WO2007055229A1 - 燃料電池用電極触媒ならびにその製造方法 - Google Patents
燃料電池用電極触媒ならびにその製造方法 Download PDFInfo
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- WO2007055229A1 WO2007055229A1 PCT/JP2006/322247 JP2006322247W WO2007055229A1 WO 2007055229 A1 WO2007055229 A1 WO 2007055229A1 JP 2006322247 W JP2006322247 W JP 2006322247W WO 2007055229 A1 WO2007055229 A1 WO 2007055229A1
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- metal
- catalyst
- particles
- particle
- metal particles
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- 239000003054 catalyst Substances 0.000 title claims abstract description 100
- 239000000446 fuel Substances 0.000 title claims abstract description 30
- 238000004519 manufacturing process Methods 0.000 title description 9
- 229910052751 metal Inorganic materials 0.000 claims abstract description 82
- 239000002184 metal Substances 0.000 claims abstract description 82
- 239000002923 metal particle Substances 0.000 claims abstract description 65
- 239000002245 particle Substances 0.000 claims abstract description 37
- 239000010419 fine particle Substances 0.000 claims abstract description 31
- 238000000034 method Methods 0.000 claims abstract description 29
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 21
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 21
- 239000011163 secondary particle Substances 0.000 claims abstract description 13
- 239000011258 core-shell material Substances 0.000 claims abstract description 9
- 230000003197 catalytic effect Effects 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000011068 loading method Methods 0.000 abstract description 27
- 238000004220 aggregation Methods 0.000 abstract description 5
- 230000002776 aggregation Effects 0.000 abstract description 5
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 13
- 239000006185 dispersion Substances 0.000 description 9
- 238000006722 reduction reaction Methods 0.000 description 9
- 239000000084 colloidal system Substances 0.000 description 8
- 238000000151 deposition Methods 0.000 description 7
- 150000003839 salts Chemical class 0.000 description 7
- 239000000243 solution Substances 0.000 description 7
- 238000002360 preparation method Methods 0.000 description 6
- 230000009467 reduction Effects 0.000 description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 5
- 239000002253 acid Substances 0.000 description 5
- 239000003638 chemical reducing agent Substances 0.000 description 5
- 229910052697 platinum Inorganic materials 0.000 description 5
- 239000002994 raw material Substances 0.000 description 5
- 229910001111 Fine metal Inorganic materials 0.000 description 4
- 239000012018 catalyst precursor Substances 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000003792 electrolyte Substances 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 238000005470 impregnation Methods 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 229910052709 silver Inorganic materials 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 229920000557 Nafion® Polymers 0.000 description 2
- 239000006229 carbon black Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 229910052738 indium Inorganic materials 0.000 description 2
- 229910052741 iridium Inorganic materials 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000003273 ketjen black Substances 0.000 description 2
- 238000001465 metallisation Methods 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 229910052758 niobium Inorganic materials 0.000 description 2
- 229910052762 osmium Inorganic materials 0.000 description 2
- 229910052763 palladium Inorganic materials 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 229910052702 rhenium Inorganic materials 0.000 description 2
- 229910052703 rhodium Inorganic materials 0.000 description 2
- 229910052707 ruthenium Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910052715 tantalum Inorganic materials 0.000 description 2
- 229910052718 tin Inorganic materials 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- 229910052720 vanadium Inorganic materials 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 229910052726 zirconium Inorganic materials 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 229910021607 Silver chloride Inorganic materials 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000002848 electrochemical method Methods 0.000 description 1
- 238000003411 electrode reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910021397 glassy carbon Inorganic materials 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 238000005468 ion implantation Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910021404 metallic carbon Inorganic materials 0.000 description 1
- 239000013528 metallic particle Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000011859 microparticle Substances 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 239000005518 polymer electrolyte Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000011164 primary particle Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- HKZLPVFGJNLROG-UHFFFAOYSA-M silver monochloride Chemical compound [Cl-].[Ag+] HKZLPVFGJNLROG-UHFFFAOYSA-M 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000002336 sorption--desorption measurement Methods 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/96—Carbon-based electrodes
-
- B01J35/51—
-
- 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
- H01M4/8647—Inert electrodes with catalytic activity, e.g. for fuel cells consisting of more than one material, e.g. consisting of composites
- H01M4/8657—Inert electrodes with catalytic activity, e.g. for fuel cells consisting of more than one material, e.g. consisting of composites layered
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/88—Processes of manufacture
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/90—Selection of catalytic material
- H01M4/92—Metals of platinum group
-
- 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
-
- 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
-
- 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
Definitions
- the present invention relates to a fuel cell electrode catalyst and a method for producing the same, and more specifically, a fuel cell electrode catalyst carrying catalyst metal fine particles in a high metal loading amount and a high dispersion state, and a method for producing the same About.
