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Irregular spherical V-doped Ni3S2/NF oxygen evolution electrocatalyst and preparation method thereof

An electrocatalyst and irregular technology, applied in the direction of physical/chemical process catalysts, chemical instruments and methods, electrodes, etc., can solve the problems of ternary sulfides such as long time-consuming, complicated synthesis process, poor durability, etc., and achieve good electrocatalytic performance, Simple operation and environment-friendly effect

Active Publication Date: 2019-01-29
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology provides an improved catalyst for use with hydrogen gas generation from water or other sources that contains oxygen (O2). It allows for efficient conversion between chemical energy into electrical current without generating harmful gases like nitrogen oxide emissions during combustion processes. Additionally, this new type of material makes it easy to produce at lower costs than traditional materials while still having excellent properties such as high activity towards certain types of molecules.

Problems solved by technology

This patented technical problem addressed by this patents relates to finding better or cheaper catalyst material that offers higher performance at lower costs while also being stable during use without requiring excessive energy input from outside sources like electricity.

Method used

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  • Irregular spherical V-doped Ni3S2/NF oxygen evolution electrocatalyst and preparation method thereof
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  • Irregular spherical V-doped Ni3S2/NF oxygen evolution electrocatalyst and preparation method thereof

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Embodiment 1

[0016] (1) Sonicate nickel foam by immersing it in acetone solution for 10 minutes, then transfer it to 2mol / L hydrochloric acid for ultrasonic cleaning for 10 minutes, and finally wash it alternately with ethanol and ultrapure water for 3 times, and then vacuum-dry it at 35°C for 10 hours;

[0017] (2) Configure a precursor solution, which contains nickel chloride hexahydrate at a concentration of 0.05mol / L, vanadium chloride at a concentration of 0.0125mol / L, ammonium fluoride at a concentration of 0.05mol / L and Aqueous solution of 0.125mol / L urea, magnetically stirred at room temperature for 20min to obtain clear solution A. Transfer the clarified solution A and the nickel foam treated in step (1) into a high-temperature and high-pressure hydrothermal kettle, and then react at 100°C for 18 hours, and the reaction filling ratio should be controlled at 40%. After the hydrothermal reaction was completed, the reactor was naturally cooled to room temperature, and then the nickel...

Embodiment 2

[0020] (1) Soak nickel foam of 1cm x 5cm in acetone solution for 10 minutes, then transfer it to 2mol / L hydrochloric acid for 10 minutes, and finally rinse it with ethanol and ultrapure water for 3 times, and then clean it at 35°C. Vacuum drying for 10h;

[0021] (2) Configure a precursor solution, which contains nickel chloride hexahydrate at a concentration of 0.1mol / L, vanadium chloride at a concentration of 0.04mol / L, ammonium fluoride at a concentration of 0.05mol / L and Aqueous solution of 0.2mol / L urea, magnetically stirred at room temperature for 20min to obtain clear solution A. Transfer the clarified solution A and the nickel foam treated in step (1) into a high-temperature and high-pressure hydrothermal kettle, and then react at 120°C for 14 hours, and the reaction filling ratio should be controlled at 40%. After the hydrothermal reaction was completed, the reactor was naturally cooled to room temperature, and then the nickel foam cooled after the reaction was taken...

Embodiment 3

[0024] (1) Sonicate 1cm x 5cm nickel foam in acetone solution for 5 minutes, then immerse foam nickel in 2mol / L hydrochloric acid for 5 minutes, and finally rinse with ethanol and ultrapure water for 3 times respectively. After vacuum drying for 10°C, the treated foamed nickel was obtained;

[0025] (2) Configure a precursor solution, which contains nickel chloride hexahydrate at a concentration of 0.1mol / L, vanadium chloride at a concentration of 0.05mol / L, ammonium fluoride at a concentration of 0.05mol / L and Aqueous solution of 0.2mol / L urea, magnetically stirred at room temperature for 20min to obtain clear solution A. Transfer the clarified solution A and the nickel foam treated in step (1) into a high-temperature and high-pressure hydrothermal kettle, and then react at 140°C for 10 hours, and the reaction filling ratio should be controlled at 30%. After the hydrothermal reaction was completed, the reactor was naturally cooled to room temperature, and then the nickel foa...

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Abstract

The invention provides an irregular spherical V-doped Ni3S2/NF oxygen evolution electrocatalyst. The irregular spherical V-doped Ni3S2/NF oxygen evolution electrocatalyst comprises foam nickel used asa substrate, and irregular spherical V-doped Ni3S2 coated on the surface of the foam nickel. The irregular spherical V-doped Ni3S2/NF oxygen evolution electrocatalyst is obtained through the following method: soaking clean foam nickel into a precursor solution containing nickel chloride, vanadium chloride, ammonium fluoride and urea, and carrying out a first hydrothermal reaction; and soaking reacted foam nickel into an aqueous solution of thioacetamide, and carrying out a second hydrothermal reaction so as to obtain the irregular spherical V-doped Ni3S2/NF electrode material. The method provided by the invention has simple operation and low cost, is friendly to the environment, and can realize industrial production; and the product obtained by using the method provided by the invention has good electrocatalytic performance under an alkaline condition.

Description

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Claims

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Application Information

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Owner SHAANXI UNIV OF SCI & TECH
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