CN114277397A - Electrocatalytic hydrogen evolution catalyst with core-shell structure and preparation method and application thereof - Google Patents
Electrocatalytic hydrogen evolution catalyst with core-shell structure and preparation method and application thereof Download PDFInfo
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Abstract
The invention provides an electrocatalytic hydrogen evolution catalyst with a core-shell structure, and a preparation method and application thereof, wherein the preparation method comprises the following steps: adjusting the pH value of the mixed solution containing melamine and a molybdenum source to acidity, stirring and heating until the water is completely evaporated to obtain precursor powder, and then annealing the precursor powder at high temperature in a nitrogen atmosphere to obtain the catalyst. The invention prepares the core-shell structure catalyst which takes molybdenum carbide as an inner core and nitrogen-doped carbon as a protective shell layer, and in order to improve the catalytic performance, noble metal platinum is introduced into a nitrogen-doped carbon layer in a form of single atom to form a platinum active site, so that the hydrogen evolution performance of the catalyst is improved, and when the platinum content is 4 percent, the current density is 10mA/cm2The overpotential of (2) is only 90mV (vs. RHE), and the cycling stability is good; the invention combines the advantages of noble metal platinum and molybdenum carbideThe cost is fully reduced, and the electrocatalytic hydrogen evolution performance is improved by increasing the active sites.
Description
Technical Field
The invention belongs to the technical field of electrocatalytic hydrogen production, and particularly relates to an electrocatalytic hydrogen evolution catalyst with a core-shell structure, and a preparation method and application thereof.
Background
As one of the most promising energy sources in the 21 st century, hydrogen energy is concerned by people due to the advantages of large combustion heat value, no pollution of combustion products, capability of using products as hydrogen production raw materials and the like; however, although hydrogen can have so many advantages, its practical application is still limited by the manufacturing technology.
At present, the mainstream industrial hydrogen production methods mainly comprise natural gas reforming hydrogen production, methanol hydrogen production, electrocatalytic hydrogen production and the like. Wherein: the electrocatalytic hydrogen production has the advantages of mature technology, simple equipment, no pollution, high hydrogen production purity and the like; however, the development of the electrocatalytic hydrogen production is limited by the problems of high preparation cost, difficult large-scale production and the like at present, and the electrolyte used for industrial electrocatalytic hydrogen production is generally an alkaline solution, so that the large-scale production is more limited. At present, the catalyst for electrocatalytic hydrogen production is mainly noble metal (such as platinum, gold, palladium, rhodium, etc.), which is also one of the factors of high preparation cost.
In order to solve the problem, researchers mainly strive in two directions at present, namely, developing and researching non-noble metals and non-metal catalysts; another is to reduce the amount of noble metal in the catalyst, both of which are effective in reducing costs.
Currently, two main types of catalysts are studied, one is that noble metal catalysts, noble metals and their alloys, etc., all have high electrocatalytic activity, versatility and high conductivity, and become the most used catalyst materials with the best catalytic performance at present, but the development of them is limited by the high price and instability. Researchers design and synthesize a series of noble metal monoatomic catalysts for the purpose of improving the atom utilization rate so as to reduce the cost, and the catalysts can provide more active sites for electrocatalytic hydrogen evolution. Another much studied is a transition metal-based catalyst, such as iron (Fe), cobalt (Co), nickel (Ni), molybdenum (Mo), etc., which is inexpensive and easily available. It has been studied that transition metal carbides have a surface electronic structure of the metalloid platinum, with molybdenum carbide being widely studied due to its higher electrocatalytic hydrogen evolution properties than other carbides. Although molybdenum carbide has the advantages of good conductivity, adjustable electronic structure and the like, single molybdenum carbide is not ideal for electrocatalytic hydrogen production, and therefore, the catalytic performance of molybdenum carbide is often improved by some modifications; for example, the microstructure of the catalyst material is adjusted to increase the electrochemical active area, noble metal atoms are introduced as catalytically active sites, and the conductivity of the catalyst is improved by introducing conductive carriers.
