CN115846675A - Binary metal alloy catalyst and preparation method and application thereof - Google Patents
Binary metal alloy catalyst and preparation method and application thereof Download PDFInfo
- Publication number
- CN115846675A CN115846675A CN202211394376.6A CN202211394376A CN115846675A CN 115846675 A CN115846675 A CN 115846675A CN 202211394376 A CN202211394376 A CN 202211394376A CN 115846675 A CN115846675 A CN 115846675A
- Authority
- CN
- China
- Prior art keywords
- mixed solution
- metal alloy
- nickel
- alloy catalyst
- binary metal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Catalysts (AREA)
Abstract
The invention discloses a binary metal alloy catalyst and a preparation method and application thereof. The preparation method of the binary metal alloy catalyst comprises the following steps: dispersing a conductive carrier in water, adding an excessive reducing agent, and stirring until the reducing agent is fully dissolved to obtain a mixed solution A; dissolving a noble metal precursor and a non-noble metal precursor in water to prepare a mixed solution B, then dropwise adding the mixed solution B into the mixed solution A, stirring at normal temperature, centrifugally washing to remove supernatant, drying a precipitate, performing heat treatment in a hydrogen-argon mixed atmosphere, and cooling to room temperature to obtain the binary metal alloy catalyst. The preparation process adopted by the binary metal alloy catalyst provided by the invention has the advantages of simple operation procedure, no pollution, low cost and capability of realizing batch preparation.
Description
The technical field is as follows:
the invention relates to the technical field of electrocatalysis, in particular to a binary metal alloy catalyst and a preparation method and application thereof.
Background art:
with global climate and environmental problems aggravated year by year, energy revolution advocating development of new green renewable energy as a main carrier has been started quietly, and fossil fuels, which were used as a main energy form in the past, are being slowly replaced by new energy forms, such as solar energy, wind energy, hydrogen energy, and the like. Wherein, the hydrogen energy product only generates water without carbon emission, and can realize the effective storage of the intermittent characteristic energy forms such as solar energy, wind energy and the like, thereby being a valuable green energy carrier. The preparation of hydrogen mainly depends on the steam reforming of natural gas at present, so that not only can extra energy be consumed, but also a large amount of greenhouse gas can be generated, and the pressure is caused on the environment; the pure hydrogen can be prepared by the water electrolysis method, and the intermittent energy sources can be stored and converted and utilized in the form of electric energy, so that the water electrolysis technology is one of the most potential hydrogen production ways in the future. Because the alkaline medium has a relatively mild chemical environment to the electrode material compared with the acidic medium, a potential guarantee can be provided for obtaining relatively ideal electrocatalytic activity and stability of the material, and the development of the water electrolysis technology in the alkaline environment is more and more concerned. However, in alkaline media, the kinetic rate of the electrohydroevolution reaction is much slower than in the corresponding acidic media, as is the case with the noble metal platinum, and it is therefore important to try to increase the kinetic reaction rate of the water dissociation step. In consideration of the scarcity of noble metal resources, the catalytic material is prepared by alloying the noble metal and the abundant transition metal, so that the hydrogen evolution kinetic reaction rate under an alkaline medium can be improved to a great extent, and the preparation cost of the catalyst can be reduced by controlling the use amount of the noble metal. Regarding the preparation of the platinum-containing binary metal alloy catalyst, in the prior art, for example, CN1774827a (supported catalyst for fuel cell, method for manufacturing the catalyst and fuel cell), two metal salts are added into the solution step by step, and the reducing agents used for the two metal salts are also added step by step, so that the two metal salts are metallized step by step in the solution reduction process, no alloying process is generated, and only the subsequent high-temperature pyrolysis process is realized; meanwhile, the alloying degree is not enough due to the processes of step-by-step addition and step-by-step reduction of the two metal salts in the technology.
The invention content is as follows:
the invention solves the problems in the prior art and provides a binary metal catalyst and a preparation method and application thereof, the preparation of the binary metal alloy catalyst is realized by a simple strategy of rapid chemical codeposition/mild heat treatment, wherein an amorphous structure provides a favorable space site for the adsorption of water molecules and water dissociation intermediate products in an alkaline medium, and a non-noble metal/noble metal binary alloy structure is formed, so that the surface is rich in metal species with high valence state, and the metal species and the high valence state cooperate to promote the dissociation of water and the generation of hydrogen.
