WO2005088748A1 - 固体高分子形燃料電池用アノード触媒 - Google Patents
固体高分子形燃料電池用アノード触媒 Download PDFInfo
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- WO2005088748A1 WO2005088748A1 PCT/JP2005/003736 JP2005003736W WO2005088748A1 WO 2005088748 A1 WO2005088748 A1 WO 2005088748A1 JP 2005003736 W JP2005003736 W JP 2005003736W WO 2005088748 A1 WO2005088748 A1 WO 2005088748A1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/88—Processes of manufacture
- H01M4/8878—Treatment steps after deposition of the catalytic active composition or after shaping of the electrode being free-standing body
- H01M4/8882—Heat treatment, e.g. drying, baking
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/8605—Porous electrodes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/90—Selection of catalytic material
- H01M4/92—Metals of platinum group
- H01M4/921—Alloys or mixtures with metallic elements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/90—Selection of catalytic material
- H01M4/92—Metals of platinum group
- H01M4/925—Metals of platinum group supported on carriers, e.g. powder carriers
- H01M4/926—Metals of platinum group supported on carriers, e.g. powder carriers on carbon or graphite
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/10—Fuel cells with solid electrolytes
- H01M8/1007—Fuel cells with solid electrolytes with both reactants being gaseous or vaporised
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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 an anode catalyst for a polymer electrolyte fuel cell and a method for producing the same.
- a polymer electrolyte fuel cell can be operated at a low temperature and can be miniaturized, and is attracting attention as a small power source for portable use.
- natural gas, reformed gas obtained by reforming methanol, etc., and methanol as liquid fuel are directly used as the supply fuel for polymer electrolyte fuel cells.
- the reformed gas contains a catalyst poisoning substance such as carbon monoxide, and when methanol is used as the liquid fuel, the catalyst may be used during the methanol oxidation process. Poisoning is a problem. For this reason, when using reformed gas or methanol as fuel, there is a problem that the catalyst performance is greatly reduced with use.
- platinum catalyst is known as a catalyst having excellent carbon monoxide oxidation properties and methanol oxidation properties, but it does not have sufficient performance for practical use as a fuel cell. First of all, it is desired to further improve the catalyst performance.
- a catalyst with improved carbon monoxide oxidation characteristics and methanol oxidation characteristics a catalyst in which a catalyst component obtained by adding a third element based on platinum ruthenium to a conductive carrier such as carbon is used.
- a catalyst component obtained by adding a third element based on platinum ruthenium to a conductive carrier such as carbon are known.
- Patent Document 1 a mixed solution containing a metal salt of a third component such as rhenium, tantalum, and gold in addition to a platinum salt and a ruthenium salt is used, and these three components are used as a conductive carrier.
- a method for producing an anode catalyst by simultaneously supporting the anode catalyst is disclosed.
- Patent Documents 2 and 3 platinum is supported on a carbon material, then ruthenium is supported, and then molybdenum or tungsten is supported as a third component.
- a method for producing an alloy catalyst is disclosed.
- the metal component is supported in three stages, the number of heat treatments is large, and the heat treatment temperature is as high as 600 to 900 ° C. There is a drawback that the catalyst activity tends to decrease.
- Patent Document 1 US Patent No. 3506494
- Patent Document 2 Japanese Patent Application Laid-Open No. 2001-15120
- Patent Document 3 JP 2001-15121 A
- the present invention has been made in view of the above-mentioned state of the art, and its main object is to have excellent performance as an anode catalyst for a polymer electrolyte fuel cell, An object of the present invention is to provide a catalyst excellent in element oxidation characteristics, alcohol oxidation characteristics, and the like.
- the present inventors have intensively studied to achieve the above object.
- an element belonging to Group 4 of the periodic table, an element belonging to Group 5 and an element belonging to Group 6 After at least one selected element is supported on a conductive carrier, platinum and ruthenium are simultaneously deposited on the carrier.
- the catalyst is compared with the catalyst obtained by the conventional method. It has been found that the metal component is homogeneously and highly dispersed.