The invention is particularly provided aiming at some defects existing in the prior art.
Disclosure of Invention
The invention aims to provide an electrocatalytic hydrogen evolution catalyst with a core-shell structure, and a preparation method and application thereof.
The invention adopts the following technical scheme:
a preparation method of an electrocatalytic hydrogen evolution catalyst with a core-shell structure comprises the following steps:
adjusting the pH value of the mixed solution containing melamine and a molybdenum source to acidity, stirring and heating until the water is completely evaporated to obtain precursor powder, and then annealing the precursor powder at high temperature in a nitrogen atmosphere to obtain the catalyst.
In the above technical solution, the preparation method of the electrocatalytic hydrogen evolution catalyst with the core-shell structure further includes:
before heating to evaporate water, a chloroplatinic acid solution was added dropwise to the mixed solution after the pH was adjusted to 4 to 6.
Further, in the above technical scheme, the high temperature annealing comprises heat preservation at 480-525 ℃ for 30-180min and then at 700-1000 ℃ for 30-180 min.
In detail, in the above technical scheme, the high temperature annealing is specifically carried out by heating from room temperature to 480-.
In detail, in the above technical scheme, the flow rate of the nitrogen gas is controlled to be 30-100mL/min during the high-temperature annealing.
In one embodiment of the present invention, the preparation method of the electrocatalytic hydrogen evolution catalyst with the core-shell structure specifically comprises the following steps:
s1, weighing melamine, adding the melamine into methanol, and carrying out ultrasonic treatment for 20-45min to obtain a uniform suspension A;
s2, weighing ammonium molybdate, adding the ammonium molybdate into ethanol, stirring, dropwise adding dilute hydrochloric acid, and ultrasonically mixing until the ammonium molybdate is completely dissolved to obtain a solution B;
s3, uniformly and dropwise adding the solution B into the suspension A by using a separating funnel, and continuously stirring for 9-15min to uniformly mix the suspension A and the solution B to obtain a mixed solution containing melamine and ammonium molybdate;
s4, adding 3-10mL of hydrochloric acid with the concentration of 1mol/L into the mixed solution in the step S3 while stirring, adjusting the pH value to 4-6, and controlling the stirring time to be 25-40 min;
s5, adding 0-6mL of 7.4mg/mL chloroplatinic acid solution into the mixed solution after the pH is adjusted in the step S4, and then placing the mixed solution in a water area at 80 ℃ to be heated and stirred until the water is completely evaporated to obtain precursor powder;
s6, placing the precursor powder in the step S5 in a high-temperature tube furnace, heating the precursor powder from room temperature to 500 ℃ at the heating rate of 1-10 ℃/min under the nitrogen atmosphere, then preserving the heat for 30-180min, heating the precursor powder to 700-180 ℃ at the heating rate of 1-10 ℃/min, then preserving the heat for 30-180min, and then naturally cooling to obtain the electrocatalytic hydrogen evolution catalyst mPT-MoxCy@NC。
In detail, in the above technical solution, in step S1, the ratio of the melamine to the methanol added to the suspension a is 1-6 g: 100 and 300 mL.
In detail, in the above technical solution, in step S2, the ratio of the added amounts of ammonium molybdate and ethanol in the solution B is 1-4 mmol: 50-150 mL.
In detail, in the technical scheme, in the step S2, the concentration and the addition amount of the dilute hydrochloric acid are 1mol/L and 3-12mL respectively.
The invention also provides an electrocatalytic hydrogen evolution catalyst mPT-Mo with a core-shell structure prepared by the preparation methodxCy@NC。
The invention also provides the preparation method or the electrocatalytic hydrogen evolution catalyst mPT-Mo with the core-shell structurexCyApplication of @ NC in industrial electrocatalytic hydrogen production.
