CN109126797A - A kind of electrocatalyst materials of water electrolysis hydrogen production and its preparation method and application - Google Patents
A kind of electrocatalyst materials of water electrolysis hydrogen production and its preparation method and application Download PDFInfo
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- CN109126797A CN109126797A CN201810918434.8A CN201810918434A CN109126797A CN 109126797 A CN109126797 A CN 109126797A CN 201810918434 A CN201810918434 A CN 201810918434A CN 109126797 A CN109126797 A CN 109126797A
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- 239000000463 material Substances 0.000 title claims abstract description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 32
- 238000002360 preparation method Methods 0.000 title claims abstract description 29
- 238000005868 electrolysis reaction Methods 0.000 title claims abstract description 28
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 26
- 239000001257 hydrogen Substances 0.000 title claims abstract description 26
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 20
- 239000010411 electrocatalyst Substances 0.000 title claims abstract description 19
- 239000003054 catalyst Substances 0.000 claims abstract description 39
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 35
- VKYKSIONXSXAKP-UHFFFAOYSA-N hexamethylenetetramine Chemical compound C1N(C2)CN3CN1CN2C3 VKYKSIONXSXAKP-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000000047 product Substances 0.000 claims abstract description 30
- 238000001027 hydrothermal synthesis Methods 0.000 claims abstract description 24
- KBJMLQFLOWQJNF-UHFFFAOYSA-N nickel(ii) nitrate Chemical compound [Ni+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O KBJMLQFLOWQJNF-UHFFFAOYSA-N 0.000 claims abstract description 22
- UFMZWBIQTDUYBN-UHFFFAOYSA-N cobalt dinitrate Chemical compound [Co+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O UFMZWBIQTDUYBN-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910001981 cobalt nitrate Inorganic materials 0.000 claims abstract description 20
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims abstract description 18
- 235000010299 hexamethylene tetramine Nutrition 0.000 claims abstract description 15
- 239000004312 hexamethylene tetramine Substances 0.000 claims abstract description 15
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 12
- 239000004917 carbon fiber Substances 0.000 claims abstract description 12
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 12
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000005406 washing Methods 0.000 claims abstract description 8
- 235000019441 ethanol Nutrition 0.000 claims abstract description 5
- 239000012467 final product Substances 0.000 claims abstract description 4
- 239000002904 solvent Substances 0.000 claims abstract description 4
- 229910003266 NiCo Inorganic materials 0.000 claims description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 8
- 229910052799 carbon Inorganic materials 0.000 claims description 8
- 239000000835 fiber Substances 0.000 claims description 5
- 239000004744 fabric Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 23
- 230000008569 process Effects 0.000 abstract description 4
- 238000003487 electrochemical reaction Methods 0.000 abstract description 3
- 230000009257 reactivity Effects 0.000 description 12
- 239000003153 chemical reaction reagent Substances 0.000 description 7
- 238000001035 drying Methods 0.000 description 5
- 230000001376 precipitating effect Effects 0.000 description 5
- 150000001412 amines Chemical class 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 125000001434 methanylylidene group Chemical group [H]C#[*] 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000011056 performance test Methods 0.000 description 3
- 238000006555 catalytic reaction Methods 0.000 description 2
- 239000010970 precious metal Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
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- 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
- B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
- B01J35/33—Electric or magnetic properties
-
- 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
- B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
-
- 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)
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Abstract
The invention discloses a kind of electrocatalyst materials NiCo2(CO3)(OH)4The preparation method of/C, the following steps are included: S1. is that solvent prepares the solution A containing nickel nitrate, cobalt nitrate, hexamethylenetetramine with methanol, ethyl alcohol or water etc., the Final molar ratio of nickel nitrate, cobalt nitrate and hexamethylenetetramine is (0.02~0.05): (0.04~0.1): (0.12~0.3) in solution A；S2. carbon fiber medium is added into solution A and carries out hydro-thermal reaction, obtains being carried on the Primary product on carbon fiber paper after washing is dry；S3. by Primary product and with solution A is isometric, NaOH solutions of pH=13 mixs and carry out hydro-thermal reaction, washing, dry after to obtain the final product.The present invention provides a kind of preparation method and applications of the electrocatalyst materials of water electrolysis hydrogen production, have many advantages, such as that method is simple, low in cost.The electrocatalyst materials of preparation are monoblock type, avoid that resistance present in fine catalyst application process is big, and the shortcomings that being easy to fall off, three-dimensional porous structure is presented in gained electrocatalyst materials, are conducive to the mass transfer of electrochemical reaction, have good electrocatalysis characteristic.
