CN109628952A - A kind of Ni-based double-metal hydroxide electrocatalytic hydrogen evolution catalyst of foamed nickel supported Ag doping and preparation method thereof - Google Patents
A kind of Ni-based double-metal hydroxide electrocatalytic hydrogen evolution catalyst of foamed nickel supported Ag doping and preparation method thereof Download PDFInfo
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- C25B11/051—Electrodes formed of electrocatalysts on a substrate or carrier
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Abstract
The present invention relates to a kind of foamed nickel supported Ni-based double-metal hydroxide electrocatalytic hydrogen evolution catalyst of Ag doping and preparation method thereof, the catalyst is using nickel foam as carrier, there is the Ni-based double-metal hydroxide of lamellar structure in the evenly distributed growth of foam nickel surface, nano-Ag particles are evenly affixed to Ni-based double-metal hydroxide surface.The Ni-based double-metal hydroxide electrocatalytic hydrogen evolution catalyst of foamed nickel supported Ag doping provided by the invention is using the three-dimensional porous foams nickel with reticular structure as carrier, Ni-based double-metal hydroxide is firmly combined with carrier, it is evenly distributed, the catalyst has good catalytic hydrogen evolution effect under alkaline condition, and can keep stable catalytic activity in a long time.
Description
Technical field
The invention belongs to electrolysis water catalytic hydrogen evolution fields, and in particular to a kind of foamed nickel supported Ni-based bimetallic hydrogen of Ag doping
Oxide electrocatalytic hydrogen evolution catalyst and preparation method thereof.
Background technique
Current main energy sources or coal, oil and natural gas in the world, with the development of world economy, the energy is used
It is increasing, and fossil fuel faces exhausted danger as the non-renewable energy.Energy efficiency is low and environmental problem state
The increasingly reinforcement on border promotes the research and development for reinforcing the energy.In many new energy having been developed that, hydrogen as energy source is because of production
The advantages that simple process, source is simple, cleanliness without any pollution, high energy density, it is considered to be optimal clean energy resource.Electrolysis water
Hydrogen manufacturing have many advantages, such as simple process, product purity it is high, it is environmental-friendly, can be mass produced and receive academia and business circles
Extensive concern.The important evidence for evaluating water electrolysis hydrogen production state-of-art is unit power consumption, in theory, according to farad
Law produces 1m3The hydrogen electricity consumption of (standard) is 2.94kW.h, and industrial production electricity consumption is about 2 times of theoretical value, mainly
It is to increase its electrolytic cell pressure due to the presence of overpotential of hydrogen evolution in process of production, energy consumption increases, and constrains electrolysis water technology
And the applicable development of hydrogen.Most common Pt base catalyst has an excellent electrocatalytic hydrogen evolution activity, but Pt it is expensive and
Scarcity of resources.Therefore, developing a kind of cheap and with high catalytic activity of hydrogen evolution electrode material seems particularly significant.
Summary of the invention
The technical problem to be solved by the present invention is to aiming at the above shortcomings existing in the prior art, provide a kind of nickel foam
Loading Ag doped Ni-based double-metal hydroxide electrocatalytic hydrogen evolution catalyst and preparation method thereof, the catalyst is in alkaline environment item
There is good catalytic hydrogen evolution activity under part, and be prepared using one step hydro thermal method, preparation process is simple.
In order to solve the above technical problems, present invention provide the technical scheme that
A kind of Ni-based double-metal hydroxide of foamed nickel supported Ag doping (Ag-doped Ni-M LDH) electro-catalysis analysis is provided
Hydrogen catalyst, the catalyst have the Ni-based double of lamellar structure using nickel foam as carrier, in evenly distributed grow of foam nickel surface
Metal hydroxides, nano-Ag particles are evenly affixed to Ni-based double-metal hydroxide surface.
According to the above scheme, the Ni-based double-metal hydroxide is ambrose alloy hydroxide or nickel chromium triangle hydroxide (Ni-M
LDH, M are one of copper, chromium).