The invention aims to provide a preparation method of a binary metal alloy catalyst, which comprises the following steps: dispersing a conductive carrier in water, adding an excessive reducing agent, and stirring until the reducing agent is fully dissolved to obtain a mixed solution A; dissolving a noble metal precursor and a non-noble metal precursor in water to prepare a mixed solution B, then dropwise adding the mixed solution B into the mixed solution A, stirring at normal temperature, centrifugally washing to remove supernatant, drying a precipitate, performing heat treatment in a hydrogen-argon mixed atmosphere, and cooling to room temperature to obtain the binary metal alloy catalyst. The preparation method is simple and easy to operate, green, pollution-free and low in cost, and can realize batch preparation.
According to the invention, on one hand, two metal salts are prepared into a mixed solution firstly, so that the two metals are synchronously reduced in the subsequent liquid phase reduction process, and the alloying degree of the two metals is further improved; on the other hand, different from the mild reduction mode that a reducing agent is dropwise added into a metal salt solution in the prior preparation technology, the method adopts a reverse rapid reduction strategy, and a mixed solution of two metal salts is added into an excessive reducing agent, so that the amorphous alloy is firstly prepared, and then the partially crystallized binary alloy catalyst is obtained by further heat treatment in a reducing atmosphere. The binary alloy catalyst for partial crystallization prepared by the invention still contains a large amount of amorphous structures because only partial crystallization treatment is carried out, which is very beneficial to the adsorption of intermediate species in the alkaline hydrogen evolution reaction, and is obviously different from the binary metal alloy catalyst prepared in the prior art.
Preferably, the preparation method specifically comprises the following steps: dispersing a carbon carrier in deionized water, adding an excessive reducing agent, stirring at normal temperature to obtain a mixed solution A, dissolving a precursor compound containing platinum and a precursor compound containing nickel in the deionized water to prepare a mixed solution B, wherein the mass ratio of platinum to nickel in the mixed solution B is 1:1-1. The amount of the substance of the metal in the mixed solution B means the sum of the amounts of the substances of platinum and nickel.
Further preferably, the carbon support is selected from one of carbon black (XC-72R), expanded graphite, graphene oxide, acetylene black and carbon nanotubes.
Further preferably, the platinum-containing precursor compound is selected from at least one of potassium chloroplatinate, ammonium chloroplatinate, chloroplatinic acid and potassium chloroplatinate, and the nickel-containing precursor compound is selected from at least one of nickel chloride hexahydrate, nickel acetate tetrahydrate, nickel nitrate hexahydrate and nickel sulfate hexahydrate.
More preferably, the ratio of the amount of platinum to the amount of nickel in the mixed solution B is 1.
More preferably, the hydrogen-argon mixed atmosphere has a hydrogen volume percentage of 5%, a heat treatment temperature of 400 ℃ and a heat treatment time of 1 hour.
Preferably, the reducing agent is one selected from the group consisting of sodium borohydride, potassium borohydride, hydrazine hydrate, and thiourea dioxide.
The invention also protects the binary metal alloy catalyst prepared by the preparation method, which is formed by loading partially crystallized alloy nano particles consisting of noble metals and non-noble metals on a conductive carrier, wherein the particle size range of the binary metal alloy nano particles is 2-10 nm, the loading amount of the noble metals is 2-10 wt.%, and the mass ratio of the noble metals to the non-noble metals is 1:1-1. Wherein the partially crystallized binary metal alloy comprises two structural forms of crystalline state and amorphous state.
The invention also protects the application of the binary metal alloy catalyst, and particularly relates to the application of the binary metal alloy catalyst in the catalysis of the hydrogen evolution reaction by electrolysis under the alkaline environment. The binary metal alloy catalyst provided by the invention has a certain degree of amorphous microstructure on the surface, can provide a favorable adsorption energy barrier for water molecules and water dissociation intermediate species in an alkaline medium, and has an alloy structure capable of accelerating the reaction kinetics in the water dissociation process and excellent electrochemical quality activity in alkaline electrolysis water hydrogen evolution catalysis, particularly under high current density.