- Fuel cells are attracting attention as a power generation system that directly converts the energy of fuel into electrical energy, and development is rapidly advancing at home and abroad. Fuel cells have the advantage of not polluting the environment because the product of power generation is only water, and attempts have been made to use them, for example, for household cogeneration and for driving power sources for automobiles. There is.
- Patent Document 1 discloses a manufacturing method thereof.
- Patent Document 3 discloses a method of subjecting conductive carbon to a nitric acid oxidation treatment and a hydrophilization treatment.
- the catalyst metal becomes conductive by activating the surface of the support. It is reported that the catalyst metal is supported only on the surface of carbon black and the catalytic metal utilization rate at the time of electrode reaction increases.
- Patent Document 1 Japanese Patent Application Laid-Open No. 9 167 622
- Patent Document 2 Japanese Patent Application Laid-Open No. 2001-93531
- Patent Document 3 Japanese Patent Application Laid-Open No. 2005-025947
- factors such as the type, concentration, and deposition rate of the metal salt used as a raw material in the undiluted solution are particles of metal particles of the produced catalyst.
- factors such as the type, concentration, and deposition rate of the metal salt used as a raw material in the undiluted solution.
- the diameter In order to greatly affect the diameter, it was necessary to control all the above factors. Under the influence of these multiple factors, it was extremely difficult to find the conditions for depositing the metal on the support at a uniform deposition rate during the loading step.
- the force of the metal particles formed preferentially on the support during the supporting step causes the metal particles to be unevenly formed on the surface of the support in order to act as a reducing catalyst for the metal salt b. .
- a colloid having a controlled particle size distribution is prepared in advance, and then metallic particles are loaded on a carrier.
- the interaction between the catalyst metal particles (usually having a particle diameter of several nm) and the support is weak, so that there is a problem that a simple adsorption and support makes it difficult to obtain a high supported amount of catalyst.
- an electrode catalyst prepared from metal colloid containing catalyst metal particles having a particle diameter of several nm there is a problem that metal particles are preferentially supported on the grain boundaries of the carrier.
- the conventional methods for producing a fuel cell electrode catalyst have problems, respectively, and the performance as the electrode catalyst does not decrease, and the high loading amount, the high dispersion, and the uniform size are uniform.
- a fuel cell electrode catalyst carrying a single catalytic metal particle is not obtained!
- the present invention has been made in view of the above circumstances, and an object thereof is to achieve excellent uniformity of metal particle size which prevents aggregation even at high loading amount, high dispersion, and high loading amount.
- the purpose is to provide a fuel cell electrode catalyst supporting metal particles.
- metal particles of 2.0 ⁇ m or less can be uniformly supported with good affinity to a carbon support.
- the distance between the metal fine particles can be easily controlled by adding an organic substance such as an amine or an alcohol simultaneously with the metal raw material in the supporting step and removing it in the subsequent step.
- catalyst metal particles having a secondary particle structure formed of a plurality of the metal particles having a size of 2.0 or less or catalyst metal particles having a core-shell structure having a core having a particle size of 2.0 or less It was found that high loading and high dispersion were possible.