The present invention also provides the above-mentioned foamed nickel supported Ni-based double-metal hydroxide electrocatalytic hydrogen evolution catalyst of Ag doping
Preparation method, the specific steps are as follows:
1) nickel foam be surface-treated: by three-dimensional foam nickel in hydrochloric acid solution ultrasound 20min, remove the oxidation on its surface
Object after then being cleaned with pure water, is placed on degreasing degreasing 20min in dehydrated alcohol, is finally placed on ultrasound 10min in pure water；
2) nickel salt, metal salt, urea, ammonium fluoride, pure water are uniformly mixed, obtain solution 1, wherein the molar concentration of nickel is
The integral molar quantity of 0.005~0.02 mol/L, nickel salt and metal salt and the molar ratio 1:5 of urea, nickel salt and metal salt always rub
The molar ratio 1:5 of your amount and amine fluoride；
3) silver nitrate and pure water are uniformly mixed, obtain solution 2；
4) reducing agent and stabilizer are uniformly mixed, prepare reducing agent solution, obtains solution 3；
5) by treated in step 1), three-dimensional foam nickel is added in solution 1, and solution successively then is added into solution 1
2 and solution 3, be then transferred in Teflon reaction kettle and carry out solvent thermal reaction, wash after reaction, it is dry to get
To the Ni-based double-metal hydroxide liberation of hydrogen catalyst of foamed nickel supported Ag doping.
According to the above scheme, step 1) the nickel foam purity is 99.99% or more, and porosity is 95% or more.
According to the above scheme, the step 2) nickel salt is selected from one of nickel nitrate, nickel chloride, nickel sulfate, nickel acetate；It is described
Metal salt is selected from one of copper, the nitrate of chromium, chlorate, sulfate, acetate；The molar ratio of the nickel salt and metal salt
For 10~1:1.
According to the above scheme, concentration of silver ions is 0.01~0.1 mol/L in the step 3) solution 2.
According to the above scheme, the step 4) reducing agent is sodium borohydride, and the stabilizer is trisodium citrate, the reduction
Agent and stabilizer molar ratio are 1:0.1~1.
According to the above scheme, mole of nickel salt described in step 5) solution 1 and metal salt integral molar quantity and silver nitrate in solution 2
Than for 1:1~3.
According to the above scheme, silver nitrate mole described in step 5) solution 2 and reducing agent in solution 3 and stabilizer always rub
The molar ratio of your amount is 1:1~3.
According to the above scheme, step 5) the solvent thermal reaction condition is that 6~12h is reacted at 120~180 DEG C.
The invention also includes the above-mentioned foamed nickel supported Ni-based double-metal hydroxide electrocatalytic hydrogen evolution catalyst of Ag doping to exist
Application in terms of electrocatalytic hydrogen evolution.
The application method of the above-mentioned Ni-based double-metal hydroxide electrocatalytic hydrogen evolution catalyst of foamed nickel supported Ag doping are as follows: will
The Ni-based double-metal hydroxide electrocatalytic hydrogen evolution catalyst of foamed nickel supported Ag doping is placed in alkaline solution.
Preferably, the alkaline solution is the potassium hydroxide aqueous solution (pH value=13.6) of 1mol/L.
Present invention design has synthesized the Ni-based layered double hydroxide of Ag doping (Ag-doped Ni-M LDH) catalysis material
Material grows one layer of Ni-based bimetallic hydrogen-oxygen in conjunction with nickel foam densification in the Ni-based bottom surface of three-dimensional foam using one step hydro thermal method
Nano silver is introduced while compound (Ni-M LDH), enabled effectively increase of layered double hydroxide (LDH) lamellar structure is urged
The surface area of agent helps to expose more active sites；The relatively weak electric conductivity limitation of layered double hydroxide
Strong electric conductivity and metallic silver with catalytic activity itself are adulterated in the development of this kind of catalyst activity, this experiment, hence it is evident that
This disadvantage is improved to make electrocatalytic hydrogen evolution performance be significantly improved.
The beneficial effects of the present invention are: 1, provided by the invention foamed nickel supported Ag doping Ni-based double-metal hydroxide
Electrocatalytic hydrogen evolution catalyst increases the contact surface area with water using the three-dimensional porous foams nickel with reticular structure as carrier,
Better channels are provided for electronics transfer, Ni-based double-metal hydroxide is firmly combined with carrier, is evenly distributed, and improves electrode
Stability, in addition, the lamellar structure of Ni-based double-metal hydroxide increases the specific surface area of catalyst, levels of transition metals
Height enriches active site, enhances catalytic activity, which has good catalytic hydrogen evolution effect under alkaline condition, and
Stable catalytic activity can be kept in a long time.2, preparation method step provided by the invention is simple, easy to implement.