- the obtained catalyst exhibited excellent performance as an anode catalyst for a polymer electrolyte fuel cell, and found that, in particular, carbon monoxide oxidation properties, alcohol oxidation properties, and the like were good.
- the present invention has been completed.
- the present invention provides the following anode catalyst for a polymer electrolyte fuel cell and a method for producing the same.
- a method for producing an anode catalyst for a polymer electrolyte fuel cell is provided.
- a polymer electrolyte fuel cell comprising the anode catalyst of item 3 above.
- a polymer electrolyte fuel cell comprising the anode catalyst of item 4 above.
- an element belonging to Group 4 of the periodic table, an element belonging to Group 5 and an element belonging to Group 6 are selected from at least one kind of element (hereinafter, may be referred to as “third component element”). ) On a conductive carrier, and a second supporting process in which platinum and ruthenium are simultaneously supported on the carrier. Hereinafter, each step will be specifically described.
- the conductive carrier various carriers conventionally used in anode catalysts for polymer electrolyte fuel cells can be used without particular limitation.
- carbon black it is preferable to use carbon black as a carrier, since it is excellent in corrosion resistance, conductivity, etc. and has a large specific surface area.
- the specific surface area determined by BET method is preferably used carbon black in the range of 200m 2 Zg- 1000m about 2 Zg.
- Such a carrier tool Examples of the body include carbon black commercially available under the trade name of Vulcan XC-72 (manufactured by Cabot Corporation).
- the third component element (at least one element selected from elements belonging to Group 4 of the periodic table, elements belonging to Group 5 and elements belonging to Group 6) is attached to the conductive carrier. After that, heat treatment is performed in a non-oxidizing atmosphere.
- the method of attaching the third component element to the conductive carrier is not particularly limited. Generally, according to the method of immersing the conductive carrier in a solution containing the third component element, the third component element is efficiently treated. Ternary elements can be deposited.
- the third component element include titanium, zirconium, and zinc as elements belonging to Group 4 of the periodic table, and vanadium, zirconium as elements belonging to Group 5 and the like. And tantalum.
- Elements belonging to Group 6 include chromium, molybdenum and tungsten. These elements can be supported alone or in combination of two or more.
- titanium, zirconium, vanadium, niobium, tantalum, chromium, molybdenum, tungsten and the like exhibit particularly good catalytic performance.
- the solution used to support the third component element can be used without any particular limitation as long as it is a solution in which the compound containing the third component element is uniformly dissolved.
- the solvent for example, in addition to water, various organic solvents such as methanol, ethanol, 1-propanol, 2-propanol, cyclohexane, acetone, ⁇ -butyl lactone, dichloromethane, methyl acetate, toluene, and acetonitrile can be used. it can. Moreover, you may use these mixed solvents.
- any compound can be used without particular limitation as long as it is soluble in the solvent used.
- the solvent for example, when water, alcohol, or the like is used as the solvent, salted titanium, salted vanadium, salted chrome, salted zirconium, salted niobium, salted molybdenum, hafnium chloride, tantalum chloride And salted territories such as salted ligament tungsten.
- the concentration of the compound containing the third component element in the solution is not particularly limited, but generally, efficient loading is possible within the range of about 110 to 10% by weight of the metal component. is there.
- the amount of the conductive carrier to be added in the method of volatilizing and removing the solvent described below, almost all of the third component element contained in the solution is supported on the carrier as it is. Based on the supported amount of the ternary element, it should be determined appropriately.
- the carrier is immersed in the solution containing the third component element by the above-described method, and the carrier is uniformly dispersed by stirring sufficiently. Then, the solvent is removed, and then heat treatment is performed in a non-oxidizing atmosphere. Just do it.
- the method of removing the solvent is not particularly limited, but usually, the solvent may be volatilized at a temperature lower than the boiling point of the solvent used, for example, at a temperature about 5 to 20 ° C lower than the boiling point. .
- the heat treatment atmosphere may be any non-oxidizing atmosphere, such as an inert gas atmosphere such as nitrogen or a rare gas, or a reducing atmosphere such as a hydrogen gas.
