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Sulfur vacancy-containing NiS quantum dot/S, N, O co-doped carbon electrode material and preparation method thereof

A technology of electrode materials and quantum dots, applied in the direction of electrodes, chemical instruments and methods, electrolytic components, etc., can solve the problems of difficult interface coupling, complicated and cumbersome electrode process, and low electrocatalytic efficiency, so as to facilitate charge transfer and improve High hydrogen evolution performance and high electrocatalytic efficiency

Pending Publication Date: 2021-11-26
乌海瑞森新能源材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the shortcomings of the NiS / C catalyst electrode prepared in the prior art, which are complex and cumbersome, require multi-step synthesis, are difficult to achieve tight interface coupling, low electrocatalytic efficiency, and poor long-term stability, a green and efficient one-step reaction is proposed. strategy, through one-step pyrolysis, vulcanization and coupled synergistic reactions, a composite electrode material in which NiS quantum dots with sulfur vacancies are uniformly embedded in the S, N, O co-doped carbon network grown on carbon cloth is prepared, which greatly improves the Electrochemical Activity and Stability

Method used

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  • Sulfur vacancy-containing NiS quantum dot/S, N, O co-doped carbon electrode material and preparation method thereof
  • Sulfur vacancy-containing NiS quantum dot/S, N, O co-doped carbon electrode material and preparation method thereof
  • Sulfur vacancy-containing NiS quantum dot/S, N, O co-doped carbon electrode material and preparation method thereof

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Effect test

Embodiment 1

[0022] (1) 0.005mol NiCl 2 ·6H 2 O. Mix 0.0075mol methylthiouracil and 0.01mol ethylene glycol, heat and stir in an oil bath at 70°C for 0.4h to form a homogeneous liquid;

[0023] (2) Apply the homogeneous liquid obtained in step (1) evenly on the surface of the carbon cloth, put the obtained carbon cloth into a porcelain boat, wrap the porcelain boat with aluminum foil, put the wrapped porcelain boat into a tube furnace, Replace the air with high-purity nitrogen, heat to 550°C at a rate of 5°C / min under airtight conditions, and keep it for 4h to obtain sulfur-vacancy NiS quantum dots / S, N, O co-doped carbon grown on carbon cloth Network structure composites.

Embodiment 2

[0025] (1) 0.005mol NiCl 2 ·6H 2 O. Mix 0.0075mmol methylthiouracil and 0.02mmol ethylene glycol, heat and stir in an oil bath at 70°C for 0.4h to form a homogeneous liquid;

[0026] (2) Apply the homogeneous liquid obtained in step (1) evenly on the surface of the carbon cloth, put the obtained carbon cloth into a porcelain boat, wrap the porcelain boat with aluminum foil, put the wrapped porcelain boat into a tube furnace, Replace the air with high-purity nitrogen, heat to 550°C at a rate of 5°C / min under airtight conditions, and keep it for 4h to obtain sulfur-vacancy NiS quantum dots / S, N, O co-doped carbon grown on carbon cloth Network structure composites.

Embodiment 3

[0028] (1) 0.005mmol NiCl 2 ·6H 2 O. Mix 0.0075mmol methylthiouracil and 0.005mol ethylene glycol, heat and stir in an oil bath at 70°C for 0.4h to form a homogeneous liquid;

[0029] (2) Apply the homogeneous liquid obtained in step (1) evenly on the surface of the carbon cloth, put the obtained carbon cloth into a porcelain boat, wrap the porcelain boat with aluminum foil, put the wrapped porcelain boat into the tube furnace, Replace the air with high-purity nitrogen, heat to 550°C at a rate of 5°C / min under airtight conditions, and keep it for 4h to obtain sulfur-vacancy NiS quantum dots / S, N, O co-doped carbon grown on carbon cloth Network structure composites.

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Abstract

The invention discloses a sulfur vacancy-containing NiS quantum dot / S, N, O co-doped carbon network electrode material and a preparation method thereof. The sulfur vacancy-containing NiS quantum dots are uniformly embedded in an S, N, O co-doped carbon network grown on carbon cloth to form a carbon cloth self-supported composite electrode material. The preparation method comprises the following steps of mixing NiCl2.6H2O, methyl thiouracil and ethylene glycol, heating and stirring to form a homogeneous liquid, uniformly dispensing the homogeneous liquid on the surface of carbon cloth, putting the carbon cloth into a porcelain boat, putting the porcelain boat wrapped by an aluminum foil into a tubular furnace, replacing air with high-purity nitrogen, keeping the temperature at 400-600 DEG C for 0.5-5 hours under a closed condition, and performing one-step pyrolysis, vulcanization and coupling synergistic reaction to obtain the electrode material. The electrode material is used for preparing 2, 5-furandicarboxylic acid through electro-oxidation of 5-hydroxymethylfurfural and preparing hydrogen through electro-reduction of water, and has very high electro-catalytic activity.

Description

technical field [0001] The invention belongs to the field of electrocatalytic materials and technologies, and relates to a method for preparing a NiS quantum dot / S, N, O co-doped carbon network electrode material containing sulfur vacancies, in particular to a NiS quantum dot with sulfur vacancies A preparation method for a composite electrode material formed by dots evenly embedded in a S, N, O co-doped carbon network grown on a carbon cloth, and further relates to a method for the electrooxidation of 5-hydroxymethylfurfural to prepare 2, A preparation method of a bifunctional highly active electrode material for hydrogen production by electroreduction of 5-furandicarboxylic acid and water. Background technique [0002] Electrocatalytic water splitting for hydrogen production has attracted worldwide attention as an environmentally friendly hydrogen production method. However, in the water splitting reaction, due to the very slow kinetics of the oxygen evolution reaction (O...

Claims

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Application Information

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IPC IPC(8): B01J27/24B01J35/02C02F1/461C02F1/467C02F1/72C25B11/054C25B11/065C25B11/091C25B1/04C25B1/50C25B3/05C25B3/07C25B3/23C02F101/30
CPCB01J27/24C25B11/054C25B11/091C25B11/065C25B1/04C25B1/50C25B3/23C25B3/05C25B3/07C02F1/46104C02F1/4672C02F1/4676C02F2001/46142C02F2101/30C02F2101/308B01J35/40B01J35/33Y02E60/36
Inventor 王德宝孙畅鸿宋彩霞谢玉珂
Owner 乌海瑞森新能源材料有限公司
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