Compared with the prior art, the invention has the following advantages:
1. the preparation of the binary metal alloy catalyst is realized by a simple strategy of rapid chemical codeposition/mild heat treatment, wherein an amorphous structure provides a favorable space site for the adsorption of water molecules and water dissociation intermediate products in an alkaline medium, and a non-noble metal/noble metal binary alloy structure is formed, so that the surface of the catalyst is rich in metal species with high valence, and the metal species and the high valence cooperatively promote the dissociation of water and the generation of hydrogen. The alloy nano particles are uniformly distributed on the surface of the carrier, the particle size distribution is uniform, and rich active sites are provided for the alkaline hydrogen evolution reaction.
2. The invention can effectively reduce the use amount of noble metal and improve the utilization efficiency of noble metal by alloying noble metal and non-noble metal, and shows excellent quality activity in alkaline hydrogen evolution reaction
Significantly better than commercial platinum carbon based on the same metal loading and electrochemical test conditions>
3. The binary metal alloy catalyst provided by the invention has the advantages of simple preparation process and operation procedure, greenness, no pollution and lower cost, and can realize batch preparation.
Description of the drawings:
FIG. 1 is an XRD pattern of a binary metal alloy catalyst prepared in examples 1-8 and comparative examples 1-2;
FIGS. 2a and 2b are SEM back-scattered electron images of the binary metal alloy catalysts prepared in example 1 and comparative example 1, respectively;
FIG. 3a is a TEM morphology of the binary metal alloy catalyst prepared in example 1, FIG. 3b is a particle size distribution histogram of the nanoparticles therein, and FIG. 3c is a selected area electron diffraction pattern;
FIG. 4a is a linear sweep voltammogram of the catalysts of examples 1 to 8 and comparative examples 1 to 4, and FIG. 4b is a linear sweep voltammogram of the corresponding samples at a current density of 10mA cm -2 Overpotential of timeThe value is obtained.
The specific implementation mode is as follows:
the following examples are further illustrative of the present invention and are not intended to be limiting thereof.
Unless otherwise defined, all terms of art used hereinafter have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the present invention. Unless otherwise specified, the experimental materials and reagents used herein are all conventional commercial products in the art.
The invention provides a binary metal alloy catalyst, which consists of a conductive carrier and binary metal alloy nano particles loaded on the conductive carrier, wherein the particle size of the binary metal alloy nano particles is 2-10 nm, the loading amount of platinum in the catalyst is 2-10 wt.%, and the mass ratio of noble metal to non-noble metal is 1:1-1.
The preparation method of the binary metal alloy catalyst specifically comprises the following steps: dispersing a carbon carrier in deionized water, adding an excessive reducing agent, and stirring at normal temperature until the excessive reducing agent is fully dissolved to obtain a mixed solution A; dissolving a platinum-containing precursor compound and a nickel-containing precursor compound in deionized water to prepare a mixed solution B, then dropwise adding the mixed solution B into the mixed solution A, stirring for a period of time at normal temperature, centrifugally washing and removing supernatant, collecting a precipitate, drying in vacuum, carrying out heat treatment for a period of time at a certain temperature in a hydrogen-argon mixed atmosphere, and obtaining the binary metal alloy catalyst after the temperature is reduced to room temperature.
The source of the carbon support raw material in the present invention is not particularly limited, and commercially available products known to those skilled in the art may be used, and in the following examples, the carbon support is preferably selected from one of carbon black (XC-72R), expanded graphite, graphene oxide, acetylene black, and carbon nanotubes.
In the invention, the ratio of the amount of platinum and nickel in the platinum-containing precursor compound and the nickel-containing precursor compound is 1:1-1, preferably the ratio of the amount of metal in the noble metal precursor molecule to the amount of non-noble metal precursor molecule is 1. In the following examples, the molar concentrations of the platinum-containing precursor compound and the nickel-containing precursor compound in the mixed solution B are preferably 0.25M, respectively.
In the present invention, the source of the reducing agent is not particularly limited, and commercially available products known to those skilled in the art may be used, and in the following examples, the reducing agent is preferably one selected from the group consisting of sodium perborohydride, potassium borohydride, hydrazine hydrate, and thiourea dioxide.