Detailed description of the invention
Fig. 1 is the foamed nickel supported Ni-based double-metal hydroxide electro-catalysis analysis of Ag doping prepared by the embodiment of the present invention 1
The TEM photo of hydrogen catalyst；
Fig. 2 is the foamed nickel supported Ni-based double-metal hydroxide electrocatalytic hydrogen evolution catalysis of Ag doping prepared by embodiment 2
The TEM photo of agent；
Fig. 3 is composite catalyst liberation of hydrogen linear scan curve graph prepared by embodiment 1-2 and comparative example 1-3；
Fig. 4 is the Ni-based double-metal hydroxide electrocatalytic hydrogen evolution catalyst of foamed nickel supported Ag doping prepared by embodiment 2
Time-measuring electric potential curve graph under constant current；
Fig. 5 is to be saturated calomel electricity by working electrode of composite catalyst prepared by embodiment 1-2 and comparative example 1-3 respectively
Extremely reference electrode, graphite rod are to electrode, and the potassium hydroxide aqueous solution of 1.0 mol/Ls is electrolyte solution, and test temperature is
25 DEG C of Tafel slope figure.
Specific embodiment
Technical solution in order to enable those skilled in the art to better understand the present invention, with reference to the accompanying drawing to the present invention make into
One step detailed description.
Embodiment 1
Prepare the Ni-based double-metal hydroxide electrocatalytic hydrogen evolution catalyst of foamed nickel supported Ag doping, the specific steps are as follows:
(1) by three-dimensional foam nickel (1 × 3cm2, purity 99.99%, porosity 95%) and in 1 mol/L hydrochloric acid solution
Middle ultrasound 20min, removes the oxide on its surface, after then being cleaned with pure water, is placed on degreasing degreasing in dehydrated alcohol
20min is finally placed on ultrasound 10min in pure water；
(2) nickel nitrate, copper nitrate, urea, amine fluoride, pure water are uniformly mixed, obtain solution 1, wherein nickel is mole dense
Degree is 0.02 mol/L, and the molar concentration of copper is 0.01 mol/L, and the molar concentration of urea is 0.15 mol/L, amine fluoride
Molar concentration be 0.15 mol/L；Silver nitrate and pure water are uniformly mixed, solution 2 is obtained, wherein the molar concentration of silver ion
For 0.1 mol/L；Reducing agent sodium borohydride and stabilizer trisodium citrate are uniformly mixed, reducing agent solution is prepared, is denoted as molten
Liquid 3, wherein sodium borohydride molar concentration is 0.1 mol/L, and trisodium citrate molar concentration is 0.02 mol/L；By step
(1) treated in, and three-dimensional foam nickel is added in solution 1, solution 2 and solution 3 is then successively added into solution 1, wherein molten
The molar ratio of nickel salt and mantoquita integral molar quantity and silver nitrate in solution 2 is 1:1, silver nitrate mole and solution in solution 2 in liquid 1
The molar ratio of the integral molar quantity of reducing agent and stabilizer is 1:1 in 3, is then transferred in Teflon reaction kettle and carries out solvent
Thermal response, 180 DEG C at a temperature of react 6h；To after reaction, be washed with deionized, be put into freeze dryer it is dry to get
To foamed nickel supported Ag doping ambrose alloy double-metal hydroxide liberation of hydrogen catalyst.
Foamed nickel supported Ag doping ambrose alloy double-metal hydroxide apparent form
It is swept for the foamed nickel supported Ag doping ambrose alloy double-metal hydroxide catalysis material that the present embodiment prepares
It retouches Electronic Speculum and tests to obtain Electronic Speculum (SEM) photo in Fig. 1, it can be seen that mixed according to the foamed nickel supported silver that this programme is prepared
Miscellaneous double-metal hydroxide is evenly distributed closely in foam nickel surface, and the ambrose alloy double-metal hydroxide size of lamellar structure is about
It is 0.2~1 μm, nano-Ag particles size is about 200nm, and Uniform Doped is between the unique layer structure of hydroxide and lamella
Body structure surface.