- the heat treatment may be performed while flowing an inert gas, a hydrogen gas, a mixed gas thereof, or the like at a gas flow rate of about 2 mlZ / 500 mlZ, preferably about 20 mlZ / lOOmlZ. It is not limited to such conditions.
- the heat treatment temperature is preferably about 200 to 600 ° C, more preferably about 250 to 350 ° C.
- the heating rate during the heat treatment is not particularly limited. However, in order to avoid rapid heating, the heating rate is about 10 ° CZ to about 200 ° CZ, preferably 50 ° CZ. A heating rate of about 100 ° CZ is appropriate.
- the heat treatment time is not particularly limited, but it is usually sufficient to maintain the above temperature range for about 10 minutes to 5 hours, preferably for about 1 hour to 13 hours.
- the solution containing platinum and ruthenium a solution in which a compound containing platinum and a compound containing ruthenium are uniformly dissolved may be used.
- the solvent similarly to the first supporting step, in addition to water, methanol, ethanol, topropanol, 2-propanol, cyclohexane, acetone, ⁇ -butyl ratataton, dichloromethane, methyl acetate, toluene, acetonitrile, etc. Can be used. Further, these mixed solvents may be used.
- Compounds containing platinum include hexacloplatinic acid, sodium hexacloplatinum (IV), sodium hexahydroxoplatinum (IV), potassium tetraclocaplatinate (II), and tris (ethylenediamine) Platinum chloride, hexammineplatinum chloride, pentaammineplatinum chloride, chlorotrisammineplatinum chloride, hexacloammonium platinumplatinum, cis-cyclochlorobis (pyrazine) platinum, cis-dichlorobis (4,4'-bipyridine ) Platinum, cis-dichlorobis (pyridin) platinum, triclo mouth (virazine) platinic acid, triclo mouth (4,4-biviridine) platinic acid, trans-dichloroammine platinum, dinitrodiammine platinum, platinum-troammine ethoxide, Tetravalent platinum Ammine solution, hexahydroxoplatin
- concentrations of the compound containing platinum and the compound containing ruthenium are not particularly limited. Normally, it can be efficiently deposited within the range of about 110% by weight as the total concentration of platinum and ruthenium metals.
- the ratio of the compound containing platinum to the compound containing ruthenium is preferably about 25 to 105 parts by weight as the amount of ruthenium metal with respect to 100 parts by weight of platinum metal.
- the carrier is immersed in a solution containing platinum and ruthenium according to the method described above, and is sufficiently stirred to uniformly disperse the carrier. Then, the solvent is removed, and then heat treatment is performed in a non-oxidizing atmosphere. By carrying out, the catalyst of the present invention can be obtained.
- the method of removing the solvent may be the same as in the first supporting step described above.
- the heat treatment temperature is the same as in the first supporting step, preferably about 200 to 600 ° C, more preferably about 250 to 350 ° C. Other heating conditions may be the same as in the first supporting step.
- the amount of the third component element is the total amount of platinum metal and ruthenium metal.
- the amount is preferably about 10 to 150 parts by weight, more preferably about 10 to 45 parts by weight, per 100 parts by weight.
- the amount of the catalytic metal component composed of platinum, ruthenium and the third component element is not particularly limited, but usually, platinum, ruthenium and tertiary metal are used per 100 parts by weight of the conductive carrier.
- the total metal content of the three component elements should be about 25-400 parts by weight.
- It is preferably about 65 to 150 parts by weight.
- the specific surface area of the supported catalytic metal component is very large as compared with the case where three types of catalytic metal components are supported in one treatment step. And a state in which the fine catalytic metal component is homogeneously and highly dispersed.
- Such a catalyst exhibits excellent activity as an anode catalyst for a polymer electrolyte fuel cell, and can exhibit particularly excellent performance in carbon monoxide oxidizing properties and methanol oxidizing properties.
- a catalyst containing platinum, ruthenium, and a third component element has a specific surface area of 60 m 2 / g or more, which cannot be obtained by a conventional production method.