In the present invention, the sources of the platinum-containing precursor compound and the nickel-containing precursor compound are not particularly limited, and commercially available products known to those skilled in the art may be used. In the following embodiments, it is preferable that the platinum-containing precursor compound is selected from at least one of potassium chloroplatinate, ammonium chloroplatinate, chloroplatinic acid, and potassium chloroplatinate, and the nickel-containing precursor compound is selected from at least one of nickel chloride hexahydrate, nickel acetate tetrahydrate, nickel nitrate hexahydrate, and nickel sulfate hexahydrate.
In the present invention, the volume percentage of hydrogen in the hydrogen-argon mixed atmosphere is 5% to 20%, the heat treatment temperature is 300 ℃ to 700 ℃, the heat treatment time is 0.5 to 2 hours, more preferably, the volume percentage of hydrogen in the hydrogen-argon mixed atmosphere is 5%, the heat treatment temperature is 400 ℃, and the heat treatment time is 1 hour.
Example 1
Weighing 0.5g of carbon black (XC-72R) and dispersing in 20mL of deionized water, stirring for 20 minutes, adding 0.593g of potassium borohydride to fully dissolve to form a mixed solution A, dissolving potassium platinochloride (0.1 mmol) and nickel chloride hexahydrate (1 mmol) in water to prepare a mixed solution B, then dropping the mixed solution B into the mixed solution A, continuing stirring at normal temperature for half an hour, centrifugally washing, collecting, then placing in a 80 ℃ vacuum drying atmosphere (the volume percentage of hydrogen is 5 vol.%) to perform heat treatment at 400 ℃ for 1 hour, and naturally cooling to room temperature to obtain the target catalyst Pt-Ni/C-1.
The mass percentage of the noble metal in the Pt-Ni/C-1 is 3.27wt.%, the XRD pattern is shown in figure 1, and the diffraction peak is between the diffraction peaks of the metal platinum and the metal nickel and is wider than the peak type, which means that an alloy phase structure is formed between the metal nickel and the metal platinum, and the crystallization degree is lower. The TEM topography, particle size statistic and selected area electron diffraction are shown in fig. 3, it is evident from fig. 3a that the metal nanoparticles are uniformly dispersed on the surface of the conductive carrier, the corresponding particle size range is 8.0 ± 1.8nm (fig. 3 b), and the apparent diffusion ring in fig. 3c means that the crystallization degree of the metal alloy phase is low.
Example 2
Weighing 0.5g of carbon black (XC-72R) and dispersing in 20mL of deionized water, stirring for 20 minutes, adding 0.107g of potassium borohydride to fully dissolve to form a mixed solution A, preparing a mixed solution B from potassium platinochloride (0.1 mmol) and nickel chloride hexahydrate (0.1 mmol), then dropping the mixed solution B into the mixed solution A, continuing stirring at normal temperature for half an hour, centrifugally washing, collecting, then placing in a vacuum drying at 80 ℃, carrying out heat treatment at 400 ℃ for 1 hour in a hydrogen-argon mixed atmosphere (the volume percentage of hydrogen is 5 vol.%), and naturally cooling to room temperature to obtain the target catalyst Pt-Ni/C-2.
Example 3
Weighing 0.5g of carbon black (XC-72R) and dispersing in 20mL of deionized water, stirring for 20 minutes, adding 0.269g of potassium borohydride to fully dissolve the carbon black to form a mixed solution A, preparing a mixed solution B from potassium chloroplatinite (0.1 mmol) and nickel chloride hexahydrate (0.4 mmol), dropping the solution B into the solution A, continuously stirring at normal temperature for half an hour, centrifugally washing, collecting, placing in a vacuum drying at 80 ℃, carrying out heat treatment at 400 ℃ for 1 hour in a hydrogen-argon mixed atmosphere (the volume percentage of hydrogen is 5 vol.%), and naturally cooling to room temperature to obtain the target catalyst Pt-Ni/C-3.
