WO2019093765A2 - 자동차용 연료전지를 위한 다기능성 비백금 담지 촉매 및 그 제조 방법 - Google Patents
자동차용 연료전지를 위한 다기능성 비백금 담지 촉매 및 그 제조 방법 Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
- B01J21/18—Carbon
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/19—Catalysts containing parts with different compositions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/16—Reducing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/34—Irradiation by, or application of, electric, magnetic or wave energy, e.g. ultrasonic waves ; Ionic sputtering; Flame or plasma spraying; Particle radiation
- B01J37/341—Irradiation by, or application of, electric, magnetic or wave energy, e.g. ultrasonic waves ; Ionic sputtering; Flame or plasma spraying; Particle radiation making use of electric or magnetic fields, wave energy or particle radiation
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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
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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
- H01M2250/00—Fuel cells for particular applications; Specific features of fuel cell system
- H01M2250/20—Fuel cells in motive systems, e.g. vehicle, ship, plane
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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
Definitions
- the present invention relates to a multifunctional non-platinum supported catalyst, and more particularly to a ternary multifunctional non-platinum supported catalyst and a method for producing the same.
- Fuel cells that convert the chemical energy generated by the oxidation of fuel into electrical energy are attracting attention as a next-generation energy source.
- fuel cells that convert the chemical energy generated by the oxidation of fuel into electrical energy are attracting attention as a next-generation energy source.
- advantages such as reduction of fuel consumption, emission gas reduction, and environmentally friendly image.
- the fuel cell basically includes an anode, an oxygen cathode, and an electrolyte membrane disposed between the two electrodes, and this structure is referred to as a membrane / electrode assembly.
- Electrode catalysts are an important determinant of total activity.
- platinum supported on a support is most widely used. Platinum is a catalyst capable of promoting oxidation of fuel (hydrogen or alcohol) and reduction of oxygen up to 100 ° C at room temperature.
- the background art related to the present invention is Korean Patent Laid-Open Publication No. 10-2017-0088137 (published on August 1, 2017), which discloses a multifunctional non-platinum supported catalyst and a production method thereof.
- An object of the present invention is to provide a multifunctional non-platinum supported catalyst having an excellent oxygen generating reaction (OER) and a high hydrogen oxidation activity.
- OER oxygen generating reaction
- Another object of the present invention is to provide a process for producing the multifunctional non-platinum supported catalyst.
- the multifunctional non-platinum supported catalyst according to the present invention comprises a support; And ternary non-platinum particles supported on the support, wherein the ternary non-platinum particles include iridium (Ir), ruthenium (Ru), and yttrium (Y).
- ternary non-platinum particles include iridium (Ir), ruthenium (Ru), and yttrium (Y).
- ruthenium ruthenium
- Y yttrium
- the multifunctional non-platinum supported catalyst may include 5 to 50 parts by weight of the ternary non-platinum particles per 100 parts by weight of the carrier.
- the support may be a carbon-based support containing at least one of activated carbon, graphene, graphite, mesoporous carbon and carbon nanotubes, or may be a carbon-based support containing at least one of titanium (Ti), aluminum (Al) , Niobium (Nb), tantalum (Ta), antimony (Sb), and indium (In).
- a multifunctional non-platinum supported catalyst comprising a support; (Ir), ruthenium (Ru), scandium (Sc), lanthanum (La), cerium (Ce), and ternary platinum particles supported on the support. , Samarium (Sm), europium (Eu) or gadolinium (Gd).
- the present invention provides a process for preparing a multifunctional non-platinum supported catalyst comprising the steps of: (a) preparing a first mixture by mixing a carrier, an organic solvent and distilled water; (b) adding an iridium (Ir) precursor, a ruthenium (Ru) precursor and a yttrium (Y) precursor to the first mixture to form a second mixture; (c) irradiating the second mixture with an electron beam to reduce it; And (d) drying the third mixture irradiated with the electron beam.