- the method further comprises a first supporting step of supporting a metal fine particle core of 2.0 nm or less and a second supporting step of depositing metal fine particles in the vicinity of the metal fine particle core or growing a metal shell outside the metal fine particle core.
- the electrode catalyst for a fuel cell of the present invention has a secondary particle structure in which the catalyst metal particles supported on the conductive carbon support have a plurality of metal fine particles having a particle size of 2.0 or less, and has a secondary particle structure.
- the catalyst metal particles are characterized in that the particle size is 6.0 nm or less.
- Each primary metal particle constituting the secondary particles may be a combination of metal particles of the same kind or different kinds of metal particles, and in particular, if the repulsion force f sequence is limited, Ti, V, Fe, Co, Ni
- metals such as Cu, Zn, Zr, Nb, Ru, Rh, Pd, Ag, In, Sn, Ta, W, Re, Os, Ir, Pt and Au can be used.
- the electrode catalyst for a fuel cell as an embodiment of the present invention has a core-shell structure in which catalyst metal particles supported on a conductive carbon support have metal particles of 2.0 nm or less as a core. It is characterized by
- the metal to be used as the core is not particularly limited. For example, Ti, V, Fe, Co, Ni, Cu, Zn, Zr, Nb, Ru, Rh, Pd, Ag, In, Sn, Ta, W, Re, Os And Ir, Pt, Au, etc. can be suitably used.
- the core metal and the shell metal may be the same metal species, but different metal species can be preferably prepared.
- the metal to be the shell is preferably a metal that does not dissolve in the acid.
- a catalyst having a transition metal as a core and a shell metal as a combination of one or more noble metals can be suitably prepared.
- the particle size of the core metal particles is preferably 2.0 nm or less, and more preferably 1.5 nm or less.
- the particle size of the core metal particles is larger than 2.0%, the particle diameter of the finally obtained catalyst metal particles will be too large, and the spacing between the catalyst metal particles will be small, so aggregation tends to occur, and as a result, High loading amount and high dispersion catalyst can not be obtained.
- Another embodiment of the present invention is characterized in that the catalyst metal particles are partially or completely alloyed by heat treatment.
- the catalytic metal particles having a secondary particle structure or core-shell structure can be easily alloyed by heat treatment.
- the alloyed catalyst can improve the resistance to CO poisoning and can enhance the performance of the electrode catalyst.
- the method for producing an electrode catalyst for a fuel cell of the present invention in the first supporting step of forming metal particles of 2.0 ⁇ m or less in which the particle spacing is controlled on the conductive carbon carrier, It is characterized in that it is a second supporting step of forming metal fine particles. Fine metal particles of 2.0 nm or less can be uniformly dispersed on the surface of the carrier having a strong bonding force with carbon. Therefore, the particle size of the metal fine particle core in the first loading step is desirably 2.0 or less, and more desirably 1.0 nm or less. In this way, the distance between the metal particles can be controlled, and can be suitably used as a catalyst precursor for the production of the final high dispersion / high loading electrode catalyst.
- the metal fine particles are formed in the vicinity of the metal fine particle nucleus, or the metal shell is formed outside the metal fine particle nucleus, and at that time, the metal fine particles carried in the first carrying step are And improve the hydrophilicity of the carbon particle surface, and the metal particles are preferentially supported in the vicinity of the metal core.
- the metal fine particles function as a catalyst in the metal deposition reaction of the reduction deposition method, they are selectively supported only in the vicinity of the metal core.
- the distance between the metal fine particle nuclei is controlled to be constant, and the metal particles are made uniform. It can be dispersed and supported. Furthermore, in the second step, the metal particles can be selectively supported, and while maintaining the distance between the metal particles controlled in the first step, it is possible to easily increase the metal loading amount.
- the method of supporting the metal fine particle nucleus in the first step may be any method capable of controlling the particle size of the metal to 2.0 or less.
- adsorption method, impregnation method, ion implantation method, ion exchange method, metal colloid A loading method, a reduction deposition method, a precipitation method, etc. can be preferably used.
- the method of controlling the spacing of the particles is not particularly limited.