Description
Technical field
The present invention relates to field of new materials, and in particular, to a kind of electrocatalyst materials of water electrolysis hydrogen production and its preparation
Methods and applications.
Background technique
Petroleum and energy crisis make the research of new energy in the ascendant, modern society develop rapidly caused by the energy and
Environmental problem is proposed very high requirement to the exploitation of renewable energy and the effective use of non-renewable energy resources.Catalysis is made
One of most effective control measures are converted for substance, central role is played to the solution of these problems.In terms of green energy resource,
The research of catalytic chemistry for the Efficient Conversion of Hydrogen Energy and using providing various catalysis response paths, be Hydrogen Energy chemistry storage and
Release and the conversion of biomass material and utilization provide effective technology path.
In the preparation of Hydrogen Energy, the method for hydrogen is prepared by high praise using the route of electrolysis water.However use electrolysis water
Hydrogen manufacturing will often consume a large amount of electric energy, and required voltage is higher, need to consume a large amount of electric energy, therefore, select suitable catalyst for
The efficient preparation of hydrogen is necessary.In numerous catalyst, precious metals pt catalyst is efficient commercial catalyst, but its valence
Lattice are expensive, resource is limited.Therefore, it is imperative to develop non-precious metal catalyst.
Summary of the invention
The purpose of the invention is to overcome the deficiencies in the prior art and disadvantage, provide a kind of electrocatalyst materials NiCo2
(CO3)(OH)4The preparation method of/C.
A second object of the present invention is to provide the electrocatalyst materials NiCo that the preparation method is prepared2(CO3)
(OH)4/C。
Third object of the present invention is to provide the electrocatalyst materials NiCo2(CO3)(OH)4/ C is as electrolysis water system
The application of the elctro-catalyst of hydrogen.
The purpose of the invention is achieved by the following technical solution:
A kind of electrocatalyst materials NiCo2(CO3)(OH)4The preparation method of/C, comprising the following steps:
S1. using methanol, ethyl alcohol or water as solvent, the solution A containing nickel nitrate, cobalt nitrate, hexamethylenetetramine, solution A are prepared
The Final molar ratio of middle nickel nitrate, cobalt nitrate and hexamethylenetetramine is (0.02~0.05): (0.04~0.1): (0.12~
0.3)；
S2. hydro-thermal reaction is carried out after the medium of carbon fibre material is added into solution A, obtains being carried on carbon fiber after washing is dry
Primary product on the medium of material；
S3. by Primary product and with solution A is isometric, NaOH solutions of pH=13 mixs and carry out hydro-thermal reaction, washing is dried
Afterwards to obtain the final product.
Electrocatalyst materials NiCo has been prepared by creative labor in inventor2(CO3)(OH)4It is prepared by/C
NiCo2(CO3)(OH)4In/C catalyst materials process, the medium of the carbon fibre material of addition is conveniently easy to get, is cheap；It is logical
Crossing the catalyst material that method disclosed by the invention is prepared is monoblock type, avoids and exists in fine catalyst application process
Resistance it is big, the shortcomings that being easy to fall off；Three-dimensional porous structure is presented in gained catalyst material, is conducive to the biography of electrochemical reaction
Matter shows good electrocatalysis characteristic in electrolysis water performance test.
Preferably, in step S1, nickel nitrate, cobalt nitrate and hexamethylenetetramine Final molar ratio are 1:2:6 in solution A；More
Preferably, the whole molar concentration of nickel nitrate is 0.02~0.05 mol/L in solution A.
Preferably, in step S2, the medium of the carbon fibre material is carbon fiber paper or carbon cloth.
Preferably, in step S2, the condition of hydro-thermal reaction is 160~190 DEG C, 10~18 h.
Preferably, in step S3, hydrothermal reaction condition is 130~180 DEG C, 1~6 h.
