CN114411195B - Nickel-manganese selenide heterojunction electrocatalyst and preparation method and application thereof - Google Patents

Nickel-manganese selenide heterojunction electrocatalyst and preparation method and application thereof Download PDF

Info

Publication number
CN114411195B
CN114411195B CN202210032249.5A CN202210032249A CN114411195B CN 114411195 B CN114411195 B CN 114411195B CN 202210032249 A CN202210032249 A CN 202210032249A CN 114411195 B CN114411195 B CN 114411195B
Authority
CN
China
Prior art keywords
nickel
manganese
electrocatalyst
carbon cloth
tube furnace
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.)
Active
Application number
CN202210032249.5A
Other languages
Chinese (zh)
Other versions
CN114411195A (en
Inventor
彭祥
李�荣
赖思帆
徐炎武
赵贵明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhan Institute of Technology
Original Assignee
Wuhan Institute of Technology
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Wuhan Institute of Technology filed Critical Wuhan Institute of Technology
Priority to CN202210032249.5A priority Critical patent/CN114411195B/en
Publication of CN114411195A publication Critical patent/CN114411195A/en
Application granted granted Critical
Publication of CN114411195B publication Critical patent/CN114411195B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • C25B11/00—Electrodes; Manufacture thereof not otherwise provided for
    • C25B11/04—Electrodes; Manufacture thereof not otherwise provided for characterised by the material
    • C25B11/051—Electrodes formed of electrocatalysts on a substrate or carrier
    • C25B11/073—Electrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalyst material
    • C25B11/091—Electrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalyst material consisting of at least one catalytic element and at least one catalytic compound; consisting of two or more catalytic elements or catalytic compounds
    • 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

Abstract

The invention relates to a nickel manganese selenide heterojunction electrocatalyst and a preparation method and application thereof, wherein the preparation method of the electrocatalyst is as follows: 1) The nickel salt is treated withDissolving manganese salt in deionized water, adding potassium persulfate, immersing the carbon cloth with clean surface into the obtained mixed solution, dripping in a weak alkaline solution, and growing on the carbon cloth to obtain layered nickel-manganese hydroxide nano-sheets; 2) Calcining the carbon cloth for the first time to obtain a precursor nickel manganese oxide; 3) Arranging carbon at the downstream of the tubular furnace, arranging selenium powder at the upstream of the tubular furnace, and performing secondary calcination to obtain the nickel-manganese selenide heterojunction electrocatalyst. The nickel-manganese selenide heterojunction electrocatalyst provided by the invention has excellent electrochemical activity, and HER reaches 10mA cm ‑2 Only an overpotential of 158mV is required for the current density of (2), the OER reaches 50mAcm ‑2 Only 422mV overpotential is needed, the water electrolysis efficiency is high, and the circulation stability is good.