- Ir iridium
- Ru ruthenium
- Y yttrium
- step (e) post-treating the dried third mixture in a hydrogen gas atmosphere.
- step (b) 300 to 500 parts by weight of the ruthenium (Ru) precursor and 10 to 300 parts by weight of the yttrium (Y) precursor may be added to 100 parts by weight of the iridium (Ir) precursor.
- the iridium (Ir) precursor, the ruthenium (Ru) precursor and the yttrium (Y) precursor may be added in an amount of 5 to 50 parts by weight based on 100 parts by weight of the carrier.
- the support may be a carbon-based support containing at least one of activated carbon, graphene, graphite, mesoporous carbon and carbon nanotubes, or may be a carbon-based support containing at least one of titanium (Ti), aluminum (Al) , Niobium (Nb), tantalum (Ta), antimony (Sb), and indium (In).
- ultrasound may be applied to the first mixture for 5 to 60 minutes to disperse the carrier.
- an electron beam of 0.1 to 1 MeV may be irradiated for 10 to 60 minutes.
- the post-treatment may be performed at 200 to 400 ° C for 30 minutes to 120 minutes.
- the post-treatment may be performed in an atmosphere of an inert gas: hydrogen gas in a mixing ratio of 3: 1 to 5: 1.
- a process for preparing a multifunctional non-platinum supported catalyst comprising: (a) preparing a first mixture by mixing a carrier, an organic solvent, and distilled water; (Ir) precursor, a ruthenium (Ru) precursor, and a scandium (Sc) precursor, a lanthanum (La) precursor, a cerium (Ce) precursor, a samarium (Sm) precursor, a europium (Eu) precursor, Preparing a second mixture by adding one of a precursor or a gadolinium (Gd) precursor; (c) irradiating the second mixture with an electron beam to reduce it; And (d) drying the third mixture irradiated with the electron beam.
- the non-platinum supported catalyst for fuel cells of the present invention includes iridium (Ir), ruthenium (Ru), and yttrium (Y) which are ternary non-platinum particles. Therefore, it is possible to show an oxygen evolution reaction (OER) superior to the conventional commercial non-platinum catalyst and platinum catalyst.
- Ir iridium
- Ru ruthenium
- Y yttrium
- non-platinum supported catalyst of the present invention has versatility to exhibit high activity for hydrogen oxidation reaction.
- the multifunctional non-platinum supported catalyst of the present invention may contain one or more of scandium (Sc), lanthanum (La), cerium (Ce), samarium (Sm), europium (Eu), or gadolinium Including species. Therefore, it is possible to exhibit excellent oxygen generation reaction as compared with the existing commercialized non-platinum catalyst and platinum catalyst.
- the method for producing the multifunctional non-platinum supported catalyst of the present invention uses an electron beam reduction method. Therefore, there is an advantage in that it is eco-friendly and simpler than the conventional gas phase reduction or solution reduction method.
- FIG. 1 is a flowchart showing a method for producing a multifunctional non-platinum supported catalyst according to the present invention.
- Fig. 2 is a TEM photograph (a) of the dispersed metal particles of Example 1 according to the present invention and a TEM photograph (b) of observing the dispersed metal particles of Comparative Example 1.
- FIG. 3 shows the results of comparison of the oxygen reduction (ORR) activities of Examples 1 to 5 and Comparative Examples 1 to 3 through a half cell.
- FIG. 4 shows the hydrogen oxidation reaction (HOR) activity of Example 1, Example 2, Example 5, and Comparative Example 1 through a half cell.
- Example 5 is a result of an optoelectronic spectroscopy (XPS) test of Example 5 according to the present invention.
- the multifunctional non-platinum supported catalyst according to the present invention is an oxygen generating reaction (OER) catalyst.
- the catalyst is a multifunctional catalyst that is active in the hydrogen oxidation reaction while being a catalyst that decomposes water to generate oxygen.