Compared with the prior art, the invention has the beneficial effects that:
(1) according to the invention, the core-shell structure material which takes molybdenum carbide as a core and platinum and nitrogen co-doped carbon layer as a shell is obtained by a simple synthesis method, the preparation process is simple, the purity of the target product is high, and mass synthesis can be realized;
(2) the core-shell structure material is used as an alkaline electro-catalytic hydrogen evolution catalyst, and the result shows that the alkaline electro-catalytic hydrogen evolution performance of the catalyst can be optimized by simply regulating and controlling the amount of the raw material in the pyrolysis precursor, wherein when the platinum content is 4%, the overpotential with the current density of 10mA/cm2 is only 90mV (vs. RHE), the cycling stability is good, and after 500 cycles, the good hydrogen evolution performance is still maintained;
(3) the invention combines the advantages of noble metal platinum and molybdenum carbide, skillfully designs and synthesizes a special core-shell structure, fully realizes the reduction of cost and the increase of active sites and realizes the improvement of the electrocatalytic hydrogen evolution performance;
(4) the synthetic method is simple, and the obtained material is easy to apply and beneficial to large-scale application and popularization.
Drawings
FIG. 1 shows the electrocatalytic hydrogen evolution catalyst mPT-Mo prepared in examples 1-4 of the present inventionxCyXRD spectra of @ NC;
FIG. 2 shows the electrocatalytic hydrogen evolution catalyst mPT-Mo prepared in example 3 of the present inventionxCySEM photograph of @ NC;
FIG. 3 shows the electrocatalytic hydrogen evolution catalyst mPT-Mo prepared in example 3 of the present inventionxCyTEM photograph of @ NC;
FIG. 4 shows the electrocatalytic hydrogen evolution catalyst mPT-Mo prepared in examples 1-4 of the present inventionxCyThe LSV and current density of @ NC are respectively 10mA/cm2、100mA/cm2A dotted line plot of the time-voltage distribution;
FIG. 5 is a LSV diagram of the electrocatalytic hydrogen evolution catalyst mPt-MoxCy @ NC prepared in example 3 of the present invention after different cycles.
Detailed Description
The present invention is further described in detail below with reference to specific examples so that those skilled in the art can more clearly understand the present invention.
All of the following examples are provided only for illustrating the present invention, but not for limiting the scope of the present invention.
All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative effort belong to the protection scope of the present invention.
Example 1
The embodiment of the invention provides a preparation method of an electrocatalytic hydrogen evolution catalyst with a core-shell structure, which specifically comprises the following steps:
(1) adding 100mL of methanol into a 500mL beaker, weighing 2g of melamine to dissolve the melamine in the methanol, and performing ultrasonic treatment for 30 minutes to form uniform suspension, which is marked as solution A;
(2) adding 75mL of ethanol solution into another 250mL beaker, and weighing 2.4mmol of ammonium molybdate to dissolve in the ethanol solution, and marking as solution B;
(3) slowly dripping about 6mL of dilute hydrochloric acid with the concentration of 1mol/L into the solution B in the step 2, and ultrasonically stirring until ammonium molybdate is completely dissolved;
(4) and (3) uniformly dropwise adding the solution B in the step (3) into the solution A in the step (1) by using a separating funnel, and continuously stirring for 10 minutes to uniformly mix the solution A and the solution B.