Description

Nickel-manganese selenide heterojunction electrocatalyst and preparation method and application thereof
Technical Field
The invention belongs to the technical field of production of hydrogen or hydrogen-containing mixed gas, and particularly relates to a nickel-manganese selenide heterojunction electrocatalyst, and a preparation method and application thereof.
Background
The electrolysis of water to produce hydrogen has been a mainstream green hydrogen production method due to the technology maturity of simple technology, and has been receiving a great deal of attention in recent years. The Hydrogen Evolution Reaction (HER) at the cathode and the Oxygen Evolution Reaction (OER) at the anode play an important role in the conversion of water to hydrogen. The over-potential required by the reaction can be effectively reduced through the action of the electrocatalyst, so that the hydrogen production efficiency is improved. The common catalysts of HER and OER consist of noble metals such as platinum, iridium, ruthenium and alloys and compounds thereof, but the high cost and natural scarcity prevent the wide application of the common catalysts, and in recent years, with the development of the electrocatalytic field, the occurrence of transition metal chalcogenides, nitrides, carbides and phosphides brings new opportunities for the field, but the existing electrocatalytic catalysts still have the problems of low catalytic activity, poor stability, short service life and the like, and prevent the development of hydrogen production by water electrolysis.
Disclosure of Invention
Aiming at the defects in the prior art, the technical problem to be solved by the invention is to provide the nickel-manganese selenide heterojunction electrocatalyst, and the preparation method and the application thereof.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
the preparation method of the nickel manganese selenide heterojunction electrocatalyst comprises the following specific steps:
1) Dissolving nickel salt and manganese salt in deionized water, adding potassium persulfate to obtain a mixed solution, immersing the carbon cloth with clean surface in the obtained mixed solution, dripping a weak alkaline solution into the mixed solution while stirring, standing for 20-30 min after dripping, and growing on the carbon cloth to obtain layered nickel-manganese hydroxide nano sheets;
2) Placing the carbon cloth with the layered nickel-manganese hydroxide nano-sheets grown on the surface of the step 1) in a porcelain boat, placing the porcelain boat in a tube furnace for first calcination, and obtaining a precursor nickel-manganese oxide on the surface of the carbon cloth;
3) Arranging carbon coated with precursor nickel manganese oxide on the surface of the step 2) at the downstream of a tube furnace, arranging selenium powder at the upstream of the tube furnace, setting different temperatures at the upstream and the downstream, introducing hydrogen, flowing the hydrogen from the upstream of the tube furnace to the downstream, and performing secondary calcination to obtain the nickel manganese selenide heterojunction electrocatalyst.
According to the scheme, the nickel salt in the step 1) is one of nickel nitrate, nickel chloride, nickel phosphide, nickel bromide and nickel sulfate.
According to the scheme, the manganese salt in the step 1) is one of manganese sulfate, manganese nitrate, manganese acetate and manganese chloride; the molar ratio of the nickel salt to the manganese salt is 1:1 to 4.
According to the scheme, the concentration of potassium persulfate in the mixed solution in the step 1) is 0.005-0.015 mol/L. Potassium persulfate is used as a hydrothermal auxiliary agent to promote the growth of nickel-manganese hydroxide on the carbon cloth.
According to the scheme, the concentration of nickel ions in the mixed solution in the step 1) is 0.2-0.3 mol/L, and the concentration of manganese ions is 0.2-1.2 mol/L.
According to the scheme, the weakly alkaline solution in the step 1) is one of ammonia water solution, sodium bicarbonate solution and potassium bicarbonate solution, the pH value of the weakly alkaline solution is 7-10, and the volume ratio of the weakly alkaline solution to the mixed solution is 0.01-0.03:1. the alkalescent solution provides hydroxide radical to make the surface of the carbon cloth generate nickel-manganese hydroxide.
According to the scheme, the first calcination process conditions in the step 2) are as follows: heating to 200-600 ℃ at room temperature at a heating rate of 3-8 ℃/min, and preserving heat for 20-30 min.
According to the scheme, the mass ratio of the selenium powder to the carbon cloth coated with the precursor nickel-manganese oxide on the surface in the step 3) is 1:1 to 2.
According to the scheme, in the step 3), in the second calcination process, the upstream temperature of the tube furnace is 300-400 ℃, the downstream temperature is 400-500 ℃, and the calcination time is 1-3 h.
