CN108950596A - The methods and applications of the cheap efficient elctro-catalyst of ferronickel nano-chip arrays are synthesized under a kind of normal temperature and pressure - Google Patents
The methods and applications of the cheap efficient elctro-catalyst of ferronickel nano-chip arrays are synthesized under a kind of normal temperature and pressure Download PDFInfo
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Abstract
The methods and applications of the cheap efficient elctro-catalyst of ferronickel nano-chip arrays are synthesized under a kind of normal temperature and pressure, it is related to a kind of methods and applications of synthesizing efficient elctro-catalyst.It is noble metal the invention aims to solve the oxygen evolution reaction catalysts of existing commercialization, price is high and stability is poor, and large-scale application is restricted and the synthesis condition of existing ferronickel catalyst harshness, complex process, it is at high cost, the problem of seriously restricting its large-scale production and apply.Method: the one, pretreatment of nickel foam；Two, ferrous solution is prepared；Three, it impregnates, obtains the efficient elctro-catalyst of ferronickel nano-chip arrays.The present invention can be mass-produced, and can be used to produce the efficient elctro-catalyst of ferronickel nano-chip arrays of different size, be suitble to business application, more adapt to industrial needs.The present invention can get the efficient elctro-catalyst of ferronickel nano-chip arrays.
Description
Technical field
The present invention relates to a kind of methods and applications of synthesizing efficient elctro-catalyst.
Background technique
Global energy problem and along with the influence of the severe environments as caused by fossil energy exhaustive exploitation pierced
The research activities of nowadays development cleaning and sustainable energy is swashed.Due to high-energy density and carbon-free characteristic, hydrogen is considered
Future promises to be the substitute of carbon-based fossil energy.Last decade, among a variety of methods for producing hydrogen, by Driven by Solar Energy
Alkaline electrolyte in electrolysis aquatic products hydrogen obtained a large amount of concerns.During electrolysis water, water be both unique raw material and
Unique by-product, production method is environmentally friendly, institute's hydrogen producing purity is high.Currently, the work of more and more reports concentrates on
The hydrolysis train of efficient chargeable zinc-air battery power supply is designed for producing renewable energy industry.In view of zinc
Air cell and hydrolysis system require oxygen evolution reaction (OER), and this heterozygosis system than it is above-mentioned refer to by primary energy
The device of source driving hydrolysis is more feasible.However, because the electronics transfer of multistage proton coupling, oxygen evolution reaction dynamic process are slow
It is stagnant, profoundly affect the efficiency of hydrolysis and zinc-air battery.Therefore, highly active catalytic material is explored and designs to go to promote analysis oxygen anti-
Reply reduces overpotential and the energy efficiency of promotion overall process is of great significance.Commercial oxygen evolution reaction catalysts are at present
Precious metal such as iridium dioxide and ruthenic oxide, however, price is high and stability is poor because these substance earth's surface reserves are few, it is big
The application of scale receives very big restriction.In order to solve this problem, scientific research circle puts into huge effort and goes to develop excellent analysis
VPO catalysts substitute, ferronickel have many advantages, such as low cost, intrinsic high catalytic activity and rich reserves.In view of this, ferronickel oxygen
The oxygen evolution reaction catalysts of compound or hydroxide as mark post receive very in hydrolysis and metal aeration cell field
Big concern.But this kind of material reported at present, the environment such as high temperature, high pressure or electric field are needed, manufacturing process is complicated, cost
It is higher, seriously constrain its large-scale production and application.It is computed every square li of LDH/CF of the Cu@NiFe of existing method preparation
The cost of rice is about 2.235 dollars, and the cost for preparing NiFe-MOF/NF is big relative to the cost for preparing Cu@NiFe LDH/CF
It is big to reduce, however the cost for preparing NiFe-MOF/NF every square centimeter still needs about 0.0542 dollar.Production cost is reduced to
Minimum, process conditions are most simplified, these should be considered as a whole to allow ferronickel base anode material closer to applied to industrialization
Electrolysis water.
