CN115188979A - Ordered platinum-cobalt intermetallic compound oxidation procatalyst and preparation method and application thereof - Google Patents
Ordered platinum-cobalt intermetallic compound oxidation procatalyst and preparation method and application thereof Download PDFInfo
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- CN115188979A CN115188979A CN202211061393.8A CN202211061393A CN115188979A CN 115188979 A CN115188979 A CN 115188979A CN 202211061393 A CN202211061393 A CN 202211061393A CN 115188979 A CN115188979 A CN 115188979A
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- 229910000765 intermetallic Inorganic materials 0.000 title claims abstract description 42
- CLBRCZAHAHECKY-UHFFFAOYSA-N [Co].[Pt] Chemical compound [Co].[Pt] CLBRCZAHAHECKY-UHFFFAOYSA-N 0.000 title claims abstract description 34
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 230000003647 oxidation Effects 0.000 title claims description 7
- 238000007254 oxidation reaction Methods 0.000 title claims description 7
- 239000003054 catalyst Substances 0.000 claims abstract description 40
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 10
- 239000001301 oxygen Substances 0.000 claims abstract description 10
- 239000002105 nanoparticle Substances 0.000 claims abstract description 8
- 230000009467 reduction Effects 0.000 claims abstract description 7
- 239000002245 particle Substances 0.000 claims abstract description 6
- 239000000843 powder Substances 0.000 claims abstract description 5
- 239000007787 solid Substances 0.000 claims abstract description 5
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 26
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 16
- DSVGQVZAZSZEEX-UHFFFAOYSA-N [C].[Pt] Chemical compound [C].[Pt] DSVGQVZAZSZEEX-UHFFFAOYSA-N 0.000 claims description 15
- 238000000227 grinding Methods 0.000 claims description 13
- 239000007864 aqueous solution Substances 0.000 claims description 12
- 229910052697 platinum Inorganic materials 0.000 claims description 12
- 229910017052 cobalt Inorganic materials 0.000 claims description 11
- 239000010941 cobalt Substances 0.000 claims description 11
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 11
- 238000007598 dipping method Methods 0.000 claims description 11
- 238000001035 drying Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 10
- 239000000243 solution Substances 0.000 claims description 10
- 239000000126 substance Substances 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 9
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 7
- 238000000137 annealing Methods 0.000 claims description 7
- GVPFVAHMJGGAJG-UHFFFAOYSA-L cobalt dichloride Chemical compound [Cl-].[Cl-].[Co+2] GVPFVAHMJGGAJG-UHFFFAOYSA-L 0.000 claims description 7
- XONPDZSGENTBNJ-UHFFFAOYSA-N molecular hydrogen;sodium Chemical compound [Na].[H][H] XONPDZSGENTBNJ-UHFFFAOYSA-N 0.000 claims description 7
- ACVYVLVWPXVTIT-UHFFFAOYSA-M phosphinate Chemical compound [O-][PH2]=O ACVYVLVWPXVTIT-UHFFFAOYSA-M 0.000 claims description 7
- 229910052698 phosphorus Inorganic materials 0.000 claims description 7
- 239000011574 phosphorus Substances 0.000 claims description 7
- 230000009466 transformation Effects 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 5
- 239000011261 inert gas Substances 0.000 claims description 5
- 239000003638 chemical reducing agent Substances 0.000 claims description 3
- 239000002904 solvent Substances 0.000 claims description 3
- 239000006229 carbon black Substances 0.000 claims description 2
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 2
- 230000001939 inductive effect Effects 0.000 claims 1
- 239000000446 fuel Substances 0.000 abstract description 7
- 230000003197 catalytic effect Effects 0.000 abstract description 3
- 230000002378 acidificating effect Effects 0.000 abstract description 2
- 239000012528 membrane Substances 0.000 abstract description 2
- 238000006722 reduction reaction Methods 0.000 description 9
- 238000009210 therapy by ultrasound Methods 0.000 description 8
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical group [Cu+2].C1=CC(C(=C2C=CC([N-]2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3[N-]2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 RKTYLMNFRDHKIL-UHFFFAOYSA-N 0.000 description 3
- 239000004570 mortar (masonry) Substances 0.000 description 3
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- 238000002791 soaking Methods 0.000 description 3
- 238000003786 synthesis reaction Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000003917 TEM image Methods 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
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- 230000007613 environmental effect Effects 0.000 description 1
- 238000001027 hydrothermal synthesis Methods 0.000 description 1
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- 238000012827 research and development Methods 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 238000013112 stability test Methods 0.000 description 1
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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
-
- 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
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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
- H01M4/8825—Methods for deposition of the catalytic active composition
- H01M4/8828—Coating with slurry or ink
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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
-
- 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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Abstract
The invention relates to an ordered platinum-cobalt intermetallic compound oxidation-original catalyst, a preparation method and application thereof. The prepared catalyst is black solid powder, and the particle size of the nano particles of the ordered platinum-cobalt intermetallic compound catalyst is 5-30 nm. The preparation method provided by the invention is easy to implement and control, has strong operability, and can be popularized to the field of preparation of other intermetallic compounds. The catalyst related by the invention has better performances such as oxygen reduction catalytic activity, stability and the like under an acidic condition than commercial catalysts, and can be widely applied to the fields of proton exchange membrane fuel cells, metal-air fuel cells and the like.