The invention also comprises a preparation method of the nickel manganese selenide heterojunction electrocatalyst, which comprises the following specific steps:
4) Dissolving nickel salt and manganese salt in deionized water, adding potassium persulfate to obtain a mixed solution, immersing the carbon cloth with clean surface in the obtained mixed solution, dripping a weak alkaline solution into the mixed solution while stirring, standing for 20-30 min after dripping, and growing on the carbon cloth to obtain layered nickel-manganese hydroxide nano sheets;
5) Placing the carbon cloth with the layered nickel-manganese hydroxide nano-sheets grown on the surface of the step 1) in a porcelain boat, placing the porcelain boat in a tube furnace for first calcination, and obtaining a precursor nickel-manganese oxide on the surface of the carbon cloth;
6) Arranging carbon coated with precursor nickel manganese oxide on the surface of the step 2) at the downstream of a tube furnace, arranging selenium powder at the upstream of the tube furnace, setting different temperatures at the upstream and the downstream, introducing hydrogen, flowing the hydrogen from the upstream of the tube furnace to the downstream, and performing secondary calcination to obtain the nickel manganese selenide heterojunction electrocatalyst.
The invention also comprises application of the nickel-manganese selenide heterojunction electrocatalyst in hydrogen production by water electrolysis.
The nickel-manganese selenide heterojunction electrocatalyst provided by the invention has a two-dimensional layered structure, a stable structure and a wide electronic regulation range of selenium element, the selenium-based heterostructure has better catalytic performance in hydrogen evolution and oxygen evolution, and meanwhile, the heterostructure in the material increases the degree of lattice distortion, so that the catalytic activity is enhanced, the heterostructure material has a plurality of active sites and uniform component distribution, and the advantages of the invention endow the material with better electrolytic water catalytic performance.
The invention has the beneficial effects that: 1. the nickel-manganese selenide heterojunction electrocatalyst provided by the invention has excellent electrochemical activity, and HER reaches 10mA cm -2 Only an overpotential of 158mV is required for the current density of (2), the OER reaches 50mAcm -2 Only 422mV overpotential is needed, the water electrolysis efficiency is high, and the circulation stability is good. 2. The preparation method has the advantages of less process steps, lower calcining temperature, less energy consumption and low cost.
Drawings
FIG. 1 is an XRD pattern of a nickel manganese selenide heterojunction electrocatalyst prepared in example 1 of the invention;
FIG. 2 is a graph of OER performance test of the nickel manganese selenide heterojunction electrocatalyst prepared in example 1 and nickel manganese oxide precursor before diselenide in 1M KOH;
fig. 3 is a graph of HER performance testing of the nickel manganese selenide heterojunction electrocatalyst prepared in example 1 in 1M KOH.
Detailed Description
The present invention will be described in further detail below with reference to the accompanying drawings, so that those skilled in the art can better understand the technical scheme of the present invention.
Example 1
The preparation method of the nickel manganese selenide heterojunction electrocatalyst comprises the following specific steps:
dissolving 0.08mol of nickel chloride, 0.08mol of manganese nitrate and 0.003mol of potassium persulfate in 300mL of deionized water, stirring for 10min to obtain a mixed solution, and stirring for 9cm 2 Adding carbon cloth (prepared by ultrasonic treatment in deionized water to remove surface oil and impurities), stirring for 3min, dropwise adding 4mL ammonia water solution with pH value of 8 at 15deg.C, standing for 20min, taking out, drying, placing into a tube furnace, heating to 300deg.C at a heating rate of 5deg.C/min, and maintaining for 30min to obtain nickel-manganese oxide layered nanosheet coated carbonCloth (500 mg), washing the prepared nickel-manganese oxide layered nano-sheet coated carbon cloth with deionized water and alcohol for 3-5 times, putting the washed carbon cloth into a blast drying oven at 60 ℃ for drying, then putting the dried carbon cloth into a double-temperature-zone tubular furnace at the downstream, putting 400mg of selenium powder into the upstream of the tubular furnace, introducing hydrogen, flowing the hydrogen from the upstream of the tubular furnace to the downstream, setting the upstream temperature of the tubular furnace to 320 ℃, setting the downstream temperature to 420 ℃, and reacting for 1h to obtain the nickel-manganese selenide heterojunction electrocatalyst.
