CN108447703B - A kind of ferronickel double-metal hydroxide@ceria heterogeneous structural nano sheet material, preparation method and applications - Google Patents
A kind of ferronickel double-metal hydroxide@ceria heterogeneous structural nano sheet material, preparation method and applications Download PDFInfo
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- CN108447703B CN108447703B CN201810219505.5A CN201810219505A CN108447703B CN 108447703 B CN108447703 B CN 108447703B CN 201810219505 A CN201810219505 A CN 201810219505A CN 108447703 B CN108447703 B CN 108447703B
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- 229910000000 metal hydroxide Inorganic materials 0.000 title claims abstract description 64
- 229910000863 Ferronickel Inorganic materials 0.000 title claims abstract description 61
- 239000000463 material Substances 0.000 title claims abstract description 55
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 title claims abstract description 42
- 239000002135 nanosheet Substances 0.000 title claims abstract description 37
- 238000002360 preparation method Methods 0.000 title claims abstract description 24
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 51
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical group O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 39
- 238000006243 chemical reaction Methods 0.000 claims abstract description 32
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 26
- 239000006260 foam Substances 0.000 claims abstract description 22
- 150000004692 metal hydroxides Chemical class 0.000 claims abstract description 21
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000004202 carbamide Substances 0.000 claims abstract description 17
- 239000012153 distilled water Substances 0.000 claims abstract description 14
- 238000010438 heat treatment Methods 0.000 claims abstract description 12
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 11
- 239000011259 mixed solution Substances 0.000 claims abstract description 10
- QQZMWMKOWKGPQY-UHFFFAOYSA-N cerium(3+);trinitrate;hexahydrate Chemical compound O.O.O.O.O.O.[Ce+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O QQZMWMKOWKGPQY-UHFFFAOYSA-N 0.000 claims abstract description 9
- SPIFDSWFDKNERT-UHFFFAOYSA-N nickel;hydrate Chemical compound O.[Ni] SPIFDSWFDKNERT-UHFFFAOYSA-N 0.000 claims abstract description 8
- 150000002823 nitrates Chemical class 0.000 claims abstract description 8
- 239000010405 anode material Substances 0.000 claims abstract description 6
- 238000004140 cleaning Methods 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 6
- 239000003990 capacitor Substances 0.000 claims description 3
- 229910002651 NO3 Inorganic materials 0.000 claims description 2
- 239000007772 electrode material Substances 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 238000003756 stirring Methods 0.000 claims description 2
- 238000001816 cooling Methods 0.000 claims 1
- 210000002700 urine Anatomy 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 11
- 230000003197 catalytic effect Effects 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000006185 dispersion Substances 0.000 abstract description 2
- 230000002349 favourable effect Effects 0.000 abstract description 2
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 12
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 238000000157 electrochemical-induced impedance spectroscopy Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 238000004502 linear sweep voltammetry Methods 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 239000008151 electrolyte solution Substances 0.000 description 4
- 235000019441 ethanol Nutrition 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 238000002441 X-ray diffraction Methods 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 238000010408 sweeping Methods 0.000 description 3
- 229910052684 Cerium Inorganic materials 0.000 description 2
- 229910021607 Silver chloride Inorganic materials 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 description 2
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 description 2
- 229910000420 cerium oxide Inorganic materials 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- VCJMYUPGQJHHFU-UHFFFAOYSA-N iron(3+);trinitrate Chemical compound [Fe+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O VCJMYUPGQJHHFU-UHFFFAOYSA-N 0.000 description 2
- 239000002105 nanoparticle Substances 0.000 description 2
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- HKZLPVFGJNLROG-UHFFFAOYSA-M silver monochloride Chemical compound [Cl-].[Ag+] HKZLPVFGJNLROG-UHFFFAOYSA-M 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 238000004832 voltammetry Methods 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000002484 cyclic voltammetry Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 238000000635 electron micrograph Methods 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 238000001453 impedance spectrum Methods 0.000 description 1