Description
Technical Field
The invention belongs to the technical field of catalysts, and particularly relates to an ordered platinum-cobalt intermetallic compound oxidation procatalyst and a preparation method and application thereof.
Background
The crisis of energy, the deterioration of environment, the urgent need of clean energy, the fuel cell has the advantages of less pollution, environmental protection, high power density, etc., however, the slow reaction kinetics problem existed in the oxygen reduction reaction process of the cathode directly affects the whole fuel cell energy deviceThe reaction efficiency becomes a key factor for restricting the large-scale commercial development of the fuel cell. Currently, platinum carbon catalysts are still the most commonly used catalysts to improve the efficiency of oxygen reduction reactions. However, the activity of the platinum-carbon catalyst tends to decrease with the passage of time during the catalytic process, and the activity is to be further improved, thereby restricting the large-scale application. Therefore, the development of a catalyst with high efficiency and high stability for oxygen reduction reaction is an urgent problem to be solved. Ordered Pt-Co intermetallic compound with face-centered tetragonal structure and through atomsdThe strong interaction of the orbitals is bonded together and is orderly arranged in a long range in a specific crystal lattice direction, so that the orbitals have higher thermodynamic stability, and the orbitals show better stability than corresponding disordered solid solution alloy materials in the oxygen reduction catalytic reaction. However, the synthesis is extremely difficult due to the precise atomic ratios required and the energy barrier to break the disordered to ordered transition during synthesis. Therefore, the research and development of a simple, effective and controllable synthesis method of the platinum-cobalt intermetallic compound oxygen reduction catalyst with high stability and high activity is of great significance.
Disclosure of Invention
The invention aims to solve the problems of poor durability and the like of a platinum-carbon catalyst in an oxygen reduction reaction, ensure high activity of the catalyst and solve the problem of difficult synthesis of an ordered platinum-cobalt intermetallic compound, and provides a preparation method and application of the ordered platinum-cobalt intermetallic compound oxidation catalyst. The method is simple, feasible and controllable, has strong operability, and can promote the ordered structure transformation and the improvement of the activity and the stability of the catalyst.
In order to achieve the purpose, the invention adopts the following technical scheme: the ordered platinum-cobalt intermetallic compound oxidation catalyst is black solid powder, and the particle size of the nanoparticles of the ordered platinum-cobalt intermetallic compound catalyst is 5-30 nm.
In a preferred embodiment of the invention, the mass ratio of platinum to cobalt is 2:1-10; the particle size of the nanoparticles of the ordered platinum-cobalt intermetallic compound catalyst is 5-10 nm.
The invention also provides a preparation method of the ordered platinum-cobalt intermetallic compound oxidation procatalyst, which comprises the following steps:
(1) Adopting platinum carbon as a nano seed to realize a seed guiding method;
(2) Carrying out dipping treatment by adopting a cobalt source;
(3) Carrying out dipping treatment by adopting a phosphorus source;
(4) And drying the product obtained by dipping, and then annealing to realize the transformation of the ordered intermetallic compound.
In a preferred embodiment of the present invention, in the step (1), the platinum carbon is commercial Johnson Matthey-PtC, TANAKA-Pt/C, shanghai Hesen Pt/C or homemade platinum carbon; more preferably, glycol is used as a solvent and a reducing agent, and the prepared carbon black loaded platinum nanoparticles are nano-seeds.
