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Mo-S/NF hydrogen evolution material, and preparation method and application thereof

A hydrogen evolution reaction and hydrogen evolution technology, applied in the field of hydrogen energy, can solve problems such as insufficient performance, and achieve the effects of low cost, improved hydrogen evolution performance, and low cost of raw materials

Inactive Publication Date: 2020-07-03
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the reaction of nickel foam material in acidic solution, it has insufficient performance in acidic solution

Method used

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  • Mo-S/NF hydrogen evolution material, and preparation method and application thereof
  • Mo-S/NF hydrogen evolution material, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Ammonium tetrathiomolybdate 0.5mmol

[0032] Thiourea 0.5mmol

[0033] Deionized water 10mL

[0034] The hydrogen evolution material is prepared by the preparation method of the following steps:

[0035] Dissolve 0.5 mmol of ammonium tetrathiomolybdate and 0.5 mmol of thiourea in 10 mL of deionized water, and sonicate in an ultrasonic oscillator for 5 min until stirred and dissolved. After seeing that there are no solid particles in the solution, transfer it to a high-pressure reactor, put in 8mm×8mm×1mm nickel foam, and heat it in water at 180°C for 12h. The Mo-S / NF was taken out and treated, put into a resistance furnace, fed with nitrogen, and calcined at a temperature of 300°C for 2 hours to finally obtain the Mo-S / NF hydrogen evolution material.

Embodiment 2

[0041] Ammonium tetrathiomolybdate 0.5mmol

[0042] Thiourea 1.0mmol

[0043] Deionized water 10mL

[0044] The hydrogen evolution material is prepared by the preparation method of the following steps:

[0045] Dissolve 0.5 mmol of ammonium tetrathiomolybdate and 1.0 mmol of thiourea in 10 mL of deionized water, and sonicate in an ultrasonic oscillator for 5 min until stirred and dissolved. After seeing that there are no solid particles in the solution, transfer it to a high-pressure reactor, put in 8mm×8mm×1mm nickel foam, and heat it in water at 180°C for 12h. The Mo-S / NF was taken out and treated, put into a resistance furnace, fed with nitrogen, and calcined at a temperature of 400°C for 2 hours to finally obtain the Mo-S / NF hydrogen evolution material.

Embodiment 3

[0051] Ammonium tetrathiomolybdate 0.5mmol

[0052] Thiourea 2.5mmol

[0053] Deionized water 10mL

[0054] The hydrogen evolution material is prepared by the preparation method of the following steps:

[0055] Dissolve 0.5 mmol of ammonium tetrathiomolybdate and 2.5 mmol of thiourea in 10 mL of deionized water, and sonicate in an ultrasonic oscillator for 5 minutes until stirred and dissolved. After seeing that there are no solid particles in the solution, transfer it to a high-pressure reactor, put in 8mm×8mm×1mm nickel foam, and heat it in water at 180°C for 12h. The Mo-S / NF was taken out and treated, put into a resistance furnace, fed with nitrogen, and calcined at a temperature of 400°C for 2 hours to finally obtain the Mo-S / NF hydrogen evolution material.

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Abstract

The invention relates to a Mo-S / NF hydrogen evolution material, and a preparation method and an application thereof. The preparation method comprises the following steps: 1, mixing ammonium tetrathiomolybdate, thiourea and water, and carrying out ultrasonic dispersion to obtain a mixed solution; 2) adding the mixed solution into a reaction kettle, putting foamed nickel as a carrier into the reaction kettle, and performing a hydrothermal reaction to obtain Mo-S / NF; and 3) calcining the Mo-S / NF under an oxygen-free condition to obtain the Mo-S / NF hydrogen evolution material. The hydrogen evolution material is applied to an electrocatalytic hydrogen evolution reaction. Compared with like materials in the prior art, the Mo-S / NF hydrogen evolution material prepared in the invention is low in raw material cost, simple in preparation mode and good in hydrogen evolution effect in an alkaline solution, and is expected to face industrial development.

Description

technical field [0001] The invention belongs to the technical field of hydrogen energy, and relates to a Mo-S / NF hydrogen evolution material and its preparation method and application. Background technique [0002] With the depletion of fossil fuels, various new energy sources are constantly being developed and utilized. As a renewable secondary energy source, hydrogen energy has a wide range of sources, high calorific value, cleanliness, and good combustion stability. It is a new generation of energy carriers widely used after fossil fuels and other non-renewable energy sources. Hydrogen production by alkaline electrolysis of water is the most potential technical means leading to the hydrogen economy, but due to the existence of hydrogen evolution and oxygen evolution overpotentials in the electrolysis process, the reaction consumes a lot of energy. In order to reduce energy consumption, it is of great significance to develop cathode electrode materials with low cost and h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/051C25B11/06C25B11/12C25B1/04
CPCB01J27/051C25B1/04C25B11/051C25B11/091B01J35/33B01J35/61Y02E60/36
Inventor 蒋继波丛海山陈宇凯孔玥唐家斌胡晓敏王露露李学剑韩生
Owner SHANGHAI INST OF TECH
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