- UGKDIUIOSMUOAW-UHFFFAOYSA-N iron nickel Chemical compound [Fe].[Ni] UGKDIUIOSMUOAW-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000001000 micrograph Methods 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000004506 ultrasonic cleaning Methods 0.000 description 1
Classifications
-
- 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
- Y02E60/13—Energy storage using capacitors
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Catalysts (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Compounds Of Iron (AREA)
Abstract
The present invention provides a kind of ferronickel double-metal hydroxide@ceria heterogeneous structural nano sheet materials, preparation method and applications, using kind of a two-step method preparation, in closed high-temperature high-pressure reaction kettle, using secondary distilled water as reaction dissolvent, six water nickel nitrates are added, nine water ferric nitrates, urea is uniformly mixed, heating, it generates a hyperbaric environment and prepares ferronickel duplex metal hydroxide nanometer piece material, then, using secondary distilled water as reaction dissolvent, cerium nitrate hexahydrate is added, urea, the nickel foam of the ferronickel duplex metal hydroxide nanometer piece material contained is immersed into mixed solution, heating generates hyperbaric environment and is prepared.Preparation method product purity height, good dispersion, good crystalline and controllable, production cost is low, favorable reproducibility.Can not only have big specific surface area directly as the anode material of catalytic electrolysis water, provide bigger active area, to realize rapidly and efficiently electrolysis water, and realize long stability.
Description
Technical field
The invention belongs to technical field of nano material, are related to a kind of ferronickel double-metal hydroxide@ceria hetero-junctions
Structure nanometer sheet material, preparation method and applications.
Background technique
With a large amount of consumption of fossil fuel, the problem of energy shortages, is more prominent, find alternative clean energy resource at
For one of the hot subject of scientists study.Wherein, Hydrogen Energy is because its raw hydrogen source is wide, cleanliness without any pollution and energy density
The advantages that high and be concerned, current electrolysis water is a kind of most effective method of hydrogen manufacturing.
The anodic oxidation reactions (OER) of water are most one of basic reactions of water decomposition, but due to by O2Overpotential,
The influence of bath resistance and other factors, actual bath voltage are much higher than theoretical voltage.Currently, finding superior performance
Anode OER catalyst with reduce as much as possible Oxygen anodic evolution reaction overpotential, be electrolysed wate research hot spot be also that difficult point is asked
Topic.
The study found that Fe, Co, Ni mixed metal hydroxides show good OER activity in alkaline medium, so that
LDH material cheap and easy to get causes concern in OER reaction.
Summary of the invention
In order to solve the above technical problems, the present invention provides a kind of ferronickel double-metal hydroxide@ceria hetero-junctions
Structure nanometer sheet material and preparation method thereof, two-step method controlledly synthesis ferronickel double-metal hydroxide ceria heterojunction structure are received
Rice sheet material
The present invention also provides a kind of ferronickel double-metal hydroxide@ceria heterogeneous structural nano sheet materials in OER
The application of aspect.
A kind of preparation side of ferronickel double-metal hydroxide@ceria heterogeneous structural nano sheet material provided by the invention
Method, comprising the following steps:
A, nickel foam is cleaned by ultrasonic clean；
B, six water nickel nitrates, nine water ferric nitrates and urea are uniformly mixed, are mixed by being mixed in secondary distilled water
Liquid is placed in reaction kettle, and the nickel foam for cleaning rear surface cleaning is immersed in mixed liquor, and reaction kettle is closed, heating reaction, so
Afterwards, it is cooled to room temperature, cleans, drying at room temperature obtains the nickel foam for growing ferronickel duplex metal hydroxide nanometer piece；
C, cerium nitrate hexahydrate and urea are placed in secondary distilled water, stir, uniform mixed solution is formed, by step b
The nickel foam for growing ferronickel duplex metal hydroxide nanometer piece of preparation immerses in mixed solution, is put into reaction kettle, will be anti-
It answers kettle closed, after heating reaction, is cooled to room temperature, cleans, drying at room temperature obtains ferronickel double-metal hydroxide@titanium dioxide
Cerium heterogeneous structural nano sheet material.
