CN110124673A - A kind of boron induction amorphous layered double-hydroxide elctro-catalyst and its preparation and application - Google Patents
A kind of boron induction amorphous layered double-hydroxide elctro-catalyst and its preparation and application Download PDFInfo
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- CN110124673A CN110124673A CN201910430592.3A CN201910430592A CN110124673A CN 110124673 A CN110124673 A CN 110124673A CN 201910430592 A CN201910430592 A CN 201910430592A CN 110124673 A CN110124673 A CN 110124673A
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- elctro
- catalyst
- hydroxide
- boron
- layered double
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- 239000003054 catalyst Substances 0.000 title claims abstract description 91
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 title claims abstract description 39
- 229910052796 boron Inorganic materials 0.000 title claims abstract description 39
- 238000002360 preparation method Methods 0.000 title claims abstract description 28
- 230000006698 induction Effects 0.000 title claims abstract description 23
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 170
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 81
- 239000006260 foam Substances 0.000 claims abstract description 73
- 239000013078 crystal Substances 0.000 claims abstract description 40
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 38
- 239000001257 hydrogen Substances 0.000 claims abstract description 38
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 36
- 238000006243 chemical reaction Methods 0.000 claims abstract description 31
- 238000000034 method Methods 0.000 claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims abstract description 29
- 229910052723 transition metal Inorganic materials 0.000 claims abstract description 28
- 230000003197 catalytic effect Effects 0.000 claims abstract description 13
- 150000003624 transition metals Chemical class 0.000 claims abstract description 13
- 238000011065 in-situ storage Methods 0.000 claims abstract description 12
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 35
- 239000008367 deionised water Substances 0.000 claims description 21
- 229910021641 deionized water Inorganic materials 0.000 claims description 21
- 239000000243 solution Substances 0.000 claims description 20
- 235000019441 ethanol Nutrition 0.000 claims description 19
- UKWHYYKOEPRTIC-UHFFFAOYSA-N mercury(II) oxide Inorganic materials [Hg]=O UKWHYYKOEPRTIC-UHFFFAOYSA-N 0.000 claims description 17
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 16
- -1 Transition metal salt Chemical class 0.000 claims description 15
- 239000012046 mixed solvent Substances 0.000 claims description 12
- 238000002604 ultrasonography Methods 0.000 claims description 11
- 235000010299 hexamethylene tetramine Nutrition 0.000 claims description 10
- VKYKSIONXSXAKP-UHFFFAOYSA-N hexamethylenetetramine Chemical compound C1N(C2)CN3CN1CN2C3 VKYKSIONXSXAKP-UHFFFAOYSA-N 0.000 claims description 10
- 229960004011 methenamine Drugs 0.000 claims description 10
- 239000011259 mixed solution Substances 0.000 claims description 10
- 229940101209 mercuric oxide Drugs 0.000 claims description 9
- 238000005868 electrolysis reaction Methods 0.000 claims description 8
- 229910002651 NO3 Inorganic materials 0.000 claims description 7
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims description 7
- 230000015572 biosynthetic process Effects 0.000 claims description 7
- 238000003786 synthesis reaction Methods 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 6
- 229910000033 sodium borohydride Inorganic materials 0.000 claims description 3
- 239000012279 sodium borohydride Substances 0.000 claims description 3
- 150000001868 cobalt Chemical class 0.000 claims description 2
- 150000002815 nickel Chemical class 0.000 claims description 2
- 238000007781 pre-processing Methods 0.000 claims description 2
- QYZBCWXZSYTIOY-UHFFFAOYSA-N Mercuric oxide Chemical compound [O-2].[Hg+2] QYZBCWXZSYTIOY-UHFFFAOYSA-N 0.000 claims 1
- 238000010348 incorporation Methods 0.000 abstract description 4
- 238000005260 corrosion Methods 0.000 abstract description 3
- 230000007797 corrosion Effects 0.000 abstract description 3
- 238000012546 transfer Methods 0.000 abstract description 2
- 229910003266 NiCo Inorganic materials 0.000 description 37
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 21
- 229910006030 NiCoCu Inorganic materials 0.000 description 8
- 238000012360 testing method Methods 0.000 description 8
- 239000000126 substance Substances 0.000 description 6
- 241000209094 Oryza Species 0.000 description 5
- 235000007164 Oryza sativa Nutrition 0.000 description 5
- QXZUUHYBWMWJHK-UHFFFAOYSA-N [Co].[Ni] Chemical compound [Co].[Ni] QXZUUHYBWMWJHK-UHFFFAOYSA-N 0.000 description 5
- 125000004429 atom Chemical group 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 5
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 5
- 238000001035 drying Methods 0.000 description 5
- 230000005611 electricity Effects 0.000 description 5
- 235000009566 rice Nutrition 0.000 description 5
- VDGMIGHRDCJLMN-UHFFFAOYSA-N [Cu].[Co].[Ni] Chemical compound [Cu].[Co].[Ni] VDGMIGHRDCJLMN-UHFFFAOYSA-N 0.000 description 4
- 229910017052 cobalt Inorganic materials 0.000 description 4
- 239000010941 cobalt Substances 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 230000001939 inductive effect Effects 0.000 description 4