Summary of the invention
It is noble metal, price height and stability the invention aims to solve the oxygen evolution reaction catalysts of existing commercialization
Difference, large-scale application be restricted with the synthesis condition of existing ferronickel catalyst harshness, complex process is at high cost, serious to restrict
It is mass produced and the problem of application, and provides and synthesize cheap ferronickel nano-chip arrays efficient electric under a kind of normal temperature and pressure and urge
The methods and applications of agent.
A kind of method that the cheap efficient elctro-catalyst of ferronickel nano-chip arrays is synthesized under normal temperature and pressure, is according to the following steps
It completes:
One, the pretreatment of nickel foam:
Commercialized nickel foam is immersed in 5min~10min in the dilute hydrochloric acid that concentration is 2mol/L~4mol/L, is taken out
It is rinsed 3 times~5 times using dehydrated alcohol first afterwards, reuses distilled water flushing 3 times~5 times, obtain deimpurity nickel foam；
Two, ferrous solution is prepared:
By iron salt dissolved into deionized water, then ultrasonic 5min~10min is carried out, obtains iron salt solutions；
The concentration of iron salt solutions described in step 2 is 100mmol/L~300mmol/L；
Three, it impregnates:
Deimpurity nickel foam will be gone to be immersed in 1h~10h in iron salt solutions at room temperature, rushed after taking-up using deionized water
It washes 3 times~5 times, obtains the efficient elctro-catalyst of ferronickel nano-chip arrays.
Commercialized nickel foam described in further step one with a thickness of 0.5mm~1mm, aperture is 1 μm~100
μm。
Molysite described in further step two is Fe(NO3)39H2O.
Ultrasonic power described in further step two is 500W~700W.
Commercialized nickel foam is immersed in the dilute hydrochloric acid that concentration is 2mol/L~3mol/L in further step one
5min~10min is rinsed 3 times~4 times first using dehydrated alcohol after taking-up, is reused distilled water flushing 3 times~4 times, obtain
Go deimpurity nickel foam.
The concentration of iron salt solutions described in further step two is 100mmol/L~150mmol/L.
The concentration of iron salt solutions described in further step two is 200mmol/L~300mmol/L.
Deimpurity nickel foam will be gone to be immersed in 1h~5h in iron salt solutions at room temperature in further step three, after taking-up
It is rinsed 3 times~4 times using deionized water, obtains the efficient elctro-catalyst of ferronickel nano-chip arrays.
Deimpurity nickel foam will be gone to be immersed in 7h~8h in iron salt solutions at room temperature in further step three, after taking-up
It is rinsed 3 times~4 times using deionized water, obtains the efficient elctro-catalyst of ferronickel nano-chip arrays.
The efficient elctro-catalyst of ferronickel nano-chip arrays is used for the electrolysis water oxygen evolution reaction being catalyzed in alkaline environment.
The principle of the present invention:
It the present invention is based on redox reaction and codeposition reactions principle, is sent out between nickel foam and ferric ion first
Redox reaction is given birth to, then, codeposition reactions have occurred in ferrous ion, ferric ion and nickel ion, in nickel foam
Unique nickel iron hydroxide nano-chip arrays, the i.e. efficient elctro-catalyst of ferronickel nano-chip arrays are generated on skeleton.Iron is mixed
Enter in depth to improve electron transfer rate and produce synergistic effect with nickel site, catalytic performance improves on a large scale.Pass through
This method can be realized and synthesize the inexpensively efficient elctro-catalyst of ferronickel nano-chip arrays based on nickel foam under normal temperature and pressure, beats
The restriction that tradition needs the external conditions such as high temperature, high pressure, electric field is broken, it is only necessary to impregnate at room temperature, greatly reduce cost simultaneously
Realize high catalytic performance.In addition, this efficient elctro-catalyst can be driven in conjunction with evolving hydrogen reaction catalyst by solar energy equipment
It is dynamic, the efficiency of electrolysis aquatic products hydrogen is improved, really realizes the sustainable Hydrogen Energy production of green.