(5) Dripping about 5mL of 1mol/L dilute hydrochloric acid into the mixed solution obtained in the step 4, continuously stirring for 30 minutes, adjusting the pH value of the solution to be 6, placing the obtained solution in a water bath kettle at 80 ℃, heating and stirring until the water is completely evaporated to obtain MoxA pyrolysis precursor of Cy @ NC;
(6) putting the powder precursor obtained in the step (5) into a tube furnace, heating to 500 ℃ at a heating rate of 5 ℃ for 2h in a nitrogen atmosphere, then heating to 800 ℃ at the same heating rate, and keeping the temperature for 2h again, wherein the flow rate of nitrogen gas flow is kept at about 80mL/min in the process, and naturally cooling to room temperature to obtain the nitrogen-doped carbon-coated molybdenum carbide hydrogen evolution electrocatalyst marked as MoxCy@NC。
Example 2
The embodiment of the invention provides a preparation method of an electrocatalytic hydrogen evolution catalyst with a core-shell structure, which specifically comprises the following steps:
(1) adding 100mL of methanol into a 500mL beaker, weighing 2g of melamine to dissolve the melamine in the methanol, and performing ultrasonic treatment for 30 minutes to form uniform suspension, which is marked as solution A;
(2) adding 75mL of ethanol solution into another 250mL beaker, and weighing 2.4mmol of ammonium molybdate to dissolve in the ethanol solution, and marking as solution B;
(3) slowly dripping about 6mL of dilute hydrochloric acid with the concentration of 1mol/L into the solution B in the step 2, and ultrasonically stirring until ammonium molybdate is completely dissolved;
(4) uniformly dropwise adding the solution B in the step 3 into the solution A in the step 1 by using a separating funnel, and continuously stirring for 10 minutes to uniformly mix the solution A and the solution B;
(5) dripping about 5mL of dilute hydrochloric acid with the concentration of 1mol/L into the mixed solution obtained in the step 4, continuously stirring for 30 minutes, and adjusting the pH value of the solution to be 6;
(6) to the solution in step 5 was added 0.5mL of a solution of chloroplatinic acid at a concentration of 7.4 mg/mL. Heating and stirring the obtained solution in a water bath kettle at 80 deg.C until water is completely evaporated to obtain 1% Pt-MoxCyA pyrolysis precursor of @ NC;
(7) and (3) putting the powder precursor obtained in the step (6) into a tube furnace, heating to 500 ℃ at a heating rate of 5 ℃ for 2h in a nitrogen atmosphere, then heating to 800 ℃ at the same heating rate, keeping the temperature for 2h again, keeping the flow rate of nitrogen gas flow at about 80mL/min in the process, and naturally cooling to room temperature. To obtain the nitrogen dopedThe heterocarbon-coated molybdenum carbide hydrogen evolution electrocatalyst is marked as 1 percent of Pt-MoxCy@NC。
Example 3
The embodiment of the invention provides a preparation method of an electrocatalytic hydrogen evolution catalyst with a core-shell structure, which specifically comprises the following steps:
(1) adding 100mL of methanol into a 500mL beaker, weighing 2g of melamine to dissolve the melamine in the methanol, and performing ultrasonic treatment for 30 minutes to form uniform suspension, which is marked as solution A;
(2) adding 75mL of ethanol solution into another 250mL beaker, and weighing 2.4mmol of ammonium molybdate to dissolve in the ethanol solution, and marking as solution B;
(3) slowly dripping about 6mL of dilute hydrochloric acid with the concentration of 1mol/L into the solution B in the step 2, and ultrasonically stirring until ammonium molybdate is completely dissolved;
(4) uniformly dropwise adding the solution B in the step 3 into the solution A in the step 1 by using a separating funnel, and continuously stirring for 10 minutes to uniformly mix the solution A and the solution B;
(5) dripping about 5mL of dilute hydrochloric acid with the concentration of 1mol/L into the mixed solution obtained in the step 4, continuously stirring for 30 minutes, and adjusting the pH value of the solution to be 6;
(6) to the solution in step 5 was added 2mL of a solution of chloroplatinic acid at a concentration of 7.4 mg/mL. Heating and stirring the obtained solution in a water bath kettle at 80 deg.C until water is completely evaporated to obtain 4% Pt-MoxCyA pyrolysis precursor of @ NC;