In a preferred embodiment of the present invention, in the step (1), the mass fraction of platinum in the platinum-carbon is 10% to 80%.
In a preferred embodiment of the invention, in the step (2), the cobalt source is an aqueous solution of cobalt chloride, the concentration of the aqueous solution of cobalt chloride is 0.05-10 mol/L, and the mass ratio of platinum to cobalt is 2:1-10.
In a preferred embodiment of the invention, in the step (3), the phosphorus source is a sodium dihydrogen hypophosphite aqueous solution, the concentration of the sodium dihydrogen hypophosphite aqueous solution is 0.1-20 mol/L, and the mass ratio of phosphorus to cobalt is 1:1-10.
In a preferred embodiment of the present invention, the annealing process is to generate a second phase first under inert gas, and then induce structural transformation of the second phase to realize transformation of the ordered intermetallic compound.
In a preferred embodiment of the invention, in the step (4), the drying is carried out at 50-80 ℃ for at least 10 h until the drying is completed to obtain a dried substance; and the annealing treatment comprises the steps of grinding the obtained dried substance, heating to 400-1000 ℃ at a speed of 5-10 ℃/min in an inert atmosphere, keeping the temperature for less than 10 h, cooling to room temperature, and grinding to obtain the ordered platinum-cobalt intermetallic compound protoxide catalyst.
The invention also protects the application of the catalyst with the ordered platinum-cobalt intermetallic compound structure as an oxygen reduction catalyst.
Compared with the prior art, the method comprises the steps of firstly preparing platinum nano seeds by using ethylene glycol as a solvent and a reducing agent, then dipping the required cobalt source and phosphorus source, carrying out annealing treatment on a sample after dipping and drying to generate a second phase firstly, then carrying out induced phase change of a second phase structure to realize the transformation of the ordered intermetallic compound, and obtaining the ordered platinum-cobalt intermetallic compound with the face-centered tetragonal structure, wherein the prepared catalyst is black solid powder, and the particle size of the nanoparticles of the ordered platinum-cobalt intermetallic compound catalyst is 5-30 nm. The coordination and strain effects generated by the ordered platinum-cobalt intermetallic compound with the face-centered tetragonal structure effectively regulate and control the electronic structure of the material surface, improve the activity of the catalyst, and simultaneously promote the improvement of the catalyst stability by the thermodynamically stable intermetallic compound. The preparation method provided by the invention is easy to implement and control, has strong operability, and can be popularized to the field of preparation of other intermetallic compounds. The catalyst related by the invention has better performances such as oxygen reduction catalytic activity, stability and the like under an acidic condition than commercial catalysts, and can be widely applied to the fields of proton exchange membrane fuel cells, metal-air fuel cells and the like.
Drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a TEM photograph of an ordered Pt-Co intermetallic compound procatalyst prepared in example 1.
FIG. 2 is an X-ray diffraction pattern of the ordered platinum cobalt intermetallic compound procatalyst oxide prepared in example 1.
FIG. 3 is a graph of a rotating disk of the stability test of the ordered platinum cobalt intermetallic compound procatalyst oxide prepared in example 1.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention.
Example 1
0.08 Adding Vulcan XC-72 into 30 mL ethylene glycol solution, stirring, and performing ultrasonic treatment about 1.0 h until the mixture is uniformly dispersed to obtain black suspension;
adding 1 mol/L ethylene glycol solution of chloroplatinic acid 1 mL, continuing ultrasonic treatment until the dispersion is uniform, adding 0.1 mol/L sodium hydroxide solution, adjusting the pH value to 9, pouring the solution into a microwave hydrothermal reaction kettle, carrying out microwave heating reaction at 190 ℃ for 0.4 h, and after the reaction is finished, carrying out suction filtration, washing and drying on the obtained solution to obtain black solid powder, namely, self-made platinum carbon is used as a seed;
putting platinum-carbon seeds obtained by microwave hydrothermal ethylene glycol reduction into a beaker, adding 0.1 mol/L cobalt chloride aqueous solution for dipping, and performing ultrasonic treatment until the mixture is uniformly dispersed to form black paste;
continuously adding 1.0 mol/L sodium dihydrogen hypophosphite aqueous solution for soaking, performing ultrasonic treatment until the mixture is uniformly dispersed, and drying to obtain a dried substance;
grinding the dried substance by an agate mortar, uniformly grinding, putting into a tube furnace, heating to 700 ℃ at a heating rate of 10 ℃/min under an inert gas atmosphere, preserving heat for 2 h, cooling to room temperature, and grinding to obtain the ordered platinum-cobalt intermetallic compound protoxide catalyst.
