resistance to the electrode is reduced.
- the fuel cell separator is excellent in corrosion resistance.
- a metal glass sheet is placed in a mold provided with groove-shaped irregularities, the metal glass sheet and the mold are heated to between the glass transition temperature and the crystallization temperature, and the metal is heated by hot pressing.
- FIG. 1 is an explanatory view of a method for producing a metallic glass separator according to the present invention.
- FIG. 2 is a perspective view of a cell which is the smallest unit constituting the fuel cell.
- Figure 3 is a front view of a separate evening used for fuel cells.
- the method for producing a metallic glass separate according to the present invention includes the following steps.
- Step 1 The metal glass sheet 10 is placed in a mold 20 provided with groove-shaped irregularities in the chamber 30.
- Step 2 Between the glass transition temperature and the crystallization temperature, metal glass sheet 10 and gold Heat the mold 20.
- Step 3 Grooves are formed in the metallic glass sheet 10 by hot pressing.
- the heating and molding be performed in an inert atmosphere. This is achieved by filling the chain bar 30 with an inert gas. Further, the thickness of the metal glass sheet 10 is preferably 50 to 2500 zm.
- separators for polymer electrolyte fuel cells that are made of stainless steel and those that are made of stainless steel with gold plating. Therefore, there is a problem that it is corroded during use, and there is a problem that the cost will be increased if gold plating is applied.
- the metal glass separator according to the present invention can suppress corrosion because the metal glass theoretically has no crystal grain boundary that is the starting point of oxidation. It is also superior in strength and electrical conductivity to currently used carbon materials. Further, since the number of processes can be reduced as compared with the case of using a carbon material, the manufacturing cost can be reduced.
- the metal glass sheet can be directly provided with a groove, it is relatively inexpensive and simple to use a metal glass separator that has superior corrosion resistance, strength, and conductivity compared to a separator made of a conventional carbon material. Can be manufactured.
- the maximum sheet area 500 mm ⁇ 500 mm
- the maximum groove height 1.0 mm
- the maximum thickness of the metal glass sheet 2500 This is advantageous in that the processable dimensions can be made relatively large.
- the metal glass is superior in corrosion resistance, strength, and conductivity than a separator made of a conventional carbon material. A separate evening can be manufactured relatively inexpensively and easily.
- the maximum sheet area 50 O mm ⁇ 50 O mm
- the maximum groove height 1. O mm
- the maximum thickness of the metal glass sheet 25 O / xm. Therefore, the processable dimensions can be made relatively large.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Fuel Cell (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2004/018516 WO2006059402A1 (ja) | 2004-12-03 | 2004-12-03 | 金属ガラスセパレータの製造方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2004/018516 WO2006059402A1 (ja) | 2004-12-03 | 2004-12-03 | 金属ガラスセパレータの製造方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006059402A1 true WO2006059402A1 (ja) | 2006-06-08 |
Family
ID=36564845
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/018516 WO2006059402A1 (ja) | 2004-12-03 | 2004-12-03 | 金属ガラスセパレータの製造方法 |
Country Status (1)
Country | Link |
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WO (1) | WO2006059402A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20130074313A1 (en) * | 2007-08-20 | 2013-03-28 | California Institute Of Technology | Multilayered Cellular Metallic Glass Structures and Methods of Preparing the Same |
US9556054B2 (en) | 2013-07-26 | 2017-01-31 | Corning Incorporated | Corrugated sheet, method of manufacture thereof, and mold therefor |
US20210328233A1 (en) * | 2020-04-21 | 2021-10-21 | Hamilton Sundstrand Corporation | Bulk metallic glass interconnect for high power density fuel cell |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5990366A (ja) * | 1982-11-15 | 1984-05-24 | Hitachi Ltd | 硫酸電解液型燃料電池 |
JPS63277736A (ja) * | 1987-05-07 | 1988-11-15 | Mitsubishi Metal Corp | りん酸型燃料電池用セパレ−タ− |
JPH10102223A (ja) * | 1996-09-26 | 1998-04-21 | Akihisa Inoue | Fe系非晶質合金 |
JP2000050923A (ja) * | 1998-08-05 | 2000-02-22 | Akihisa Inoue | 装身具とその製造方法 |
JP2001303218A (ja) * | 2000-04-20 | 2001-10-31 | Japan Science & Technology Corp | 高耐蝕性・高強度Fe−Cr基バルクアモルファス合金 |
JP2004273314A (ja) * | 2003-03-10 | 2004-09-30 | Daido Steel Co Ltd | 燃料電池用金属セパレータ、燃料電池用金属セパレータの製造方法及び燃料電池 |
-
2004
- 2004-12-03 WO PCT/JP2004/018516 patent/WO2006059402A1/ja active Application Filing
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5990366A (ja) * | 1982-11-15 | 1984-05-24 | Hitachi Ltd | 硫酸電解液型燃料電池 |
JPS63277736A (ja) * | 1987-05-07 | 1988-11-15 | Mitsubishi Metal Corp | りん酸型燃料電池用セパレ−タ− |
JPH10102223A (ja) * | 1996-09-26 | 1998-04-21 | Akihisa Inoue | Fe系非晶質合金 |
JP2000050923A (ja) * | 1998-08-05 | 2000-02-22 | Akihisa Inoue | 装身具とその製造方法 |
JP2001303218A (ja) * | 2000-04-20 | 2001-10-31 | Japan Science & Technology Corp | 高耐蝕性・高強度Fe−Cr基バルクアモルファス合金 |
JP2004273314A (ja) * | 2003-03-10 | 2004-09-30 | Daido Steel Co Ltd | 燃料電池用金属セパレータ、燃料電池用金属セパレータの製造方法及び燃料電池 |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20130074313A1 (en) * | 2007-08-20 | 2013-03-28 | California Institute Of Technology | Multilayered Cellular Metallic Glass Structures and Methods of Preparing the Same |
US8813339B2 (en) * | 2007-08-20 | 2014-08-26 | California Institute Of Technology | Multilayered cellular metallic glass structures and methods of preparing the same |
US9556054B2 (en) | 2013-07-26 | 2017-01-31 | Corning Incorporated | Corrugated sheet, method of manufacture thereof, and mold therefor |
US20210328233A1 (en) * | 2020-04-21 | 2021-10-21 | Hamilton Sundstrand Corporation | Bulk metallic glass interconnect for high power density fuel cell |
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