As shown in fig. 1, the XRD pattern of the nickel-manganese selenide heterojunction electrocatalyst prepared in this example shows that the presence of nickel-manganese selenide crystals in the electrocatalyst is indicated by XRD test results.
The product was tested by Linear Sweep Voltammetry (LSV) on an electrochemical workstation of CHI660e, using a three electrode system, the nickel manganese selenide heterojunction electrocatalyst electrode prepared in this example was the working electrode, hg/HgO was the reference electrode, the graphite rod was the counter electrode, the electrolyte was 1M KOH, and the HER and OER polarization curve test sweep rates were 5mV s -1 . The conversion formula between the applied voltage and the reversible hydrogen electrode is E RHE ＝E Hg/HgO +0.0591pH+0.098。
FIG. 2 shows a three-electrode system test OER polarization curve of the nickel-manganese selenide heterojunction electrocatalyst prepared in this example in 1M KOH, with a test voltage range of 1-2V (vs. standard hydrogen electrode), OER theoretical potential of 1.23V, working electrode oxygen evolution reaction, when OER reaches 50mAcm -2 The nickel manganese selenide heterojunction electrocatalyst prepared in this example only requires 422mV overpotential, which is lower than that of the nickel manganese oxide precursor before diselenide (nickel manganese oxide layered nanosheet coated carbon cloth prepared in this example, sheared to 0.36 cm) 2 ) Is an overvoltage of (2).
FIG. 3 shows a three-electrode system for measuring HER polarization curve of a nickel-manganese selenide heterojunction electrocatalyst prepared in this example in 1M KOH, wherein the test voltage range is 0-0.5V (relative to a standard hydrogen electrode), and an HER theoretical potential of 0V working electrode undergoes an oxygen evolution reaction when HER reaches 10mAcm -2 The nickel manganese selenide heterojunction electrocatalyst prepared in this example only requires an overpotential of 158mV。
The above LSV test results demonstrate that the electrocatalyst prepared in this example has excellent performance.
Example 2
The preparation method of the nickel manganese selenide heterojunction electrocatalyst comprises the following specific steps:
dissolving 0.08mol of nickel chloride, 0.16mol of manganese nitrate and 0.003mol of potassium persulfate in 300mL of deionized water, stirring for 10min to obtain a mixed solution, and ultrasonically treating to remove 9cm of surface grease and impurities 2 Adding carbon cloth into the mixed solution, stirring for 3min, dropwise adding 4mL of ammonia water solution with the pH value of 9 into the solution while stirring at 15 ℃, standing for 20min after dropwise adding, taking out, drying, putting into a tube furnace, heating to 350 ℃ from the room temperature at the heating rate of 5 ℃/min, preserving heat for 30min to obtain nickel-manganese oxide layered nano-sheet coated carbon cloth (700 mg), washing the prepared nickel-manganese oxide layered nano-sheet coated carbon cloth with deionized water and alcohol for 3-5 times, putting into a blast drying box at 60 ℃ for drying, putting into a tube furnace at a double temperature zone downstream, putting 600mg of selenium powder into the upstream of the tube furnace, introducing hydrogen, flowing the hydrogen from the upstream of the tube furnace to the downstream, setting the upstream temperature of the tube furnace to 340 ℃, setting the downstream temperature to 440 ℃, and reacting for 2h to obtain the nickel-manganese selenide heterojunction electrocatalyst.
Example 3
The preparation method of the nickel manganese selenide heterojunction electrocatalyst comprises the following specific steps:
dissolving 0.08mol of nickel chloride, 0.32mol of manganese nitrate and 0.003mol of potassium persulfate in 300mL of deionized water, stirring for 10min to obtain a mixed solution, and ultrasonically treating to remove 9cm of surface grease and impurities 2 Adding carbon cloth into the mixed solution, stirring for 3min, then dropwise adding 4mL of ammonia water solution with pH value of 8 into the solution while stirring at 15 ℃, standing for 20min after dropwise adding, taking out, drying, placing into a tubular furnace, heating to 400 ℃ from room temperature at a heating rate of 5 ℃/min, preserving heat for 30min to obtain nickel-manganese oxide layered nano-sheet coated carbon cloth (600 mg), washing the prepared nickel-manganese oxide layered nano-sheet coated carbon cloth with deionized water and alcohol for 3-5 times, placing into a blast drying oven at 60 ℃ for drying, and thenAnd then placing the mixture in the downstream of a double-temperature-zone tubular furnace, placing 500mg of selenium powder in the upstream of the tubular furnace, introducing hydrogen, enabling the hydrogen to flow from the upstream of the tubular furnace to the downstream, setting the upstream temperature of the tubular furnace to 360 ℃, setting the downstream temperature to 460 ℃, and reacting for 3 hours to obtain the nickel-manganese selenide heterojunction electrocatalyst.

