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Electrostatic spinning device and method for realizing carbon material nitrogen doping

A technology of electrospinning and carbon materials, applied in textiles and papermaking, filament/thread forming, fiber processing, etc., can solve the problems of performance improvement, achieve excellent structure and performance, improve related performance, and increase nitrogen content Effect

Active Publication Date: 2018-12-18
NANTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The direct pyrolysis method is a method for preparing nitrogen-doped carbon materials by pyrolyzing nitrogen-containing organic precursors. It has incomparable advantages over the first two methods and can synthesize nitrogen-doped carbon materials with controllable structures. The performance of metal-free catalysts still needs to be improved

Method used

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  • Electrostatic spinning device and method for realizing carbon material nitrogen doping
  • Electrostatic spinning device and method for realizing carbon material nitrogen doping
  • Electrostatic spinning device and method for realizing carbon material nitrogen doping

Examples

Experimental program
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Effect test

Embodiment 1

[0020] This embodiment realizes the electrospinning device of carbon material nitrogen doping, such as figure 1 As shown, it includes a micro liquid supply pump 8 and a power supply device 7, and a liquid supply device 6 communicated with the micro liquid supply pump 8 is provided above the micro liquid supply pump 8. The needle point 5 of the liquid supply device 6 and the power supply device 7 and the direct current The high-voltage positive electrode is connected, and a receiving device connected to the DC high-voltage negative electrode is placed at a distance of 10-20 cm from the needle point 5 of the liquid supply device 6 in the vertical direction. The receiving device includes a receiving gas collecting plate 10, and a heating element is installed inside the receiving gas collecting plate 10; Several exhaust holes are distributed on the upper surface of the receiving gas collecting plate 10 , and the receiving gas collecting plate 10 is fixed with a receiving foil 9 , a...

Embodiment 2

[0025] This embodiment realizes the electrospinning method of carbon material nitrogen-doped electrospinning device, such as image 3 shown, including the following steps:

[0026] (1) Add 9 g of dimethylformamide to 0.02 g of graphite oxide and disperse ultrasonically for 45 minutes to obtain a gray-black suspension.

[0027] (2) Add 0.7g of polyacrylonitrile to the suspension, place it on a magnetic stirrer and continue to stir for 2 hours while keeping the temperature at 60°C, until all of it is dissolved and turns into a black sol to obtain a spinning precursor solution.

[0028] (3) Attach the aluminum foil to the receiving device and connect the DC high-voltage negative electrode to heat the receiving gas collecting plate to 600°C, and continuously inject nitrogen gas.

[0029] (4) Place the liquid supply device 6 containing the precursor solution at the positive electrode position, keep the distance from the receiving gas collecting plate 10 at 17cm, the voltage is 18k...

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Abstract

The invention relates to an electrostatic spinning device and method for realizing carbon material nitrogen doping. The electrostatic spinning device comprises a miniature liquid supply pump and a power supply device. A liquid supply device communicated with the miniature liquid supply pump is arranged on the upper side of the miniature liquid supply pump. A needle point of the liquid supply device is connected with the power supply device and a DC high-voltage electrode. A receiving device connected with the DC high-voltage electrode is placed at the position 10-20 cm away from the needle point of the liquid supply device in the vertical direction. The receiving device comprises a receiving gas collecting plate. A heating element is arranged in the receiving gas collecting plate. A plurality of gas discharge holes are distributed in the upper surface of the receiving gas collecting plate. Receiving foil is fixed to the receiving gas collecting plate. The receiving gas collecting plateis communicated with a gas storage tank through a gas valve. The electrostatic spinning device has the advantages that the film-shaped controllable preparation of a carbon material can be achieved, aprepared fiber film has an excellent hole structure, the nitrogen doping of the carbon material is synchronously achieved, and the nitrogen content in the carbon material is improved.

Description

technical field [0001] The invention belongs to the technical field of electrospinning, and in particular relates to an electrospinning device and an electrospinning method for realizing carbon material nitrogen doping. Background technique [0002] There are three main methods for the synthesis of nitrogen-doped carbon materials. The first is pre-doping or in-situ doping, which is to simultaneously dope nitrogen atoms when the graphite structure is formed, such as vapor deposition. This method can obtain higher Nitrogen content, but it cannot be mass-produced; the second is post-doping, which is to incorporate nitrogen atoms through oxidation, pyrolysis, substitution and other post-processing of carbon materials (graphene, carbon nanotubes, carbon black, etc.). Because the graphite layer of these carbon materials has already been formed, nitrogen atoms cannot enter, so generally the nitrogen content of the nitrogen-doped carbon materials prepared in this way is not high; th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/00D04H1/728
CPCD01D5/0061D01D5/0076D04H1/728
Inventor 倪红军朱杨杨朱昱汪兴兴李志扬黄明宇廖萍吕帅帅沈威钢
Owner NANTONG UNIVERSITY
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