Advantages of the present invention:
One, the efficient elctro-catalyst of ferronickel nano-chip arrays prepared by the present invention is illustrated analyses under harsh alkaline condition
Oxygen reacting catalytic performance significantly improves；When oxygen evolution reaction current density reaches 50mA/cm2And 500mA/cm2When, overpotential is only
Respectively 240mV~250mV and 290mV~300mV, and Tafel slope is down to 46.7.Oxygen evolution reaction performance fabulous in this way
It can be attributed to the fact that the efficient utilization for the satisfactory electrical conductivity and active site that the raising of catalytic activity, ferronickel collaboration generate, and
And the abundant nano-pore on the open space and nanometer sheet before ferronickel nano array structure, nanometer sheet is conducive to the infiltration of electrolyte
Saturating and oxygen diffusion；
Two, the present invention is low in cost, it is only necessary to commercialized nickel foam and iron salt solutions, and iron salt solutions can be repeatedly sharp
With therefore, the estimated cost every square centimeter of the efficient elctro-catalyst of ferronickel nano-chip arrays prepared by the present invention is well below it
He it is existing it has been reported that iron content oxygen evolution reaction catalysts, the efficient elctro-catalyst of ferronickel nano-chip arrays prepared by the present invention it is every
Square centimeter estimated cost is about 0.0187 dollar；
Three, present invention process is simple, it is only necessary to simply handle commercialized nickel foam, then be immersed directly in iron
In salting liquid, process flow is simple to operation；
Four, energy conservation and environmental protection of the present invention is not required to heating, pressurization or electric energy, it is only necessary to impregnate under room temperature；Noxious material is not generated,
Iron salt solutions can be recycled；
Five, the present invention can be mass-produced, and can be used to produce the efficient electro-catalysis of ferronickel nano-chip arrays of different size
Agent is suitble to business application, more adapts to industrial needs.
The present invention can get the efficient elctro-catalyst of ferronickel nano-chip arrays.
Detailed description of the invention
Fig. 1 is 1100 times of amplification of the SEM figure of the efficient elctro-catalyst of ferronickel nano-chip arrays prepared by embodiment one；
Fig. 2 is 1100 times of amplification of the TEM figure of the efficient elctro-catalyst of ferronickel nano-chip arrays prepared by embodiment one；
Fig. 3 is the J-V curve graph that embodiment two measures, the 1 ferronickel nano-chip arrays height to be prepared with embodiment one in figure
Effect elctro-catalyst is the J-V curve that working electrode measures, and 2 be the J-V curve measured using nickel foam as working electrode；
Fig. 4 is the Tafel slope curve graph that embodiment two measures；
Fig. 5 is curve of stability figure when persistently exporting 100 milliamperes of electric currents every square centimeter in embodiment two；
Fig. 6 is the digital photograph of the efficient elctro-catalyst of ferronickel nano-chip arrays of different size specification prepared by embodiment three
Figure；
Fig. 7 is that a length of 20cm is utilized in embodiment three, ferronickel nanometer sheet prepared by the commercialized nickel foam that width is 18cm
The SEM of the efficient elctro-catalyst of array schemes；
Fig. 8 is the J-V curve graph that measures of embodiment three, and 1 is utilizes a length of 1cm in figure, and width is the commercialized foam of 1cm
The efficient elctro-catalyst of ferronickel nano-chip arrays of nickel preparation is the J-V curve that working electrode measures, and 2 is utilize a length of 20cm, wide
It is that the J-V that working electrode measures is bent for the efficient elctro-catalyst of ferronickel nano-chip arrays prepared by the commercialized nickel foam of 18cm
Line；
Fig. 9 is the test result figure of example IV；
Figure 10 is the enlarged drawing of electrolytic cell in Fig. 9.