- the method of adding the metal raw material simultaneously with supporting the large organic molecule or the like which suppresses the particle aggregation and controlling the spacing of the metal nuclei such as removing in the subsequent step. Method is preferably used.
- the metal as a raw material, it is preferable to use colloidal microparticles, metal salts and the like. In addition, in order to obtain a high performance electrode catalyst, a chlorine-free raw material can be more preferably used. These fine metal particles catalyze the reduction reaction, and grow uniform catalytic metal particles in the loading operation in the second loading step. In the second step, a metal shell is formed outside the metal fine particle nucleus by adjusting the reduction ability of the reducing agent and the rate of the reduction reaction during the reduction reaction.
- the first step of forming metal fine particle nuclei on a conductive support, and the second step of selectively growing particles on metal nuclei It is characterized by becoming.
- the preparation method of the present invention it becomes possible to design the obtained electrode catalyst by controlling the supporting state of the metal fine particles in the first step.
- the particle size of the metal fine particles in the first step is 2.0 or less and further controlling the loading amount, it becomes possible to control the distance between the metal particles and the metal fine particles, and as described above, the electrode catalyst design Accuracy can be improved.
- the distance between the metal particles and the loading amount by controlling the distance between the metal particles and the loading amount, the aggregation of the catalyst metal is suppressed, and it becomes possible to prepare a catalyst with excellent durability. Furthermore, significant cost reduction can be expected because the preparation of the highly dispersed catalyst can be easily performed.
- FIG. 1 is a flow chart showing a method of preparing a catalyst according to an embodiment of the present invention.
- FIG. 2 is an image view of a catalyst precursor and a final catalyst according to an embodiment of the present invention.
- FIG. 3 is a transmission electron microscope (TEM) photograph of the catalyst after the first step according to an embodiment of the present invention (Example 2).
- O.lg of ketjen black powder was added to 100 ml of a Pt colloid solution having a concentration of 1.5 wt% containing metal particles having a particle size of l.O nm or less, and stirred at room temperature for 8 hours to support the metal particles.
- the obtained catalyst was subjected to ICP measurement to measure the amount of Pt contained in the catalyst.
- the results are shown in Table 1.
- the electrochemically active surface area of the obtained catalyst was measured by the following method.
- An ink was prepared by suspending 4 mg of the catalyst in a mixed solvent of water and ethanol.
- the obtained ink 2.51 was dropped so that 20 g of a catalyst was placed on a 0.07 cm 2 glassy carbon electrode, and then dried to prepare an electrode for evaluation of electrochemically active surface area.
- Diluted Nafion solution Du
- Electrolyte is 0.5M-H 2 SO 4
- a silver Z silver chloride electrode was used as a reference electrode and a platinum wire was used as a counter electrode.
- a potentiostat Solartron 260
- the loading amount of catalyst A was 46%, which is close to the target loading amount, whereas the loading amount of catalyst B was only 30%. According to the method of the present invention, it has been found that an electrode catalyst with high metal loading can be obtained. Further, according to TEM observation, the catalyst A was a plurality of secondary particles consisting of a plurality of primary particles having a size of 1.0 inch, and the secondary particles had a particle size of 6.0 nm or less. In catalyst B, huge aggregates of metal particles were present.
- the electrochemical measurement showed that the catalyst active surface area per unit mass of catalyst A was higher than that of comparative example catalyst B. Catalyst A was more dispersed in catalyst A.
- First step Creation of metal particle nuclei
- a 500 ml aqueous dispersion containing 5.0 g of a carbon support (Ketjen black) chloroplatinic acid containing 2.5 g of platinum was added. Further, 500 g of ethylene glycol and 50 mmd of NaOH were added. The mixture was heated and stirred at 60 ° C. for 24 hours. The solid content was collected by filtration, washed with water, and dried at 80 ° C. for 24 hours to obtain carbon particles supporting metal nuclei.