- the specific surface area of the catalyst metal components can be increased by heat treatment at a relatively low temperature, a very large catalytic metal components without specific surface area prior of 60- 350m 2 / g approximately and responsible equity catalyst can do. Furthermore, the specific surface area can be further increased by appropriately controlling the manufacturing conditions.
- Such a catalyst exhibits excellent activity as an anode catalyst for a polymer electrolyte fuel cell, and particularly exhibits excellent performance in carbon monoxide oxidation characteristics and methanol oxidation characteristics.
- the specific surface area of the catalytic metal component is a value calculated by determining the adsorption amount of carbon dioxide by stripping voltammetry.
- platinum, ruthenium, and a catalytic metal component as a third component element are uniformly supported in a fine state without aggregation.
- the catalyst of the present invention is in a state where a fine catalytic metal component having a large specific surface area of the catalytic metal component is homogeneously and highly dispersed as compared with a catalyst obtained by a conventional method. It exhibits excellent catalytic performance as an anode catalyst for polymer electrolyte fuel cells. In particular, it has good oxidizing performance against carbon monoxide, methanol and the like. Therefore, the polymer electrolyte fuel cell using the anode catalyst of the present invention has good performance even when fuel containing liquid oxygen such as various reformed gases or liquid methanol is used as the fuel. Can be demonstrated.
- the structure of the polymer electrolyte fuel cell using the catalyst of the present invention is not particularly limited, and may be the same as a known fuel cell except that the catalyst of the present invention is used as an anode catalyst.
- a catalyst in which a catalytic metal component comprising platinum, ruthenium and a third component element is uniformly and highly dispersed on a conductive support.
- the catalyst of the present invention has excellent catalytic performance as an anode catalyst for a polymer electrolyte fuel cell.
- the oxidizing performance against carbon monoxide, methanol and the like is excellent.
- FIG. 1 is a drawing in which electronic data of a transmission electron micrograph of the catalyst obtained in Example 8 is printed out.
- FIG. 2 is a drawing in which electronic data of a transmission electron micrograph of the catalyst obtained in Comparative Example 8 is printed out.
- Example 2 In the same manner as in Example 1 except that instead of the ethanol solution of Shii-dani titanium used in Example 1, 1000 ml of an ethanol solution containing 100 mg of Shio-dani vanadium as a vanadium metal amount was used. Supported platinum, ruthenium and vanadium.
- the obtained carrier was subjected to the same procedures as in Example 1 to determine the specific surface area of the catalytic metal component, the peak potential of carbon monoxide oxidation, and the current density of methanol at 0.5 V (vs standard hydrogen potential). Was measured. The results are shown in Table 1 below.
- Example 2 In the same manner as in Example 1, except that 1000 ml of an ethanol solution containing 100 mg as a chromium metal is used instead of the ethanol solution of titanium chloride used in Example 1, Supported platinum, ruthenium and chromium.
- Example 1 In the same manner as in Example 1, except that instead of using the ethanol solution of Shiridani titanium used in Example 1, 1000 ml of an ethanol solution containing 100 mg of Shiridani zirconium as the amount of zirconium-zirconium metal, Platinum, ruthenium and zirconium were supported on carbon black. [0060] For the obtained carrier, the specific surface area of the catalytic metal component, the carbon monoxide oxidation peak potential, and the methanol oxidation current density at 0.5 V (vs standard hydrogen potential) in the same manner as in Example 1. was measured. The results are shown in Table 1 below.
- Example 2 In the same manner as in Example 1, except that 1000 ml of an ethanol solution containing 100 mg of niobium chloride as a niobium metal was used instead of the ethanol solution of titanium salt used in Example 1 on carbon black, Platinum, ruthenium and niobium were supported.
- Carbon black was prepared in the same manner as in Example 1 except that 1000 ml of an ethanol solution containing 100 mg of molybdenum salt was used in place of the ethanol solution of titanium salt used in Example 1 in place of the ethanol solution of titanium salt used in Example 1. On top, platinum, ruthenium and molybdenum were supported.