- 238000009776 industrial production Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- NQTSTBMCCAVWOS-UHFFFAOYSA-N 1-dimethoxyphosphoryl-3-phenoxypropan-2-one Chemical compound COP(=O)(OC)CC(=O)COC1=CC=CC=C1 NQTSTBMCCAVWOS-UHFFFAOYSA-N 0.000 description 2
- 239000010953 base metal Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 150000004679 hydroxides Chemical class 0.000 description 2
- 238000004502 linear sweep voltammetry Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- KBJMLQFLOWQJNF-UHFFFAOYSA-N nickel(ii) nitrate Chemical compound [Ni+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O KBJMLQFLOWQJNF-UHFFFAOYSA-N 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000000101 transmission high energy electron diffraction Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- UFMZWBIQTDUYBN-UHFFFAOYSA-N cobalt dinitrate Chemical compound [Co+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O UFMZWBIQTDUYBN-UHFFFAOYSA-N 0.000 description 1
- 229910001981 cobalt nitrate Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- XTVVROIMIGLXTD-UHFFFAOYSA-N copper(II) nitrate Chemical compound [Cu+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O XTVVROIMIGLXTD-UHFFFAOYSA-N 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000002242 deionisation method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000002003 electron diffraction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 1
- 229920005596 polymer binder Polymers 0.000 description 1
- 239000002491 polymer binding agent Substances 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000004611 spectroscopical analysis Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/74—Iron group metals
- B01J23/75—Cobalt
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/74—Iron group metals
- B01J23/755—Nickel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/20—Catalysts, in general, characterised by their form or physical properties characterised by their non-solid state
- B01J35/23—Catalysts, in general, characterised by their form or physical properties characterised by their non-solid state in a colloidal state
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
- B01J35/33—Electric or magnetic properties
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
- C25B1/01—Products
- C25B1/02—Hydrogen or oxygen
- C25B1/04—Hydrogen or oxygen by electrolysis of water
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B11/00—Electrodes; Manufacture thereof not otherwise provided for
- C25B11/04—Electrodes; Manufacture thereof not otherwise provided for characterised by the material
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Electrochemistry (AREA)
- Metallurgy (AREA)
- Inorganic Chemistry (AREA)
- Catalysts (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
- Electrodes For Compound Or Non-Metal Manufacture (AREA)
Abstract
The present invention relates to a kind of boron induction amorphous layered double-hydroxide elctro-catalyst and its preparation and application, first with growth in situ method, transition metal stratiform double hydroxide nano piece crystal presoma is synthesized in foam nickel base, it is further by the method for room temperature boronation that crystal presoma is decrystallized, prepare the self-cradling type liberation of hydrogen catalyst of amorphous laminated double hydroxide nanometer piece.Compared with prior art, the present invention induces the decrystallized method of layered double-hydroxide crystal that the elctro-catalyst is made to possess more active sites, lower electronics transfer impedance and better corrosion resistance by incorporation boron atom, when the elctro-catalyst is in evolving hydrogen reaction, under conditions of extreme currents density, brilliant electro catalytic activity and stability can be shown.
Description
Technical field
The invention belongs to water electrolysis hydrogen production technical fields, are related to a kind of boron induction amorphous for evolving hydrogen reaction under high current
Unitary or polynary transition metal base laminated double hydroxide nanometer piece elctro-catalyst and its preparation and application.
Background technique
Hydrogen Energy as the ring in current renewable energy distribution system, on the one hand solve renewable energy source space and when
Between on the situation that is unevenly distributed；On the other hand, itself have many advantages, such as high-energy density and pure and fresh pollution-free, it can be effective
Substitute of the ground as traditional fossil energy.Preparation for hydrogen, electrolysis water are a kind of realities for meeting sustainable development requirement
With property technology, wherein liberation of hydrogen (HER) reaction is one of two half-reactions of its core.However, due to the thermodynamics of evolving hydrogen reaction
It is slower with dynamic process, need higher overpotential to transmit a certain amount of current density.In order to reduce the mistake on electrode
Potential, efficient new evolving hydrogen elctro-catalyst urgent need are developed, and to reduce reaction energy barrier, promote the exchange of electronics and proton
Process.Currently, the evolving hydrogen reaction elctro-catalyst as efficient business electrode is mainly noble metal platinum/carbon, although its catalytic performance
It is excellent efficient, but it is limited by the disadvantage that nature amount of storage is limited, with high costs, it can not heavy industrialization application.Therefore, it grinds
Study carefully personnel and needs to develop the simple base metal elctro-catalyst of low in cost, superior performance, synthesis technology.