- Second loading step growth of catalytic metal particles
- the catalyst precursor obtained from the first loading step is further introduced into a solution containing chloroplatinic acid and an organic reducing agent (ethanol), and heated under reflux at 80 ° C. for 8 hours to form a core-shell structure.
- Catalyst C was obtained. Since the metal supported in advance has a catalytic effect on the metal deposition reaction, metal particles grow at a lower temperature, and a core-shell structure can be formed.
- the first supporting step of supporting fine metal core of 2.0 ⁇ or less on carbon particles and the second supporting step of growing metal on the metal core The catalyst preparation method is useful for the preparation of the above-mentioned catalyst.
- the catalyst of the present invention and the preparation method thereof can be applied to the production of an anode catalyst of a fuel cell and a cathode catalyst, and a fuel cell electrode catalyst of high dispersion / high loading amount can be provided.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Composite Materials (AREA)
- Manufacturing & Machinery (AREA)
- Catalysts (AREA)
- Inert Electrodes (AREA)
- Fuel Cell (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2006800419358A CN101305485B (zh) | 2005-11-09 | 2006-11-08 | 燃料电池用电催化剂及其制备方法 |
CA002627959A CA2627959A1 (en) | 2005-11-09 | 2006-11-08 | Electrode catalyst for fuel cell and method for producing same |
US12/093,077 US20100048387A1 (en) | 2005-09-11 | 2006-11-08 | Electrocatalyst for fuel cell and method of preparing the same |
EP06823151A EP1947719A4 (en) | 2005-11-09 | 2006-11-08 | ELECTRODE CATALYST FOR FUEL CELL AND PROCESS FOR PRODUCING THE SAME |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005-355390 | 2005-11-09 | ||
JP2005355390A JP2007134295A (ja) | 2005-11-09 | 2005-11-09 | 燃料電池用電極触媒ならびにその製造方法 |
Publications (1)
Publication Number | Publication Date |
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WO2007055229A1 true WO2007055229A1 (ja) | 2007-05-18 |
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Application Number | Title | Priority Date | Filing Date |
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PCT/JP2006/322247 WO2007055229A1 (ja) | 2005-09-11 | 2006-11-08 | 燃料電池用電極触媒ならびにその製造方法 |
Country Status (7)
Country | Link |
---|---|
US (1) | US20100048387A1 (ja) |
EP (1) | EP1947719A4 (ja) |
JP (1) | JP2007134295A (ja) |
KR (1) | KR20080066852A (ja) |
CN (1) | CN101305485B (ja) |
CA (1) | CA2627959A1 (ja) |
WO (1) | WO2007055229A1 (ja) |
Cited By (6)
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JP2009009924A (ja) * | 2007-06-26 | 2009-01-15 | Hyundai Motor Co Ltd | 固体電解質燃料電池用混合電極触媒素材の製造方法 |
WO2009096356A1 (ja) * | 2008-01-28 | 2009-08-06 | Toyota Jidosha Kabushiki Kaisha | 燃料電池用電極触媒、その製造方法、及びそれを用いた固体高分子型燃料電池 |
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 |
JP2009252543A (ja) * | 2008-04-07 | 2009-10-29 | Shin Etsu Chem Co Ltd | 燃料電池用電極触媒の製造方法 |
JP2010180441A (ja) * | 2009-02-04 | 2010-08-19 | Tosoh Corp | ガス拡散電極およびその製造方法並びにこれを用いた電解方法 |
CN105377428A (zh) * | 2013-05-10 | 2016-03-02 | 日本戈尔有限公司 | 燃料电池用电极催化剂、及使催化剂活化的方法 |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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Also Published As
Publication number | Publication date |
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JP2007134295A (ja) | 2007-05-31 |
CN101305485A (zh) | 2008-11-12 |
EP1947719A1 (en) | 2008-07-23 |
KR20080066852A (ko) | 2008-07-16 |
CN101305485B (zh) | 2011-04-13 |
CA2627959A1 (en) | 2007-05-18 |
EP1947719A4 (en) | 2010-01-13 |
US20100048387A1 (en) | 2010-02-25 |
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