Foamed nickel supported Ag doping ambrose alloy double-metal hydroxide Hydrogen Evolution Performance test
Using three-electrode system, the foamed nickel supported Ag doping ambrose alloy double-metal hydroxide liberation of hydrogen of step (2) preparation is urged
Agent is working electrode, and saturated calomel electrode is reference electrode, and graphite rod is to electrode, and test temperature is 25 DEG C, is rubbed with 1.0
You/liter potassium hydroxide aqueous solution (pH value=13.6) be used as electrolyte solution, in (CHI760E) electrochemical workstation (Shanghai
Chen Hua Instrument Ltd.) sweep speed be 2 mv ss, scanning range be -0.9~-1.5 volts (relative to saturation calomel electricity
Pole), the curve 1 in test result corresponding diagram 3.
Embodiment 2
Prepare the Ni-based double-metal hydroxide electrocatalytic hydrogen evolution catalyst of foamed nickel supported Ag doping, the specific steps are as follows:
(1) by three-dimensional foam nickel (1 × 3cm2, purity 99.99%, porosity 95%) and in 1 mol/L hydrochloric acid solution
Middle ultrasound 20min, removes the oxide on its surface, after then being cleaned with pure water, is placed on degreasing degreasing in dehydrated alcohol
20min is finally placed on ultrasound 10min in pure water；
(2) nickel nitrate, chromic nitrate, urea, amine fluoride, pure water are uniformly mixed, obtain solution 1, wherein nickel is mole dense
Degree is 0.02 mol/L, and the molar concentration of chromium is 0.005 mol/L, and the concentration of urea is 0.125 mol/L, amine fluoride
Concentration is 0.125 mol/L；Silver nitrate and pure water are uniformly mixed, solution 2 is obtained, wherein the molar concentration of silver ion is 0.1
Mol/L；Reducing agent sodium borohydride and stabilizer trisodium citrate are uniformly mixed, reducing agent solution is prepared, is solution 3,
Middle sodium borohydride molar concentration is 0.1 mol/L, and trisodium citrate molar concentration is 0.02 mol/L；By place in step (1)
Three-dimensional foam nickel after reason is added in solution 1, solution 2 and solution 3 is then successively added into solution 1, wherein nickel in solution 1
The molar ratio of silver nitrate is 1:1 in salt and mantoquita integral molar quantity and solution 2, is restored in silver nitrate mole and solution 3 in solution 2
The molar ratio of the integral molar quantity of agent and stabilizer is 1:1, is then transferred in Teflon reaction kettle and carries out solvent thermal reaction,
120 DEG C at a temperature of react 6h；To after reaction, be washed with deionized, freeze dryer drying is put into get nickel foam is arrived
Loading Ag doped nickel chromium triangle double-metal hydroxide liberation of hydrogen catalyst.
Foamed nickel supported Ag doping nickel chromium triangle double-metal hydroxide apparent form
Electronic Speculum is scanned for the foamed nickel supported Ag doping nickel chromium triangle double-metal hydroxide catalysis material prepared to survey
Examination obtains Electronic Speculum (SEM) photo in Fig. 2, it can be seen that double-metal hydroxide is evenly distributed closely in foam nickel surface, piece
The nickel chromium triangle double-metal hydroxide size of layer structure is about 0.2~0.5 μm, and nano-Ag particles size is about 200nm, Uniform Doped
Between the unique layer structure of hydroxide and lamellar structure surface.
Foamed nickel supported Ag doping nickel chromium triangle double-metal hydroxide Hydrogen Evolution Performance test
Using three-electrode system, the foamed nickel supported Ag doping nickel chromium triangle double-metal hydroxide liberation of hydrogen of step (2) preparation is urged
Agent is working electrode, and saturated calomel electrode is reference electrode, and graphite rod is to electrode, and test temperature is 25 DEG C, is rubbed with 1.0
You/liter potassium hydroxide aqueous solution in be electrolyte solution, in (CHI 760E) electrochemical workstation, (Shanghai Chen Hua instrument is limited
Company) sweep speed be 2 mv ss, scanning range be -0.9~-1.5 volts (relative to saturated calomel electrode), test result pair
Answer the curve 2 in Fig. 3.