Claims (10)

1. The nickel manganese selenide heterojunction electrocatalyst is characterized by comprising the following specific steps:
1) Dissolving nickel salt and manganese salt in deionized water, adding potassium persulfate to obtain a mixed solution, immersing the carbon cloth with clean surface in the obtained mixed solution, dripping a weak alkaline solution into the mixed solution while stirring, standing for 20-30 min after dripping, and growing on the carbon cloth to obtain layered nickel-manganese hydroxide nano sheets;
2) Placing the carbon cloth with the layered nickel-manganese hydroxide nano-sheets grown on the surface of the step 1) in a porcelain boat, placing the porcelain boat in a tube furnace for first calcination, and obtaining a precursor nickel-manganese oxide on the surface of the carbon cloth;
3) Arranging carbon coated with precursor nickel manganese oxide on the surface of the step 2) at the downstream of a tube furnace, arranging selenium powder at the upstream of the tube furnace, setting different temperatures at the upstream and the downstream, introducing hydrogen, flowing the hydrogen from the upstream of the tube furnace to the downstream, and performing secondary calcination to obtain the nickel manganese selenide heterojunction electrocatalyst.
2. The nickel manganese selenide heterojunction electrocatalyst according to claim 1, wherein the nickel salt of step 1) is one of nickel nitrate, nickel chloride, nickel phosphide, nickel bromide, nickel sulfate; the manganese salt is one of manganese sulfate, manganese nitrate, manganese acetate and manganese chloride; the molar ratio of the nickel salt to the manganese salt is 1:1 to 4.
3. The nickel manganese selenide heterojunction electrocatalyst according to claim 1, wherein the concentration of potassium persulfate in the mixed solution of step 1) is 0.005 to 0.015mol/L.
4. The nickel manganese selenide heterojunction electrocatalyst according to claim 1, wherein the concentration of nickel ions in the mixed liquor of step 1) is 0.2 to 0.3mol/L, and the concentration of manganese ions is 0.2 to 1.2mol/L.
5. The nickel manganese selenide heterojunction electrocatalyst according to claim 1, wherein the weakly alkaline solution in step 1) is one of an aqueous ammonia solution, a sodium bicarbonate solution, and a potassium bicarbonate solution, the pH value of which is 7-10, and the volume ratio of the weakly alkaline solution to the mixed solution is 0.01-0.03:1.
6. the nickel manganese selenide heterojunction electrocatalyst according to claim 1, wherein the first calcination process conditions of step 2) are: heating to 200-600 ℃ at room temperature at a heating rate of 3-8 ℃/min, and preserving heat for 20-30 min.
7. The nickel manganese selenide heterojunction electrocatalyst according to claim 1, wherein the mass ratio of the selenium powder in step 3) to the carbon cloth coated with the precursor nickel manganese oxide on the surface is 1:1 to 2.
8. The nickel manganese selenide heterojunction electrocatalyst according to claim 1, wherein in step 3) the second calcination is performed at a temperature of 300 to 400 ℃ upstream of the tube furnace, 400 to 500 ℃ downstream of the tube furnace, and for a calcination time of 1 to 3 hours.
9. A method for preparing a nickel manganese selenide heterojunction electrocatalyst according to any one of claims 1 to 8, comprising the specific steps of:
1) Dissolving nickel salt and manganese salt in deionized water, adding potassium persulfate to obtain a mixed solution, immersing the carbon cloth with clean surface in the obtained mixed solution, dripping a weak alkaline solution into the mixed solution while stirring, standing for 20-30 min after dripping, and growing on the carbon cloth to obtain layered nickel-manganese hydroxide nano sheets;
2) Placing the carbon cloth with the layered nickel-manganese hydroxide nano-sheets grown on the surface of the step 1) in a porcelain boat, placing the porcelain boat in a tube furnace for first calcination, and obtaining a precursor nickel-manganese oxide on the surface of the carbon cloth;
3) Arranging carbon coated with precursor nickel manganese oxide on the surface of the step 2) at the downstream of a tube furnace, arranging selenium powder at the upstream of the tube furnace, setting different temperatures at the upstream and the downstream, introducing hydrogen, flowing the hydrogen from the upstream of the tube furnace to the downstream, and performing secondary calcination to obtain the nickel manganese selenide heterojunction electrocatalyst.
10. Use of a nickel manganese selenide heterojunction electrocatalyst according to any one of claims 1 to 8 for the production of hydrogen by electrolysis of water.
CN202210032249.5A 2022-01-12 2022-01-12 Nickel-manganese selenide heterojunction electrocatalyst and preparation method and application thereof Active CN114411195B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210032249.5A CN114411195B (en) 2022-01-12 2022-01-12 Nickel-manganese selenide heterojunction electrocatalyst and preparation method and application thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210032249.5A CN114411195B (en) 2022-01-12 2022-01-12 Nickel-manganese selenide heterojunction electrocatalyst and preparation method and application thereof

Publications (2)

Publication Number Publication Date
CN114411195A CN114411195A (en) 2022-04-29
CN114411195B true CN114411195B (en) 2023-07-18

Family

ID=81274135

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210032249.5A Active CN114411195B (en) 2022-01-12 2022-01-12 Nickel-manganese selenide heterojunction electrocatalyst and preparation method and application thereof

Country Status (1)

