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Preparation method of round cake-like vanadium disulfide electrocatalyst

A vanadium disulfide, electrocatalyst technology, applied in physical/chemical process catalysts, chemical instruments and methods, electrodes, etc., can solve problems such as high cost and electrochemical application limitations, and achieve low synthesis temperature, simple synthesis route, raw materials Inexpensive and accessible effects

Inactive Publication Date: 2019-09-13
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, their scarcity and high cost limit their electrochemical applications

Method used

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  • Preparation method of round cake-like vanadium disulfide electrocatalyst
  • Preparation method of round cake-like vanadium disulfide electrocatalyst
  • Preparation method of round cake-like vanadium disulfide electrocatalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 1) Sonically clean the carbon paper in pure acetone solution for 5 minutes, then immerse the carbon paper in 3mol / L hydrochloric acid for 5 minutes, and finally wash it with ethanol and deionized water alternately for 3 times, and dry it in vacuum at 25°C for 15 hours to obtain Treated carbon paper;

[0030] 2) Press NaVO 3 :C 2 h 5 The molar ratio of NS is 1:5 to NaVO 3 and C 2 h 5 NS was added to 15ml ethanol at the same time and magnetically stirred at room temperature for 30min to obtain a clear solution A with a vanadium source concentration of 0.051mol / L;

[0031] 3) Pour the carbon paper and solution A treated in step 1) into the reaction liner to seal, install the reaction liner in the outer kettle and fix it, then place it in a homogeneous reactor for hydrothermal reaction at 160°C for 18 hours;

[0032] 4) After the hydrothermal reaction, the reactor was naturally cooled to room temperature, and the carbon paper was taken out and washed alternately with ...

Embodiment 2

[0034] 1) Sonically clean the carbon paper in pure acetone solution for 10 minutes, then immerse the carbon paper in 2mol / L hydrochloric acid for 10 minutes, and finally wash it with ethanol and deionized water alternately for 4 times, and dry it in vacuum at 35°C for 14 hours to obtain Treated carbon paper;

[0035] 2) Press NaVO 3 :C 2 h 5 The molar ratio of NS is 1:6 to NaVO 3 and C 2 h 5 NS was added to 15ml ethanol at the same time and magnetically stirred at room temperature for 40min to obtain a clear solution A with a vanadium source concentration of 0.08mol / L;

[0036] 3) Pour the carbon paper and solution A treated in step 1) into the reaction liner to seal, install the reaction liner in the outer kettle and fix it, then place it in a homogeneous reactor for hydrothermal reaction at 180°C for 20 hours;

[0037] 4) After the hydrothermal reaction, the reactor was naturally cooled to room temperature, and the carbon paper was taken out and washed alternately with...

Embodiment 3

[0039] 1) Sonically clean the carbon paper in pure acetone solution for 15 minutes, then immerse the carbon paper in 4mol / L hydrochloric acid for 10 minutes, and finally wash it with ethanol and deionized water alternately for 3 times, and dry it in vacuum at 40°C for 12 hours to obtain Treated carbon paper;

[0040] 2) Press NaVO 3 :C 2 h 5 The molar ratio of NS is 3:13 to NaVO 3 and C 2 h 5 NS was added to 20ml ethanol at the same time and magnetically stirred at room temperature for 45min to obtain a clear solution A with a vanadium source concentration of 0.1mol / L;

[0041] 3) Pour the carbon paper and solution A treated in step 1) into the reaction liner to seal, install the reaction liner in the outer kettle and fix it, then place it in a homogeneous reactor for hydrothermal reaction at 160°C for 20 hours;

[0042] 4) After the hydrothermal reaction, the reactor was naturally cooled to room temperature, and the carbon paper was taken out and washed alternately with...

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Abstract

A preparation method of a round cake-like vanadium disulfide electrocatalyst comprises the following steps: a carbon paper is immersed and ultrasonically washed in pure acetone and hydrochloric acid in sequence, then is washed, and undergoes vacuum drying to obtain a treated carbon paper; NaVO3 and C2H5NS are simultaneously added to ethanol to obtain a clarified solution A; the treated carbon paper and the solution A are poured into a reaction lining, the reaction lining is sealed, and is arranged and fixed in an outer kettle, the obtained kettle is placed in a homogeneous reactor, and a hydrothermal reaction is carried out; and after the hydrothermal reaction is completed, the reactor is naturally cooled to room temperature, and the carbon paper is taken out, is respectively washed with deionized water and ethanol alternately, and undergoes vacuum drying to obtain the round cake-like VS2 / CP. The prepared product has the advantages of uniform chemical composition, high purity and uniform morphology, has excellent electrochemical performances when used as a water electrolysis electrode material, and has an overpotential of about 365 mV at a current density of 100 mA / cm<2>.

Description

technical field [0001] The invention belongs to the technical field of electrolytic water catalysts, and in particular relates to a method for preparing a disc-like vanadium disulfide electrocatalyst. Background technique [0002] With the outbreak of the energy crisis and the emergence of environmental pollution, it is imperative to develop and develop clean energy. Hydrogen (H 2 ), as one of the clean and renewable energy sources, has become an ideal substitute for fossil fuels because of its high energy density and environmental friendliness. Electrocatalysis is an important way of clean energy conversion, which is of great significance to sustainable development. Hydrogen evolution reaction (HER) is being widely used as a high-efficiency and environment-friendly technology. [0003] Electrocatalytic water splitting technology is one of the most promising ways to produce hydrogen, and it is a technology with the most potential to develop sustainable and clean energy. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/04C25B11/06C25B1/04
CPCB01J27/04C25B11/04C25B1/04B01J35/33Y02E60/36
Inventor 施潇虎曹丽云冯亮亮黄剑锋
Owner SHAANXI UNIV OF SCI & TECH
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