Specific cleaning method in step a are as follows: the nickel foam that there is impurity on surface is sequentially placed into dilute hydrochloric acid, ethyl alcohol and secondary steaming
It is cleaned by ultrasonic respectively in distilled water, the ultrasonic cleaning time is respectively 10-20min.
The molar ratio of six water nickel nitrates, nine water ferric nitrates and urea used in step b is 1:1:4.
Six water nickel nitrates used concentration >=0.006mol L in mixed liquor in step b-1, nine water ferric nitrates are in mixed liquor
Concentration >=0.006mol L-1, urea concentration >=0.02mol L in mixed liquor-1, volume >=30mL of secondary distilled water used.
Heating reaction described in step b, which refers to, reacts 7-8h at 80-90 DEG C；
Cerium nitrate hexahydrate and the molar ratio of urea are 1:4 in step c.
Cerium nitrate hexahydrate concentration in mixed solution is 0.0067mol L in step c-1, urea is dense in mixed solution
Degree >=0.02mol L-1。
Heating reaction described in step c, which refers to, reacts 23-24h at 80-90 DEG C.
The ferronickel double-metal hydroxide@ceria heterogeneous structural nano sheet material prepared using the above method, with nickel
Iron double metal hydroxide nano piece is skeleton, cladding cerium oxide nanoparticles material outside it, the structure homoepitaxial,
Close-packed arrays have well-regulated 3-D heterojunction structure.
The present invention also provides a kind of answering for ferronickel double-metal hydroxide@ceria heterogeneous structural nano sheet material
With.The application of the specific anode material as catalytic electrolysis water.
Prepared ferronickel double-metal hydroxide@ceria heterogeneous structural nano sheet material is grown in nickel foam,
Can not only have big specific surface area directly as the anode material of catalytic electrolysis water, provide bigger active area, thus
It realizes rapidly and efficiently electrolysis water, and realizes long stability.
A kind of two-step method provided by the invention prepares ferronickel double-metal hydroxide@ceria heterogeneous structural nano sheet material
The method of material is, using secondary distilled water as reaction dissolvent, six water nitric acid to be added in closed high-temperature high-pressure reaction kettle
Nickel, nine water ferric nitrates, urea are uniformly mixed, and by heating reaction system, are generated a hyperbaric environment and are prepared ferronickel bimetallic
Then using secondary distilled water as reaction dissolvent, cerium nitrate hexahydrate, urea mixing is added in hydroxide nano sheet material
It is even, the nickel foam of the ferronickel duplex metal hydroxide nanometer piece material contained is immersed into mixed solution, by heating reaction system
The one kind for generating hyperbaric environment and preparing ferronickel double-metal hydroxide ceria heterogeneous structural nano sheet material has efficacious prescriptions
Method.
Compared with prior art, preparation method product purity height of the present invention, good dispersion, good crystalline and controllable, production
It is at low cost, favorable reproducibility.Prepared ferronickel double-metal hydroxide@ceria heterogeneous structural nano piece is grown in foam
On nickel, long cyclical stability, big specific surface area, higher surface can be realized directly as the anode material of electrolysis water
Activity has potential application in terms of catalytic electrolysis water.