- the oxygen generating reaction catalyst exists in the fuel cell electrode, the catalyst carrier first decomposes the water before the catalyst is corroded due to the high potential atmosphere at the start / stop of the fuel cell. Therefore, the oxygen generating reaction catalyst can prevent the catalyst carrier from being corroded and prevent the catalyst activity from being lowered.
- the multifunctional non-platinum supported catalyst according to the present invention comprises a support and ternary non-platinum particles.
- the carrier is a carbon-based carrier containing at least one of activated carbon, graphene, graphite, mesoporous carbon and carbon nanotubes.
- the support may be a metal oxide fume containing at least one metal selected from the group consisting of titanium (Ti), aluminum (Al), tin (Sn), niobium (Nb), tantalum (Ta), antimony (Sb) It is delay.
- the mesoporous carbon refers to a porous carbon having mesopores. The mesopores may have an average diameter of 5 to 10 nm. The mesoporous carbon has a large specific surface area. When mesoporous carbon is used as the support, it is possible to support ternary non-platinum particles having better dispersibility than other support materials.
- the ternary non-platinum particles are dispersed in the carrier.
- the ternary non-platinum particles include iridium (Ir), ruthenium (Ru), and yttrium (Y).
- the iridium (Ir), ruthenium (Ru), and yttrium (Y) are excellent in durability among noble platinum noble metals. By appropriately mixing them, the oxygen generating reaction (OER) of the catalyst can be increased.
- the ternary non-platinum particles preferably include 300 to 500 parts by weight of ruthenium (Ru) and 10 to 300 parts by weight of yttrium (Y), based on 100 parts by weight of iridium (Ir).
- ruthenium (Ru) and yttrium (Y) are out of this range, The manufacturing cost is increased without improving the durability and oxygen generating reaction (OER) through the structural changes of the catalyst particles.
- the multifunctional non-platinum supported catalyst may include 5 to 50 parts by weight of the ternary non-platinum particles per 100 parts by weight of the carrier. When this range is satisfied, non-platinum particles can be stably dispersed in the support. In addition, it has an effect of increasing the durability of the catalyst and the oxygen generating reaction (OER). On the other hand, when the temperature is outside this range, there is a problem that the catalytic activity is insufficient or the dispersity is lowered, resulting in deterioration of catalytic activity. Further, the non-platinum particles may be unstably supported on the support. Accordingly, there is a problem that a multi-phase is formed, which causes catalyst activity and durability deterioration.
- a method for preparing a multifunctional non-platinum supported catalyst according to the present invention includes a first mixture preparation step (S110), a second mixture preparation step (S120), an electron beam irradiation step (S130), and a drying step (S140) .
- the first mixture preparation step (S110) is the first mixture preparation step (S110)
- a first mixture is prepared by mixing a carrier, an organic solvent, and distilled water.
- the carrier is a carbon-based carrier containing at least one of activated carbon, graphene, graphite, mesoporous carbon and carbon nanotubes.
- the support may be a metal oxide fume containing at least one metal selected from the group consisting of titanium (Ti), aluminum (Al), tin (Sn), niobium (Nb), tantalum (Ta), antimony (Sb) It is delay.
- the organic solvent may be at least one selected from the group consisting of ethylene glycol, 1,2-propylene glycol, 1,3-butanediol, 1,4-butanediol, neopentyl glycol, diethylene glycol, Diol and trimethylol propane; alcoholic solvents such as methanol, ethanol, isopropyl alcohol (IPA) and butanol; and mixtures thereof, but the present invention is not limited thereto.
- the organic solvent may serve not only to disperse the carrier but also to serve as a reducing agent.
- the organic solvent is preferably, for example, an ethylene glycol and an alcohol.
- the carrier, organic solvent and distilled water are mixed and stirred. Therefore, the first mixture in which the carrier is uniformly dispersed can be produced.
- the method may further include dispersing the carrier by irradiating the first mixture with ultrasonic waves for 5 to 60 minutes.
