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Tungsten-doped nickel selenide sulfide film-coated nickel selenide sulfide nanorod growing on surface of foamed nickel and preparation method and application of nickel selenide sulfide nanorod

A technology of film wrapping and nickel selenide, which is applied in the field of new material technology and chemical synthesis, can solve the problem of large specific surface energy of single atoms, and achieve the effect of promoting electrochemical performance, convenient operation, and convenient operation

Pending Publication Date: 2020-05-08
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to their large specific surface energy, single atoms are easy to migrate and agglomerate, which poses many challenges in their synthesis.

Method used

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  • Tungsten-doped nickel selenide sulfide film-coated nickel selenide sulfide nanorod growing on surface of foamed nickel and preparation method and application of nickel selenide sulfide nanorod
  • Tungsten-doped nickel selenide sulfide film-coated nickel selenide sulfide nanorod growing on surface of foamed nickel and preparation method and application of nickel selenide sulfide nanorod
  • Tungsten-doped nickel selenide sulfide film-coated nickel selenide sulfide nanorod growing on surface of foamed nickel and preparation method and application of nickel selenide sulfide nanorod

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Step 1, take the selenium powder with a concentration of 5.76g / L, and dissolve the selenium powder with a hydrazine hydrate solution concentration of 2.5mol / L. At this time, mechanically stir at a speed of 1200r / min for 30min at room temperature to obtain a selenium source mixed solution , add thiourea concentration to be 5.56g / L, ammonium fluoride concentration be 8g / L and tungsten trioxide concentration be 11.13g / L in the above-mentioned selenium source mixed solution, then add 15mL dehydrated alcohol concentration to be 4mol / L and 9ml Deionized water was mechanically stirred at room temperature at a speed of 1200r / min for 30min to obtain a mixed solution;

[0031] Step 2: Activate the surface of the foamed nickel, take the foamed nickel and place it in acetone, alcohol, and deionized water for ultrasonic cleaning for 20 minutes, take out the foamed nickel and soak it in an acid solution for 6 hours, and place it in deionized water for 20 minutes after taking it out an...

Embodiment 2

[0046] Step 1, taking by weighing a concentration of 2.88g / L selenium dioxide, taking a hydrazine hydrate solution concentration of 1.5mol / L to dissolve selenium dioxide, at this time, mechanically stirring at a speed of 600r / min for 20min at room temperature to obtain a selenium source Mixed solution, adding thiourea concentration to the above-mentioned selenium source mixed solution is 8.34g / L, ammonium fluoride concentration is 10g / L and sodium tungstate concentration is 2g / L, then adds 12mL dehydrated alcohol concentration and is 3mol / L and 15ml of deionized water was mechanically stirred at room temperature at a speed of 600r / min for 20min to obtain a mixed solution;

[0047] Step 2, surface activation treatment of the foamed nickel, take the foamed nickel and place it in acetone, alcohol, and deionized water for ultrasonic cleaning for 5 minutes, take out the foamed nickel and place it in an acid solution for 12 hours, take it out and place it in deionized water for ultra...

Embodiment 3

[0052] Step 1, taking by weighing concentration is 8.64g / L selenocystine, and getting hydrazine hydrate solution concentration is 5mol / L to dissolve selenocystine, at this moment, carry out mechanical stirring 40min with the rotating speed of 1600r / min at room temperature, Obtain the selenium source mixed solution, add thiourea concentration to the above-mentioned selenium source mixed solution and be 2.78g / L, ammonium fluoride concentration be 10mol / L and ammonium tungstate concentration be 2g / L, then add 15mL dehydrated alcohol concentration and be 6mol / L and 5ml deionized water, mechanically stirred at room temperature at a speed of 1600r / min for 40min to obtain a mixed solution;

[0053] Step 2: Activate the foamed nickel surface, take the foamed nickel and place it in acetone, alcohol, and deionized water for ultrasonic cleaning for 40 minutes, take out the foamed nickel and soak it in an acid solution for 0.5 hours, take it out and place it in deionized water for ultraso...

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Abstract

The invention provides a tungsten-doped nickel selenide sulfide film coated nickel selenide sulfide nanorod growing on the surface of foamed nickel and a preparation method and application of the nickel selenide sulfide nanorod. The preparation method comprises the following steps: putting a selenium source into hydrazine hydrate, carrying out mechanical stirring and dissolving to obtain a selenium source mixed solution, adding thiourea, ammonium fluoride and a tungsten source into the selenium source mixed solution, and then adding absolute ethyl alcohol and deionized water to finally obtaina mixed solution; and pouring the mixed solution into a reaction kettle with a polytetrafluoroethylene lining, putting pretreated foamed nickel into the reaction kettle, carrying out hydrothermal treatment, carrying out cooling to room temperature of 20-25 DEG C, performing cleaning and drying, and carrying out annealing in a protective atmosphere. The preparation method is simple in preparation process, convenient to operate and high in repeatability; and the nickel selenide sulfide nanorod wrapped by a monatomic tungsten doped nickel selenide sulfide thin film growing on the foamed nickel insitu is uniform in distribution and large in length-diameter ratio, can be directly used as an electrode, does not need additional addition of a binder and a conductive agent, and has excellent energy catalytic application prospects.

Description

technical field [0001] The invention relates to the fields of new material technology and chemical synthesis technology, and more specifically relates to a nickel sulfoselenide nanorod wrapped with a tungsten-doped nickel sulfide selenide film grown on the surface of foamed nickel, and a preparation method and application thereof. Background technique [0002] With the development of modern society, energy problems and environmental problems are becoming more and more serious, so the development and utilization of new energy sources is imminent. There are still huge challenges in the development of technologies such as high-performance fuel cells and metal-air batteries due to the slow kinetics of hydrogen evolution reactions, oxygen evolution reactions, and large overpotentials. The anode with high-performance catalyzing hydrogen evolution reaction and the cathode catalyst material for oxygen evolution reaction can accelerate the reaction kinetics, thereby improving the per...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/057B01J35/02C25B1/04C25B11/02C25B11/06B01J35/00
CPCB01J27/0573C25B1/04C25B11/02C25B11/051C25B11/091B01J35/396B01J35/40B01J35/33Y02E60/36
Inventor 邓意达王杨胡文彬张金凤韩晓鹏钟澄李肖鹏
Owner TIANJIN UNIV
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