In numerous base metal elctro-catalysts, 3d transition metal elctro-catalyst (such as Ni, Co) has liberation of hydrogen excessively electric
The low, efficient stable in position, it is low in cost the advantages that, especially transition metal base layered double-hydroxide due to its unique structure, urge
Change superior activity, preparation process to be simply concerned.But almost all of transition metal base layered double-hydroxide electricity is urged
Agent cannot show and keep excellent electrocatalytic hydrogen evolution performance under biggish current density.In addition more complicated preparation
Technique and expensive cost are not appropriate for being applied to large-scale industrial production and commercialization.
Summary of the invention
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide a kind of boron to induce amorphous layer
Shape double-hydroxide elctro-catalyst and its preparation and application.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of preparation method of boron induction amorphous layered double-hydroxide elctro-catalyst, method includes the following steps:
1) method for using growth in situ, generates laminated double hydroxide nanometer piece crystal presoma in nickel foam；
2) boron induced synthesis amorphous layered double-hydroxide elctro-catalyst is utilized.
Further, step 1) specifically:
Transition metal salt, methenamine 1-1) are dissolved in the mixed solvent, obtain mixed solution；
Pretreated nickel foam 1-2) is immersed in step 1-1) mixed solution in, reacted at 80-100 DEG C later
6-10h；
Nickel foam 1-3) is taken out to obtain being carried on the layered double-hydroxide in foam nickel base after washed, dry and receive
Rice piece crystal presoma.
Further, step 1-1) in, the transition metal salt includes one of nickel salt, cobalt salt or mantoquita or more
Kind.
Further, step 1-1) in, the transition metal salt is the nitrate of transition metal.
Further, step 1-1) in, the mixed solvent includes water and ethyl alcohol.
Further, step 1-2) in, the preprocessing process of the nickel foam are as follows: successively use deionized water, acetone, second
Alcohol takes out nickel foam, and washed, dried to nickel foam difference ultrasound 10-20min later.
Further, step 2) specifically: load in step 1) is had into laminated double hydroxide nanometer piece crystal presoma
Nickel foam be placed in NaBH4In solution, 8-30h is reacted at room temperature and is urged to get to the amorphous layered double-hydroxide electricity
Agent.
A kind of boron induces amorphous layered double-hydroxide elctro-catalyst, the elctro-catalyst using the method preparation and
At.
A kind of application of boron induction amorphous layered double-hydroxide elctro-catalyst, the elctro-catalyst is for electrolysis water
In evolving hydrogen reaction.
Further, when the elctro-catalyst is used for catalytic hydrogen evolution reaction process, using elctro-catalyst as working electrode,
Using mercuric oxide electrode as reference electrode, using carbon-point as to electrode.
Present invention growth in situ crystal laminated double hydroxide nanometer piece presoma directly in three-dimensional blank nickel foam, it
Adulterate boron atom induced synthesis amorphous laminated double hydroxide nanometer piece elctro-catalyst again afterwards.The evolving hydrogen reaction elctro-catalyst of preparation
Have benefited from the decrystallized technique of boron doping induced crystal laminated double hydroxide nanometer piece, with more active sites and more preferably
Chemical corrosion resistance, and promote preferably to act synergistically between polynary transition metal (such as nickel, cobalt).In addition, ultra-thin nanometer
The transmission of piece pattern, more conducively proton and electronics makes it possess bigger electrochemical surface area and more exposure active sites
Point；And the open three dimensional support structure of uniqueness, makes it possess more high conductivity, avoids preventing using any high polymer binder
Only to the obstruction of active site, the efficiency for generating gas discharge is improved.These advantages have promoted the elctro-catalyst close in high current
Excellent electro catalytic activity and stability are showed under degree, reach the requirement (> of current density needed for large-scale industrial production
500mA cm–2).In 1 mole every liter of KOH solution, the HER overpotential of the elctro-catalyst is respectively η10mA cm-2=22mV,
η100mA cm-2=140mV, η500mA cm-2=275mV, η1000mA cm-2=370mV.And in 1000mA cm–2Current density under, can
It is not declined significantly with being held up to 72 hours.Elctro-catalyst preparation process very simple in the present invention, raw material sources are convenient
Inexpensively (prepares raw material and relate only to blank nickel foam, nickel nitrate, cobalt nitrate, copper nitrate, methenamine, sodium borohydride etc. substantially
Common agents), at low cost, product purity is high, can be stably catalyzed under various current density conditions, keep extremely low reaction
Energy consumption, is easy to large-scale industrial production.Boron doping induced crystal laminated double hydroxide nanometer piece of the present invention is non-
The method of crystallization, the universality with height can be applied to the double hydroxides of the polynary transition metal stratiform such as unitary, binary and ternary
All there is excellent liberation of hydrogen electricity to urge for the preparation of object nanometer sheet crystal, resulting amorphous laminated double hydroxide nanometer piece elctro-catalyst
Change activity.