Example 4
Weighing 0.5g of acetylene black, dispersing the acetylene black in 20mL of deionized water, stirring for 20 minutes, adding 0.593g of potassium borohydride to be fully dissolved to form a mixed solution A, preparing a mixed solution B from potassium chloroplatinate (0.1 mmol) and nickel nitrate hexahydrate (1 mmol), then dripping the mixed solution B into the mixed solution A, continuously stirring at normal temperature for half an hour, centrifugally washing, collecting, then placing in a vacuum drying at 80 ℃, carrying out heat treatment at 400 ℃ for 1 hour in a hydrogen-argon mixed atmosphere (the volume percentage of hydrogen is 5 vol.%), and naturally cooling to room temperature to obtain the target catalyst Pt-Ni/C-4.
Example 5
Weighing 0.5g of graphene oxide, dispersing in 20mL of deionized water, stirring for 20 minutes, adding 0.593g of potassium borohydride until the graphene oxide is fully dissolved to form a mixed solution A, preparing a mixed solution B from potassium chloroplatinate (0.1 mmol) and nickel acetate tetrahydrate (1 mmol), then dripping the mixed solution B into the mixed solution A, continuously stirring at normal temperature for half an hour, centrifugally washing, collecting, then placing in a vacuum drying at 80 ℃, carrying out heat treatment at 500 ℃ for 1 hour in a hydrogen-argon mixed atmosphere (the volume percentage of hydrogen is 5 vol.%), and naturally cooling to room temperature to obtain the target catalyst Pt-Ni/C-5.
Example 6
Weighing 0.5g of carbon black (XC-72R) and dispersing in 20mL of deionized water, stirring for 20 minutes, adding 0.593g of sodium borohydride to fully dissolve to form a mixed solution A, preparing a mixed solution B from potassium platinochloride (0.1 mmol) and nickel chloride hexahydrate (0.1 mmol), then dropping the mixed solution B into the mixed solution A, continuing stirring at normal temperature for half an hour, centrifugally washing, collecting, then placing in a 80 ℃ vacuum drying atmosphere (the volume percentage of hydrogen is 5 vol.%) to heat-treat at 600 ℃ for 1 hour, and naturally cooling to room temperature to obtain the target catalyst Pt-Ni/C-6.
Example 7
The same as example 1, except that: the conductive carrier is a carbon nano tube, noble metal and non-noble metal precursor molecules are chloroplatinic acid and nickel sulfate hexahydrate respectively, the molar ratio of metal in the noble metal and non-noble metal precursor molecules is 1.
Example 8
The same as example 1, except that: the conductive carrier is expanded graphite, the noble metal and non-noble metal precursor molecules are respectively ammonium chloroplatinite and nickel chloride hexahydrate, the molar ratio of metal in the noble metal and non-noble metal precursor molecules is 1:1, the reducing agent is thiourea dioxide, the molar ratio of the reducing agent to metal is 5:1, the volume percentage of hydrogen in hydrogen and argon atmosphere in the heat treatment process is 20vol.%, the heat treatment temperature is 300 ℃, the heat treatment time is 2 hours, and the obtained target catalyst is Pt-Ni/C-8.
Comparative example 1
Weighing 0.5g of carbon black (XC-72R) and dispersing in 20mL of deionized water, stirring for 20 minutes, dissolving potassium chloroplatinite (0.1 mmol) and nickel chloride hexahydrate (1 mmol) in water to prepare a mixed solution A, adding 0.593g of potassium borohydride to fully dissolve to form a mixed solution B, then dropping the mixed solution B into the mixed solution A, continuously stirring at normal temperature for half an hour, centrifugally washing, collecting, then placing in a 80 ℃ vacuum drying atmosphere (the volume percentage of hydrogen is 5 vol.%) to perform heat treatment at 400 ℃ for 1 hour, and naturally cooling to room temperature to obtain the target catalyst R-Pt-Ni/C.
As can be seen from the back-scattered electron image shown in fig. 2b, the catalyst prepared by the method described in comparative example 1 is liable to cause the formation of relatively large metal particles, compared to example 1 (fig. 2 a), thereby affecting the electrochemical hydrogen evolution activity thereof.
