CN112376079A - Preparation method of bimetallic phosphide material for electrocatalytic hydrogen evolution - Google Patents
Preparation method of bimetallic phosphide material for electrocatalytic hydrogen evolution Download PDFInfo
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- 239000000463 material Substances 0.000 title claims abstract description 38
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 28
- 239000001257 hydrogen Substances 0.000 title claims abstract description 28
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 28
- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- WHDPTDWLEKQKKX-UHFFFAOYSA-N cobalt molybdenum Chemical group [Co].[Co].[Mo] WHDPTDWLEKQKKX-UHFFFAOYSA-N 0.000 claims abstract description 44
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims abstract description 21
- BNIILDVGGAEEIG-UHFFFAOYSA-L disodium hydrogen phosphate Chemical compound [Na+].[Na+].OP([O-])([O-])=O BNIILDVGGAEEIG-UHFFFAOYSA-L 0.000 claims abstract description 16
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 15
- 238000006243 chemical reaction Methods 0.000 claims abstract description 13
- 238000001556 precipitation Methods 0.000 claims abstract description 8
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims abstract description 6
- GFHNAMRJFCEERV-UHFFFAOYSA-L cobalt chloride hexahydrate Chemical compound O.O.O.O.O.O.[Cl-].[Cl-].[Co+2] GFHNAMRJFCEERV-UHFFFAOYSA-L 0.000 claims abstract description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical group [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical group O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 239000002904 solvent Substances 0.000 claims description 13
- 229910052573 porcelain Inorganic materials 0.000 claims description 12
- 239000008367 deionised water Substances 0.000 claims description 11
- 229910021641 deionized water Inorganic materials 0.000 claims description 11
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 10
- 150000001868 cobalt Chemical class 0.000 claims description 9
- MPUWNSFWYZQXLQ-UHFFFAOYSA-J [Mo](O)(O)(O)O.[Co] Chemical compound [Mo](O)(O)(O)O.[Co] MPUWNSFWYZQXLQ-UHFFFAOYSA-J 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 8
- 238000005406 washing Methods 0.000 claims description 8
- 150000002751 molybdenum Chemical class 0.000 claims description 7
- 239000012299 nitrogen atmosphere Substances 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000011144 upstream manufacturing Methods 0.000 claims description 6
- 239000003513 alkali Substances 0.000 claims description 5
- 238000000137 annealing Methods 0.000 claims description 5
- 230000003197 catalytic effect Effects 0.000 abstract description 4
- 239000002243 precursor Substances 0.000 abstract 2
- 239000002994 raw material Substances 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 10
- 239000003054 catalyst Substances 0.000 description 8
- 238000000840 electrochemical analysis Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 229910021607 Silver chloride Inorganic materials 0.000 description 4
- 239000003792 electrolyte Substances 0.000 description 4
- HKZLPVFGJNLROG-UHFFFAOYSA-M silver monochloride Chemical compound [Cl-].[Ag+] HKZLPVFGJNLROG-UHFFFAOYSA-M 0.000 description 4
- 239000013078 crystal Substances 0.000 description 3
- 238000005868 electrolysis reaction Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 2
- 238000002441 X-ray diffraction Methods 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 229910017052 cobalt Inorganic materials 0.000 description 2
- 239000010941 cobalt Substances 0.000 description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 2
- 229910052750 molybdenum Inorganic materials 0.000 description 2
- 239000011733 molybdenum Substances 0.000 description 2
- 229910000510 noble metal Inorganic materials 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000007809 chemical reaction catalyst Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 239000010411 electrocatalyst Substances 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000013112 stability test Methods 0.000 description 1
- 238000012430 stability testing Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
- C25B1/01—Products
- C25B1/02—Hydrogen or oxygen
- C25B1/04—Hydrogen or oxygen by electrolysis of water
-
- 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
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
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- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
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Abstract
The invention discloses a preparation method of a bimetallic phosphide material for electrocatalytic hydrogen evolution. Wherein the bimetallic phosphide is cobalt molybdenum phosphide. The preparation method provided by the invention adopts cobalt chloride hexahydrate and ammonium tetramolybdate as raw materials, obtains a cobalt-molybdenum double hydroxide precursor by a one-step precipitation method, and anneals the cobalt-molybdenum double hydroxide precursor and disodium hydrogen phosphate in nitrogen to obtain the cobalt-molybdenum phosphide material. The material has excellent catalytic activity and stability in electrocatalytic Hydrogen Evolution (HER) reaction at 10mA/cm2The overpotential at the current density of (a) is 116mV, and after 16 hours of electrocatalysis, the catalytic activity is still maintained above 90%. Meanwhile, the preparation method is simple, low in cost and has the potential of wide application.