Compared with prior art, the invention has the characteristics that:
1) the present invention provides a kind of amorphous layered double-hydroxides for the boron induction of evolving hydrogen reaction under high current
Nanometer sheet elctro-catalyst synthesizes transition metal stratiform double-hydroxide in foam nickel base and receives first with growth in situ method
Rice piece crystal presoma, it is further by the method for room temperature boronation that crystal presoma is decrystallized, it is double to prepare amorphous stratiform
The self-cradling type liberation of hydrogen catalyst of hydroxide nano piece.Wherein, layered double-hydroxide crystal is induced by incorporation boron atom
Decrystallized method make the elctro-catalyst possess more active sites, lower electronics transfer impedance and preferably it is corrosion-resistant
Property.When the elctro-catalyst is in evolving hydrogen reaction, under conditions of extreme currents density, it is living that brilliant electro-catalysis can be shown
Property and stability.
2) not only electrocatalysis characteristic is excellent for amorphous laminated double hydroxide nanometer piece elctro-catalyst prepared by the present invention, preparation
Simple process, and it is low in cost, the electrocatalytic hydrogen evolution reaction of stability and high efficiency can be carried out under high current density, be suitble to extensive
In the production of water electrolysis hydrogen production.
Detailed description of the invention
Fig. 1 is the scanning electron microscope (SEM) photograph (SEM) for the 3D A-NiCo LDH/NF elctro-catalyst being prepared in embodiment 1,
In, (a) is the map under 2 μm, is (b) map under 500nm；
Fig. 2 is the saturating of 3D NiCo LDH/NF and 3D the A-NiCo LDH/NF elctro-catalyst being prepared in embodiment 1
Penetrate electron microscope (TEM), wherein (a) to (c) is the map of 3D NiCo LDH/NF, is (d) 3D A-NiCo LDH/NF to (f)
The map of elctro-catalyst；
Fig. 3 is that the X for 3D NiCo LDH/NF and 3D the A-NiCo LDH/NF elctro-catalyst being prepared in embodiment 1 is penetrated
Line diffraction spectroscopy analysis chart (XRD)；
In Fig. 4, (a) is the atomic force microscope for the 3D A-NiCo LDH/NF elctro-catalyst being prepared in embodiment 1
Scheme (AFM), (b) scans thickness chart (the nanometer sheet average thickness about 2.7nm) for corresponding region line in (a)；
Fig. 5 is the 3D A-NiCo LDH/NF elctro-catalyst being prepared in embodiment 1, with 5 millivolts of scanning speed per second
HER linear sweep voltammetry curve graph of the rate in 1.0 moles every liter of potassium hydroxide electrolyte；
Fig. 6 is the 3D A-NiCo LDH/NF elctro-catalyst being prepared in embodiment 1, loads 1000mA cm–2Electric current is close
Degree, current density-time plot in 1.0 moles every liter of potassium hydroxide electrolyte.
Specific embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.The present embodiment is with technical solution of the present invention
Premised on implemented, the detailed implementation method and specific operation process are given, but protection scope of the present invention is not limited to
Following embodiments.
Embodiment 1:
The preparation of the amorphous nickel cobalt laminated double hydroxide nanometer piece elctro-catalyst (3D A-NiCo LDH/NF) of boron induction
The following steps are included:
(1) the double hydroxides of crystal nickel cobalt stratiform are generated in the blank nickel foam of three-dimensional structure using the method for growth in situ
Object nanometer sheet presoma (3D NiCo LDH/NF): interception blank nickel foam is pre-processed, including successively uses deionized water, third
Blank nickel foam is washed down with deionized water later, is dried at room temperature to its each ultrasound 15min by ketone, ethyl alcohol；Then weigh 8.8g
Ni (NO3)2·6H2O, the Co (NO of 4.4g3)2·6H2O, the methenamine of 5g is dissolved in 50mL deionized water and 150mL ethyl alcohol
In the mixed solvent, be transferred in beaker after ultrasonic 30min.The blank nickel foam pre-processed is put into above-mentioned solution again,
Make its complete submergence, be placed in baking oven, with 90 DEG C of reaction 9h, after room temperature is cooling, it is negative to get arriving that nickel foam is taken out into clean drying
The crystal nickel cobalt layered double-hydroxide ultrathin nanometer piece presoma (3D NiCo LDH/NF) being loaded in foam nickel base；
(2) amorphous nickel cobalt laminated double hydroxide nanometer piece elctro-catalyst (3D A-NiCo is formed using boron-doping inducing atom
LDH/NF): weighing the NaBH of 1.8915g4It is dissolved in the deionized water of 50mL, ultrasonic 2min；The 3D NiCo that will be prepared again
LDH/NF presoma is statically placed in above-mentioned solution, is reacted 25h at room temperature and is urged to get to final 3D A-NiCo LDH/NF electricity
Agent.