Most preferably, the preparation method, comprising the following steps:
S1. it is prepared using methanol as solvent and contains 0.02 mol/L nickel nitrate, 0.04mol/L cobalt nitrate, 0.12 mol/L, six first
The solution A of urotropine, at this point, the Final molar ratio of nickel nitrate, cobalt nitrate and hexamethylenetetramine is 0.02:0.04 in solution A:
0.12, it stirs evenly；
S2. 12 h of hydro-thermal reaction under the conditions of 180 DEG C is added after carbon fiber paper into solution A, is carried on after washing is dry
Primary product on carbon fiber paper；
S3. by Primary product and with solution A is isometric, NaOH solutions of pH=13 carry out hydro-thermal reaction 4 at a temperature of 160 DEG C
H, after washing, drying to obtain the final product.
The electrocatalyst materials NiCo that approach described above is prepared is also claimed in the present invention2(CO3)(OH)4/C。
Preferably, the catalyst is elctro-catalyst.
Preferably, the catalyst is the elctro-catalyst of water electrolysis hydrogen production.
Compared with prior art, the invention has the following advantages:
The present invention provides a kind of preparation method and applications of the electrocatalyst materials of water electrolysis hydrogen production, simple with method,
The advantages that low in cost.The electrocatalyst materials of preparation are monoblock type, avoid electricity present in fine catalyst application process
Resistance is big, and the shortcomings that being easy to fall off, three-dimensional porous structure is presented in gained electrocatalyst materials, is conducive to the biography of electrochemical reaction
Matter has good electrocatalysis characteristic.
Detailed description of the invention
Fig. 1 is NiCo prepared by embodiment 12(CO3)(OH)4The XRD diagram of/C.
Fig. 2 is NiCo prepared by embodiment 12(CO3)(OH)4The SEM of/C schemes.
Fig. 3 is NiCo prepared by embodiment 12(CO3)(OH)4HER the and OER reactivity worth of/C.
Fig. 4 is the HER reactivity worth for the product that embodiment 5 is prepared without NaOH hydro-thermal process.
Specific embodiment
With reference to the accompanying drawings of the specification and specific embodiment is made the present invention and is further elaborated, the embodiment
It is served only for explaining the present invention, be not intended to limit the scope of the present invention.Test method as used in the following examples is such as without spy
Different explanation, is conventional method；Used material, reagent etc., unless otherwise specified, for the reagent commercially obtained
And material.
Embodiment 1
A kind of water electrolysis hydrogen production catalyst n iCo2(CO3)(OH)4The preparation method of/C, comprising the following steps:
1. method
Nickel nitrate, cobalt nitrate, precipitating reagent hexamethylenetetramine are dissolved in methanol and are uniformly mixed, solution A is configured to, it is molten
The whole molar concentration of nickel nitrate is 0.02 mol/L in liquid A, and the whole molar concentration of cobalt nitrate is 0.04 mol/L, six methines four
The whole molar concentration of amine is 0.12 mol/L.
Business carbon fiber paper is added into above-mentioned solution A, then 12 h of hydro-thermal reaction under the conditions of 180 DEG C, washed, dry
Primary product is obtained after dry；Then by the NaOH solution of Primary product and pH=13 isometric with solution A at a temperature of 160 DEG C
4 h of hydro-thermal reaction obtains water electrolysis hydrogen production catalyst n iCo after washed drying2(CO3)(OH)4/C。
2. result
Elctro-catalyst NiCo of good performance is prepared according to the above method2(CO3)(OH)4The XRD diagram of/C is as shown in Figure 1, show
The product of preparation is NiCo2(CO3)(OH)4/ C is consistent.The SEM of the product schemes as shown in Fig. 2, being three-dimensional more from visible product is schemed
Hole laminated structure, interconnection generation is porous, and such structure is conducive to electrolysis water reaction.
Two, properties of product detect
1. method
By existing public technology by the water electrolysis hydrogen production catalyst n iCo of preparation2(CO3)(OH)4/ C carries out electrolysis water reactivity worth
Test.
2. result
The elctro-catalyst electrolysis water reactivity worth being prepared is tested as shown in figure 3, as can be seen from the figure: the HER of the material
The η of reactivity worth10(HER reactivity worth index) overpotential is 147.6 mV, the η of OER reactivity worth10(OER reactivity worth refers to
Mark) overpotential be 132.4 mV, have good electrocatalysis characteristic.