Description
Technical Field
The invention relates to a preparation method of a bimetallic phosphide electrocatalytic material for electrocatalytic hydrogen evolution, belonging to the technical field of electrocatalysis.
Background
The excessive consumption of non-renewable energy sources and the consequent environmental pollution problems compel us to find and develop renewable clean energy sources that can replace non-renewable energy sources. Hydrogen energy is considered to be one of the most promising clean energy sources in the 21 st century, as a new clean, efficient, safe and sustainable energy source. The hydrogen production by water electrolysis is an effective way to solve the current dilemma. However, the hydrogen evolution reaction by electrolysis is difficult to occur under the conventional condition, and the hydrogen evolution reaction can be carried out only by overcoming a certain activation barrier with the aid of a catalyst, so that the overpotential of the water decomposition reaction is reduced by developing a high-activity hydrogen evolution reaction catalyst, and the energy conversion efficiency is improved. At present, HER catalysts are various, and the most effective electrocatalyst for high-efficiency hydrogen production is still mainly a rare and expensive noble metal-based material, which is not beneficial to large-scale industrial application. Therefore, there is an urgent need to develop a hydrogen evolution catalyst with low overpotential and low price to improve reaction kinetics and water electrolysis efficiency.
Disclosure of Invention
In order to solve the problems in the prior art, the invention aims to provide a preparation method and application of a bimetallic phosphide electrocatalytic material for electrocatalytic hydrogen evolution, which are used for solving the problem that the electrocatalytic hydrogen evolution material in the prior art has low activity in HER reaction.
The invention provides a preparation method of a bimetallic phosphide electrocatalytic material for electrocatalytic hydrogen evolution, which comprises the following steps:
preparing cobalt-molybdenum double hydroxide by a one-step precipitation method;
and annealing the cobalt-molybdenum double hydroxide and the disodium hydrogen phosphate in nitrogen to obtain the bimetal phosphide material.
Further, the preparation of the cobalt molybdenum double hydroxide by using the one-step precipitation method comprises the following steps:
dissolving soluble cobalt salt and soluble molybdenum salt in a solvent according to a certain molar ratio under a nitrogen atmosphere to obtain a solution I, wherein the solvent is deionized water;
stirring the solution I at normal temperature for 30min, slowly dropwise adding alkali liquor with a certain concentration until a certain PH value is reached, and stirring at a certain temperature for a period of time;
and after the reaction is finished, washing the product by using a solvent and drying to obtain the cobalt molybdenum hydroxide.
Further, annealing the cobalt molybdenum double hydroxide and disodium hydrogen phosphate in nitrogen to obtain the bimetal phosphide material, wherein the bimetal phosphide material comprises:
and (3) putting the cobalt-molybdenum double hydroxide into a porcelain cup, putting disodium hydrogen phosphate into another porcelain boat at the upstream of the horizontal tube furnace, and heating for 1-3 h at 350 ℃ in nitrogen to obtain the bimetallic phosphide.
Further, the cobalt salt is cobalt chloride hexahydrate, and the molybdenum salt is ammonium tetramolybdate.
Further, the cobalt salt: the molar ratio of the molybdenum salt is (1-10): (1-10). The volume mass ratio of the solvent to the cobalt salt is (60-120) mL: (0.237 to 2.37) g.
Further, the alkali liquor is sodium hydroxide solution; the PH value is 8-10;
further, the washing solvent is deionized water and ethanol; the drying temperature is 50-80 ℃.
Further, the mass of the cobalt-molybdenum double hydroxide is 10-20 mg; the mass of the disodium hydrogen phosphate is 100-200 mg.
Preferably, the cobalt molybdenum double hydroxide and the disodium hydrogen phosphate are heated in nitrogen for 2 hours.
A bimetallic phosphide electrocatalytic material for electrocatalytic hydrogen evolution is prepared by any one preparation method.