- Example 1 In the same manner as in Example 1, the obtained support was subjected to the specific surface area of the catalytic metal component, the carbon monoxide oxidation peak potential, and the methanol oxidation current density at 0.5 V (vs standard hydrogen potential). Was measured. The results are shown in Table 1 below.
- Example 1 In place of the ethanol solution of titanium salt used in Example 1 in place of ethanol solution containing 1000 mg of tungsten chloride as an amount of tungsten metal in the same manner as in Example 1, except that 1000 ml of an ethanol solution was used. Platinum, ruthenium and tungsten were supported. For the obtained carrier, the specific surface area of the catalytic metal component, the peak potential of carbon monoxide oxidation, and the methanol current density at 0.5 V (vs standard hydrogen potential) were measured in the same manner as in Example 1. did. The results are shown in Table 1 below.
- Example 1 was repeated except that 1000 ml of an ethanol solution containing 100 mg of tantalum as a tantalum metal was used instead of the ethanol solution of titanium salt used in Example 1. Similarly, platinum, ruthenium and tantalum were supported on carbon black. In the same manner as in Example 1, the specific surface area of the catalytic metal component, the peak potential of carbon monoxide oxidation, and the density of methanol oxidation current at 0.5 V (vs standard hydrogen potential) were measured for the obtained carrier. It was measured. The results are shown in Table 1 below.
- Example 2 In place of the ethanol solution of salted titanium used in Example 1, 1000 ml of an ethanol solution containing 100 mg of tantanochloride as a tantanole metal amount was used, and instead of a solution of 1,5-cyclooctagedenedimethylplatinum in cyclohexane, a salt was used. Platinum, ruthenium, and tantalum were supported on carbon black in the same manner as in Example 1, except that 300 ml of a cyclohexane solution containing 317.7 mg of ⁇ platinum metal as platinum metal was used.
- Example 2 Instead of the ethanol solution of titanium salt used in Example 1, using 1000 ml of an ethanol solution containing lOOmg of tantanole chloride as the metal amount of tantanole, and replacing the ethanol solution of ruthenium chloride with ruthenium nitrate as the metal amount of ruthenium. Platinum, ruthenium and tantalum were supported on carbon black in the same manner as in Example 1 except that 40 ml of an ethanol solution containing 82.3 mg was used.
- the residue obtained by the above method was heated at 300 ° C. for 3 hours to carry platinum, ruthenium and titanium on carbon black.
- Carbon black was prepared in the same manner as in Comparative Example 1 except that instead of the ethanol solution containing Shiridani titanium used in Comparative Example 1, 1000 ml of an ethanol solution containing 100 mg of Shiojiri Vanadium as a vanadium metal amount was used. Platinum, ruthenium and vanadium were supported thereon.
- Example 2 In the same manner as in Example 1, the obtained support was subjected to a specific surface area of a catalytic metal component, a carbon monoxide oxidation peak potential, and a methanol oxidation current density at 0.5 V (vs standard hydrogen potential). Was measured. The results are shown in Table 1 below.
- Example 2 In the same manner as in Example 1, the obtained carrier was subjected to a specific surface area analysis of the catalyst metal component. The carbon oxide oxidation peak potential and the methanol oxidation current density at 0.5 V (vs standard hydrogen potential) were measured. The results are shown in Table 1 below.
- Carbon black was prepared in the same manner as in Comparative Example 1 except that 1000 ml of an ethanol solution containing 100 mg of shiridani molybdenum as a molybdenum metal amount was used instead of the ethanol solution of titanium salt used in Comparative Example 1. On top, platinum, ruthenium and molybdenum were supported.
- Example 2 In the same manner as in Example 1, the obtained support was subjected to the measurement of the specific surface area of the catalytic metal component, the peak potential of carbon monoxide oxidation, and the methanol current density at 0.5 V (vs standard hydrogen potential). Was measured. The results are shown in Table 1 below.
- Example 1 In the same manner as in Example 1, the obtained support was subjected to the measurement of the specific surface area of the catalytic metal component, the peak potential of carbon monoxide oxidation, and the current density of methanol at 0.5 V (vs standard hydrogen potential). Was measured. The results are shown in Table 1 below.