Example 2
Putting commercial Johnson Matthey platinum carbon as a seed into a beaker, adding 1.0 mol/L cobalt chloride aqueous solution for dipping, and performing ultrasonic treatment until the mixture is uniformly dispersed to form black paste;
continuously adding 1.0 mol/L sodium dihydrogen hypophosphite aqueous solution for soaking, performing ultrasonic treatment until the solution is uniformly dispersed, and drying to obtain a dried substance;
grinding the dried substance by an agate mortar, uniformly grinding, putting into a tube furnace, heating to 900 ℃ at a heating rate of 5 ℃/min under an inert gas atmosphere, preserving heat for 6 h, cooling to room temperature, and grinding to obtain the ordered platinum-cobalt intermetallic compound protoxide catalyst.
Example 3
Taking commercial TANAKA platinum carbon as a seed, wherein the mass fraction of platinum is 60%, putting the platinum into a beaker, adding 0.5 mol/L cobalt chloride aqueous solution for dipping, and performing ultrasonic treatment until the platinum is uniformly dispersed to form black paste;
continuously adding 1.0 mol/L sodium dihydrogen hypophosphite aqueous solution for soaking, performing ultrasonic treatment until the solution is uniformly dispersed, and drying to obtain a dried substance;
grinding the dried substance by an agate mortar, uniformly grinding, putting into a tube furnace, heating to 800 ℃ at the heating rate of 8 ℃/min under the atmosphere of inert gas, preserving the temperature of 1 h, cooling to room temperature, and grinding to obtain the ordered platinum-cobalt intermetallic compound protoxide catalyst.
The product prepared in example 1 was subjected to characterization analysis, and from a transmission electron micrograph of the ordered platinum-cobalt intermetallic compound procatalyst oxide prepared in example 1 shown in fig. 1, it can be seen that the catalyst was uniformly dispersed on the surface of the carbon support. As can be seen from fig. 2, the catalyst simultaneously has characteristic peaks of the platinum-cobalt intermetallic compound having a face-centered cubic structure, confirming the formation of the ordered platinum-cobalt intermetallic compound. As can be seen from FIG. 3, the prepared platinum-cobalt intermetallic compound pro-oxide catalyst still maintains a high half-wave potential after 10000 cycles and 30000 cycles of cyclic tests, and has very excellent stability.
The foregoing detailed description has described the basic principles and principal features of the invention. It will be appreciated by those skilled in the art that the scope of the present invention is not limited to the embodiments described above, and any changes or substitutions which are not thought of through the inventive work should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.
Claims (10)
1. The ordered platinum-cobalt intermetallic compound oxidation catalyst is characterized by being black solid powder, and the particle size of nanoparticles of the ordered platinum-cobalt intermetallic compound catalyst is 5-30 nm.
2. The ordered platinum-cobalt intermetallic compound procatalyst oxide according to claim 1, wherein the mass ratio of platinum to cobalt is 2:1-10; the particle size of the nano particles of the ordered platinum-cobalt intermetallic compound catalyst is 5-10 nm.
3. A method of preparing an ordered platinum cobalt intermetallic compound procatalyst according to claim 1 or 2, characterized in that it comprises the steps of:
(1) Adopting platinum carbon as a nano seed to realize a seed guiding method;
(2) Carrying out dipping treatment by adopting a cobalt source;
(3) Carrying out dipping treatment by adopting a phosphorus source;
(4) And drying the product obtained by dipping, and then annealing to realize the transformation of the ordered intermetallic compound.
4. The method according to claim 3, wherein in the step (1), the platinum carbon is commercial Johnson Matthey-PtC, TANAKA-Pt/C, shanghai Hesen Pt/C or homemade platinum carbon; more preferably, glycol is used as a solvent and a reducing agent, and the prepared carbon black loaded platinum nanoparticles are nano-seeds.