Fig. 4 is the foamed nickel supported Ni-based double-metal hydroxide electrocatalytic hydrogen evolution catalyst of Ag doping manufactured in the present embodiment
The time-measuring electric potential curve tested on (CHI 760E) electrochemical workstation (Shanghai Chen Hua Instrument Ltd.).Test condition:
Three-electrode system, the potassium hydroxide aqueous solution of 1.0 mol/Ls are electrolyte solution, and catalysis material prepared by embodiment 1 is work
Make electrode, saturation calomel is reference electrode, and it is 10mA/cm in current density that graphite rod, which is to electrode,-2Constant current under continue
It is electrolysed 10h, from fig. 4, it can be seen that using catalyst manufactured in the present embodiment in current density for -10mA/cm-2Constant current it is close
Lower continued electrolysis 10h is spent, overpotential illustrates that the catalysis material has preferable stability almost without reduction.
Comparative example 1
Prepare composite catalyst, the specific steps are as follows:
(1) pretreatment of nickel foam is the same as step (1) in embodiment 1
(2) pretreated nickel foam Hydrogen Evolution Performance test
Using three-electrode system, pretreated nickel foam is working electrode in step (1), and saturated calomel electrode is reference electricity
Pole, graphite rod are to electrode, and test temperature is 25 DEG C, in the potassium hydroxide aqueous solution of 1.0 mol/Ls for electrolyte solution,
(CHI 760E) electrochemical workstation (Shanghai Chen Hua Instrument Ltd.) sweep speed be 2 mv ss, scanning range be-
0.9~-1.5 volts (relative to saturated calomel electrode), the curve 3 in test result corresponding diagram 3.
Comparative example 2
Prepare composite catalyst, the specific steps are as follows:
(1) pretreatment of nickel foam is the same as step (1) in embodiment 1
(2) preparation of the foamed nickel supported ambrose alloy double-metal hydroxide catalysis material undoped with silver
Nickel nitrate, copper nitrate, urea, amine fluoride, pure water are uniformly mixed, precursor solution is obtained, wherein mole of nickel
Concentration is 0.02 mol/L, and the molar concentration of copper is 0.01 mol/L, and the molar concentration of urea is 0.15 mol/L, fluorination
The molar concentration of amine is 0.15 mol/L；By treated in step (1), three-dimensional foam nickel is added in precursor solution, so
After transfer them to and carry out solvent thermal reaction in Teflon reaction kettle, 180 DEG C at a temperature of react 6h；To after reaction,
It is washed with deionized, is put into freeze dryer drying to get foamed nickel supported ambrose alloy double-metal hydroxide liberation of hydrogen catalyst is arrived.
(3) the foamed nickel supported ambrose alloy double-metal hydroxide catalysis material Hydrogen Evolution Performance test undoped with silver
Using three-electrode system, the electrode of step (2) preparation is working electrode, and saturated calomel electrode is reference electrode, stone
Inker is to electrode, and test temperature is 25 DEG C, in the potassium hydroxide aqueous solution of 1.0 mol/Ls for electrolyte solution, in (CHI
760E) electrochemical workstation (Shanghai Chen Hua Instrument Ltd.) sweep speed be 2 mv ss, scanning range be -0.9~-
1.5 volts (relative to saturated calomel electrode), the curve 4 in test result corresponding diagram 3.
Comparative example 3
Prepare composite catalyst, the specific steps are as follows:
(1) preparation of Ag doping ambrose alloy double-metal hydroxide catalysis material
Nickel nitrate, copper nitrate, urea, amine fluoride, pure water are uniformly mixed, precursor solution is obtained, wherein mole of nickel
Concentration is 0.02 mol/L, and the molar concentration of copper is 0.01 mol/L, and the molar concentration of urea is 0.15 mol/L, fluorination
The molar concentration of amine is 0.15 mol/L；Precursor solution is transferred in Teflon reaction kettle and carries out solvent thermal reaction,
6h is reacted at a temperature of 180 DEG C；To after reaction, be washed with deionized, freeze dryer drying is put into get Ag doping nickel is arrived
Copper bi-metal hydroxide liberation of hydrogen catalyst.