- the first mixture is stirred and dispersed using an ultrasound sonicator ultrasonic wave. Therefore, the support is uniformly dispersed in the first mixture. And then the metal precursor is uniformly supported to improve the activity and durability of the catalyst.
- an iridium (Ir) precursor, a ruthenium (Ru) precursor, and a yttrium (Y) precursor are added to the first mixture to prepare a second mixture.
- the iridium (Ir) precursor may be selected from, for example, iridium nitrate, iridium chloride, iridium sulfate, iridium acetate, iridium acetylacetonate, iridium cyanate, iridium isopropyl oxide, iridium butoxide, and H 2 IrCl 6 .6H 2 O ≪ / RTI >
- the ruthenium (Ru) precursor may be, for example, a chloride-based compound of ruthenium, a sulfide-based compound, or the like.
- the yttrium (Y) precursor may be, for example, a chloride-based compound of yttrium, a nitride-
- 300-500 parts by weight of the ruthenium (Ru) precursor and 10-300 parts by weight of the yttrium (Y) precursor may be added to 100 parts by weight of the iridium (Ir) precursor to prepare a second mixture.
- the content of the ruthenium (Ru) precursor and the yttrium (Y) precursor is out of this range, only the manufacturing cost increases without the durability and the effect of the oxygen generating reaction (OER).
- the content of the iridium (Ir) precursor, the ruthenium (Ru) precursor and the yttrium (Y) precursor may be 5 to 50 parts by weight based on 100 parts by weight of the carrier.
- non-platinum particles can be stably carried on the carrier.
- it has an effect of increasing the durability of the catalyst and the oxygen generating reaction (OER).
- OER oxygen generating reaction
- the non-platinum particles may be unstably supported on the support. As a result, a multi-phase can be formed, which leads to a problem that catalyst activity and durability are lowered.
- the pH of the second mixture is adjusted to 9 to 11, and the slurry state is prepared.
- the amount of the supported catalyst may decrease, or the supported catalysts may be aggregated with each other.
- the electron beam is a projected bundle of electrons.
- the electron beam can improve the activity and durability of the catalyst by preventing the formation of the metal oxide catalyst compared to the conventional solution reduction method or the gas phase reduction method. This effect can be confirmed by the XPS result in FIG. Figure 5 is data demonstrating that the catalyst is in a metal state.
- the electron beam is preferably irradiated with an electron beam of 0.1 to 1 MeV for 10 to 60 minutes.
- the irradiation amount of the electron beam is less than 0.1 MeV, reduction of the metal precursor may be insufficient. On the other hand, if it exceeds 1 MeV, the efficiency and economical efficiency may be lowered.
- the third mixture irradiated with the electron beam is dried.
- the third mixture is distilled under reduced pressure at room temperature. It is then washed with distilled water and dried. The drying can be carried out at room temperature for 1 to 24 hours, but is not limited thereto.
- the method may further include post-treating the dried third mixture in a hydrogen gas atmosphere.
- the purpose of the post treatment is to improve the activity and durability of the catalyst.
- post treatment is performed to metallize a trace amount of metal oxide.
- the post-treatment is preferably performed by heat-treating at 200 to 400 ° C for 30 minutes to 120 minutes. If the post-treatment temperature is lower than 200 ° C, the post-treatment temperature may be low and the activity of the non-platinum catalyst may be lowered, so that the effect of the post-treatment may be insufficient. When the temperature is higher than 400 ° C, the particles become more crystallized without increasing the durability as the post-treatment temperature becomes higher, and the activity of the stocking can be lowered.
- the post-treatment is performed in an atmosphere having an inert gas: hydrogen gas mixing ratio of 3: 1 to 5: 1. If the mixing ratio of the gas is out of this range, the cost of the manufacturing process can be increased without increasing the activity and durability of the catalyst.
- the inert gas may include at least one of argon, helium, neon, xenon, and nitrogen.
