Cobalt diselenide/nitrogen-doped carbon nanomaterial composite electrode catalytic material, preparation method and application thereof

A technology of nitrogen-doped carbon and nanomaterials, applied in chemical instruments and methods, physical/chemical process catalysts, battery electrodes, etc., can solve the problems of high price and low catalytic activity, achieve increased specific surface area, good application prospects, Favorable effect of electrocatalytic reaction

Active Publication Date: 2020-02-14
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to overcome the problems of high price and low catalytic activity of the electrode catalytic material of the existing zinc-air battery, the present invention provides a preparation method of the cobalt diselenide / nitrogen-doped carbon nanomaterial composite electrode catalytic material, and the method has mild conditions , simple operation, controllable structure, uniform distribution of components, and can be mass-produced or industrialized

Method used

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  • Cobalt diselenide/nitrogen-doped carbon nanomaterial composite electrode catalytic material, preparation method and application thereof
  • Cobalt diselenide/nitrogen-doped carbon nanomaterial composite electrode catalytic material, preparation method and application thereof
  • Cobalt diselenide/nitrogen-doped carbon nanomaterial composite electrode catalytic material, preparation method and application thereof

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Embodiment 1

[0038] (1) Soak the carbon cloth in acetone (99.5%), 10% hydrochloric acid, and ethanol (99.7%) in sequence, rinse it with deionized water until neutral, dry it in vacuum at 60°C for 24 hours, and undergo plasma hydrophilization treatment to obtain The hydrophilized carbon cloth is ready for use; at room temperature, add 40mL aqueous solution containing 1.3g dimethylimidazole to 40mL aqueous solution containing 0.5821g cobalt nitrate hexahydrate, mix well under magnetic stirring, add the above carbon cloth at room temperature Under the reaction 4h. After the reaction, rinse 3 times with deionized water. After the obtained product was vacuum-dried at 60°C for 24 hours, Co-MOF was grown in situ on the carbon cloth;

[0039] (2) Grow nitrogen-doped carbon nanotubes / nitrogen-doped carbon nanosheets on the carbon cloth treated in step (1) by CVD, first pass nitrogen gas, and then heat up to 500 degrees Celsius at a rate of 3°C / min, then pass hydrogen gas, Ethanol, calcined for 10...

Embodiment 2

[0045] (1) After soaking the carbon cloth in acetone (99.5%), 10% hydrochloric acid, and ethanol (99.7%) in sequence, rinse it with deionized water until it becomes neutral, dry it in vacuum at 60°C for 24 hours, and make it hydrophilized by plasma for later use. At room temperature, add 40mL aqueous solution containing 1.3g dimethylimidazole to 40mL aqueous solution containing 0.5821g cobalt nitrate hexahydrate, mix well under magnetic stirring, add the above carbon cloth and react at room temperature for 4h. After the reaction, rinse 3 times with deionized water. After the obtained product was vacuum-dried at 60°C for 24 hours, Co-MOF was grown in situ on the carbon cloth;

[0046] (2) Grow nitrogen-doped carbon nanotubes / nitrogen-doped carbon nanosheets on the carbon cloth treated in step (1) by CVD: first pass nitrogen gas, heat up to 500 degrees Celsius at a rate of 3°C / min, then pass hydrogen gas, Ethanol, calcined for 30 minutes, passed nitrogen, kept at 500 degrees fo...

Embodiment 3

[0050] (1) After soaking the carbon cloth in acetone (99.5%), 10% hydrochloric acid, and ethanol (99.7%) in sequence, rinse it with deionized water until it becomes neutral, dry it in vacuum at 60°C for 24 hours, and make it hydrophilized by plasma for later use. At room temperature, add 40mL aqueous solution containing 1.3g dimethylimidazole to 40mL aqueous solution containing 0.5821g cobalt nitrate hexahydrate, mix well under magnetic stirring, add the above carbon cloth and react at room temperature for 4h. After the reaction, rinse 3 times with deionized water. After the obtained product was vacuum-dried at 60°C for 24 hours, Co-MOF was finally grown in situ on carbon cloth;

[0051] (2) Grow nitrogen-doped carbon nanotubes / nitrogen-doped carbon nanosheets on the carbon cloth treated in step (1) by CVD, first pass nitrogen gas, and then heat up to 500 degrees Celsius at a rate of 3°C / min, then pass hydrogen gas, Ethanol, calcined for 10 minutes, passed nitrogen, kept at 5...

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Abstract

Relating to the technical field of composite materials, in order to solve the problems of high price and low catalytic activity of electrode catalytic materials in existing zinc-air batteries, the invention provides a cobalt diselenide / nitrogen-doped carbon nanomaterial composite electrode catalytic material, a preparation method and application thereof. The preparation method includes the steps of: (1) growing Co-MOF on carbon cloth subjected to hydrophilization treatment; (2) growing a nitrogen-doped carbon nanomaterial through CVD process to obtain a Co / nitrogen-doped carbon nanomaterial; wherein the nitrogen-doped carbon nanomaterial is a combination of nitrogen-doped carbon nanotube and nitrogen-doped carbon nanosheet; and (3) carrying out selenylation treatment to obtain the cobalt diselenide / nitrogen-doped carbon nanomaterial composite electrode catalytic material. The composite material provided by the invention retains the structural integrity of the cobalt diselenide porous frame / carbon nanosheet array obtained by taking the triangular lamellar MOF crystal as a template, has excellent properties of both the carbon nanotube and the cobalt diselenide porous frame, and has wide application prospects in the fields of adsorption, sensing, energy storage, catalysis and the like.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to a cobalt diselenide / nitrogen-doped carbon nanomaterial composite electrode catalyst material and its preparation method and application. Background technique [0002] Nowadays, due to the continuous growth of economy and population, the sharp increase of global energy consumption and demand, in order to reduce the gradual depletion of fossil fuels and the accompanying climate problems, the development and utilization of new energy sources is imminent. Among them, as a new type of energy conversion device, zinc-air battery has attracted extensive attention due to its advantages of high energy density, environmental friendliness, long service life, high energy conversion efficiency, and low price. [0003] Among them, the electrode catalytic material of the zinc-air battery is the key factor determining the performance and cost of the battery. Currently, the most commo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24B01J35/10H01M4/90H01M12/06
CPCB01J27/24B01J35/0033B01J35/10H01M4/90H01M4/9083H01M12/06Y02E60/10
Inventor 曹澥宏张琳刘文贤施文慧
Owner ZHEJIANG UNIV OF TECH
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