(2) the Hydrogen Evolution Performance test of Ag doping ambrose alloy double-metal hydroxide catalysis material
Using three-electrode system, the catalysis material powder-like 0.4mg for taking step (1) to prepare, acetylene black powder 0.1mg add
Enter to pure water, dehydrated alcohol, naflon liquor capacity than taking 20 microlitres of mixing molten in 1 milliliter of mixed solution for 225:75:1
Drop is used as working electrode on glass-carbon electrode after drying, saturated calomel electrode is reference electrode, and graphite rod is to survey to electrode
Try temperature be 25 DEG C, in the potassium hydroxide aqueous solution of 1.0 mol/Ls for electrolyte solution, in (CHI 760E) electrochemistry work
(Shanghai Chen Hua Instrument Ltd.) sweep speed of standing is 2 mv ss, and scanning range is -0.9~-1.5 volts (relative to full
And calomel electrode), the curve 5 in test result corresponding diagram 3.
It can be seen that the doping of silver to Ni-based bimetal hydroxide prepared by the present invention from the linear scan curve of Fig. 3
The Hydrogen Evolution Performance of object has an apparent influence, catalysis material Hydrogen Evolution Performance prepared by the present invention more preferably, under identical overpotential this
The current density of the catalyst of inventive embodiments preparation is much higher by pure foam nickel and the double-metal hydroxide undoped with silver is urged
Agent.
Fig. 5 is to be saturated calomel electricity by working electrode of composite catalyst prepared by embodiment 1-2 and comparative example 1-3 respectively
Extremely reference electrode, graphite rod are to electrode, and the potassium hydroxide aqueous solution of 1.0 mol/Ls is electrolyte solution, and test temperature is
25 DEG C of Tafel slope figure.As seen from the figure, the Tafel slope and silver of the ambrose alloy layered double hydroxide after Ag doping
The Tafel slope of nickel chromium triangle layered double hydroxide after doping is respectively 48mV/dec and 51mV/dec, and business Pt/C
Tafel slope be 30mV/dec.The either overpotential or Tafel slope of the Ni-based double-metal hydroxide of Ag doping,
It can compare favourably with the optimum performance of the state-of-the-art non-precious metal catalyst of electrolysis water liberation of hydrogen.
Claims (10)
1. a kind of Ni-based double-metal hydroxide electrocatalytic hydrogen evolution catalyst of foamed nickel supported Ag doping, which is characterized in that described
Catalyst has the Ni-based double-metal hydroxide of lamellar structure using nickel foam as carrier, in the evenly distributed growth of foam nickel surface,
Nano-Ag particles are evenly affixed to Ni-based double-metal hydroxide surface.
2. the Ni-based double-metal hydroxide electrocatalytic hydrogen evolution catalyst of foamed nickel supported Ag doping according to claim 1,
It is characterized in that, the Ni-based double-metal hydroxide is ambrose alloy hydroxide or nickel chromium triangle hydroxide.
3. a kind of foamed nickel supported Ni-based double-metal hydroxide electrocatalytic hydrogen evolution catalysis of Ag doping of any of claims 1 or 2
The preparation method of agent, which is characterized in that specific step is as follows:
1) nickel foam be surface-treated: by three-dimensional foam nickel in hydrochloric acid solution ultrasound 20min, remove the oxide on its surface, so
After being cleaned afterwards with pure water, it is placed on degreasing degreasing 20min in dehydrated alcohol, is finally placed on ultrasound 10min in pure water；
2) nickel salt, metal salt, urea, ammonium fluoride, pure water are uniformly mixed, obtain solution 1, wherein the molar concentration of nickel is
The integral molar quantity of 0.005~0.02 mol/L, nickel salt and metal salt and the molar ratio 1:5 of urea, nickel salt and metal salt always rub
The molar ratio 1:5 of your amount and amine fluoride；
3) silver nitrate and pure water are uniformly mixed, obtain solution 2；
4) reducing agent and stabilizer are uniformly mixed, prepare reducing agent solution, obtains solution 3；
5) by treated in step 1), three-dimensional foam nickel is added in solution 1, and 2 He of solution is then successively added into solution 1
Solution 3 is then transferred in Teflon reaction kettle and carries out solvent thermal reaction, washs after reaction, dries to get bubble is arrived
The Ni-based double-metal hydroxide liberation of hydrogen catalyst of foam nickel load Ag doping.