3D A-NiCo LDH/NF elctro-catalyst manufactured in the present embodiment, it is specific to walk when being used for catalytic hydrogen evolution reaction process
Suddenly are as follows: using the 3D A-NiCo LDH/NF elctro-catalyst prepared as working electrode, using mercuric oxide electrode as reference electrode,
Carbon-point is used as to electrode.The chemical property of HER, including linear scan are tested in 1 mole of every liter of KOH solution of hydrogen saturation
Volt-ampere test and when the test of m- current density.
As seen from Figure 1,3D A-NiCo LDH/NF nano-chip arrays are vertical and dense distribution is in foam nickel surface,
Nanometer sheet possesses superthin structure.
3D NiCo LDH/NF possesses ultrathin nanometer chip architecture it can be seen from Fig. 2 (a), the knot with the SEM in Fig. 1
Fruit is consistent.And from Fig. 2 (b) 3D NiCo LDH/NF selective electron diffraction figure (SAED), it can be observed that have it is multiple with one heart
Diffraction fringe exists, it was demonstrated that it mutually exists with polycrystalline.The high power transmission electron microscope picture (HRTEM) of Fig. 2 (c) illustrates 3D NiCo
Clearly lattice fringe, spacing of lattice are 0.272 and 0.158 nanometer to LDH/NF, respectively correspond (100) of crystal NiCo LDH
(003) crystal face.Fig. 2 (a-c) illustrates that presoma 3D NiCo LDH/NF is polycrystalline structure.And from the 3D A-NiCo of Fig. 2 (d)
The TEM figure of LDH/NF can see, and after mixing boron atom into presoma, laminated structure still retains；But in Fig. 2
(e) it can be found that diffraction fringe and lattice fringe all completely disappear in the HRTEM figure of SAED figure and Fig. 2 (f), illustrate in incorporation boron
After atom, amorphous phase-change occurs for crystal NiCo LDH, forms completely amorphous 3D A-NiCo LDH/NF.
As seen from Figure 3, blank nickel foam is there are three diffraction maximum, position respectively at 44.3 °, 51.8 ° and 76.3 °,
Respectively correspond (111), (200) and (220) crystal face of nickel.Presoma 3D NiCo LDH/NF spreads out in addition to possessing three of nickel foam
Peak is penetrated, for remaining diffraction maximum respectively at 19.3 °, 33.26 °, 37.8 °, 59.9 ° of positions respectively correspond crystal NiCo LDH's
(001), (100), (101) and (003) crystal face.And in the XRD diffraction pattern of 3D A-NiCo LDH/NF, and only exist blank bubble
Three diffractive features peaks of foam nickel illustrate the incorporation with boron atom, and amorphous phase-change occurs for crystal NiCo LDH, are formed completely non-
Brilliant 3D A-NiCo LDH/NF.
As seen from Figure 4, the average thickness of 3D A-NiCo LDH/NF only have about 2.7nm, demonstrate its possess it is ultra-thin
The laminated structure of structure.
As seen from Figure 5,3D A-NiCo LDH/NF needs to reach 10mA cm in the overpotential of 140mV–2Electric current it is close
Degree；And reach high current density 500mA cm–2With 1000mA cm–2When, then it is respectively necessary for the overpotential of 275 and 370mV, is shown
Its excellent electro catalytic activity (especially under high current density).
As seen from Figure 6,3D A-NiCo LDH/NF can be in stable -0.37V voltage (relative to reversible hydrogen electricity
Pole) under, keep 1000mA cm–2Current density shows that it is excellent under high current density up to 72 hours, and almost without decaying
Different stability.
Embodiment 2:
The preparation of amorphous nickel laminated double hydroxide nanometer piece elctro-catalyst (3D A-Ni LDH/NF) of boron induction includes
Following steps:
(1) crystal nickel layered double-hydroxide is generated in the blank nickel foam of three-dimensional structure using the method for growth in situ
Nanometer sheet presoma (3D Ni LDH/NF): interception blank nickel foam pre-processed, including successively with deionized water, acetone,
Blank nickel foam is washed down with deionized water later, is dried at room temperature to its each ultrasound 15min by ethyl alcohol；Then weigh 13.2g's
Ni(NO3)2·6H2O, the methenamine of 5g is dissolved in the in the mixed solvent of 50mL deionized water and 150mL ethyl alcohol, ultrasonic 30min
After be transferred in beaker.The blank nickel foam pre-processed is put into above-mentioned solution again, makes its complete submergence, is placed in baking oven
In, with 90 DEG C of reaction 9h, after room temperature is cooling, nickel foam is taken out and cleans drying to get to the crystalline substance being carried in foam nickel base
Body nickel layered double-hydroxide ultrathin nanometer piece presoma (3D Ni LDH/NF)；
(2) amorphous nickel laminated double hydroxide nanometer piece elctro-catalyst (3D A-Ni is formed using boron-doping inducing atom
LDH/NF): weighing the NaBH of 1.8915g4It is dissolved in the deionized water of 50mL, ultrasonic 2min；The 3D Ni that will be prepared again
LDH/NF presoma is statically placed in above-mentioned solution, reacts 25h at room temperature to get final 3D A-Ni LDH/NF electro-catalysis is arrived
Agent.