Detailed description of the invention
Fig. 1 is the electron scanning micrograph (SEM) of ferronickel duplex metal hydroxide nanometer piece prepared by embodiment 1；
Fig. 2 is the scanning of ferronickel double-metal hydroxide@ceria heterogeneous structural nano sheet material prepared by embodiment 1
Electron micrograph (SEM)；
Fig. 3 is the transmission electron microscope photo (TEM) of ferronickel duplex metal hydroxide nanometer piece material prepared by embodiment 1；
Fig. 4 is the transmission of ferronickel double-metal hydroxide@ceria heterogeneous structural nano sheet material prepared by embodiment 1
Electromicroscopic photograph (TEM)；
Fig. 5 is the X-ray diffraction photo (XRD) of ferronickel duplex metal hydroxide nanometer piece prepared by embodiment 1；
Fig. 6 is that the X of ferronickel double-metal hydroxide@ceria heterogeneous structural nano sheet material prepared by embodiment 1 is penetrated
Line diffraction images (XRD)；
Fig. 7 is the electrochemical impedance spectroscopy (EIS) of the pure nickel foam of embodiment 1；
Fig. 8 is the electrochemical impedance spectroscopy (EIS) of ferronickel duplex metal hydroxide nanometer piece prepared by embodiment 1；
Fig. 9 is the electrification of ferronickel double-metal hydroxide@ceria heterogeneous structural nano sheet material prepared by embodiment 1
It learns impedance spectrum (EIS)；
Figure 10 is that the oxygen evolution of the pure nickel foam of embodiment 1 reacts the comparison song of (OER) linear sweep voltammetry test
Line (LSV)；
Figure 11 is that the oxygen evolution of ferronickel duplex metal hydroxide nanometer piece material prepared by embodiment 1 reacts (OER) line
Property scanning voltammetry test correlation curve (LSV)；
Figure 12 is the oxygen of ferronickel double-metal hydroxide@ceria heterogeneous structural nano sheet material prepared by embodiment 1
The correlation curve (LSV) of gas evolution reaction (OER) linear sweep voltammetry test.
Figure 13 is following for ferronickel double-metal hydroxide@ceria heterogeneous structural nano sheet material prepared by embodiment 1
Ring volt-ampere curve (CV).
Figure 14 is the perseverance of ferronickel double-metal hydroxide@ceria heterogeneous structural nano sheet material prepared by embodiment 1
Current charging and discharging curve.
Specific embodiment
Embodiment 1
A kind of preparation method of ferronickel double-metal hydroxide@ceria heterogeneous structural nano sheet material, including it is following
Step:
A, the nickel foam that there is impurity on surface is sequentially placed into hydrochloric acid, ethyl alcohol, be cleaned by ultrasonic in secondary distilled water, every time
Clean 20min；
B, six water nickel nitrate of 0.2mmol, nine water ferric nitrate of 0.2mmol and 0.8mmol urea are placed in 30mL second distillation
It mixes, is uniformly placed in 60mL reaction kettle in water, the nickel foam after step a cleaning is immersed in mixed liquor, reaction kettle is poured into
In, kettle cover is tightened, 8h is reacted at 90 DEG C, takes out reaction kettle cooled to room temperature, is successively rinsed with ethyl alcohol, secondary distilled water
Completely, drying at room temperature obtains the nickel foam for growing ferronickel duplex metal hydroxide nanometer piece material.
C, by 0.2mmol cerium nitrate hexahydrate, the dissolution of 0.8mmol urea and in 30mL secondary distilled water, magnetic agitation
20min forms uniform mixed solution, the bubble for growing ferronickel duplex metal hydroxide nanometer piece material prepared by step b
Foam nickel immerses mixed solution, is placed in reaction kettle, and reaction kettle is closed, reacts for 24 hours, is cooled to room temperature at 90 DEG C, ethyl alcohol is clear
It washes, drying at room temperature, obtains ferronickel double-metal hydroxide@ceria heterogeneous structural nano sheet material.
The ferronickel double-metal hydroxide@ceria heterogeneous structural nano sheet material of above method preparation, it is double with ferronickel
Metal hydroxides nanometer sheet is skeleton, coats cerium oxide nanoparticles material outside it, the structure homoepitaxial, close
Arrangement, has well-regulated 3-D heterojunction structure.
Embodiment 2
A kind of application of ferronickel double-metal hydroxide@ceria heterogeneous structural nano sheet material.It is specific to be used as catalysis
The application of the anode material of electrolysis water.
A kind of anode of electrolytic water electrode, the ferronickel double-metal hydroxide@ceria prepared using above-described embodiment 1 are different
The preparation of matter structure nano sheet material.