Specific embodiment
Specific embodiment 1: present embodiment is that synthesize cheap ferronickel nano-chip arrays under a kind of normal temperature and pressure efficient
The method of elctro-catalyst is completed by the following steps:
One, the pretreatment of nickel foam:
Commercialized nickel foam is immersed in 5min~10min in the dilute hydrochloric acid that concentration is 2mol/L~4mol/L, is taken out
It is rinsed 3 times~5 times using dehydrated alcohol first afterwards, reuses distilled water flushing 3 times~5 times, obtain deimpurity nickel foam；
Two, ferrous solution is prepared:
By iron salt dissolved into deionized water, then ultrasonic 5min~10min is carried out, obtains iron salt solutions；
The concentration of iron salt solutions described in step 2 is 100mmol/L~300mmol/L；
Three, it impregnates:
Deimpurity nickel foam will be gone to be immersed in 1h~10h in iron salt solutions at room temperature, rushed after taking-up using deionized water
It washes 3 times~5 times, obtains the efficient elctro-catalyst of ferronickel nano-chip arrays.
Needing to carry out commercialized nickel foam pretreatment in present embodiment step 1 is because that buys is commercialized
There is a small amounts nickel layer on surface to nickel foam during production and transportation, and surface is there are also the anti-oxidation substance that producer is applied,
These substances meeting blocking reaction, influences the synthesis of nano-chip arrays, therefore should remove the surface impurity of commercialized nickel foam.
The advantages of present embodiment:
One, the efficient elctro-catalyst of ferronickel nano-chip arrays of present embodiment preparation is illustrated in harsh alkaline condition
Lower oxygen evolution reaction catalytic performance significantly improves；When oxygen evolution reaction current density reaches 50mA/cm2And 500mA/cm2When, it is excessively electric
Position is only respectively 240mV~250mV and 290mV~300mV, and Tafel slope is down to 46.7.Oxygen evolution reaction fabulous in this way
Performance can be attributed to the fact that the efficient benefit for the satisfactory electrical conductivity and active site that the raising of catalytic activity, ferronickel collaboration generate
With, and the abundant nano-pore on the open space and nanometer sheet before ferronickel nano array structure, nanometer sheet is conducive to be electrolysed
The infiltration of liquid and the diffusion of oxygen；
Two, present embodiment is low in cost, it is only necessary to commercialized nickel foam and iron salt solutions, and iron salt solutions can be repeatedly
It utilizes, therefore, the estimated cost every square centimeter of the efficient elctro-catalyst of ferronickel nano-chip arrays of present embodiment preparation is much
It is existing lower than other it has been reported that iron content oxygen evolution reaction catalysts, the efficient electro-catalysis of ferronickel nano-chip arrays prepared by the present invention
The estimated cost every square centimeter of agent is about 0.0187 dollar；
Three, present embodiment simple process, it is only necessary to commercialized nickel foam simply be handled, then directly impregnated
In iron salt solutions, process flow is simple to operation；
Four, present embodiment energy conservation and environmental protection is not required to heating, pressurization or electric energy, it is only necessary to impregnate under room temperature；Do not generate Toxic
Matter, iron salt solutions can be recycled；
Five, present embodiment can be mass-produced, and can be used to produce the ferronickel nano-chip arrays efficient electric of different size
Catalyst is suitble to business application, more adapts to industrial needs.
Present embodiment can get the efficient elctro-catalyst of ferronickel nano-chip arrays.
Specific embodiment 2: the differences between this implementation mode and the specific implementation mode are that: business described in step 1
The nickel foam of change with a thickness of 0.5mm~1mm, aperture is 1 μm~100 μm.Other steps are same as the specific embodiment one.
Specific embodiment 3: one of present embodiment and specific embodiment one or two difference are: institute in step 2
The molysite stated is Fe(NO3)39H2O.Other steps are the same as one or two specific embodiments.