The invention has the following positive effects:
the invention is prepared by a simple one-step precipitation method, so that Co (OH)2And Mo (OH)2The nano particles are fully doped together and are phosphorized under the protection of nitrogen atmosphere to prepare the electrode material of the bimetallic phosphide, and the material has a sheet structure and is applied to electrocatalytic hydrogen evolution at 10mA/cm-2The overpotential under the current density of (2) is 116mV, and the electrocatalytic activity is good; after electrocatalysis for 16 hours, the catalytic activity is still maintained to be more than 90 percent. Compared with noble metal catalysts, the catalyst has the advantages of low price, simple manufacturing steps and great application prospect.
Drawings
FIG. 1 is an X-ray diffraction pattern of a cobalt molybdenum phosphide sample provided in example 2 of the present invention at a ratio of 5:6 of cobalt to molybdenum.
Figure 2 is a comparative graph of HER polarization curves for materials prepared by 3 examples provided by the present invention.
FIG. 3 is a comparison graph of Tafel slopes for materials prepared by 3 examples provided in the present invention.
FIG. 4 is a graph showing the stability test of a cobalt molybdenum phosphide sample having a ratio of cobalt to molybdenum of 5:6 according to example 2 of the present invention.
Detailed Description
The endpoints of the ranges and any values presented herein are not limited to the precise range or value.
The present invention will be described in detail below by way of examples of implementation. In the following examples, X-ray diffractometers were purchased from Dnah instruments Inc., of Dandong, and the model number is DX-2700; the electrochemical workstation is purchased from Shanghai Chenghua instruments Inc., and has the model number of CHI760 e; all reagents used were analytical reagents.
Preparation example 1
The preparation method is used for explaining a preparation method of the bimetallic phosphide electrocatalytic material for electrocatalytic hydrogen evolution, and comprises the following steps:
step 101, preparing cobalt molybdenum double hydroxide by using a one-step precipitation method;
and 102, annealing the cobalt-molybdenum double hydroxide and the disodium hydrogen phosphate in nitrogen to obtain the bimetal phosphide material.
Specifically, the step 101 of preparing cobalt molybdenum double hydroxide by using a one-step precipitation method comprises the following steps:
dissolving soluble cobalt salt and soluble molybdenum salt in a solvent according to a certain molar ratio under a nitrogen atmosphere to obtain a solution I, wherein the solvent is deionized water;
stirring the solution I at normal temperature for 30min, slowly dropwise adding alkali liquor with a certain concentration until a certain PH value is reached, and stirring at a certain temperature for a period of time;
and after the reaction is finished, washing and drying the product by using a solvent to obtain the cobalt-molybdenum double hydroxide.
Specifically, in step 102, annealing the cobalt molybdenum double hydroxide and disodium hydrogen phosphate in nitrogen to obtain the bimetal phosphide material comprises:
and putting the cobalt-molybdenum double hydroxide into a porcelain cup, putting disodium hydrogen phosphate into another porcelain boat at the upstream of the horizontal tube furnace, and heating for 1-3 hours at 350 ℃ in nitrogen to obtain the bimetallic phosphide material.
Example 1: preparation of cobalt-molybdenum phosphide with a cobalt-molybdenum ratio of 1:10
Under the nitrogen atmosphere, 0.237g of cobalt chloride hexahydrate and 1.754g of ammonium tetramolybdate are dispersed into 120ml of deionized water and stirred for 30 min;
slowly dropwise adding 0.05mol/L NaOH solution until the pH value is 9, and then keeping the obtained suspension under vigorous stirring at room temperature for more than 12 hours;
after the reaction is finished, washing and drying the product by using deionized water and ethanol to obtain cobalt-molybdenum double hydroxide;
and (3) putting the obtained 20mg of cobalt-molybdenum double hydroxide into a porcelain cup, putting 100mg of disodium hydrogen phosphate into another porcelain cup at the upstream of the horizontal tube furnace, and keeping the material at 350 ℃ for 2 hours under nitrogen flow at a heating speed of 2 ℃/min to obtain the cobalt-molybdenum phosphide with the cobalt-molybdenum ratio of 1: 10.