3D A-Ni LDH/NF elctro-catalyst manufactured in the present embodiment, when being used for catalytic hydrogen evolution reaction process, specific steps
Are as follows: using the 3D A-Ni LDH/NF elctro-catalyst prepared as working electrode, using mercuric oxide electrode as reference electrode, carbon-point
As to electrode.The chemical property of HER, including linear scan volt are tested in 1 mole every liter of KOH solution of hydrogen saturation
Peace test and when the test of m- current density.
Embodiment 3:
The preparation of amorphous cobalt laminated double hydroxide nanometer piece elctro-catalyst (3D A-Co LDH/NF) of boron induction includes
Following steps:
(1) crystal cobalt layered double-hydroxide is generated in the blank nickel foam of three-dimensional structure using the method for growth in situ
Nanometer sheet presoma (3D Co LDH/NF): interception blank nickel foam pre-processed, including successively with deionized water, acetone,
Blank nickel foam is washed down with deionized water later, is dried at room temperature to its each ultrasound 15min by ethyl alcohol；Then weigh 10-15g
Co (NO3)2·6H2O, the methenamine of 3-8g is dissolved in the in the mixed solvent of 50mL deionized water and 150mL ethyl alcohol, ultrasound
It is transferred in beaker after 30min.The blank nickel foam pre-processed is put into above-mentioned solution again, makes its complete submergence, is placed in
In baking oven, with 90 DEG C of reaction 9h, after room temperature is cooling, nickel foam is taken out and cleans drying to get to being carried in foam nickel base
Crystal cobalt layered double-hydroxide ultrathin nanometer piece presoma (3D Co LDH/NF)；
(2) amorphous nickel laminated double hydroxide nanometer piece elctro-catalyst (3D A-Co is formed using boron-doping inducing atom
LDH/NF): weighing the NaBH of 2-4g4It is dissolved in the deionized water of 50mL, ultrasonic 2min；The 3D Co LDH/ that will be prepared again
NF presoma is statically placed in above-mentioned solution, reacts 25h at room temperature to get final 3D A-Co LDH/NF elctro-catalyst is arrived.
3D A-Co LDH/NF elctro-catalyst manufactured in the present embodiment, when being used for catalytic hydrogen evolution reaction process, specific steps
Are as follows: using the 3D A-Co LDH/NF elctro-catalyst prepared as working electrode, using mercuric oxide electrode as reference electrode, carbon-point
As to electrode.The chemical property of HER, including linear scan volt are tested in 1 mole every liter of KOH solution of hydrogen saturation
Peace test and when the test of m- current density.
Embodiment 4:
The amorphous nickel cobalt copper laminar double hydroxide nano piece elctro-catalyst (3D A-NiCoCu LDH/NF) of boron induction
Preparation the following steps are included:
(1) the double hydrogen-oxygens of crystal nickel cobalt copper laminar are generated in the blank nickel foam of three-dimensional structure using the method for growth in situ
Compound nanometer sheet presoma (3D NiCoCu LDH/NF): interception blank nickel foam is pre-processed, including successively uses deionization
Blank nickel foam is washed down with deionized water later, is dried at room temperature to its each ultrasound 15min by water, acetone, ethyl alcohol；Then claim
Take the Ni (NO of 8-10g3)2·6H2O, the Co (NO of 3-5g3)2·6H2O, the methenamine of 5g be dissolved in 50mL deionized water and
The in the mixed solvent of 150mL ethyl alcohol is transferred in beaker after ultrasonic 30min.The blank nickel foam pre-processed is put into again
It states in solution, makes its complete submergence, be placed in baking oven, with 70-100 DEG C of reaction 9h, after room temperature is cooling, nickel foam is taken out and is cleaned
Drying is to get to crystal nickel cobalt layered double-hydroxide ultrathin nanometer piece (the 3D NiCo LDH/ being carried in foam nickel base
NF).Then Cu (the NO of 3-5g is weighed3)2·3H2O is dissolved in the in the mixed solvent of 50mL deionized water and 150mL ethyl alcohol, ultrasound
The 3D NiCo LDH/NF prepared is put into the solvent to take out after standing reaction 6h at room temperature and cleans drying, i.e., by 10min
Obtain being carried on crystal nickel cobalt copper laminar double-hydroxide ultrathin nanometer piece presoma (the 3D NiCoCu in foam nickel base
LDH/NF)；
(2) amorphous nickel cobalt copper laminar double hydroxide nano piece elctro-catalyst (3D A- is formed using boron-doping inducing atom
NiCoCu LDH/NF): weigh the NaBH of 1-3g4It is dissolved in the deionized water of 50mL, ultrasonic 2min；The 3D that will be prepared again
NiCoCu LDH/NF presoma is statically placed in above-mentioned solution, reacts 25h at room temperature to get final 3D A-NiCoCu is arrived
LDH/NF elctro-catalyst.