Fe(NO3)39H2O is that analysis is pure in present embodiment.
Specific embodiment 4: one of present embodiment and specific embodiment one to three difference are: institute in step 2
The ultrasonic power stated is 500W~700W.Other steps are identical as specific embodiment one to three.
Specific embodiment 5: one of present embodiment and specific embodiment one to four difference are: will in step 1
Commercialized nickel foam is immersed in 5min~10min in the dilute hydrochloric acid that concentration is 2mol/L~3mol/L, uses first after taking-up
Dehydrated alcohol rinses 3 times~4 times, reuses distilled water flushing 3 times~4 times, obtains deimpurity nickel foam.Other steps with
Specific embodiment one to four is identical.
Specific embodiment 6: one of present embodiment and specific embodiment one to five difference are: institute in step 2
The concentration for the iron salt solutions stated is 100mmol/L~150mmol/L.Other steps are identical as specific embodiment one to five.
Specific embodiment 7: one of present embodiment and specific embodiment one to six difference are: institute in step 2
The concentration for the iron salt solutions stated is 200mmol/L~300mmol/L.Other steps are identical as specific embodiment one to six.
Specific embodiment 8: one of present embodiment and specific embodiment one to seven difference are: room in step 3
Deimpurity nickel foam will be gone to be immersed in 1h~5h in iron salt solutions under temperature, be rinsed 3 times~4 times after taking-up using deionized water,
Obtain the efficient elctro-catalyst of ferronickel nano-chip arrays.Other steps are identical as specific embodiment one to seven.
Specific embodiment 9: one of present embodiment and specific embodiment one to eight difference are: room in step 3
Deimpurity nickel foam will be gone to be immersed in 7h~8h in iron salt solutions under temperature, be rinsed 3 times~4 times after taking-up using deionized water,
Obtain the efficient elctro-catalyst of ferronickel nano-chip arrays.Other steps are identical as specific embodiment one to eight.
Specific embodiment 10: one of present embodiment and specific embodiment one to nine difference are: will in step 1
Commercialized nickel foam is immersed in 5min in the dilute hydrochloric acid that concentration is 3mol/L, is rinsed 4 times using dehydrated alcohol first after taking-up,
It reuses distilled water flushing 4 times, obtains deimpurity nickel foam.Other steps are identical as specific embodiment one to nine.
Specific embodiment 11: one of present embodiment and specific embodiment one to ten difference are: in step 2
By iron salt dissolved into deionized water, then ultrasonic 8min is carried out, obtains iron salt solutions.Other steps and specific embodiment one to
Ten is identical.
Specific embodiment 12: present embodiment is with one to one of 11 difference of specific embodiment: step 2
Described in iron salt solutions concentration be 100mmol/L.Other steps are identical as specific embodiment one to 11.
Specific embodiment 13: present embodiment is with one to one of 12 difference of specific embodiment: step 3
In deimpurity nickel foam will be gone to be immersed in 7h in iron salt solutions at room temperature, after taking-up using deionized water rinse 4 times, obtain nickel
The efficient elctro-catalyst of iron nano-chip arrays.Other steps are identical as specific embodiment one to 12.
Specific embodiment 14: present embodiment is with one to one of 13 difference of specific embodiment: step 1
Described in commercialized nickel foam with a thickness of 0.8mm, aperture is 1 μm~50 μm.Other steps and specific embodiment one
It is identical to 13.
Specific embodiment 15: present embodiment is with one to one of 14 difference of specific embodiment: step 1
Described in commercialized nickel foam with a thickness of 0.5mm~1mm, aperture is 50 μm~100 μm.Other steps and specific implementation
Mode one to 14 is identical.