Ferronickel double-metal hydroxide@ceria heterogeneous structural nano sheet material prepared by embodiment 1 is in electrolysis water side
The application in face:
Impedance value test: taking 10mL 1mol/L NaOH solution to be put into electrolytic cell as electrolyte solution, respectively will be pure
Nickel foam, embodiment 1 prepare ferronickel double-metal hydroxide and ferronickel double-metal hydroxide@ceria heterojunction structure
Nanometer sheet material is working electrode, is to electrode with Pt electrodes, and Ag/AgCl electrode is reference electrode, obtains impedance diagram, is such as schemed
7, shown in Fig. 8, Fig. 9, from impedance diagram comparison it can be seen that ferronickel double-metal hydroxide@ceria heterogeneous structural nano piece is multiple
Condensation material has smaller impedance value.
OER catalytic activity test: after taking 10mL 1mol/L NaOH solution to be passed through oxygen 30 minutes, as electrolyte solution
It is put into electrolytic cell, is prepared by ferronickel duplex metal hydroxide nanometer piece material, the step c of the step b preparation in embodiment 1
Ferronickel double-metal hydroxide@ceria heterogeneous structural nano sheet material and nickel foam are respectively as working electrode, with Pt
Silk electrode is to electrode, and Ag/AgCl electrode is reference electrode, is 5mV s sweeping speed-1, voltage range be 0-1.0V when it is linear
Voltammetry curve is scanned, as shown in Figure 10, Figure 11 and Figure 12, it can be seen from the figure that being compared to pure nickel foam and single
Ferronickel duplex metal hydroxide nanometer piece, ferronickel double-metal hydroxide@ceria heterogeneous structural nano piece composite material
When as OER catalyst, smaller overpotential is needed, illustrates ferronickel double-metal hydroxide@ceria heterogeneous structural nano
Piece composite material is a kind of efficient OER catalyst.
Embodiment 3
A kind of application of ferronickel double-metal hydroxide@ceria heterogeneous structural nano sheet material.Specifically as super
The application of capacitor electrode material.
A kind of supercapacitor working electrode, the ferronickel double-metal hydroxide@titanium dioxide prepared using above-described embodiment 1
The preparation of cerium heterogeneous structural nano sheet material.
Ferronickel double-metal hydroxide@ceria heterogeneous structural nano sheet material prepared by embodiment 1 is in super capacitor
Application in terms of device:
10mL 1mol/L NaOH solution is taken to be put into electrolytic cell as electrolyte solution, the nickel that will be prepared in embodiment 1
Iron double metal hydroxide@ceria heterogeneous structural nano sheet material is followed successively by 5mV s as working electrode, sweeping speed-1、
10mV s-1、20mV s-1、30mV s-1、50mV s-1、70mV s-1、100mV s-1When the cyclic voltammetry curve that measures, such as scheme
13.Schemed from CV as can be seen that with the increase voltage linear relationship for sweeping speed.
10mL 1mol/L NaOH solution is taken to be put into electrolytic cell as electrolyte solution, the nickel that will be prepared in embodiment 1
Iron double metal hydroxide@ceria heterogeneous structural nano sheet material obtains 1A g as working electrode, test-1、2A g-1、
3A g-1、5A g-1、7A g-1、10Ag-1When constant current charge-discharge curve, such as Figure 14.From charging and discharging curve it can be concluded that ferronickel
Double-metal hydroxide@ceria heterogeneous structural nano sheet material is very big compared to other materials capacity as electrode, passes through meter
It calculates in 1A g-1When, maximum capacitance is up to 1306.9F g-1。
Claims (10)
1. a kind of preparation method of ferronickel double-metal hydroxide@ceria heterogeneous structural nano sheet material, which is characterized in that
The preparation method comprises the following steps:
A, nickel foam is cleaned by ultrasonic clean；
B, six water nickel nitrates, nine water ferric nitrates and urea are mixed in secondary distilled water, are uniformly mixed, obtain mixed liquor, set
In reaction kettle, the nickel foam for cleaning rear surface cleaning is immersed in mixed liquor, reaction kettle is closed, heating reaction, then, cooling
To room temperature, cleaning, drying at room temperature obtains the nickel foam for growing ferronickel duplex metal hydroxide nanometer piece；
C, cerium nitrate hexahydrate and urea are placed in secondary distilled water, stir, forms uniform mixed solution, is prepared by step b
Grow ferronickel duplex metal hydroxide nanometer piece nickel foam immerse mixed solution in, be put into reaction kettle, by reaction kettle
It is closed, it after heating reaction, is cooled to room temperature, cleans, it is different to obtain ferronickel double-metal hydroxide@ceria for drying at room temperature
Matter structure nano sheet material.