5. The preparation method according to claim 3, wherein in the step (1), the mass fraction of platinum in the platinum-carbon is 10% -80%.
6. The preparation method according to claim 3, wherein in the step (2), the cobalt source is an aqueous cobalt chloride solution, the concentration of the aqueous cobalt chloride solution is 0.05-10 mol/L, and the mass ratio of platinum to cobalt is 2:1-10.
7. The preparation method according to claim 3, wherein in the step (3), the phosphorus source is a sodium dihydrogen hypophosphite aqueous solution, the concentration of the sodium dihydrogen hypophosphite aqueous solution is 0.1-20 mol/L, and the mass ratio of phosphorus to cobalt is 1:1-10.
8. The method according to claim 3, wherein the annealing treatment comprises first generating a second phase under an inert gas, and then inducing structural transformation of the second phase to transform the ordered intermetallic compound.
9. The preparation method according to claim 3, wherein in the step (4), the drying is carried out at 50-80 ℃ for at least 10 h until the drying is completed to obtain a dried substance; and the annealing treatment comprises the steps of grinding the obtained dried substance, heating to 400-1000 ℃ at a speed of 5-10 ℃/min in an inert atmosphere, keeping the temperature for less than 10 h, cooling to room temperature, and grinding to obtain the ordered platinum-cobalt intermetallic compound protoxide catalyst.
10. Use of a catalyst having an ordered platinum-cobalt intermetallic structure according to any one of claims 1 to 2 or a catalyst having an ordered platinum-cobalt intermetallic structure prepared by the preparation method according to any one of claims 3 to 9 as an oxygen reduction catalyst.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116314872A (en) * | 2023-05-11 | 2023-06-23 | 苏州擎动动力科技有限公司 | Platinum-cobalt alloy catalyst and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103055893A (en) * | 2012-12-25 | 2013-04-24 | 北京化工大学 | Supported cobalt-platinum superlattice alloy nano particle composite catalyst and preparation method thereof |
| CN104475126A (en) * | 2014-12-11 | 2015-04-01 | 北京化工大学 | Carbon-supported core-shell type platinum cobalt-platinum catalyst for fuel cells and preparation method for carbon-supported core-shell type platinum cobalt-platinum catalyst |
| US20210184227A1 (en) * | 2019-12-16 | 2021-06-17 | Toyota Motor Engineering And Manufacturing North America, Inc. | INTERMETALLIC L10-NiPtAg CATALYSTS FOR OXYGEN REDUCTION REACTION |
| CN113206259A (en) * | 2021-04-22 | 2021-08-03 | 华中科技大学 | Platinum-based intermetallic nanocrystalline with ordered structure, and preparation and application thereof |
| CN114566657A (en) * | 2022-02-23 | 2022-05-31 | 福州大学 | Platinum-based ordered alloy catalyst for fuel cell and preparation method thereof |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103055893A (en) * | 2012-12-25 | 2013-04-24 | 北京化工大学 | Supported cobalt-platinum superlattice alloy nano particle composite catalyst and preparation method thereof |
| CN104475126A (en) * | 2014-12-11 | 2015-04-01 | 北京化工大学 | Carbon-supported core-shell type platinum cobalt-platinum catalyst for fuel cells and preparation method for carbon-supported core-shell type platinum cobalt-platinum catalyst |
| US20210184227A1 (en) * | 2019-12-16 | 2021-06-17 | Toyota Motor Engineering And Manufacturing North America, Inc. | INTERMETALLIC L10-NiPtAg CATALYSTS FOR OXYGEN REDUCTION REACTION |
| CN113206259A (en) * | 2021-04-22 | 2021-08-03 | 华中科技大学 | Platinum-based intermetallic nanocrystalline with ordered structure, and preparation and application thereof |
| CN114566657A (en) * | 2022-02-23 | 2022-05-31 | 福州大学 | Platinum-based ordered alloy catalyst for fuel cell and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116314872A (en) * | 2023-05-11 | 2023-06-23 | 苏州擎动动力科技有限公司 | Platinum-cobalt alloy catalyst and preparation method thereof |
| CN116314872B (en) * | 2023-05-11 | 2023-08-11 | 苏州擎动动力科技有限公司 | Platinum-cobalt alloy catalyst and preparation method thereof |
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