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Preparation method and application of metallic nickel-based nano material

A nanomaterial, nickel-based technology, applied in the analysis of materials, electrochemical variables of materials, material analysis by electromagnetic means, etc.

Active Publication Date: 2020-10-27
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This electrochemical in-situ preparation method of nickel-based material SD-NiO (sulfide derived NiO) has not been reported yet.

Method used

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  • Preparation method and application of metallic nickel-based nano material
  • Preparation method and application of metallic nickel-based nano material
  • Preparation method and application of metallic nickel-based nano material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A preparation method of metal nickel-based nanomaterial (SD-NiO), comprising the following steps:

[0034] Step 1: NiO is electrodeposited on conductive substrate carbon paper (CP): the carbon paper washed with ethanol and deionized water is used as the working electrode, Pt is used as the counter electrode, and saturated calomel electrode (SCE) is used as the reference electrode, and 100mM Concentration of nickel sulfate hexahydrate (NiSO 4 ·6H 2 O) Ni ​​for electrodeposition 2+ Solution, a constant potential of -1V was applied for 180s at room temperature to conduct NiO electrodeposition, and the nickel oxide supported on the obtained carbon paper was rinsed with deionized water and air-dried at room temperature.

[0035] Step 2: Sulfurization in a tube furnace to convert NiO to NiS 2 : The NiO-deposited carbon substrate material was placed in the center of a tube furnace, the sulfur powder was placed upstream of the furnace, and the inert atmosphere N 2 In the pr...

Embodiment 2

[0039] A preparation method of metal nickel-based nanomaterial (SD-NiO), comprising the following steps:

[0040] Step 1: NiO is electrodeposited on conductive substrate carbon paper (CP): the carbon paper cleaned by ethanol and deionized water is used as the working electrode, Pt is used as the counter electrode, and saturated calomel electrode (SCE) is used as the reference electrode. Prepare 150mM Concentration of nickel sulfate hexahydrate (NiSO 4 ·6H 2 O) Ni ​​for electrodeposition 2+ solution, a constant potential of -1V was applied at room temperature for 90s to conduct NiO electrodeposition, and the nickel oxide supported on the obtained carbon paper was rinsed in deionized water and air-dried at room temperature.

[0041] Step 2: Sulfurization in a tube furnace to convert NiO to NiS 2 : The NiO-deposited carbon substrate material was placed in the center of a tube furnace, the sulfur powder was placed upstream of the furnace, and the inert atmosphere N 2 In the pr...

Embodiment 3

[0054] A preparation method of metal nickel-based nanomaterial (SD-NiO), comprising the following steps:

[0055] Step 1: NiO is electrodeposited on conductive substrate carbon paper (CP): the carbon paper cleaned by ethanol and deionized water is used as the working electrode, Pt is used as the counter electrode, and saturated calomel electrode (SCE) is used as the reference electrode, and a 200mM Concentration of nickel sulfate hexahydrate (NiSO 4 ·6H 2 O) Ni ​​for electrodeposition 2+ Solution, a constant potential of -1V was applied for 60s at room temperature to conduct NiO electrodeposition, and the nickel oxide supported on the obtained carbon paper was rinsed with deionized water and air-dried at room temperature.

[0056] Step 2: Sulfurization in a tube furnace to convert NiO to NiS 2 : The NiO-deposited carbon substrate material was placed in the center of a tube furnace, the sulfur powder was placed upstream of the furnace, and the inert atmosphere N 2 In the pr...

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Abstract

The invention belongs to the technical field of nano material synthesis, and relates to preparation of nickel oxide and nickel sulfide nano materials, in particular to a preparation method of a metalnickel-based nano material. The method comprises the following steps of: firstly electrodepositing and loading NiO on a conductive substrate material, flushing the obtained carbon substrate compositenickel oxide in deionized water, and performing natural air-drying in a room-temperature environment; placing the NiO deposited carbon substrate material in the center of a tubular furnace, carrying out vulcanization treatment, and converting NiO into NiS2; and finally, carrying out continuous cyclic voltammetry scanning on the synthesized nickel sulfide in 1M KOH electrolyte. The nickel sulfide derived nickel oxide-based (SD-NiO) composite material is prepared by adopting an electrochemical oxidation method, wherein the nickel sulfide derived nickel oxide and carbon paper form a three-dimensional unified composite structure, and the synergistic effect of the nickel sulfide derived nickel oxide and the carbon paper enables the material to have better OER performance, so that the requirements of low cost, high performance and high stability of the catalytic material can be met. The whole preparation process is simple to operate, green, environment-friendly and low in cost, and does notcontain any surfactant.

Description

technical field [0001] The invention belongs to the technical field of nanomaterial synthesis, and relates to the preparation of nickel oxide and nickel sulfide nanomaterials, in particular to a preparation method and application of metal nickel-based nanomaterials. Background technique [0002] Since the first and second industrial revolutions, new inventions and technologies have brought great convenience to modern society. However, the energy required for the most advanced technologies relies on carbon-based fuels such as coal, natural gas and oil. The depletion of these limited resources and their impact on the environment has prompted various researchers to seek alternative energy sources. In order to achieve more efficient energy conversion or storage systems, many innovative ideas have been proposed, such as alkaline water electrolysis, fuel cells, and metal-air batteries. Complicated, but the basic idea is relatively simple. They are all two-electrode systems in w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G53/04C01G53/11G01N27/30C25B1/04
CPCC01G53/04C01G53/11G01N27/308C25B1/04C01P2006/40C01P2002/72C01P2004/04C01P2002/85Y02E60/36
Inventor 施伟东陆亚辉
Owner JIANGSU UNIV
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