4. the Ni-based double-metal hydroxide electrocatalytic hydrogen evolution catalyst of foamed nickel supported Ag doping according to claim 3
Preparation method, which is characterized in that step 1) the nickel foam purity is 99.99% or more, and porosity is 95% or more.
5. the Ni-based double-metal hydroxide electrocatalytic hydrogen evolution catalyst of foamed nickel supported Ag doping according to claim 3
Preparation method, which is characterized in that the step 2) nickel salt is selected from one of nickel nitrate, nickel chloride, nickel sulfate, nickel acetate；Institute
It states metal salt and is selected from one of copper, the nitrate of chromium, chlorate, sulfate, acetate；Mole of the nickel salt and metal salt
Than for 10~1:1.
6. the Ni-based double-metal hydroxide electrocatalytic hydrogen evolution catalyst of foamed nickel supported Ag doping according to claim 3
Preparation method, which is characterized in that the step 4) reducing agent is sodium borohydride, and the stabilizer is trisodium citrate, described to go back
Former agent and stabilizer molar ratio are 1:0.1~1.
7. the Ni-based double-metal hydroxide electrocatalytic hydrogen evolution catalyst of foamed nickel supported Ag doping according to claim 3
Preparation method, which is characterized in that nickel salt described in step 5) solution 1 and metal salt integral molar quantity rub with silver nitrate in solution 2
You are than being 1:1~3；The integral molar quantity of reducing agent and stabilizer in silver nitrate mole described in step 5) solution 2 and solution 3
Molar ratio is 1:1~3.
8. the Ni-based double-metal hydroxide electrocatalytic hydrogen evolution catalyst of foamed nickel supported Ag doping according to claim 3
Preparation method, which is characterized in that step 5) the solvent thermal reaction condition is that 6~12h is reacted at 120~180 DEG C.
9. a kind of foamed nickel supported Ni-based double-metal hydroxide electrocatalytic hydrogen evolution catalysis of Ag doping of any of claims 1 or 2
Application of the agent in terms of electrocatalytic hydrogen evolution.
10. a kind of foamed nickel supported Ni-based double-metal hydroxide electrocatalytic hydrogen evolution catalysis of Ag doping of any of claims 1 or 2
The application method of agent, which is characterized in that urge the foamed nickel supported Ni-based double-metal hydroxide electrocatalytic hydrogen evolution of Ag doping
Agent is placed in alkaline solution.
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| CN201811650524.XA CN109628952A (en) | 2018-12-31 | 2018-12-31 | A kind of Ni-based double-metal hydroxide electrocatalytic hydrogen evolution catalyst of foamed nickel supported Ag doping and preparation method thereof |
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| CN201811650524.XA CN109628952A (en) | 2018-12-31 | 2018-12-31 | A kind of Ni-based double-metal hydroxide electrocatalytic hydrogen evolution catalyst of foamed nickel supported Ag doping and preparation method thereof |
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| CN110124673A (en) * | 2019-05-22 | 2019-08-16 | 复旦大学 | A kind of boron induction amorphous layered double-hydroxide elctro-catalyst and its preparation and application |
| CN110257858A (en) * | 2019-06-28 | 2019-09-20 | 青岛科技大学 | A kind of Ag/CoAl-LDH/ nickel foam NF multilevel structure combination electrode material and preparation method thereof |
| CN110404564A (en) * | 2019-08-16 | 2019-11-05 | 澳门大学 | A kind of difunctional complete solution water power catalyst and the preparation method and application thereof |
| CN110455888A (en) * | 2019-05-08 | 2019-11-15 | 南京工业大学 | A kind of electrode material of nickel foam self-supporting, preparation method and its purposes in detection phosphoric acid hydrogen radical ion |
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| CN115465923A (en) * | 2022-07-28 | 2022-12-13 | 湖南大学 | Method for treating nitrate wastewater by copper-nickel alloy three-dimensional composite electrode loaded with copper hydroxide |
| CN115465923B (en) * | 2022-07-28 | 2024-02-13 | 湖南大学 | Method for treating nitrate wastewater by copper-nickel alloy three-dimensional composite electrode loaded with copper hydroxide |
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