Example 2: preparation of cobalt-molybdenum phosphide with a cobalt-molybdenum ratio of 1:10
(1) Under the nitrogen atmosphere, 1.185g of cobalt chloride hexahydrate and 1.176g of ammonium tetramolybdate are dispersed into 120ml of deionized water and stirred for 30 min;
(2) slowly dropwise adding 0.05mol/L NaOH solution until the pH value is 9, and then keeping the obtained suspension under vigorous stirring at room temperature for more than 12 hours;
(3) after the reaction is finished, washing and drying the product by using deionized water and ethanol to obtain cobalt-molybdenum double hydroxide;
(4) and (3) putting 20mg of cobalt molybdenum hydroxide obtained in the step (3) into a porcelain cup, putting 100mg of disodium hydrogen phosphate into another porcelain cup at the upstream of the horizontal tube furnace, and keeping the material at 350 ℃ for 2 hours under nitrogen flow at a heating speed of 2 ℃/min to obtain the cobalt molybdenum phosphide with the cobalt molybdenum ratio of 5: 6.
Example 3: preparation of cobalt-molybdenum phosphide with a cobalt-molybdenum ratio of 10:1
(1) Dispersing 2.37g of cobalt chloride hexahydrate and 0.196g of ammonium tetramolybdate into 120ml of deionized water under a nitrogen atmosphere, and stirring for 30 min;
(2) slowly dropwise adding 0.05mol/L NaOH solution until the pH value is 9, and then keeping the obtained suspension under vigorous stirring at room temperature for more than 12 hours;
(3) after the reaction is finished, washing and drying the product by using deionized water and ethanol to obtain cobalt-molybdenum double hydroxide;
(4) and (3) putting 20mg of cobalt molybdenum hydroxide obtained in the step (3) into a porcelain cup, putting 100mg of disodium hydrogen phosphate into another porcelain cup at the upstream of the horizontal tube furnace, and keeping the material at 350 ℃ for 2 hours under nitrogen flow at a heating speed of 2 ℃/min to obtain the cobalt molybdenum phosphide with the cobalt molybdenum ratio of 10: 1.
Test example 1
This test serves to illustrate the crystal structure of the bimetallic phosphide of the present invention.
FIG. 1 is an X-ray diffraction pattern of a cobalt molybdenum phosphide sample provided in example 2 with a cobalt molybdenum ratio of 5: 6. The diffraction peaks corresponded well to the (011), (111), (211) and (301) crystal planes of standard JCPDS card numbers 29-0497 for CoP, and (001), (100), (110) and (201) crystal planes of standard JCPDS card numbers 24-0771 for MoP.
Test example 2
This test is intended to illustrate the performance of the bimetallic phosphide material of the present invention in electrocatalytic hydrogen evolution.
The electrochemical test adopts a three-electrode system, and the electrochemical test is carried out by a CHI760e electrochemical analyzer workstation, wherein the GCE loaded with the catalyst is used as a working electrode, a carbon rod electrode is used as a counter electrode, and a silver/silver chloride electrode (Ag/AgCl) is used as a reference electrode. Electrochemical test electrolyte is 1mol/L H2SO4And (4) introducing nitrogen into the solution for 10min before testing to remove air in the electrolyte.
As can be seen from the figure, the current density gradually increases with the increase of the voltage, and the current density of the invention in the embodiments 1, 2 and 3 is 10mA/cm-2The overpotential at the current density of (a) is 137 mV, 116mV and 126mV, respectively. The cobalt molybdenum phosphide provided in example 2 of the invention has the lowest required voltage of 5:6 cobalt molybdenum phosphide, i.e. the material has the strongest activity in the HER reaction.
Test example 3
This test is used to illustrate the tafel slope of the bimetallic phosphide material of the present invention. The slope of the graph represents the catalytic kinetics of the material, with lower slopes favoring more gas generation at a certain overpotential.
It can be seen from the figure that the tafel slope corresponding to the cobalt-molybdenum phosphide with the ratio of 5:6 provided in example 2 of the invention is the lowest, i.e. the material has better activity when used as a catalyst.
Test example 4
This test is used to illustrate the stability of cobalt molybdenum phosphide provided in example 2 of the present invention at a ratio of 5:6 cobalt molybdenum phosphide.