- the multifunctional non-platinum supported catalyst of the present invention for achieving another object is a catalyst containing at least one of scandium (Sc), lanthanum (La), cerium (Ce), samarium (Sm), europium (Eu) (Gd).
- ruthenium ruthenium
- Eu europium
- Gd gadolinium
- Platinum supported catalyst comprising one of scandium (Sc), lanthanum (La), cerium (Ce), samarium (Sm), europium (Eu) or gadolinium (Gd) in place of yttrium
- the preparation method is a method of preparing a precursor of a scandium (Sc) precursor, a lanthanum (La) precursor, a cerium (Ce) precursor, a samarium (Sm) precursor, a europium (Eu) precursor or a gadolinium (Gd) precursor instead of the yttrium To prepare a second mixture.
- a method for preparing a multifunctional non-platinum supported catalyst comprises the steps of (a) preparing a first mixture by mixing a carrier, an organic solvent and distilled water, (b) adding an iridium (Ir) precursor, ruthenium ) Precursor and one of scandium (Sc) precursor, lanthanum precursor, cerium precursor, samarium precursor, europium (Eu) precursor or gadolinium (Gd) (C) irradiating the electron beam to the second mixture to reduce the electron beam, and (d) drying the third mixture irradiated with the electron beam.
- a scandium (Sc) precursor 10 to 300 parts by weight of a scandium (Sc) precursor, a lanthanum precursor, a cerium precursor, a samarium precursor, a europium precursor or a gadolinium precursor may be added.
- step S110, step S130 and post-processing step post-processing may be further performed after step (d).
- step of irradiating ultrasonic waves may further include dispersing the carrier.
- 0.02 g of the catalyst is dispersed in 10 g of ethylene glycol to prepare a dispersion of the catalyst.
- the dispersion of the catalyst is dropped into the carbon rotary electrode with a micropipette. Subsequently, it was dried under reduced pressure at 80 ⁇ . Subsequently, 15 ⁇ L of a 5 wt% Nafion ethylene glycol solution was added dropwise into the electrode to which the catalyst was dropped. Then, the catalyst electrode was prepared by vacuum drying at 80 DEG C (see ACS Catal. 2012, 2, 1765-1772).
- Oxygenation reactions were assessed by measuring the current-potential value 5 times for the reproducibility of the electrode evaluation (see ACS Catal.2016, 6, 8069-8097).
- Hydrogen oxidation reaction activity was evaluated by measuring the current-potential value twice by scanning for reproducibility at 10 mV / s at 1600 rpm from -0.05 V to 1.0 V relative to RHE.
- Fig. 2 is a TEM photograph (a) of the dispersed metal particles of Example 1 according to the present invention and a TEM photograph (b) of observing the dispersed metal particles of Comparative Example 1.
- Table 2 above compares the oxygen generating reaction activity of Examples 1 to 5 and Comparative Examples 1 to 3 through a half cell.
- Table 2 shows the current density at 0.25 V, 0.35 V overvoltage.
- the activity of the oxygen generating reaction catalyst can be considered as the smaller the starting potential value and the higher the current density, the better the efficiency.
- the current densities of Examples 1 to 3 and Example 5 are higher than those of Comparative Examples 1 to 3, respectively.
- Example 2 Example 3, and Example 4 with Example 5
- the current density of the embodiment performing the post-treatment Example 3 and Example 5 represents a 4.00mA / cm 2 or higher in voltage 0.25V, represents a 14.00mA / cm 2 or higher in voltage 0.35V.
- This result is attributed to the metallization of trace amounts of metal oxide catalyst by post-treatment after electron beam irradiation. These results indicate that the catalyst activity and durability are improved.
- FIG. 3 shows the results of comparison of oxygen generating reaction (OER) activity between Examples 1 to 5 and Comparative Examples 1 to 3 through a half cell.
- OER oxygen generating reaction
- FIG. 4 shows the hydrogen oxidation reaction (HOR) activity of Example 1, Example 2, Example 5, and Comparative Example 1 through a half cell.