Embodiment 2
A kind of water electrolysis hydrogen production catalyst n iCo2(CO3)(OH)4The preparation method of/C, comprising the following steps:
1. method
Nickel nitrate, cobalt nitrate, precipitating reagent hexamethylenetetramine are dissolved in ethyl alcohol and are uniformly mixed, solution A is configured to, it is molten
The whole molar concentration of nickel nitrate is 0.03 mol/L in liquid A, and the whole molar concentration of cobalt nitrate is 0.06 mol/L, six methines four
The whole molar concentration of amine is 0.18 mol/L.
Carbon cloth is added into above-mentioned solution A, then 10 h of hydro-thermal reaction under the conditions of 190 DEG C, after washed, dry
Obtain Primary product；Then by the NaOH solution of Primary product and pH=13 isometric with solution A at a temperature of 180 DEG C hydro-thermal
1 h is reacted, water electrolysis hydrogen production catalyst n iCo is obtained after washed drying2(CO3)(OH)4/C。
2. result
Elctro-catalyst NiCo of good performance is prepared by the above method2(CO3)(OH)4/ C, the product are three-dimensional porous
Shape structure is interconnected to porous.
Embodiment 3
A kind of water electrolysis hydrogen production catalyst n iCo2(CO3)(OH)4The preparation method of/C, comprising the following steps:
1. method
By nickel nitrate, cobalt nitrate, precipitating reagent hexamethylenetetramine is soluble in water is uniformly mixed, and is configured to solution A, solution A
The whole molar concentration of middle nickel nitrate is 0.04 mol/L, and the whole molar concentration of cobalt nitrate is 0.08 mol/L, hexamethylenetetramine
Whole molar concentration be 0.24 mol/L.
Business carbon fiber paper is added into above-mentioned solution A, then 16 h of hydro-thermal reaction under the conditions of 160 DEG C, washed, dry
Primary product is obtained after dry；Then by the NaOH solution of Primary product and pH=13 isometric with solution A at a temperature of 140 DEG C
5 h of hydro-thermal reaction obtains water electrolysis hydrogen production catalyst n iCo after washed drying2(CO3)(OH)4/C。
2. result
Elctro-catalyst NiCo of good performance is prepared by the above method2(CO3)(OH)4/ C, the product are three-dimensional porous
Shape structure is interconnected to porous.
Embodiment 4
A kind of water electrolysis hydrogen production catalyst n iCo2(CO3)(OH)4The preparation method of/C, comprising the following steps:
1. method
Nickel nitrate, cobalt nitrate, precipitating reagent hexamethylenetetramine are dissolved in ethyl alcohol and are uniformly mixed, solution A is configured to, it is molten
The whole molar concentration of nickel nitrate is 0.05 mol/L in liquid A, and the whole molar concentration of cobalt nitrate is 0.1 mol/L, six methines four
The whole molar concentration of amine is 0.30 mol/L.
Business carbon fiber paper is added into above-mentioned solution A, then 12 h of hydro-thermal reaction under the conditions of 170 DEG C, washed, dry
Primary product is obtained after dry；Then by the NaOH solution of Primary product and pH=13 isometric with solution A at a temperature of 130 DEG C
6 h of hydro-thermal reaction obtains water electrolysis hydrogen production catalyst n iCo after washed drying2(CO3)(OH)4/C。
2. result
Elctro-catalyst NiCo of good performance is prepared by the above method2(CO3)(OH)4/ C, the product are three-dimensional porous
Shape structure is interconnected to porous.
Embodiment 5
A kind of water electrolysis hydrogen production catalyst n iCo2(CO3)(OH)4The preparation method (being not added with NaOH hydro-thermal process) of/C, including with
Lower step:
1. method
Nickel nitrate, cobalt nitrate, precipitating reagent hexamethylenetetramine are dissolved in methanol and are uniformly mixed, solution A is configured to, it is molten
The whole molar concentration of nickel nitrate is 0.02 mol/L in liquid A, and the whole molar concentration of cobalt nitrate is 0.04 mol/L, six methines four
The whole molar concentration of amine is 0.12 mol/L.
Business carbon fiber paper is added into above-mentioned solution A, then 12 h of hydro-thermal reaction under the conditions of 180 DEG C, it is washed dry
Water electrolysis hydrogen production catalyst n iCo is obtained after dry2(CO3)(OH)4/C。
2. result
Electrode catalyst NiCo is prepared by the above method2(CO3)(OH)4/C。
Two, properties of product detect
1. method
The product of preparation is subjected to the test of HER reactivity worth by existing public technology.