- Example 10 246 0.533 128 Comparative Example 8 48 0.576 20 Comparative Example 9 None 38 0.591 18
- the carbon monoxide peak potential means a potential at which carbon monoxide is oxidized and removed. Therefore, based on the above results, each catalyst of the example shows that compared to the catalyst of the comparative example, even under the condition where carbon monoxide is present, the catalyst performance is less reduced under reduced carbon monoxide and the like. It can be seen that the fuel containing can be used effectively.
- the methanol oxidation current density at 0.5V indicates a current density that can be extracted at 0.5V, which is within a voltage range considered to be actually used.
- Each of the catalysts of the examples had a higher value of methanol oxidation current density than the catalyst of the comparative example using the same third component, indicating that methanol could be effectively used as fuel. You.
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US10/592,000 US20070178363A1 (en) | 2004-03-12 | 2005-03-04 | Anode catalyst for polymer electrolyte fuel cell |
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JP2004070260A JP4649574B2 (ja) | 2004-03-12 | 2004-03-12 | 固体高分子形燃料電池用アノード触媒 |
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WO2007142031A1 (ja) * | 2006-06-09 | 2007-12-13 | Shin-Etsu Chemical Co., Ltd. | ダイレクトメタノール型燃料電池用電解質膜・電極接合体 |
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JP2009238569A (ja) | 2008-03-27 | 2009-10-15 | Toshiba Corp | 燃料電池用触媒およびその製造方法、ならびにその触媒を用いた膜電極複合体および燃料電池 |
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JP2015065016A (ja) * | 2013-09-25 | 2015-04-09 | トヨタ自動車株式会社 | 燃料電池用電極触媒の製造方法 |
JP7190690B2 (ja) * | 2018-08-16 | 2022-12-16 | 国立大学法人横浜国立大学 | 酸化物触媒の製造方法 |
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Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2007055229A1 (ja) * | 2005-11-09 | 2007-05-18 | Shin-Etsu Chemical Co., Ltd. | 燃料電池用電極触媒ならびにその製造方法 |
US7727930B2 (en) | 2006-04-28 | 2010-06-01 | Kabushiki Kaisha Toshiba | Catalyst, membrane electrode assembly and fuel cell |
WO2007142031A1 (ja) * | 2006-06-09 | 2007-12-13 | Shin-Etsu Chemical Co., Ltd. | ダイレクトメタノール型燃料電池用電解質膜・電極接合体 |
JP2007329065A (ja) * | 2006-06-09 | 2007-12-20 | Shin Etsu Chem Co Ltd | ダイレクトメタノール型燃料電池用電解質膜・電極接合体 |
US9083026B2 (en) | 2006-06-09 | 2015-07-14 | Shin-Etsu Chemical Co., Ltd. | Electrolyte membrane-electrode assembly for direct methanol fuel cell |
WO2008105484A1 (ja) * | 2007-03-01 | 2008-09-04 | Shin-Etsu Chemical Co., Ltd. | 燃料電池用電極触媒の製造方法 |
JP2008218078A (ja) * | 2007-03-01 | 2008-09-18 | Shin Etsu Chem Co Ltd | 燃料電池用電極触媒の製造方法 |
JP2008243784A (ja) * | 2007-03-29 | 2008-10-09 | Shin Etsu Chem Co Ltd | 燃料電池用電極触媒の製造方法 |
WO2008120515A1 (ja) * | 2007-03-29 | 2008-10-09 | Shin-Etsu Chemical Co., Ltd. | 燃料電池用電極触媒の製造方法 |
US8748334B2 (en) | 2007-03-29 | 2014-06-10 | Shin-Etsu Chemical Co., Ltd. | Process for producing electrode catalyst for fuel cell |
WO2009125741A1 (ja) * | 2008-04-07 | 2009-10-15 | 信越化学工業株式会社 | 燃料電池用電極触媒及びその製造方法 |
Also Published As
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US20070178363A1 (en) | 2007-08-02 |
JP2005259557A (ja) | 2005-09-22 |
JP4649574B2 (ja) | 2011-03-09 |
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