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Method for preparing NiS@CC nano material by solvothermal

A nanomaterial and solvothermal technology, applied in the field of non-precious metal nanocomposite materials, can solve the problem of lack of high-performance non-precious metal electrocatalysts, and achieve the effect of low overpotential and large specific capacitance

Inactive Publication Date: 2019-10-25
NORTHWEST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the main bottleneck restricting its development is the lack of high-performance non-noble metal electrocatalysts.

Method used

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  • Method for preparing NiS@CC nano material by solvothermal
  • Method for preparing NiS@CC nano material by solvothermal
  • Method for preparing NiS@CC nano material by solvothermal

Examples

Experimental program
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Effect test

Embodiment 1

[0036] (1) Treatment of carbon cloth: The commercial carbon cloth was washed several times with acetone, distilled water and absolute ethanol in sequence, and dried at 60 °C for 6 h. Put the cleaned carbon cloth into a porcelain boat, then place it in a tube furnace, and heat it at 8 °C min in a nitrogen atmosphere. -1 Raise the temperature to 900°C for 1.5h, cool to room temperature; soak in concentrated hydrochloric acid for 2h, wash with distilled water and absolute ethanol several times until neutral, and vacuum dry at 60°C for 6h;

[0037](2) Preparation of NiS@CC nanomaterials: 1 mmol (290.79 mg) of nickel nitrate hexahydrate and 6 mmol (360 mg) of urea were dissolved in 15 mL of distilled water, and stirred at room temperature for 1 h. The mixed solution was transferred to a polytetrafluoroethylene reactor, and the treated carbon cloth (2 cm × 2 cm) was vertically placed in the mixed solution, and the reactor was sealed and placed in a dry box at 120 °C for hydrothermal...

Embodiment 2

[0040] (1) Treatment of carbon cloth: same as Example 1;

[0041] (2) Preparation of nanostructured NiS@CC-2 material: 1 mmol (290.79 mg) of nickel nitrate hexahydrate and 6 mmol (360 mg) of urea were dissolved in 15 mL of distilled water and stirred at room temperature for 1 h. The mixed solution was transferred to a polytetrafluoroethylene reactor, and the treated carbon cloth (2 cm × 2 cm) was vertically placed in the mixed solution, and the reactor was sealed and placed in a dry box at 120 °C for hydrothermal treatment. React for 12 hours; cool to room temperature, wash with distilled water and absolute ethanol several times, and vacuum-dry at 60°C for 6 hours to obtain the loaded precursor carbon cloth; dissolve 100 mg of sodium sulfide nonahydrate in 15 ml of distilled water, and stir at room temperature for 0.5 h; The mixed solution was transferred to a polytetrafluoroethylene reactor, and the carbon cloth loaded with the precursor carbon cloth was vertically placed in ...

Embodiment 3

[0044] (1) Treatment of carbon cloth: Sonicate commercial carbon cloth with acetone, distilled water and absolute ethanol for 2 hours respectively, and dry at 60°C for 6 hours;

[0045] (2) Preparation of nanostructured NiS@CC-3 material: 1 mmol (290.79 mg) of nickel nitrate hexahydrate and 6 mmol (360 mg) of urea were dissolved in 15 mL of distilled water and stirred at room temperature for 1 h. The mixed solution was transferred to a polytetrafluoroethylene reactor, and the treated carbon cloth (2 cm × 2 cm) was vertically placed in the mixed solution, and the reactor was sealed and placed in a dry box at 120 °C for hydrothermal treatment. React for 12 hours; cool to room temperature, wash with distilled water and absolute ethanol several times, and vacuum-dry at 60°C for 6 hours to obtain the loaded precursor carbon cloth; dissolve 90 mg of sodium sulfide nonahydrate in 15 mL of distilled water, and stir at room temperature for 0.5 h; The mixed solution was transferred to a...

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Abstract

The invention provides a method for preparing a nanostructure NiS@CC material. According to the method, carbon cloth is used as a base, nickel nitrate hexahydrate, sodium sulfide nonahydrate and ureaare used as raw materials, distilled water is used as a solvent, and the NiS@CC nano material with a graded porous structure is obtained by utilizing a solvothermal method in two steps. The nano material exhibits a relatively low overpotential and a relatively large specific capacitance under alkaline conditions, and can be used as an electrode material applied to energy conversion and storage systems such as electrocatalysis, supercapacitors and the like.

Description

technical field [0001] The invention relates to a method for preparing NiS@CC nanomaterials, in particular to a method for solvothermally preparing nanostructured NiS@CC materials, which are mainly used as electrode materials in energy storage devices such as electrocatalysis and supercapacitors, and belong to non-precious metals. field of nanocomposites. Background technique [0002] With the increasing consumption of fossil fuels and the increasing environmental pollution, new energy conversion and storage technologies will play a major role in the future sustainable energy strategy. Therefore, research and design of high-performance electrocatalysts and energy storage materials are important the most critical issue at the moment. Hydrogen energy is regarded as the most ideal clean energy because of its high energy density, clean, non-toxic and non-polluting energy conversion process. Generally, industrial hydrogen production methods mainly include electrocatalytic water...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M11/13D06M11/56D06M11/74D06M101/40
CPCD06M11/13D06M11/56D06M11/74D06M2101/40
Inventor 杨玉英张燕周祎魏苗苗孟海霞胡中爱
Owner NORTHWEST NORMAL UNIVERSITY
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