2. result
The elctro-catalyst HER reactivity worth being prepared is as shown in figure 4, as can be seen from the figure: the η of the material10(HER reaction
Performance indicator) overpotential be 182.6 mV, do not have good electrocatalysis characteristic.
Properties of product detection comparison
1. method
The electrolysis water the performance test results that embodiment 1 prepares elctro-catalyst prepare the HER performance test results of product with embodiment 5
It compares.
2. result
Embodiment 1 prepares the performance of product respectively as shown in Fig. 3 (a) and (b), and embodiment 5 prepares same Fig. 4 of performance of product.From
Fig. 3 can be seen that the elctro-catalyst being prepared using 1 the method for embodiment shows more excellent electrolysis water reactivity
Energy.Comparison diagram 3(a) and Fig. 4, the η 10(HER reactivity worth index of material before hydro-thermal process) 182.6 mV of overpotential, passes through
After hydro-thermal NaOH processing, HER performance, which has, largely to be improved, and 10 overpotential of η is reduced to 147.6 mV.This shows lye
Hydro-thermal process can effectively improve NiCo2(CO3)(OH)4The water electrolysis hydrogen production performance of/C.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention rather than protects to the present invention
The limitation of shield range can also be made on the basis of above description and thinking for those of ordinary skill in the art
Other various forms of variations or variation, there is no necessity and possibility to exhaust all the enbodiments.It is all of the invention
Made any modifications, equivalent replacements, and improvements etc., should be included in the protection of the claims in the present invention within spirit and principle
Within the scope of.
Claims (9)
1. a kind of electrocatalyst materials NiCo2(CO3)(OH)4The preparation method of/C, which comprises the following steps:
S1. using methanol, ethyl alcohol or water as solvent, the solution A containing nickel nitrate, cobalt nitrate, hexamethylenetetramine, solution A are prepared
The Final molar ratio of middle nickel nitrate, cobalt nitrate and hexamethylenetetramine is (0.02~0.05): (0.04~0.1): (0.12~
0.3)；
S2. hydro-thermal reaction is carried out after the medium of carbon fibre material is added into solution A, obtains being carried on carbon fiber after washing is dry
Primary product on the medium of material；
S3. by Primary product and with solution A is isometric, NaOH solutions of pH=13 mixs and carry out hydro-thermal reaction, washing is dried
Afterwards to obtain the final product.
2. preparation method according to claim 1, which is characterized in that in step S1, nickel nitrate in solution A, cobalt nitrate and
Hexamethylenetetramine Final molar ratio is 1:2:6.
3. preparation method according to claim 1, which is characterized in that in step S1, whole mole of nickel nitrate in solution A
Concentration is 0.02~0.05 mol/L.
4. preparation method according to claim 1, which is characterized in that in step S2, the medium of the carbon fibre material is
Carbon fiber paper or carbon cloth.
5. preparation method according to claim 1, which is characterized in that in step S2, the condition of hydro-thermal reaction is 160~
190 DEG C, 10~18 h.
6. preparation method according to claim 1, which is characterized in that in step S3, hydrothermal reaction condition is 130~180
DEG C, 1~6 h.
7. the electrocatalyst materials NiCo that any preparation method of claim 1~6 is prepared2(CO3)(OH)4/C。
8. electrocatalyst materials NiCo described in claim 72(CO3)(OH)4Application of/the C as catalyst.
9. applying according to claim 8, which is characterized in that the catalyst is the elctro-catalyst of water electrolysis hydrogen production.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109939711A (en) * | 2019-03-07 | 2019-06-28 | 华东师范大学 | Glycerol auxiliary water decomposing hydrogen-production and the bifunctional electrocatalyst and preparation method of glycerol oxidation |
| CN110975907A (en) * | 2019-12-02 | 2020-04-10 | 大连理工大学 | Preparation method of foam nickel electrode loaded with iron and basic cobalt carbonate for catalyzing oxidation of water or organic matters |
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| CN110975907B (en) * | 2019-12-02 | 2021-09-10 | 大连理工大学 | Preparation method of foam nickel electrode loaded with iron and basic cobalt carbonate for catalyzing oxidation of water or organic matters |
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