3D A-NiCoCu LDH/NF elctro-catalyst manufactured in the present embodiment, when being used for catalytic hydrogen evolution reaction process, specifically
Step are as follows: using the 3D A-NiCoCu LDH/NF elctro-catalyst prepared as working electrode, using mercuric oxide electrode as reference
Electrode, carbon-point are used as to electrode.The chemical property of HER is tested in 1 mole every liter of KOH solution of hydrogen saturation, including
Linear sweep voltammetry test and when the test of m- current density.
Embodiment 5:
A kind of boron induction amorphous layered double-hydroxide elctro-catalyst, the preparation method of the elctro-catalyst includes following step
It is rapid:
1) method for using growth in situ, generates laminated double hydroxide nanometer piece crystal presoma in nickel foam:
Transition metal salt, methenamine 1-1) are dissolved in the in the mixed solvent of water and ethyl alcohol, obtain mixed solution,
In, transition metal salt is nickel salt and mantoquita, and transition metal salt is the nitrate of transition metal；
1-2) nickel foam is pre-processed: ultrasound 10min successively being distinguished to nickel foam with deionized water, acetone, ethyl alcohol,
Nickel foam is taken out later, and is washed, dried；Pretreated nickel foam is immersed in step 1-1) mixed solution in,
6h is reacted at 100 DEG C later；
Nickel foam 1-3) is taken out to obtain being carried on the layered double-hydroxide in foam nickel base after washed, dry and receive
Rice piece crystal presoma.
2) boron induced synthesis amorphous layered double-hydroxide elctro-catalyst is utilized:
There is the nickel foam of laminated double hydroxide nanometer piece crystal presoma to be placed in NaBH load in step 1)4Solution
In, react 30h at room temperature to get amorphous layered double-hydroxide elctro-catalyst is arrived.
The elctro-catalyst being prepared is used in the evolving hydrogen reaction of electrolysis water, when being used for catalytic hydrogen evolution reaction process, with
Elctro-catalyst is as working electrode, using mercuric oxide electrode as reference electrode, using carbon-point as to electrode.
Embodiment 6:
A kind of boron induction amorphous layered double-hydroxide elctro-catalyst, the preparation method of the elctro-catalyst includes following step
It is rapid:
1) method for using growth in situ, generates laminated double hydroxide nanometer piece crystal presoma in nickel foam:
Transition metal salt, methenamine 1-1) are dissolved in the in the mixed solvent of water and ethyl alcohol, obtain mixed solution,
In, transition metal salt is cobalt salt and mantoquita, and transition metal salt is the nitrate of transition metal；
1-2) nickel foam is pre-processed: ultrasound 20min successively being distinguished to nickel foam with deionized water, acetone, ethyl alcohol,
Nickel foam is taken out later, and is washed, dried；Pretreated nickel foam is immersed in step 1-1) mixed solution in,
10h is reacted at 80 DEG C later；
Nickel foam 1-3) is taken out to obtain being carried on the layered double-hydroxide in foam nickel base after washed, dry and receive
Rice piece crystal presoma.
2) boron induced synthesis amorphous layered double-hydroxide elctro-catalyst is utilized:
There is the nickel foam of laminated double hydroxide nanometer piece crystal presoma to be placed in NaBH load in step 1)4Solution
In, react 8h at room temperature to get amorphous layered double-hydroxide elctro-catalyst is arrived.
The elctro-catalyst being prepared is used in the evolving hydrogen reaction of electrolysis water, when being used for catalytic hydrogen evolution reaction process, with
Elctro-catalyst is as working electrode, using mercuric oxide electrode as reference electrode, using carbon-point as to electrode.
Embodiment 7:
A kind of boron induction amorphous layered double-hydroxide elctro-catalyst, the preparation method of the elctro-catalyst includes following step
It is rapid:
1) method for using growth in situ, generates laminated double hydroxide nanometer piece crystal presoma in nickel foam:
Transition metal salt, methenamine 1-1) are dissolved in the in the mixed solvent of water and ethyl alcohol, obtain mixed solution,
In, transition metal salt is mantoquita, and transition metal salt is the nitrate of transition metal；
1-2) nickel foam is pre-processed: ultrasound 15min successively being distinguished to nickel foam with deionized water, acetone, ethyl alcohol,
Nickel foam is taken out later, and is washed, dried；Pretreated nickel foam is immersed in step 1-1) mixed solution in,
8h is reacted at 90 DEG C later；
Nickel foam 1-3) is taken out to obtain being carried on the layered double-hydroxide in foam nickel base after washed, dry and receive
Rice piece crystal presoma.