2. preparation method according to claim 1, which is characterized in that six water nickel nitrates used in step b are in mixed liquor
Concentration >=0.006 mol L-1, nine water ferric nitrates concentration >=0.006 mol L in mixed liquor-1, urea concentration in mixed liquor
≥0.02 mol L-1, volume >=30 mL of secondary distilled water used.
3. preparation method according to claim 1 or 2, which is characterized in that six water nickel nitrate used, nine water ferric nitrates, urine
The molar ratio of element is 1:1:4.
4. preparation method according to claim 1 or 2, which is characterized in that heating reaction described in step b refers to
7-8 h is reacted at 80-90 DEG C.
5. preparation method according to claim 1 or 2, which is characterized in that cerium nitrate hexahydrate used is molten in mixing in step c
Concentration is 0.006 mol L in liquid-1, concentration >=0.02 mol L of the urea in mixed solution-1。
6. preparation method according to claim 1 or 2, which is characterized in that mole of cerium nitrate hexahydrate in step c, urea
Than for 1:4.
7. preparation method according to claim 1 or 2, which is characterized in that heating reaction described in step c refers in 80-
23-24 h is reacted at 90 DEG C.
8. ferronickel double-metal hydroxide@ceria prepared by the preparation method of any one of claim 1-7 a kind of is heterogeneous
Structure nano sheet material.
It is urged 9. a kind of ferronickel double-metal hydroxide@ceria heterogeneous structural nano sheet material according to any one of claims 8 is used as
Change the application of the anode material of electrolysis water.
10. a kind of ferronickel double-metal hydroxide@ceria heterogeneous structural nano sheet material according to any one of claims 8 is as super
The application of the electrode material of grade capacitor.
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| CN109234755B (en) * | 2018-10-30 | 2020-11-03 | 江苏大学 | Layered double-metal hydroxide composite structure electrocatalyst and preparation method thereof |
| CN110354862B (en) * | 2019-08-14 | 2021-08-31 | 福州大学 | Method for in-situ modification of three-dimensional nickel-iron hydrotalcite electrocatalytic oxygen evolution electrode by aid of cerium ions on surface of foamed nickel substrate |
| CN111871426B (en) * | 2020-06-11 | 2023-08-29 | 安徽师范大学 | Pd nanoparticle-supported nickel-iron double hydroxide nanosheet array structure material, preparation method and application thereof |
| JP2022025951A (en) | 2020-07-30 | 2022-02-10 | 国立大学法人京都大学 | Alkaline water electrolysis anode and production method thereof |
| CN112481640B (en) * | 2020-12-01 | 2022-02-15 | 北京师范大学 | NiFe-LDH@CoSx/NF composite material and preparation method and application thereof |
| CN114487052B (en) * | 2022-01-07 | 2023-05-12 | 武汉轻工大学 | Preparation method and application of high-salt food heavy metal detection electrode |
| CN114318365B (en) * | 2022-02-11 | 2023-02-28 | 江西省科学院能源研究所 | Cobalt-vanadium-iron ternary metal water electrolysis catalyst and preparation method and application thereof |
| CN114477317B (en) * | 2022-03-07 | 2022-08-26 | 东北石油大学 | Needle-shaped nano iron-based double hydroxide and application thereof in regulating and controlling selectivity of oil shale pyrolysis product at low temperature |
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