Beneficial effects of the present invention are verified using following embodiment:
Embodiment one: a kind of method that the cheap efficient elctro-catalyst of ferronickel nano-chip arrays is synthesized under normal temperature and pressure is
It completes according to the following steps:
One, the pretreatment of nickel foam:
Commercialized nickel foam is immersed in 8min in the dilute hydrochloric acid that concentration is 3mol/L, uses anhydrous second after taking-up first
Alcohol rinses 4 times, reuses distilled water flushing 4 times, obtains deimpurity nickel foam；
Commercialized nickel foam described in step 1 with a thickness of 0.5mm, aperture is 50 μm；
A length of 2cm of commercialized nickel foam described in step 1, width 3cm；
Two, ferrous solution is prepared:
By iron salt dissolved into deionized water, then ultrasonic 8min is carried out, obtains iron salt solutions；
The concentration of iron salt solutions described in step 2 is 100mmol/L；
Molysite described in step 2 is Fe(NO3)39H2O；
Ultrasonic power described in step 2 is 500W；
Three, it impregnates:
Deimpurity nickel foam will be gone to be immersed in 7h in iron salt solutions at room temperature, rinsed 4 times after taking-up using deionized water,
Obtain the efficient elctro-catalyst of ferronickel nano-chip arrays.
Fig. 1 is 1100 times of amplification of the SEM figure of the efficient elctro-catalyst of ferronickel nano-chip arrays prepared by embodiment one；
From fig. 1, it can be seen that the efficient elctro-catalyst of ferronickel nano-chip arrays prepared by embodiment one is amplifying 1100 times of rear surfaces
With uniform nano-chip arrays structure.
Fig. 2 is 1100 times of amplification of the TEM figure of the efficient elctro-catalyst of ferronickel nano-chip arrays prepared by embodiment one；
As can be seen from Figure 2, the ferronickel nano-chip arrays prepared using transmission electron microscope (TEM) observation embodiment one are efficient
Elctro-catalyst, still presentation laminated structure.
Embodiment two: the catalytic performance and stabilization of the efficient elctro-catalyst of ferronickel nano-chip arrays prepared by testing example one
Property:
The KOH solution of 1mol/L is prepared as electrolyte, electrolyte is added in three electrode electrolysers, with mercuric oxide electrode
For reference electrode, with coated graphite rod electrrode be to electrode, the efficient elctro-catalyst of ferronickel nano-chip arrays that is prepared with embodiment one and
Nickel foam is respectively working electrode, and each electrode is connected with electrochemical workstation, measures electrochemical data, such as Fig. 3~Fig. 5 institute
Show.
Fig. 3 is the J-V curve graph that embodiment two measures, the 1 ferronickel nano-chip arrays height to be prepared with embodiment one in figure
Effect elctro-catalyst is the J-V curve that working electrode measures, and 2 be the J-V curve measured using nickel foam as working electrode；
As can be seen from Figure 3, the efficient elctro-catalyst of ferronickel nano-chip arrays that prepared by embodiment one reaches 244mV in overpotential
When, current density can achieve 50mA cm-2。
Fig. 4 is the Tafel slope curve graph that embodiment two measures；
As can be seen from Figure 4, embodiment one prepare the efficient elctro-catalyst of ferronickel nano-chip arrays Tafel slope down to
46.7mV dec-1。
Fig. 5 is curve of stability figure when persistently exporting 100 milliamperes of electric currents every square centimeter in embodiment two；
As can be seen from Figure 5, in lasting output 100mAcm-2Current density when, embodiment one prepare ferronickel nanometer sheet battle array
Arranging efficient elctro-catalyst is still not in apparent decaying in 30 hours, and potential curve is basicly stable.
It follows that the ferronickel nanometer that the present invention in the case where cost declines to a great extent, is synthesized using method of the invention
The efficient elctro-catalyst of chip arrays still has preferable catalytic performance compared with newest homogeneous electrode.