2) boron induced synthesis amorphous layered double-hydroxide elctro-catalyst is utilized:
There is the nickel foam of laminated double hydroxide nanometer piece crystal presoma to be placed in NaBH load in step 1)4Solution
In, react 20h at room temperature to get amorphous layered double-hydroxide elctro-catalyst is arrived.
The elctro-catalyst being prepared is used in the evolving hydrogen reaction of electrolysis water, when being used for catalytic hydrogen evolution reaction process, with
Elctro-catalyst is as working electrode, using mercuric oxide electrode as reference electrode, using carbon-point as to electrode.
The above description of the embodiments is intended to facilitate ordinary skill in the art to understand and use the invention.
Person skilled in the art obviously easily can make various modifications to these embodiments, and described herein general
Principle is applied in other embodiments without having to go through creative labor.Therefore, the present invention is not limited to the above embodiments, ability
Field technique personnel announcement according to the present invention, improvement and modification made without departing from the scope of the present invention all should be of the invention
Within protection scope.
Claims (10)
1. a kind of preparation method of boron induction amorphous layered double-hydroxide elctro-catalyst, which is characterized in that this method include with
Lower step:
1) method for using growth in situ, generates laminated double hydroxide nanometer piece crystal presoma in nickel foam；
2) boron induced synthesis amorphous layered double-hydroxide elctro-catalyst is utilized.
2. a kind of preparation method of boron induction amorphous layered double-hydroxide elctro-catalyst according to claim 1, special
Sign is, step 1) specifically:
Transition metal salt, methenamine 1-1) are dissolved in the mixed solvent, obtain mixed solution；
Pretreated nickel foam 1-2) is immersed in step 1-1) mixed solution in, react 6- at 80-100 DEG C later
10h；
It 1-3) takes out nickel foam and obtains being carried on the laminated double hydroxide nanometer piece in foam nickel base after washed, dry
Crystal presoma.
3. a kind of preparation method of boron induction amorphous layered double-hydroxide elctro-catalyst according to claim 2, special
Sign is, step 1-1) in, the transition metal salt includes one of nickel salt, cobalt salt or mantoquita or more.
4. a kind of preparation method of boron induction amorphous layered double-hydroxide elctro-catalyst according to claim 2, special
Sign is, step 1-1) in, the transition metal salt is the nitrate of transition metal.
5. a kind of preparation method of boron induction amorphous layered double-hydroxide elctro-catalyst according to claim 2, special
Sign is, step 1-1) in, the mixed solvent includes water and ethyl alcohol.
6. a kind of preparation method of boron induction amorphous layered double-hydroxide elctro-catalyst according to claim 2, special
Sign is, step 1-2) in, the preprocessing process of the nickel foam are as follows: successively with deionized water, acetone, ethyl alcohol to nickel foam
Ultrasound 10-20min respectively, takes out nickel foam, and washed, dried later.
7. a kind of preparation method of boron induction amorphous layered double-hydroxide elctro-catalyst according to claim 1, special
Sign is, step 2) specifically: has the nickel foam of laminated double hydroxide nanometer piece crystal presoma to set load in step 1)
In NaBH4In solution, 8-30h is reacted at room temperature to get the amorphous layered double-hydroxide elctro-catalyst is arrived.
8. a kind of boron induces amorphous layered double-hydroxide elctro-catalyst, which is characterized in that the elctro-catalyst is used as right is wanted
1 to 7 described in any item methods are asked to be prepared.
9. a kind of application of boron induction amorphous layered double-hydroxide elctro-catalyst as claimed in claim 8, which is characterized in that
The elctro-catalyst is in the evolving hydrogen reaction of electrolysis water.
10. a kind of application of boron induction amorphous layered double-hydroxide elctro-catalyst according to claim 9, feature exist
When, the elctro-catalyst is used for catalytic hydrogen evolution reaction process, using elctro-catalyst as working electrode, made with mercuric oxide electrode
For reference electrode, using carbon-point as to electrode.
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| CN113668011A (en) * | 2021-07-22 | 2021-11-19 | 延安大学 | Electrode material with crystalline-state amorphous-state synergetic catalytic interface and preparation method thereof |
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| CN114702083A (en) * | 2022-01-12 | 2022-07-05 | 青岛科技大学 | Control method of cobalt-nickel layered double hydroxide amorphous structure |
| WO2024057716A1 (en) * | 2022-09-16 | 2024-03-21 | パナソニックＩｐマネジメント株式会社 | Water electrolysis electrode, water electrolysis anode, water electrolysis cathode, water electrolysis cell, water electrolysis device, and method for producing water electrolysis electrode |
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