(7) and (3) putting the powder precursor obtained in the step (6) into a tube furnace, heating to 500 ℃ at a heating rate of 5 ℃ for 2h in a nitrogen atmosphere, then heating to 800 ℃ at the same heating rate, keeping the temperature for 2h again, keeping the flow rate of nitrogen gas flow at about 80mL/min in the process, and naturally cooling to room temperature. The nitrogen-doped carbon-coated molybdenum carbide hydrogen evolution electrocatalyst is obtained and marked as 4 percent Pt-MoxCy@NC。
Example 4
The embodiment of the invention provides a preparation method of an electrocatalytic hydrogen evolution catalyst with a core-shell structure, which specifically comprises the following steps:
(1) adding 100mL of methanol into a 500mL beaker, weighing 2g of melamine to dissolve the melamine in the methanol, and performing ultrasonic treatment for 30 minutes to form uniform suspension, which is marked as solution A;
(2) adding 75mL of ethanol solution into another 250mL beaker, and weighing 2.4mmol of ammonium molybdate to dissolve in the ethanol solution, and marking as solution B;
(3) slowly dripping about 6mL of dilute hydrochloric acid with the concentration of 1mol/L into the solution B in the step 2, and ultrasonically stirring until ammonium molybdate is completely dissolved;
(4) uniformly dropwise adding the solution B in the step 3 into the solution A in the step 1 by using a separating funnel, and continuously stirring for 10 minutes to uniformly mix the solution A and the solution B;
(5) dripping about 5mL of dilute hydrochloric acid with the concentration of 1mol/L into the mixed solution obtained in the step 4, continuously stirring for 30 minutes, and adjusting the pH value of the solution to be 6;
(6) to the solution in step 5 was added 3mL of a solution of chloroplatinic acid at a concentration of 7.4 mg/mL. Heating and stirring the obtained solution in a water bath kettle at 80 deg.C until water is completely evaporated to obtain 6% Pt-MoxCyA pyrolysis precursor of @ NC;
(7) and (3) putting the powder precursor obtained in the step (6) into a tube furnace, heating to 500 ℃ at a heating rate of 5 ℃ for 2h in a nitrogen atmosphere, then heating to 800 ℃ at the same heating rate, keeping the temperature for 2h again, keeping the flow rate of nitrogen gas flow at about 80mL/min in the process, and naturally cooling to room temperature. The nitrogen-doped carbon-coated molybdenum carbide hydrogen evolution electrocatalyst is obtained and marked as 6 percent Pt-MoxCy@NC。
FIG. 1 shows that the electrocatalytic hydrogen evolution catalyst mPT-Mo prepared in the examples 1-4 of the present inventionxCyXRD spectrum of @ NC.
As can be seen from the figure, the series mPT-Mo producedxCyIn the catalyst for electrocatalytic hydrogen evolution of @ NC, the molybdenum carbide core contains MoC and Mo2C two crystalline phases, the characteristic peak of metallic platinum became increasingly evident with increasing platinum content, indicating successful incorporation of platinum.
FIG. 2 shows 4% Pt-Mo of the electro-catalytic hydrogen evolution catalyst prepared in example 3 of the present inventionxCySEM photograph of @ NC.
As can be seen from the figure, the electro-catalytic hydrogen evolution catalyst is 4% Pt-MoxCy@ NC exhibits a pleated sheet-like structure.
FIG. 3 shows the electrocatalytic hydrogen evolution catalyst mPT-Mo prepared in example 3 of the present inventionxCvTEM micrograph of @ NC (at different magnifications).
As can be seen from the figure, the nano-platelet structure is very clear and the molybdenum carbide particles are uniformly distributed in the platelet nitrogen-doped carbon layer. In the high resolution image, it can be clearly observed that the molybdenum carbide particles are coated by the carbon layer, and no obvious metal platinum particles exist, further proving that the composite material is in a core-shell structure, wherein the molybdenum carbide is used as a core and the nitrogen-doped carbon layer is used as a shell. It is further assumed that the metal platinum is not present in the form of a simple substance, and may be doped in the carbon layer in coordination with nitrogen (Pt — Nx).
FIG. 4 shows the electrocatalytic hydrogen evolution catalyst mPT-Mo prepared in examples 1-4 of the present inventionxCyThe LSV and current density of @ NC are respectively 10mA/cm2、100mA/cm2Dotted line plot of the voltage distribution.