Comparative example 2
Weighing 0.5g of carbon black (XC-72R) and dispersing in 20mL of deionized water, stirring for 20 minutes, adding 0.593g of potassium borohydride until the mixture is fully dissolved to form a mixed solution, dissolving potassium platinochloride (0.1 mmol) in 4mL of deionized water, then dripping into the mixed solution, continuing stirring at normal temperature for half an hour, centrifugally washing, collecting, then placing in a vacuum drying at 80 ℃, carrying out heat treatment at 400 ℃ for 1 hour in a hydrogen argon mixed atmosphere (5 vol.%), and naturally cooling to room temperature to obtain the catalyst S-Pt/C.
Comparative example 3
Weighing 0.5g of carbon black (XC-72R) to disperse in 20mL of deionized water, stirring for 20 minutes, adding 0.593g of potassium borohydride to fully dissolve to form a mixed solution, dissolving nickel chloride hexahydrate (1 mmol) in 4mL of deionized water, then dripping into the mixed solution, continuing stirring for half an hour at normal temperature, centrifugally washing, collecting, then placing in a vacuum drying at 80 ℃, carrying out heat treatment for 1 hour at 400 ℃ in a hydrogen-argon mixed atmosphere (5 vol.%), and naturally cooling to room temperature to obtain the catalyst S-Ni/C.
Comparative example 4
Commercial platinum carbon catalyst (20 wt.%) from Zhuang Xinmo feng corporation.
The hydrogen evolution activity of the catalysts of examples 1-8 and comparative examples 1-4 was evaluated using linear sweep voltammetry in a 1M KOH electrolyte solution saturated with argon, as shown in fig. 4. As can be seen from FIG. 4a, the catalyst Pt-Ni/C-1 prepared in example 1 was used in an argon-saturated 1M KOH electrolyte solution at a current density of 10mA cm -2 At an overpotential of only 66mV, and at an overpotential of 100mV, the mass activity is
Superior to the values of the catalysts in the other examples (examples 2 to 8) and comparative examples (comparative examples 1 to 4) under the same test conditions, in the presence of a low noble metal charge->
The following shows excellent alkaline hydrogen evolution activity.
The above embodiments are only for the purpose of helping understanding the technical solution of the present invention and the core idea thereof, and it should be noted that those skilled in the art can make several improvements and modifications to the present invention without departing from the principle of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.
Claims (9)
1. The preparation method of the binary metal alloy catalyst is characterized by comprising the following steps of: dispersing a conductive carrier in water, adding an excessive reducing agent, and stirring until the reducing agent is fully dissolved to obtain a mixed solution A; dissolving a noble metal precursor and a non-noble metal precursor in water to prepare a mixed solution B, then dropwise adding the mixed solution B into the mixed solution A, stirring at normal temperature, centrifugally washing to remove supernatant, drying a precipitate, performing heat treatment in a hydrogen-argon mixed atmosphere, and cooling to room temperature to obtain the binary metal alloy catalyst.
2. The preparation method according to claim 1, comprising the following steps: dispersing a carbon carrier in deionized water, adding an excessive reducing agent, stirring at normal temperature to obtain a mixed solution A, dissolving a precursor compound containing platinum and a precursor compound containing nickel in the deionized water to prepare a mixed solution B, wherein the mass ratio of platinum to nickel in the mixed solution B is 1:1-1.
3. The method according to claim 2, wherein the carbon support is selected from one of carbon black, expanded graphite, graphene oxide, acetylene black, and carbon nanotubes.
4. The method of claim 2, wherein the platinum-containing precursor compound is selected from at least one of potassium chloroplatinate, ammonium chloroplatinate, chloroplatinic acid, and potassium chloroplatinate, and the nickel-containing precursor compound is selected from at least one of nickel chloride hexahydrate, nickel acetate tetrahydrate, nickel nitrate hexahydrate, and nickel sulfate hexahydrate.
5. The method according to claim 2, wherein the ratio of the amount of the platinum to the amount of the nickel in the mixed solution B is 1.
6. The method according to claim 2, wherein the hydrogen-argon mixed atmosphere contains 5% by volume of hydrogen, the heat treatment temperature is 400 ℃, and the heat treatment time is 1 hour.
7. The method according to claim 1 or 2, wherein the reducing agent is one selected from the group consisting of sodium borohydride, potassium borohydride, hydrazine hydrate, and thiourea dioxide.
