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Preparation method of MnCo2S4 oxygen evolution reaction electrocatalyst growing on carbon fiber cloth

A carbon fiber cloth, oxygen evolution reaction technology, applied in catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc. The effect of simple process, excellent conductivity and flexibility

Inactive Publication Date: 2020-11-10
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

MnCo 2 S 4 Extensively studied as electrode materials for supercapacitors but not as electrocatalysts for water splitting

Method used

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  • Preparation method of MnCo2S4 oxygen evolution reaction electrocatalyst growing on carbon fiber cloth
  • Preparation method of MnCo2S4 oxygen evolution reaction electrocatalyst growing on carbon fiber cloth
  • Preparation method of MnCo2S4 oxygen evolution reaction electrocatalyst growing on carbon fiber cloth

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Accurately weigh 1.5mmol manganese acetate tetrahydrate, 3mmol cobalt acetate tetrahydrate, 13.5mmol urea and 4.5mmol ammonium fluoride in 50ml ethylene glycol and water (v 乙二醇 :v 水 =1:1) in the mixed solvent, the precursor solution is obtained after fully stirring and dissolving completely;

[0027] (2) Cut 2×2cm 2 Put the carbon fiber cloth into acetone, deionized water, and absolute ethanol for ultrasonic cleaning for 10 minutes respectively. Put the cleaned carbon cloth into the solution configured in step (1), and stir fully;

[0028] (3) Transfer the solution and carbon cloth obtained in step (2) to a 70ml polytetrafluoroethylene-lined stainless steel reaction kettle, seal it, react at 180°C for 9 hours, cool to room temperature, take out the carbon cloth with tweezers and wash with water and ethanol , the pink precursor was obtained after drying at 60°C in the air;

[0029] (4) put the product obtained in step (3) into a stainless steel reaction kettle wi...

Embodiment 2

[0033] (1) Accurately weigh 2mmol manganese acetate tetrahydrate, 4mmol cobalt acetate tetrahydrate, 18mmol urea and 6mmol ammonium fluoride in 50ml ethylene glycol and water (v 乙二醇 :v 水 =1:1) in the mixed solvent, the precursor solution is obtained after fully stirring and dissolving completely;

[0034] (2) Cut 2×2cm 2 Put the carbon fiber cloth into acetone, deionized water, and absolute ethanol for ultrasonic cleaning for 10 minutes respectively. Put the cleaned carbon cloth into the solution configured in step (1), and stir fully;

[0035] (3) Transfer the solution and carbon cloth obtained in step (2) to a stainless steel reactor with a polytetrafluoroethylene liner of 70ml, seal it, react at 180°C for 9 hours, cool to room temperature, take out the carbon cloth with tweezers and wash with water and ethanol , the pink precursor was obtained after drying at 60°C in the air;

[0036] (4) Put the product obtained in step (3) into a stainless steel reaction kettle with a...

Embodiment 3

[0038] (1) Accurately weigh 1.25mmol manganese acetate tetrahydrate, 2.5mmol cobalt acetate tetrahydrate, 11.25mmol urea and 3.75mmol ammonium fluoride in 50ml ethylene glycol and water (v 乙二醇 :v 水 =1:1) in the mixed solvent, the precursor solution is obtained after fully stirring and dissolving completely;

[0039] (2) Cut 2×2cm 2 Put the carbon fiber cloth into acetone, deionized water, and absolute ethanol for ultrasonic cleaning for 10 minutes respectively. Put the cleaned carbon cloth into the solution configured in step (1), and stir fully;

[0040] (3) Transfer the solution and carbon cloth obtained in step (2) to a stainless steel reactor with a polytetrafluoroethylene liner of 70ml, seal it, react at 180°C for 9 hours, cool to room temperature, take out the carbon cloth with tweezers and wash with water and ethanol , the pink precursor was obtained after drying at 60°C in the air;

[0041] (4) Put the product obtained in step (3) into a stainless steel reaction ke...

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Abstract

The invention provides a preparation method of rugby-shaped MnCo2S4 micro-nano particles growing on carbon fiber cloth in a self-assembly mode, which can be directly used as an oxygen evolution reaction electrocatalyst and has good OER performance, high activity and stability. The preparation method comprises the following steps: firstly, generating a granular MnCo2S4 precursor on carbon fiber cloth by a solvothermal method, and then sulfurizing the precursor by a hydrothermal method to obtain MnCo2S4 micro-nano particles growing on the carbon fiber cloth. The preparation method is simple, controllable and low in cost. The carbon cloth has a net-shaped structure and excellent conductivity and flexibility and can be used as a substrate to support an active substance to prepare an electrode,and the obtained material can be directly used as a working electrode without adding any adhesive, so that the internal resistance and the quality are effectively reduced, and the material has excellent catalytic performance. The technical scheme has important significance for promoting the development of green chemistry.

Description

technical field [0001] The invention relates to the field of preparation of electrochemical materials, especially a rugby-shaped MnCo grown on carbon fiber cloth 2 S 4 Oxygen evolution reaction electrocatalyst and preparation method thereof. Background technique [0002] Energy and the environment are the most important issues of our time. The global demand for energy has been growing rapidly and is expected to triple within the next 15 years. However, most of the energy consumed so far comes from fossil fuels, and since reserves are limited and fossil fuels are non-renewable, the conversion of renewable energy is an encouraging solution to significantly reduce the dependence on fossil fuels Program. As a carrier of clean, carbon-free and renewable energy, hydrogen has become a research hotspot in clean energy in recent years. Although the hydrogen production technology based on fossil fuels is mature, it not only consumes a lot of fossil resources, but also generates a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/043B01J35/02B01J35/06B01J37/10B01J37/20C25B1/04C25B11/06B01J35/00
CPCB01J27/043B01J37/10B01J37/20C25B1/04B01J35/23B01J35/33B01J35/50B01J35/58Y02E60/36
Inventor 冯彩虹代政矫庆泽赵芸
Owner BEIJING INSTITUTE OF TECHNOLOGYGY