As can be seen from the figure, when platinum is introduced, the electrocatalytic performance of the material is improved; when the platinum doping amount is increased to 4%, the material shows better performance, and the current density is 10mA/cm2The overpotential of (a) is only 90mV (vs. RHE).
FIG. 5 shows the electrocatalytic hydrogen evolution catalyst mPT-Mo prepared in example 3 of the present inventionxCy@ NC LSV graph after different number of cycles.
As can be seen from the figure, after 500 cycle tests, the electro-catalytic hydrogen evolution catalyst has 4 percent of Pt-MoxCyThe performance of @ NC is basically unchanged, which shows that the material has better cycling stability.
In conclusion, the invention designs and synthesizes the electrocatalyst with a typical core-shell structure by taking molybdenum carbide as an inner core and nitrogen-doped carbon as a protective shell layer, and in order to improve the catalytic performance, noble metal platinum is introduced into the nitrogen-doped carbon layer in a single-atom form to form a platinum active site and improve the hydrogen evolution performance of the catalyst; finally, in a strong alkaline electrolyte, through electrochemical test of a three-electrode system, bubbles can be observed to be generated at the cathode and the anode, and the designed core-shell structure material is verified to have high-efficiency catalytic action on electrocatalytic hydrogen production.
Finally, the method of the present invention is only a preferred embodiment and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A preparation method of an electrocatalytic hydrogen evolution catalyst with a core-shell structure is characterized in that,
the method comprises the following steps:
adjusting the pH value of the mixed solution containing melamine and a molybdenum source to acidity, stirring and heating until the water is completely evaporated to obtain precursor powder, and then annealing the precursor powder at high temperature in a nitrogen atmosphere to obtain the catalyst.
2. The preparation method of the electrocatalytic hydrogen evolution catalyst with the core-shell structure according to claim 1, characterized in that,
and before heating to evaporate water, dropwise adding a chloroplatinic acid solution into the mixed solution after the pH is adjusted to 4-6.
3. The preparation method of the electrocatalytic hydrogen evolution catalyst with the core-shell structure according to claim 1 or 2, characterized in that,
the high-temperature annealing comprises the steps of preserving heat for 30-180min at 480-525 ℃ and then preserving heat for 30-180min at 700-1000 ℃.
4. The preparation method of the electrocatalytic hydrogen evolution catalyst with the core-shell structure according to claim 3, characterized in that,
the high-temperature annealing is specifically carried out by heating from room temperature to 480-525 ℃ at the heating rate of 1-10 ℃/min, then carrying out heat preservation for 30-180min, then heating to 700-1000 ℃ at the heating rate of 1-10 ℃/min, then carrying out heat preservation for 30-180min, and then carrying out natural cooling;
and/or controlling the flow rate of the nitrogen gas to be 30-100mL/min in the high-temperature annealing process.
5. The preparation method of the electrocatalytic hydrogen evolution catalyst with the core-shell structure according to any one of claims 1 to 4, characterized in that,
the method specifically comprises the following steps:
s1, weighing melamine, adding the melamine into methanol, and carrying out ultrasonic treatment for 20-45min to obtain a uniform suspension A;
s2, weighing ammonium molybdate, adding the ammonium molybdate into ethanol, stirring, dropwise adding dilute hydrochloric acid, and ultrasonically mixing until the ammonium molybdate is completely dissolved to obtain a solution B;
s3, uniformly and dropwise adding the solution B into the suspension A by using a separating funnel, and continuously stirring for 9-15min to uniformly mix the suspension A and the solution B to obtain a mixed solution containing melamine and ammonium molybdate;
s4, adding 3-10mL of hydrochloric acid with the concentration of 1mol/L into the mixed solution in the step S3 while stirring, adjusting the pH value to 4-6, and controlling the stirring time to be 25-40 min;
s5, adding 0-6mL of 7.4mg/mL chloroplatinic acid solution into the mixed solution after the pH is adjusted in the step S4, and then placing the mixed solution in a water area at 80 ℃ to be heated and stirred until the water is completely evaporated to obtain precursor powder;
s6, placing the precursor powder in the step S5 in a high-temperature tube furnace, heating the precursor powder from room temperature to 500 ℃ at the heating rate of 1-10 ℃/min under the nitrogen atmosphere, then preserving the heat for 30-180min, heating the precursor powder to 700-180 ℃ at the heating rate of 1-10 ℃/min, then preserving the heat for 30-180min, and then naturally cooling to obtain the electrocatalytic hydrogen evolution catalyst mPT-MoxCy@NC。
6. The preparation method of the electrocatalytic hydrogen evolution catalyst with the core-shell structure according to claim 5, characterized in that,
in step S1, the ratio of the melamine to the methanol added to the suspension A is 1-6 g: 100-300 mL.