- the hydrogen oxidation reaction activity of Example 1, Example 2, and Example 5, compared to Comparative Example 1 is more than 150%.
- the hydrogen oxidation reaction activity of Example 5 shows 200% or more.
- the post-treatment can show excellent oxygen generation reaction and hydrogen oxidation reaction of the catalyst.
- Table 3 and Figure 5 are the results of the photoelectron spectroscopy (XPS) test of Example 5 according to the present invention. Referring to Table 3 and FIG. 5, in the case of Example 5, it can be confirmed that all the ternary non-platinum components are in a metallic state.
- a non-platinum catalyst comprising iridium (Ir), ruthenium (Ru) and yttrium (Y) is produced by electron beam reduction and post-treatment. Therefore, the activity for the oxygen generating reaction is high, and the production cost is low. In addition, there is an advantage that it can be obtained in a large amount. In addition, the non-platinum catalyst can replace the conventional platinum catalyst, and thus can exhibit a remarkable increase in price competitiveness.
- the non-platinum catalyst according to the present invention can be applied to a polymer electrolyte fuel cell (PEMFC), a phosphoric acid fuel cell (PAFC), or a direct methanol fuel cell (DMFC).
- PEMFC polymer electrolyte fuel cell
- PAFC phosphoric acid fuel cell
- DMFC direct methanol fuel cell
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Abstract
Description
Claims (15)
- 담지체; 및 상기 담지체에 담지되는 3원계 비백금 입자;를 포함하고,상기 3원계 비백금 입자는 이리듐(Ir), 루테늄(Ru) 및 이트륨(Y)을 포함하는 것을 특징으로 하는 다기능성 비백금 담지 촉매.
- 제1항에 있어서,상기 이리듐(Ir) 100중량부에 대하여, 상기 루테늄(Ru) 300~500중량부, 상기 이트륨(Y) 10~300중량부를 포함하는 것을 특징으로 하는 다기능성 비백금 담지 촉매.
- 제1항에 있어서,상기 다기능성 비백금 담지 촉매는상기 담지체 100중량부에 대하여, 상기 3원계 비백금 입자 5~50중량부를 포함하는 것을 특징으로 하는 다기능성 비백금 담지 촉매.
- 제1항에 있어서,상기 담지체는 활성탄소(activated carbon), 그래핀, 그라파이트, 메조 다공성 탄소 및 탄소나노튜브 중 1종 이상을 포함하는 탄소계 담지체이거나,티타늄(Ti), 알루미늄(Al), 주석(Sn), 니오븀(Nb), 탄탈륨(Ta), 안티몬(Sb) 및 인듐(In) 중 1종 이상의 금속을 포함하는 금속 산화물 담지체인 것을 특징으로 하는 다기능성 비백금 담지 촉매.
- 담지체; 및 상기 담지체에 담지되는 3원계 비백금 입자;를 포함하고,상기 3원계 비백금 입자는 이리듐(Ir), 루테늄(Ru), 및 스칸듐(Sc), 란타넘(La), 세륨(Ce), 사마륨(Sm), 유로퓸(Eu) 또는 가돌리늄(Gd) 중 1종을 포함하는 것을 특징으로 하는 다기능성 비백금 담지 촉매.
- (a) 담지체, 유기용매, 증류수를 혼합하여 제1혼합물을 제조하는 단계;(b) 상기 제1혼합물에 이리듐(Ir) 전구체, 루테늄(Ru) 전구체 및 이트륨(Y) 전구체를 첨가하여 제2혼합물을 제조하는 단계;(c) 상기 제2혼합물에 전자빔을 조사하여 환원시키는 단계; 및(d) 상기 전자빔을 조사한 제3혼합물을 건조하는 단계;를 포함하는 것을 특징으로 하는 다기능성 비백금 담지 촉매의 제조 방법.