8. The binary metal alloy catalyst prepared by the preparation method of claim 1, wherein the partially crystallized alloy nanoparticles composed of noble metals and non-noble metals are supported on a conductive carrier, the particle size range of the binary metal alloy nanoparticles is 2-10 nm, the noble metal loading is 2-10 wt.%, and the ratio of the amounts of the noble metals and the non-noble metals is 1:1-1.
9. The use of the binary metal alloy catalyst as recited in claim 8, wherein the binary metal alloy catalyst is used for catalyzing an electrolytic water hydrogen evolution reaction in an alkaline environment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211394376.6A CN115846675A (en) | 2022-11-08 | 2022-11-08 | Binary metal alloy catalyst and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211394376.6A CN115846675A (en) | 2022-11-08 | 2022-11-08 | Binary metal alloy catalyst and preparation method and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115846675A true CN115846675A (en) | 2023-03-28 |
Family
ID=85662808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211394376.6A Pending CN115846675A (en) | 2022-11-08 | 2022-11-08 | Binary metal alloy catalyst and preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115846675A (en) |
-
2022
- 2022-11-08 CN CN202211394376.6A patent/CN115846675A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Ma et al. | Single-atom catalysts for electrochemical energy storage and conversion | |
| WO2022257328A1 (en) | Cobalt-nitrogen co-doped three-dimensional structured carbon material, preparation method therefor, and application thereof | |
| CN110479329B (en) | Preparation and application of phosphorus-doped cobalt telluride nano material | |
| CN106732649A (en) | A kind of preparation method of alkaline oxygen evolution reaction elctro-catalyst | |
| CN113862693B (en) | Preparation method and application of nitrogen-doped mesoporous carbon-loaded high-dispersion Ru nanoparticle catalyst | |
| CN112103520B (en) | Anode catalyst of alcohol fuel cell | |
| CN111001428B (en) | Metal-free carbon-based electrocatalyst, preparation method and application | |
| Shi et al. | Biomass-derived precious metal-free porous carbon: Ca-N, P-doped carbon materials and its electrocatalytic properties | |
| CN111871427A (en) | Precious metal/molybdenum-nickel composite material and preparation method and application thereof | |
| CN112058293A (en) | Preparation method of nitrogen-phosphorus-codoped foam carbon nanosheet loaded NiCo nanoparticle composite material, product and application thereof | |
| CN113699554A (en) | Preparation method and application of rare earth metal and transition metal co-doped carbon-based material | |
| CN111617780A (en) | Nitrogen-doped nickel-molybdenum-based composite sulfide for stably producing hydrogen by electrolyzing water and preparation method | |
| CN114875442A (en) | Ruthenium-modified molybdenum-nickel nanorod composite catalyst and preparation method and application thereof | |
| CN115954493A (en) | Method for improving activity and stability of supported platinum-based catalyst | |
| CN113862715B (en) | Multivalent copper nanomaterial, preparation method thereof and application of multivalent copper nanomaterial serving as electrocatalyst in carbon capture technology | |
| CN113512738B (en) | Ternary iron-nickel-molybdenum-based composite material water electrolysis catalyst, and preparation method and application thereof | |
| CN114164445A (en) | V-Ni constructed based on doping and heterojunction strategies3FeN/Ni @ N-GTs full-electrolysis water-electric catalyst | |
| CN112490451A (en) | Cu-CoNCNs catalyst derived from folic acid, preparation and application thereof | |
| CN110354870B (en) | Preparation method and application of high-performance silver-doped cobalt sulfide oxygen evolution catalyst | |
| CN109317163B (en) | Preparation method of catalyst for hydrogen production by alcoholysis of sodium borohydride | |
| CN109225256B (en) | Catalyst for alcoholysis hydrogen production from sodium borohydride | |
| CN116657182A (en) | Iron-doped cobalt phosphide and cobalt phosphide heterojunction catalyst and preparation method and application thereof | |
| CN113943949B (en) | Platinum edge-modified nickel-based nano material and preparation method and application thereof | |
| CN113388844B (en) | Preparation method and application of low-platinum catalyst | |
| CN114606512A (en) | Ru-doped W4.6N4Particle @ nitrogen-doped graphene tube hydrogen evolution electrocatalyst |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |