CN110227493A - The preparation method of one type round pie vanadium disulfide elctro-catalyst - Google Patents

The preparation method of one type round pie vanadium disulfide elctro-catalyst Download PDF

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Publication number
CN110227493A
CN110227493A CN201910603813.2A CN201910603813A CN110227493A CN 110227493 A CN110227493 A CN 110227493A CN 201910603813 A CN201910603813 A CN 201910603813A CN 110227493 A CN110227493 A CN 110227493A
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round pie
elctro
carbon paper
preparation
reaction
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施潇虎
曹丽云
冯亮亮
黄剑锋
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Shaanxi University of Science and Technology
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Shaanxi University of Science and Technology
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J27/00Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
    • B01J27/02Sulfur, selenium or tellurium; Compounds thereof
    • B01J27/04Sulfides
    • B01J35/33
    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25BELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B1/00Electrolytic production of inorganic compounds or non-metals
    • C25B1/01Products
    • C25B1/02Hydrogen or oxygen
    • C25B1/04Hydrogen or oxygen by electrolysis of water
    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25BELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B11/00Electrodes; Manufacture thereof not otherwise provided for
    • C25B11/04Electrodes; Manufacture thereof not otherwise provided for characterised by the material
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30Hydrogen technology
    • Y02E60/36Hydrogen production from non-carbon containing sources, e.g. by water electrolysis

Abstract

Carbon paper is successively immersed in pure acetone and hydrochloric acid after being cleaned by ultrasonic and rinses the vacuum drying carbon paper that obtains that treated well by the preparation method of one type round pie vanadium disulfide elctro-catalyst;By NaVO3And C2H5NS is added in ethyl alcohol obtains clear solution A simultaneously;The carbon paper handled well is poured into react in liner with solution A and is sealed, reaction liner is subjected to hydro-thermal reaction loaded on fixed be placed in homogeneous reaction instrument in outer kettle;Reaction kettle is naturally cooled into room temperature after hydro-thermal reaction, takes out after carbon paper is alternately cleaned up with deionized water and ethyl alcohol respectively and is dried in vacuo to obtain class round pie VS2/CP.Product chemistry composition prepared by the present invention is uniform, and purity is high, pattern is uniform, excellent chemical property can be shown when as electrolysis water electrode material, in 100mA/cm2Current density under, overpotential is about 365mV.

Description

The preparation method of one type round pie vanadium disulfide elctro-catalyst
Technical field
The invention belongs to electrolysis water catalyst technical fields, and in particular to the system of a type round pie vanadium disulfide elctro-catalyst Preparation Method.
Background technique
With the generation of outburst and the environmental pollution of energy crisis, exploitation is very urgent with clean energy resource is developed.Hydrogen (H2) as one of clean reproducible energy, because it is with highdensity energy and environment friendly, have become fossil fuel Ideal substitute.Electro-catalysis is a kind of important channel of clean energy resource conversion, it is of great significance to sustainable development.Analysis Hydrogen reaction (HER) is just being widely used as a kind of high efficiency and environmentally friendly technology.
Electrocatalytic decomposition water technology is one of most promising approach of hydrogen manufacturing, is one and develops sustainable clean energy resource most Potential technology.So far, for electrolysis water, most effective elctro-catalyst is noble metal, such as platinum (Pt), and valuableness / toxic OER oxide, such as yttrium oxide (IrO2) and ruthenium-oxide (RuO2).However, their scarcity and high cost make Their electrochemical applications are restricted.Therefore, developing high activity elctro-catalyst abundant is numerous researcher's concerns at present Emphasis.
Studies have shown that vanadium disulfide has unique layer structure, be conducive to the absorption and dissociation of ion, and the valence of vanadium State flexibly (+3 ,+4 ,+5), has good reactivity, in addition, can effectively promote by catalyst in conjunction with conductive substrates It is transmitted into charge, and can significantly enhance its catalytic activity and stability.
Summary of the invention
It is an object of the invention to propose a kind of class round pie vanadium disulfide elctro-catalyst (VS grown on carbon paper2/ CP preparation method), this method is easy to operate, and reaction condition is mild, short, the VS of preparation of time-consuming2/ CP product purity is high, pattern And size uniformity, and electrocatalysis characteristic is excellent.
To achieve the goals above, the invention adopts the following technical scheme:
1) carbon paper is immersed in pure acetone solution after being cleaned by ultrasonic, then carbon paper is immersed in hydrochloric acid and is cleaned by ultrasonic, finally divided The vacuum drying carbon paper that obtains that treated is not replaced after rinsing well with deionized water with ethyl alcohol;
2) NaVO is pressed3: C2H5The molar ratio of NS is (1~5): (5~25) are by NaVO3And C2H5NS is added to 15 simultaneously~ Magnetic agitation at room temperature in 25ml ethyl alcohol obtains the clear solution A that vanadium source concentration is (0.05~0.125) mol/L;
3) carbon paper that step 1) is handled well is poured into react with solution A and is sealed in liner, by reaction liner loaded in outer kettle Fixed be placed in homogeneous reaction instrument carries out hydro-thermal reaction;
4) reaction kettle is naturally cooled into room temperature after hydro-thermal reaction, takes out carbon paper and deionized water and ethyl alcohol is used to hand over respectively For being dried in vacuo to obtain class round pie VS after cleaning up2/CP。
5~15min of ultrasonic cleaning of the step 1).
The concentration of hydrochloric acid of the step 1) is 2~4mol/L.
The step 1) replaces flushing 3~5 times with deionized water with ethyl alcohol respectively.
Step 1) the vacuum drying temperature is 25~40 DEG C, and drying time is 10~15h.
30~50min of the step 2) magnetic agitation.
The hydro-thermal reaction of the step 3) is 18~20h of reaction at 160~180 DEG C.
The step 4) is replaced 3 times with deionized water and ethyl alcohol respectively.
Step 4) the vacuum drying temperature is 40~70 DEG C, and drying time is 5~10h.
This patent uses efficient, simple and inexpensive one step hydro thermal method, and class round pie curing is prepared on carbon paper Electrolysis water Hydrogen Evolution Performance is effectively promoted in vanadium elctro-catalyst.
The beneficial effects of the present invention are embodied in:
1) this method is since it using a step hydro-thermal reaction directly synthesizes final product, thus has low synthesis temperature Degree, simple synthesis path do not need large scale equipment and harsh reaction condition, and raw material is cheap and easy to get, at low cost, and yield is high, It is environmentally friendly without post-processing, it can be suitble to be mass produced.
2) VS of this method preparation2It is grown in carbon paper substrate, forms class round pie VS2/CP.This structure is conducive to Electrolyte and VS2/ CP's comes into full contact with, and is also beneficial to the free entry and exit of ion, can then greatly enhance its chemical property.
3) the product chemistry composition of this method preparation is uniform, and purity is high, pattern is uniform, when being used as electrolysis water electrode material Excellent chemical property can be shown, in 100mA/cm2Current density under, overpotential is about 365mV.
Detailed description of the invention
Fig. 1 is class round pie VS prepared by the embodiment of the present invention 32X-ray diffraction (XRD) map of/CP;
Fig. 2 is class round pie VS prepared by the embodiment of the present invention 32Scanning electron microscope (SEM) photo of/CP;
Fig. 3 is class round pie VS prepared by the embodiment of the present invention 32Production hydrogen (HER) linear sweep voltammetry (LSV) of/CP is bent Line.
Specific embodiment
With reference to the accompanying drawing and specific embodiment the invention will be described in further detail:
Embodiment 1:
1) carbon paper is immersed in pure acetone solution and is cleaned by ultrasonic 5min, then ultrasound in the hydrochloric acid of carbon paper immersion 3mol/L is clear 5min is washed, finally replace respectively with ethyl alcohol with deionized water and is rinsed 3 times, at 25 DEG C, is dried in vacuo the 15h carbon that obtains that treated Paper;
2) NaVO is pressed3: C2H5The molar ratio of NS is 1:5 by NaVO3And C2H5NS is added in 15ml ethyl alcohol at room temperature simultaneously Magnetic agitation 30min obtains the clear solution A that vanadium source concentration is 0.051mol/L;
3) carbon paper that step 1) is handled well is poured into react with solution A and is sealed in liner, by reaction liner loaded in outer kettle Fixation is placed in homogeneous reaction instrument in 160 DEG C of hydro-thermal reaction 18h;
4) reaction kettle is naturally cooled into room temperature after hydro-thermal reaction, takes out carbon paper and deionized water and ethyl alcohol is used to hand over respectively For cleaning 3 times after obtain class round pie VS in 40 DEG C of vacuum drying 10h2/CP。
Embodiment 2:
1) carbon paper is immersed in pure acetone solution and is cleaned by ultrasonic 10min, then carbon paper is immersed into ultrasound in the hydrochloric acid of 2mol/L 10min is cleaned, finally replace respectively with ethyl alcohol with deionized water and is rinsed 4 times, at 35 DEG C, 14h is dried in vacuo and obtains that treated Carbon paper;
2) NaVO is pressed3: C2H5The molar ratio of NS is 1:6 by NaVO3And C2H5NS is added in 15ml ethyl alcohol at room temperature simultaneously Magnetic agitation 40min obtains the clear solution A that vanadium source concentration is 0.08mol/L;
3) carbon paper that step 1) is handled well is poured into react with solution A and is sealed in liner, by reaction liner loaded in outer kettle Fixation is placed in homogeneous reaction instrument in 180 DEG C of hydro-thermal reaction 20h;
4) reaction kettle is naturally cooled into room temperature after hydro-thermal reaction, takes out carbon paper and deionized water and ethyl alcohol is used to hand over respectively For cleaning 3 times after obtain class round pie VS in 50 DEG C of vacuum drying 8h2/CP。
Embodiment 3:
1) carbon paper is immersed in pure acetone solution and is cleaned by ultrasonic 15min, then carbon paper is immersed into ultrasound in the hydrochloric acid of 4mol/L 10min is cleaned, finally replace respectively with ethyl alcohol with deionized water and is rinsed 3 times, at 40 DEG C, 12h is dried in vacuo and obtains that treated Carbon paper;
2) NaVO is pressed3: C2H5The molar ratio of NS is 3:13 by NaVO3And C2H5NS is added in 20ml ethyl alcohol at room temperature simultaneously Magnetic agitation 45min obtains the clear solution A that vanadium source concentration is 0.1mol/L;
3) carbon paper that step 1) is handled well is poured into react with solution A and is sealed in liner, by reaction liner loaded in outer kettle Fixation is placed in homogeneous reaction instrument in 160 DEG C of hydro-thermal reaction 20h;
4) reaction kettle is naturally cooled into room temperature after hydro-thermal reaction, takes out carbon paper and deionized water and ethyl alcohol is used to hand over respectively For cleaning 3 times after obtain class round pie VS in 60 DEG C of vacuum drying 6h2/CP。
Fig. 1 is class round pie VS manufactured in the present embodiment2X-ray diffraction (XRD) map of/CP.It can from Fig. 1 Long on graphite paper out to have gone up substance, corresponding product is VS2/VOOH。
Fig. 2 is class round pie VS manufactured in the present embodiment2Scanning electron microscope (SEM) photo of/CP.It can from the SEM figure of Fig. 2 To find out that the sample is to be grown on graphite paper to stack the nano flower formed by nanometer sheet.
Fig. 3 is class round pie VS prepared by the embodiment of the present invention 32Production hydrogen (HER) linear sweep voltammetry (LSV) of/CP is bent Line.From figure 3, it can be seen that the sample is 100mA/cm in current density2When, its overpotential is 365mV.With good Electrocatalytic hydrogen evolution activity.
Embodiment 4:
1) carbon paper is immersed in pure acetone solution and is cleaned by ultrasonic 15min, then carbon paper is immersed into ultrasound in the hydrochloric acid of 4mol/L 15min is cleaned, finally replace respectively with ethyl alcohol with deionized water and is rinsed 5 times, at 40 DEG C, 10h is dried in vacuo and obtains that treated Carbon paper;
2) NaVO is pressed3: C2H5The molar ratio of NS is 5:18 by NaVO3And C2H5NS is added in 25ml ethyl alcohol at room temperature simultaneously Magnetic agitation 50min obtains the clear solution A that vanadium source concentration is 0.125mol/L;
3) carbon paper that step 1) is handled well is poured into react with solution A and is sealed in liner, by reaction liner loaded in outer kettle Fixation is placed in homogeneous reaction instrument in 180 DEG C of hydro-thermal reaction 18h;
4) reaction kettle is naturally cooled into room temperature after hydro-thermal reaction, takes out carbon paper and deionized water and ethyl alcohol is used to hand over respectively For cleaning 3 times after obtain class round pie VS in 70 DEG C of vacuum drying 5h2/CP。
Embodiment 5:
1) carbon paper is immersed in pure acetone solution and is cleaned by ultrasonic 12min, then carbon paper is immersed into ultrasound in the hydrochloric acid of 3mol/L 12min is cleaned, finally replace respectively with ethyl alcohol with deionized water and is rinsed 4 times, at 30 DEG C, 13h is dried in vacuo and obtains that treated Carbon paper;
2) NaVO is pressed3: C2H5The molar ratio of NS is 2:25 by NaVO3And C2H5NS is added in 23ml ethyl alcohol at room temperature simultaneously Magnetic agitation 35min obtains the clear solution A that vanadium source concentration is 0.11mol/L;
3) carbon paper that step 1) is handled well is poured into react with solution A and is sealed in liner, by reaction liner loaded in outer kettle Fixation is placed in homogeneous reaction instrument in 170 DEG C of hydro-thermal reaction 19h;
4) reaction kettle is naturally cooled into room temperature after hydro-thermal reaction, takes out carbon paper and deionized water and ethyl alcohol is used to hand over respectively For cleaning 3 times after obtain class round pie VS in 50 DEG C of vacuum drying 8h2/CP。

Claims (9)

1. the preparation method of a type round pie vanadium disulfide elctro-catalyst, it is characterised in that the following steps are included:
1) carbon paper is immersed in pure acetone solution after being cleaned by ultrasonic, then carbon paper is immersed in hydrochloric acid and is cleaned by ultrasonic, finally used respectively Ethyl alcohol replaces with deionized water rinse well after the vacuum drying carbon paper that obtains that treated;
2) NaVO is pressed3: C2H5The molar ratio of NS is (1~5): (5~25) are by NaVO3And C2H5NS is added to 15~25ml second simultaneously Magnetic agitation at room temperature in alcohol obtains the clear solution A that vanadium source concentration is 0.05~0.125mol/L;
3) carbon paper that step 1) is handled well is poured into react with solution A and is sealed in liner, by reaction liner loaded on fixed in outer kettle It is placed in homogeneous reaction instrument and carries out hydro-thermal reaction;
4) reaction kettle is naturally cooled into room temperature after hydro-thermal reaction, takes out carbon paper and uses deionized water and ethyl alcohol alternating clear respectively Class round pie VS is dried in vacuo to obtain after wash clean2/CP。
2. the preparation method of class round pie vanadium disulfide elctro-catalyst according to claim 1, it is characterised in that: the step Rapid 5~15min of ultrasonic cleaning 1).
3. the preparation method of class round pie vanadium disulfide elctro-catalyst according to claim 1, it is characterised in that: the step Rapid concentration of hydrochloric acid 1) is 2~4mol/L.
4. the preparation method of class round pie vanadium disulfide elctro-catalyst according to claim 1, it is characterised in that: the step It is rapid 1) to replace flushing 3~5 times with deionized water with ethyl alcohol respectively.
5. the preparation method of class round pie vanadium disulfide elctro-catalyst according to claim 1, it is characterised in that: the step Rapid 1) vacuum drying temperature is 25~40 DEG C, and drying time is 10~15h.
6. the preparation method of class round pie vanadium disulfide elctro-catalyst according to claim 1, it is characterised in that: the step Rapid 2) 30~50min of magnetic agitation.
7. the preparation method of class round pie vanadium disulfide elctro-catalyst according to claim 1, it is characterised in that: the step Rapid hydro-thermal reaction 3) is 18~20h of reaction at 160~180 DEG C.
8. the preparation method of class round pie vanadium disulfide elctro-catalyst according to claim 1, it is characterised in that: the step It is rapid 4) to be replaced 3 times with deionized water and ethyl alcohol respectively.
9. the preparation method of class round pie vanadium disulfide elctro-catalyst according to claim 1, it is characterised in that: the step Rapid 4) vacuum drying temperature is 40~70 DEG C, and drying time is 5~10h.
CN201910603813.2A 2019-07-05 2019-07-05 The preparation method of one type round pie vanadium disulfide elctro-catalyst Pending CN110227493A (en)

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Cited By (3)

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Publication number Priority date Publication date Assignee Title
CN110921704A (en) * 2019-12-09 2020-03-27 易航时代(北京)科技有限公司 Vanadium disulfide @ carbon paper nano material, preparation method thereof and magnesium-lithium double-ion battery
CN114142048A (en) * 2021-11-30 2022-03-04 成都先进金属材料产业技术研究院股份有限公司 Electrode modification method for vanadium cell
CN114142043A (en) * 2021-11-30 2022-03-04 成都先进金属材料产业技术研究院股份有限公司 Method for improving electrochemical performance of electrode for vanadium battery

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110921704A (en) * 2019-12-09 2020-03-27 易航时代(北京)科技有限公司 Vanadium disulfide @ carbon paper nano material, preparation method thereof and magnesium-lithium double-ion battery
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CN114142043A (en) * 2021-11-30 2022-03-04 成都先进金属材料产业技术研究院股份有限公司 Method for improving electrochemical performance of electrode for vanadium battery
CN114142048B (en) * 2021-11-30 2023-10-27 成都先进金属材料产业技术研究院股份有限公司 Electrode modification method for vanadium battery
CN114142043B (en) * 2021-11-30 2023-10-27 成都先进金属材料产业技术研究院股份有限公司 Method for improving electrochemical performance of electrode for vanadium battery

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