- 제6항에 있어서,상기 (d) 단계 이후에, (e) 상기 건조된 제3혼합물을 수소 가스 분위기에서 후처리하는 단계;를 더 포함하는 것을 특징으로 하는 다기능성 비백금 담지 촉매의 제조 방법.
- 제6항에 있어서,상기 (b) 단계에서, 상기 이리듐(Ir) 전구체 100중량부에 대하여, 상기 루테늄(Ru) 전구체 300~500중량부, 상기 이트륨(Y) 전구체 10~300중량부를 첨가하는 것을 특징으로 하는 다기능성 비백금 담지 촉매의 제조 방법.
- 제6항에 있어서,상기 담지체 100중량부에 대하여, 상기 이리듐(Ir) 전구체, 상기 루테늄(Ru) 전구체 및 상기 이트륨(Y) 전구체를 5~50중량부로 첨가하는 것을 특징으로 하는 다기능성 비백금 담지 촉매의 제조 방법.
- 제6항에 있어서,상기 담지체는 활성탄소(activated carbon), 그래핀, 그라파이트, 메조 다공성 탄소 및 탄소나노튜브 중 1종 이상을 포함하는 탄소계 담지체이거나,티타늄(Ti), 알루미늄(Al), 주석(Sn), 니오븀(Nb), 탄탈륨(Ta), 안티몬(Sb) 및 인듐(In) 중 1종 이상의 금속을 포함하는 금속 산화물 담지체인 것을 특징으로 하는 다기능성 비백금 담지 촉매의 제조 방법.
- 제6항에 있어서,상기 (a) 단계와 (b) 단계 사이에,상기 제1혼합물에 5~60분 동안 초음파를 조사하여 담지체를 분산시키는 단계;를 더 포함하는 것을 특징으로 하는 다기능성 비백금 담지 촉매의 제조 방법.
- 제6항에 있어서,상기 (c) 단계에서, 0.1~1MeV의 전자빔을 10~60분 동안 조사하는 것을 특징으로 하는 다기능성 비백금 담지 촉매의 제조 방법.
- 제7항에 있어서,상기 (e) 단계에서, 상기 후처리는 200~400℃에서 30분~120분 동안 수행되는 것을 특징으로 하는 다기능성 비백금 담지 촉매의 제조 방법.
- 제7항에 있어서,상기 후처리는 비활성 가스 : 수소 가스의 혼합비가 3 : 1 ~ 5 : 1인 분위기에서 수행되는 것을 특징으로 하는 다기능성 비백금 담지 촉매의 제조 방법.
- (a) 담지체, 유기용매, 증류수를 혼합하여 제1혼합물을 제조하는 단계;(b) 상기 제1혼합물에 이리듐(Ir) 전구체, 루테늄(Ru) 전구체, 및 스칸듐(Sc) 전구체, 란타넘(La) 전구체, 세륨(Ce) 전구체, 사마륨(Sm) 전구체, 유로퓸(Eu) 전구체 또는 가돌리늄(Gd) 전구체 중 1종을 첨가하여 제2혼합물을 제조하는 단계;(c) 상기 제2혼합물에 전자빔을 조사하여 환원시키는 단계; 및(d) 상기 전자빔을 조사한 제3혼합물을 건조하는 단계;를 포함하는 것을 특징으로 하는 다기능성 비백금 담지 촉매의 제조 방법.
