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Preparation method of nitrogen-rich porous carbon fiber electrode material modified by melamine resin

A technology of porous carbon fiber and melamine resin, which is applied in the chemical characteristics of fibers, the manufacture of hybrid/electric double layer capacitors, textiles and papermaking, etc., can solve the problems of high production cost and complicated production process of porous nitrogen-containing carbon electrode materials, etc. Achieve the effect of improving production efficiency, high unit specific capacitance, and reducing production costs

Active Publication Date: 2017-10-17
YANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the shortcomings of the porous nitrogen-containing carbon electrode material prepared by the existing method, such as the complex and cumbersome production process, most of the nitrogen doping and pore-making need to be carried out step by step, and the high production cost. Preparation method of high supercapacitor material

Method used

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  • Preparation method of nitrogen-rich porous carbon fiber electrode material modified by melamine resin
  • Preparation method of nitrogen-rich porous carbon fiber electrode material modified by melamine resin
  • Preparation method of nitrogen-rich porous carbon fiber electrode material modified by melamine resin

Examples

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Effect test

Embodiment 1

[0027] Add 5g of melamine into 15g of 37wt% formaldehyde solution, adjust the pH to about 9 with triethanolamine, stir in a water bath at 80°C for 40min, pour into cold methanol, precipitate out, filter, wash and dry.

[0028] Add 2g of polyacrylonitrile into 20g of N,N-dimethylformamide, dissolve it, add 0.5g of the prepared melamine resin, and dissolve to obtain a spinning solution.

[0029] The melamine resin / polyacrylonitrile composite fiber was spun by high-voltage electrospinning technology, wherein the spinning voltage was 20kV, the injection speed was 0.3mm / min, the receiving distance was 17cm, the spinning temperature was 40°C, and the humidity was 30%.

[0030] The prepared composite fibers were pre-oxidized in an air atmosphere for 2 hours, the pre-oxidation temperature was 250°C, the heating rate was 5°C / min, and the cooling rate was 5°C / min.

[0031] The pre-oxidized fibers were carbonized for 2 hours under nitrogen or argon atmosphere, the carbonization temperat...

Embodiment 2

[0036] Add 5g of melamine into 15g of 37wt% formaldehyde solution, adjust the pH to about 9 with triethanolamine, stir in a water bath at 80°C for 40min, pour into cold methanol, precipitate out, filter, wash and dry.

[0037] Add 2g of polyacrylonitrile into 18g of N,N-dimethylformamide, dissolve and add 1g of the prepared melamine resin, and dissolve to obtain a spinning solution.

[0038] The melamine resin / polyacrylonitrile composite fiber was spun by high-voltage electrospinning technology, wherein the spinning voltage was 17kV, the injection speed was 0.1mm / min, the receiving distance was 20cm, the spinning temperature was 40°C, and the humidity was 30%.

[0039] The prepared composite fibers were pre-oxidized in an air atmosphere for 2 hours, the pre-oxidation temperature was 250°C, the heating rate was 5°C / min, and the cooling rate was 5°C / min.

[0040] The pre-oxidized fibers were carbonized for 2 hours under nitrogen or argon atmosphere, the carbonization temperatur...

Embodiment 3

[0045] Add 5g of melamine into 15g of 37wt% formaldehyde solution, adjust the pH to about 9 with triethanolamine, stir in a water bath at 80°C for 40min, pour into cold methanol, precipitate out, filter, wash and dry.

[0046] Add 2 g of polyacrylonitrile into 18 g of N,N-dimethylformamide, dissolve it, add 1.5 g of the prepared melamine resin, and dissolve it to obtain a spinning solution.

[0047] The melamine resin / polyacrylonitrile composite fiber was spun by high-voltage electrospinning technology, wherein the spinning voltage was 20kV, the injection speed was 0.5mm / min, the receiving distance was 20cm, the spinning temperature was 20°C, and the humidity was 30%.

[0048] The prepared composite fibers were pre-oxidized in an air atmosphere for 2 hours, the pre-oxidation temperature was 250°C, the heating rate was 3°C / min, and the cooling rate was 3°C / min.

[0049] The pre-oxidized fibers were carbonized for 2 hours under nitrogen or argon atmosphere, the carbonization te...

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Abstract

The preparation method of the nitrogen-rich porous carbon fiber electrode material modified by melamine resin relates to the technical field of production of functional materials, using melamine and formaldehyde to synthesize melamine resin; dissolving polyacrylonitrile in N,N-dimethylformamide , then add melamine resin to prepare spinning solution; prepare MF / PAN composite fiber precursor by electrospinning; pre-oxidize and carbonize MF / PAN composite fiber to obtain nitrogen-rich carbon fiber; make NCNF into a supercapacitor The electrode solves the problems that existing carbon fiber nitrogen doping and pore making need to be distributed, the production process is cumbersome, and the cost is high.

Description

technical field [0001] The invention relates to the technical field of production of functionalized materials, in particular to a preparation process of a supercapacitor electrode material. technical background [0002] With the rapid development of the global economy and the rapid growth of the population, the energy crisis and environmental degradation are increasingly concerned by people. In this case, researchers have put their energies into the research of environmentally friendly and efficient renewable energy. At present, the main new energy storage devices include lithium-ion batteries, supercapacitors, etc. Supercapacitors have attracted extensive attention because of their advantages such as high power density, fast charging speed, long service life, and environmental friendliness. Supercapacitors are divided into electric double layer and pseudocapacitive types. The electrode materials of electric double layer capacitors are mainly carbon materials, and the ele...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F9/22D01F9/24H01G11/86
CPCY02E60/13
Inventor 贾哲华董斌赵有华贾成浩徐继任陶翠
Owner YANGZHOU UNIV
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