The electrochemical test adopts a three-electrode system, and the electrochemical test is carried out by a CHI760e electrochemical analyzer workstation, wherein the GCE loaded with the catalyst is used as a working electrode, a carbon rod electrode is used as a counter electrode, and a silver/silver chloride electrode (Ag/AgCl) is used as a reference electrode. Electrochemical test electrolyte is 1mol/L H2SO4And (3) introducing nitrogen into the solution for 10min before testing to remove air in the electrolyte, and keeping constant voltage of-370 mV in stability testing.
As can be seen from the figure, the material stability is good, the current density is reduced by no more than 5% within 16h under the constant voltage of-370 mV, and the structure is stable and is not easy to collapse.
Claims (10)
1. A method for preparing a bimetallic phosphide material for electrocatalytic hydrogen evolution, characterized in that it comprises:
preparing cobalt-molybdenum double hydroxide by a one-step precipitation method;
and annealing the cobalt-molybdenum double hydroxide and the disodium hydrogen phosphate in nitrogen to obtain the bimetal phosphide material.
2. The method for preparing the bimetallic phosphide material for electrocatalytic hydrogen evolution according to claim 1, wherein the one-step precipitation method for preparing the cobalt molybdenum hydroxide comprises the following steps:
dissolving soluble cobalt salt and soluble molybdenum salt in a solvent according to a certain molar ratio under a nitrogen atmosphere to obtain a solution I, wherein the solvent is deionized water;
stirring the solution I at normal temperature for 30min, slowly dropwise adding alkali liquor with a certain concentration until a certain pH value is reached, and stirring at a certain temperature for a period of time;
and after the reaction is finished, washing the product by using a solvent and drying to obtain the cobalt molybdenum hydroxide.
3. The preparation method of the bimetallic phosphide material for electrocatalytic hydrogen evolution as claimed in claim 1, wherein the bimetallic phosphide is obtained by putting the cobalt molybdenum hydroxide into a porcelain cup, putting the disodium hydrogen phosphate into another porcelain boat at the upstream of a horizontal tube furnace, and heating for 1-3 h at 350 ℃ in nitrogen.
4. The method of claim 2, wherein the cobalt salt is cobalt chloride hexahydrate and the molybdenum salt is ammonium tetramolybdate.
5. The method for preparing a bimetallic phosphide material for electrocatalytic hydrogen evolution according to claim 2, characterized in that the ratio of cobalt salt: the molar ratio of the molybdenum salt is (1-10): (1-10);
the volume mass ratio of the solvent to the cobalt salt is (60-120) mL: (0.237 to 2.37) g.
6. The method for preparing the bimetallic phosphide material for electrocatalytic hydrogen evolution as set forth in claim 2, wherein the alkali liquor is a sodium hydroxide solution; the PH value is 8-10.
7. The method for preparing the bimetallic phosphide material for electrocatalytic hydrogen evolution as claimed in claim 2, wherein the washing solvent is deionized water, ethanol; the drying temperature is 50-80 ℃.
8. The preparation method of the bimetallic phosphide material for electrocatalytic hydrogen evolution as claimed in claim 3, wherein the mass of the cobalt molybdenum hydroxide is 10-20 mg; the mass of the disodium hydrogen phosphate is 100-200 mg.
9. The method of claim 3, wherein the cobalt molybdenum hydroxide and disodium hydrogen phosphate are heated in nitrogen for 2 h.
10. A bimetallic phosphide material for electrocatalytic hydrogen evolution is characterized by being prepared by the preparation method of the bimetallic phosphide for electrocatalytic hydrogen evolution according to any one of claims 1 to 8.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113846350A (en) * | 2021-10-09 | 2021-12-28 | 黑龙江大学 | Transition metal phosphide composite material for acidic electrolyzed water oxygen evolution and preparation method thereof |
| CN114032577A (en) * | 2021-11-24 | 2022-02-11 | 长春工业大学 | Preparation method of flexible sheet MoPCoP array electrolytic water catalyst composite material |
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2020
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113846350A (en) * | 2021-10-09 | 2021-12-28 | 黑龙江大学 | Transition metal phosphide composite material for acidic electrolyzed water oxygen evolution and preparation method thereof |
| CN114032577A (en) * | 2021-11-24 | 2022-02-11 | 长春工业大学 | Preparation method of flexible sheet MoPCoP array electrolytic water catalyst composite material |
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Application publication date: 20210219 |