Embodiment three: the large-scale production simulation of the efficient elctro-catalyst of ferronickel nano-chip arrays prepared by embodiment one:
The difference of the present embodiment and embodiment one are as follows: the present embodiment can choose the different commercialization of a variety of size specifications
Nickel foam prepare the efficient elctro-catalyst of ferronickel nano-chip arrays；It is individually below commercialized nickel foam described in the present embodiment
Size:
1., a length of 1cm, width 1cm of commercialized nickel foam；
2., a length of 2cm, width 2cm of commercialized nickel foam；
3., a length of 4cm, width 4cm of commercialized nickel foam；
4., a length of 7cm, width 7cm of commercialized nickel foam；
5., a length of 20cm, width 8cm of commercialized nickel foam；
6., a length of 20cm, width 18cm of commercialized nickel foam.
Other steps and parameter and embodiment one are all the same.
Fig. 6 is the digital photograph of the efficient elctro-catalyst of ferronickel nano-chip arrays of different size specification prepared by embodiment three
Figure；
Fig. 7 is that a length of 20cm is utilized in embodiment three, ferronickel nanometer sheet prepared by the commercialized nickel foam that width is 18cm
The SEM of the efficient elctro-catalyst of array schemes；
As can be seen from Figure 7, the surface of large-sized efficient elctro-catalyst of ferronickel nano-chip arrays is also uniform nanometer sheet battle array
Array structure.
The KOH solution of 1mol/L is prepared as electrolyte, electrolyte is added in three electrode electrolysers, with mercuric oxide electrode
It is to electrode with coated graphite rod electrrode, to utilize a length of 1cm in embodiment three, width is the commercialized foam of 1cm for reference electrode
The efficient elctro-catalyst of ferronickel nano-chip arrays and utilize a length of 20cm prepared by nickel, prepared by the commercialized nickel foam that width is 18cm
The efficient elctro-catalyst of ferronickel nano-chip arrays be respectively working electrode, each electrode is connected with electrochemical workstation, measures electricity
Chemical data, as shown in Figure 8.
Fig. 8 is the J-V curve graph that measures of embodiment three, and 1 is utilizes a length of 1cm in figure, and width is the commercialized foam of 1cm
The efficient elctro-catalyst of ferronickel nano-chip arrays of nickel preparation is the J-V curve that working electrode measures, and 2 is utilize a length of 20cm, wide
It is that the J-V that working electrode measures is bent for the efficient elctro-catalyst of ferronickel nano-chip arrays prepared by the commercialized nickel foam of 18cm
Line；
As it can be observed in the picture that the catalytic performance of the efficient elctro-catalyst of ferronickel nano-chip arrays of different size keeps almost the same.
Example IV: the Driven by Solar Energy of the efficient elctro-catalyst of ferronickel nano-chip arrays prepared by embodiment one:
The KOH solution of 1mol/L is prepared as electrolyte, ferronickel nano-chip arrays efficient electric prepared by embodiment one is urged
Agent forms bipolar electrode system as Oxygen anodic evolution catalysts, with nickel phosphide cathode hydrogen evolution catalysts, respectively and too
The positive and negative anodes connection of positive energy solar panel.Point is sent out using analog light source irradiation solar panel, while measuring institute using multimeter
Produce electricity gesture size.
Fig. 9 is the test result figure of example IV；
As can be seen from Figure 9, the solar panel of analog light source irradiation can produce enough potentials, drives in electrolytic cell and sends out
Raw electrolysis water reaction.
Figure 10 is the enlarged drawing of electrolytic cell in Fig. 9；
As can be seen from Figure 10, there is uniform bubble on the surface of Oxygen anodic evolution catalysts and cathode oxygen evolution reaction catalysts
It generates, it was demonstrated that this electrolytic water device can be driven by solar energy equipment, convert solar energy into Hydrogen Energy, really realize that green can
Lasting electrolysis aquatic products hydrogen.