7. The preparation method of the electrocatalytic hydrogen evolution catalyst with the core-shell structure according to claim 5, characterized in that,
in the step S2, in the step S,
the adding amount ratio of ammonium molybdate to ethanol in the solution B is 1-4 mmol: 50-150 mL;
and/or the concentration and the addition amount of the dilute hydrochloric acid are 1mol/L and 3-12mL respectively.
8. Electrocatalytic hydrogen evolution catalyst mPT-Mo with core-shell structure prepared by the preparation method of any one of claims 1-7xCy@NC。
9. Preparation method according to any one of claims 1 to 7 or electrocatalytic hydrogen evolution catalyst mPT-Mo of core-shell structure according to claim 8xCyApplication of @ NC in industrial electrocatalytic hydrogen production.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115044927A (en) * | 2022-06-18 | 2022-09-13 | 福州大学 | Preparation method and application of carbide-supported metal catalyst |
| RU2813184C1 (en) * | 2022-12-29 | 2024-02-07 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Российский химико-технологический университет имени Д.И. Менделеева" (РХТУ им. Д.И. Менделеева) | Method for preparing catalyst electrode for electrochemical hydrogen production |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111282588A (en) * | 2018-12-09 | 2020-06-16 | 中国科学院大连化学物理研究所 | Catalyst for hydrogen evolution by electrolyzing water and preparation method and application thereof |
| CN113529102A (en) * | 2021-07-15 | 2021-10-22 | 广东工业大学 | Metal and nitrogen co-doped molybdenum carbide catalyst and preparation method and application thereof |
-
2021
- 2021-12-22 CN CN202111567629.0A patent/CN114277397A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111282588A (en) * | 2018-12-09 | 2020-06-16 | 中国科学院大连化学物理研究所 | Catalyst for hydrogen evolution by electrolyzing water and preparation method and application thereof |
| CN113529102A (en) * | 2021-07-15 | 2021-10-22 | 广东工业大学 | Metal and nitrogen co-doped molybdenum carbide catalyst and preparation method and application thereof |
Non-Patent Citations (3)
| Title |
|---|
| JING-QI CHI ET AL.: "N‑Doped Sandwich-Structured Mo2C@C@Pt Interface with Ultralow Pt Loading for pH-Universal Hydrogen Evolution Reaction", 《ACS APPL. MATER. INTERFACES》 * |
| ZHENG LI ET AL: "Recent Progress in Low Pt Content Electrocatalysts for Hydrogen Evolution Reaction", 《ADV. MATER. INTERFACES》 * |
| 周燕强 等: "Pt/MoC 的制备及其在电解水析氢反应中的催化性能", 《精细化工》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115044927A (en) * | 2022-06-18 | 2022-09-13 | 福州大学 | Preparation method and application of carbide-supported metal catalyst |
| CN115044927B (en) * | 2022-06-18 | 2024-04-05 | 福州大学 | Preparation method and application of carbide supported metal catalyst |
| RU2813184C1 (en) * | 2022-12-29 | 2024-02-07 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Российский химико-технологический университет имени Д.И. Менделеева" (РХТУ им. Д.И. Менделеева) | Method for preparing catalyst electrode for electrochemical hydrogen production |
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