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| KR1020170147636A KR101901223B1 (ko) | 2017-11-07 | 2017-11-07 | 자동차용 연료전지를 위한 다기능성 비백금 담지 촉매 및 그 제조 방법 |
| KR10-2017-0147636 | 2017-11-07 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110813274A (zh) * | 2018-08-10 | 2020-02-21 | 中国科学院大连化学物理研究所 | 一种超细双金属IrRu纳米线型催化剂及其制备和应用 |
| CN112786902A (zh) * | 2019-11-07 | 2021-05-11 | 现代摩比斯株式会社 | 用于燃料电池的催化剂及其制造方法 |
| WO2023075704A3 (en) * | 2021-10-29 | 2023-08-17 | Nanyang Technological University | Catalysts |
| EP4379870A1 (en) * | 2022-11-30 | 2024-06-05 | Korens RTX Co., Ltd. | Oxidation-resistant catalyst for fuel cell, method of manufacturing the same, and fuel cell including the same |
| WO2026060623A1 (en) * | 2024-09-20 | 2026-03-26 | Dic Corporation | Oxygen evolution catalyst, catalyst ink, electrode, and method for producing oxygen evolution catalyst |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR101901223B1 (ko) * | 2017-11-07 | 2018-09-21 | 광주과학기술원 | 자동차용 연료전지를 위한 다기능성 비백금 담지 촉매 및 그 제조 방법 |
| CN114293200B (zh) * | 2021-12-15 | 2023-05-12 | 湖南大学 | 一种多孔碳负载非晶态/晶态钌基高效析氢催化剂及其制备与应用 |
| KR102909995B1 (ko) * | 2022-04-28 | 2026-01-09 | 주식회사 코렌스알티엑스 | 연료전지용 고결정성·다공성 촉매, 그 제조방법 및 이를 이용한 연료전지 |
| KR20250117183A (ko) | 2024-01-26 | 2025-08-04 | 원광대학교산학협력단 | 높은 비표면적을 가지는 금속이 도입된 인 도핑 그래피틱 나노 플레이트 및 이의 제조 방법 |
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| JP2007059140A (ja) * | 2005-08-23 | 2007-03-08 | Mitsubishi Chemicals Corp | 燃料電池用触媒及びその製造方法、並びに燃料電池用電極及び燃料電池 |
| KR101287104B1 (ko) * | 2006-10-31 | 2013-07-17 | 한국원자력연구원 | 연료 전지용 촉매의 제조 방법 |
| JP2009266623A (ja) * | 2008-04-25 | 2009-11-12 | Hitachi Maxell Ltd | PtP系触媒の製造方法、該製造方法により製造された触媒、該触媒を用いた燃料電池および膜電極接合体 |
| EP2830762B1 (en) * | 2012-03-30 | 2023-06-21 | Johnson Matthey Hydrogen Technologies Limited | Thin film catalytic material for use in fuel cells |
| US10629935B2 (en) * | 2014-10-24 | 2020-04-21 | Mitsui Mining & Smelting Co., Ltd. | Fuel cell electrode catalyst layer, production method therefor, membrane electrode assembly, and solid polymer fuel cell |
| KR101901223B1 (ko) * | 2017-11-07 | 2018-09-21 | 광주과학기술원 | 자동차용 연료전지를 위한 다기능성 비백금 담지 촉매 및 그 제조 방법 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110813274A (zh) * | 2018-08-10 | 2020-02-21 | 中国科学院大连化学物理研究所 | 一种超细双金属IrRu纳米线型催化剂及其制备和应用 |
| CN110813274B (zh) * | 2018-08-10 | 2020-12-01 | 中国科学院大连化学物理研究所 | 一种超细双金属IrRu纳米线型催化剂及其制备和应用 |
| CN112786902A (zh) * | 2019-11-07 | 2021-05-11 | 现代摩比斯株式会社 | 用于燃料电池的催化剂及其制造方法 |
| WO2023075704A3 (en) * | 2021-10-29 | 2023-08-17 | Nanyang Technological University | Catalysts |
| EP4379870A1 (en) * | 2022-11-30 | 2024-06-05 | Korens RTX Co., Ltd. | Oxidation-resistant catalyst for fuel cell, method of manufacturing the same, and fuel cell including the same |
| WO2026060623A1 (en) * | 2024-09-20 | 2026-03-26 | Dic Corporation | Oxygen evolution catalyst, catalyst ink, electrode, and method for producing oxygen evolution catalyst |
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| KR101901223B1 (ko) | 2018-09-21 |
| WO2019093765A3 (ko) | 2019-06-27 |
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