Claims (10)
1. synthesizing the method for the cheap efficient elctro-catalyst of ferronickel nano-chip arrays under a kind of normal temperature and pressure, it is characterised in that a kind of
The method that the cheap efficient elctro-catalyst of ferronickel nano-chip arrays is synthesized under normal temperature and pressure is completed by the following steps:
One, the pretreatment of nickel foam:
Commercialized nickel foam is immersed in 5min~10min in the dilute hydrochloric acid that concentration is 2mol/L~4mol/L, it is first after taking-up
It is first rinsed 3 times~5 times using dehydrated alcohol, reuses distilled water flushing 3 times~5 times, obtain deimpurity nickel foam；
Two, ferrous solution is prepared:
By iron salt dissolved into deionized water, then ultrasonic 5min~10min is carried out, obtains iron salt solutions；
The concentration of iron salt solutions described in step 2 is 100mmol/L~300mmol/L；
Three, it impregnates:
Deimpurity nickel foam will be gone to be immersed in 1h~10h in iron salt solutions at room temperature, rinsed 3 times after taking-up using deionized water
~5 times, obtain the efficient elctro-catalyst of ferronickel nano-chip arrays.
2. synthesizing the cheap efficient elctro-catalyst of ferronickel nano-chip arrays under a kind of normal temperature and pressure according to claim 1
Method, it is characterised in that commercialized nickel foam described in step 1 with a thickness of 0.5mm~1mm, aperture is 1 μm~100 μ
m。
3. synthesizing the cheap efficient elctro-catalyst of ferronickel nano-chip arrays under a kind of normal temperature and pressure according to claim 1
Method, it is characterised in that molysite described in step 2 is Fe(NO3)39H2O.
4. synthesizing the cheap efficient elctro-catalyst of ferronickel nano-chip arrays under a kind of normal temperature and pressure according to claim 1
Method, it is characterised in that ultrasonic power described in step 2 is 500W~700W.
5. synthesizing the cheap efficient elctro-catalyst of ferronickel nano-chip arrays under a kind of normal temperature and pressure according to claim 1
Method, it is characterised in that commercialized nickel foam is immersed in the dilute hydrochloric acid that concentration is 2mol/L~3mol/L in step 1
5min~10min is rinsed 3 times~4 times first using dehydrated alcohol after taking-up, is reused distilled water flushing 3 times~4 times, obtain
Go deimpurity nickel foam.
6. synthesizing the cheap efficient elctro-catalyst of ferronickel nano-chip arrays under a kind of normal temperature and pressure according to claim 1
Method, it is characterised in that the concentration of iron salt solutions described in step 2 is 100mmol/L~150mmol/L.
7. synthesizing the cheap efficient elctro-catalyst of ferronickel nano-chip arrays under a kind of normal temperature and pressure according to claim 1
Method, it is characterised in that the concentration of iron salt solutions described in step 2 is 200mmol/L~300mmol/L.
8. synthesizing the cheap efficient elctro-catalyst of ferronickel nano-chip arrays under a kind of normal temperature and pressure according to claim 1
Method, it is characterised in that deimpurity nickel foam will be gone to be immersed in 1h~5h in iron salt solutions at room temperature in step 3, after taking-up
It is rinsed 3 times~4 times using deionized water, obtains the efficient elctro-catalyst of ferronickel nano-chip arrays.
9. synthesizing the cheap efficient elctro-catalyst of ferronickel nano-chip arrays under a kind of normal temperature and pressure according to claim 1
Method, it is characterised in that deimpurity nickel foam will be gone to be immersed in 7h~8h in iron salt solutions at room temperature in step 3, after taking-up
It is rinsed 3 times~4 times using deionized water, obtains the efficient elctro-catalyst of ferronickel nano-chip arrays.
10. synthesizing the cheap efficient elctro-catalyst of ferronickel nano-chip arrays under a kind of normal temperature and pressure as described in claim 1
Using, it is characterised in that the efficient elctro-catalyst of ferronickel nano-chip arrays is used for the electrolysis water oxygen evolution reaction being catalyzed in alkaline environment.
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