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Vanadium disulfide nanometer rod array electrocatalyst and preparation method thereof

A vanadium disulfide nanometer and electrocatalyst technology, which is applied in physical/chemical process catalysts, chemical instruments and methods, electrodes, etc., can solve the problems of high price, easy poisoning, low earth reserves, etc., and achieve low cost and low synthesis temperature , the effect of high yield

Active Publication Date: 2019-01-18
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Platinum noble metals such as Pt and Pd are currently the best catalysts for the electrolysis of water and ammonia, but due to their high price, low earth reserves, and susceptibility to poisoning, they are difficult to be widely used in large-scale industrial production. Therefore, finding alternative catalysts for electrolysis of water has become an important topic in this field.

Method used

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  • Vanadium disulfide nanometer rod array electrocatalyst and preparation method thereof
  • Vanadium disulfide nanometer rod array electrocatalyst and preparation method thereof
  • Vanadium disulfide nanometer rod array electrocatalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] (1) Cut the carbon cloth into a rectangle of 1×5 cm, reflux and activate it in concentrated nitric acid at 80-120°C for 1-3 hours, then wash it with ethanol and deionized water for 3 times, and dry it at 50°C for 8 hours to get the treatment carbon cloth;

[0019] (2) Weigh 0.1g NaVO respectively 3 , 0.2g TAA (CH 3 CSNH 2 ) and 0.5g C 6 h 12 N 4 , dissolved in 20ml deionized water, and magnetically stirred at room temperature for 40min to obtain a clear solution;

[0020] (3) Put the carbon cloth treated in (1) into the reaction lining, pour the clarified solution obtained in (2), seal it for hydrothermal reaction, set the reaction temperature to 160°C, and the reaction time to 18h;

[0021] (4) After the reaction, the reaction kettle was naturally cooled to room temperature, the carbon cloth was taken out, and then washed with ethanol and deionized water for 3 times, and finally the carbon cloth was dried at 50°C for 8 hours to obtain uniform nanorod-shaped VS 2...

Embodiment 2

[0023] (1) Cut the carbon cloth into a rectangle of 1×5 cm, reflux and activate it in concentrated nitric acid at 80°C for 2 hours, then wash it with ethanol and deionized water for 4 times, and dry it at 50°C for 8 hours to obtain the treated carbon cloth;

[0024] (2) Weigh 0.3g NaVO respectively 3 , 0.9g TAA (CH 3 CSNH 2 ) and 0.8g C 6 h 12 N 4 , dissolved in 30ml deionized water, and magnetically stirred at room temperature for 40min to obtain a clear solution;

[0025] (3) Put the carbon cloth treated in (1) into the reaction lining, pour the clarified solution obtained in (2), seal it for hydrothermal reaction, set the reaction temperature to 200°C, and the reaction time to 22h;

[0026] (4) After the reaction, the reactor was naturally cooled to room temperature, the carbon cloth was taken out, and then washed three times with ethanol and deionized water, and finally the carbon cloth was dried at 50°C for 8 hours to obtain uniform nanorod VS 2 .

Embodiment 3

[0028] (1) Cut the carbon cloth into a rectangle of 1×5 cm, reflux and activate it in concentrated nitric acid at 80°C for 2 hours, then wash it with ethanol and deionized water for 5 times, and dry it at 60°C for 7 hours to obtain the treated carbon cloth;

[0029] (2) Weigh 0.4g NaVO respectively 3 , 1.2g TAA (CH 3 CSNH 2 ) and 1.2g C 6 h 12 N 4 , dissolved in 35ml deionized water, stirred magnetically at room temperature for 60min to obtain a clear solution;

[0030] (3) Put the carbon cloth treated in (1) into the reaction lining, pour the clarified solution obtained in (2), seal it for hydrothermal reaction, set the reaction temperature to 180°C, and the reaction time to 24h;

[0031] (4) After the reaction, the reactor was naturally cooled to room temperature, the carbon cloth was taken out, and then washed with ethanol and deionized water for 3 times, and finally the carbon cloth was dried at 60°C for 7 hours to obtain uniform nanorod-shaped VS 2 .

[0032] figu...

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Abstract

The invention provides a vanadium disulfide nanometer rod array electrocatalyst. A preparation method of the vanadium disulfide nanometer rod array electrocatalyst comprises the following steps of soaking a conductive carbon base into a solution of NaVO3: to CH3CSNH2: to C6H12N4 according to the mass ratio of (0.1 to 0.5) to (0.2 to 0.8): to (0.5 to 1.5); after hydrothermal reaction, uniform nanometer rod-shaped VS2 is obtained. The vanadium disulfide nanometer rod array electrocatalyst has the advantages that the synthesis temperature is low; the process is simple; the operation is easy; theraw materials are cheap and can be easily obtained; the cost is low; the yield is high; the later stage treatment is not needed; the environmental-friendly effect is achieved; the electrocatalyst canbe suitable for large-scale production; the prepared product has uniform chemical composition, high purity and uniform appearance; when the electrocatalyst is used as an water electrolyticsis water electrode material, excellent electrochemical performance can be shown; the overpotential under the current density of 10mA / cm<2> is about 206mV.

Description

technical field [0001] The invention belongs to the technical field of electrolytic water catalysts, and in particular relates to a vanadium disulfide nanorod array electrocatalyst and a preparation method thereof. Background technique [0002] Electrocatalytic water splitting technology is a method of hydrogen production widely used in industrial production due to its simple process and equipment. It is the most potential technology for developing sustainable and clean energy, and it is also an important research field direction. Platinum noble metals such as Pt and Pd are currently the best catalysts for the electrolysis of water and ammonia, but due to their high price, low earth reserves, and susceptibility to poisoning, they are difficult to be widely used in large-scale industrial production. Therefore, finding alternative catalysts for electrolysis of water has become an important topic in this field. Studies have shown that the valence state of vanadium is flexible...

Claims

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Application Information

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IPC IPC(8): B01J27/04C25B1/04C25B11/06
CPCB01J27/04C25B1/04C25B11/04Y02E60/36
Inventor 黄剑锋徐瑞冯亮亮曹丽云何丹阳杜盈盈
Owner SHAANXI UNIV OF SCI & TECH
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