Country Link
CN (1) CN114411195B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115011989A (en) * 2022-05-31 2022-09-06 武汉工程大学 Nickel-manganese nitride catalyst and preparation method and application thereof

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108550806B (en) * 2018-03-28 2020-10-09 中南大学 MnSe/CoSe2Composite material and preparation method and application thereof
CN110465312A (en) * 2019-05-30 2019-11-19 华南理工大学 A kind of self-supporting carbon cloth load cobaltous selenide nickel nanowire preparation method and application
CN110610816A (en) * 2019-09-18 2019-12-24 江苏大学 Preparation method of carbon cloth-based nickel-cobalt double-metal selenide nano square sheet electrode material
CN111495395B (en) * 2020-04-26 2021-05-11 中南大学 High-efficiency bimetallic nickel-molybdenum selenide electrocatalytic material and preparation method thereof
CN113215613B (en) * 2021-03-18 2022-11-29 武汉工程大学 Selenium mixture array and preparation method and application thereof
CN113652707B (en) * 2021-07-02 2023-03-03 武汉工程大学 Nickel telluride hydrogen evolution catalyst and preparation method and application thereof
CN113637999A (en) * 2021-08-19 2021-11-12 武汉工程大学 Cu-based nano array composite nickel-molybdenum oxide electrode material and preparation method and application thereof

Also Published As

Publication number Publication date
CN114411195A (en) 2022-04-29

Similar Documents

Publication Publication Date Title
CN109019602B (en) Molybdenum carbide material, molybdenum carbide @ molybdenum sulfide composite material, and preparation method and application thereof
CN110052277B (en) Preparation method of transition metal group metal sulfide oxygen evolution catalyst
CN109954503B (en) Nickel selenide and ternary nickel-iron selenide composite electrocatalyst, preparation method and application
CN112481653B (en) Defect-rich molybdenum-doped cobalt selenide/nano carbon electrocatalyst and preparation method and application thereof
CN111001428B (en) Metal-free carbon-based electrocatalyst, preparation method and application
CN113388847B (en) Prussian blue analogue derived metal sulfide/nitrogen-doped carbon electrocatalyst and preparation method and application thereof
CN113136597B (en) Copper-tin composite material and preparation method and application thereof
CN111701607A (en) MnCo2O4@Ni2P/NF difunctional full-hydrolysis catalyst and preparation method and application thereof
CN113279005A (en) Cobalt doped MoS2/NiS2Preparation method of porous heterostructure material and application of material in electrocatalytic hydrogen evolution
CN110787824A (en) Preparation method and application of vanadium-doped transition metal nitride
CN114411195B (en) Nickel-manganese selenide heterojunction electrocatalyst and preparation method and application thereof
CN110699701B (en) Foam nickel loaded with metal nickel and vanadium trioxide compound and preparation method and application thereof
CN114875442A (en) Ruthenium-modified molybdenum-nickel nanorod composite catalyst and preparation method and application thereof
CN113337846B (en) Supported layered metal hydroxide electrocatalyst with partially-vulcanized surface, and preparation method and application thereof
CN110721749A (en) NiCo coated with metal organic framework structure derived carbon composite2S4Nanowire array-shaped electrocatalyst and preparation method thereof
CN110773202A (en) Preparation method of yolk-shell structured nickel-molybdenum bimetallic sulfide applied to water cracking
CN111342056B (en) Preparation method and application of high-stability double-transition-metal-doped tungsten carbide-based zinc air battery cathode material
CN112962107A (en) Square-meter-level high-activity high-stability nickel electrode, preparation method and application thereof
CN112007672B (en) CrP-Re2Preparation method of P hydrogen evolution and oxygen evolution electrocatalyst
CN112007671B (en) Fe1Co6-P @ CC electrocatalyst and preparation method thereof
CN113249752B (en) Fe2P-WOxPreparation method of oxygen evolution electrocatalyst
CN115074774B (en) Rhodium-based hollow porous microsphere/nickel foam electrode and preparation method and application thereof
CN113913857B (en) Ni-Ni 3 C/NC core-shell structure nano material electrocatalyst and preparation method thereof
CN113201752B (en) Preparation method and application of CoNiP-P nano catalyst with rich heterojunction
CN115011989A (en) Nickel-manganese nitride catalyst and preparation method and application thereof

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
GR01 Patent grant
GR01 Patent grant