Carbon nano fiber aerogel electrostatic spinning construction method

A carbon nanofiber and nanofiber technology, which is applied in the field of electrospinning construction of carbon nanofiber aerogels, can solve the problems of difficult and uniform dispersion of fiber membranes, time-consuming, easy to break, etc. effect of continuity

Inactive Publication Date: 2015-06-03
INST OF URBAN ENVIRONMENT CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

This is not only time-consuming, but also the fiber film is difficult to disperse evenly, and it is easy to break during dispersion

Method used

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  • Carbon nano fiber aerogel electrostatic spinning construction method
  • Carbon nano fiber aerogel electrostatic spinning construction method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] 1) Preparation of spinning solution: Weigh 2 g of polyacrylonitrile (PAN) powder and 0.3 g of graphene oxide (GO) into a 100 mL conical flask containing 20 g of dimethylformamide (DMF) solvent placed in a water bath at 60 °C, heated and stirred until dissolved, and configured as a PAN-GO mixed solution.

[0021] 2) Preparation of nanofibers: The electrospinning solution in step 1) was placed in a 10 ml syringe, and the nanofibers were collected in a plastic container filled with water as a nanofiber receiver. Spinning parameters are: voltage 15 kV, spinneret inner diameter 0.6 mm, spinning liquid flow rate 0.9 mL / h, distance from spinneret to receiving water surface 15 cm, receiving time 3 h, environmental conditions: temperature 30±5 ℃ , the relative humidity is 50±5%, and the receiver moves back and forth at a speed of 0.5 cm / s.

[0022] 3) Preparation of nanofiber airgel: shape the nanofiber solution collected in step 2 according to the required density and shape, a...

Embodiment 2

[0026] 1) Preparation of spinning solution: weigh 2 g of polyacrylonitrile (PAN) powder and 0.1 g of ferric chloride (FeCl 3 ), added to a 100 mL Erlenmeyer flask containing 20 g of dimethylformamide (DMF) solvent, heated and stirred in a water bath at 60°C until dissolved, and configured as PAN-FeCl 3 mixture.

[0027] 2) Preparation of nanofibers: The electrospinning solution in step 1) was placed in a 10 ml syringe, and the nanofibers were collected in a plastic container filled with water as a nanofiber receiver. Spinning parameters are: voltage 15 kV, spinneret inner diameter 0.6 mm, spinning liquid flow rate 0.9 mL / h, distance from spinneret to receiving water surface 15 cm, receiving time 3 h, environmental conditions: temperature 30±5 ℃ , the relative humidity is 50±5%, and the receiver moves back and forth at a speed of 0.5 cm / s.

[0028] 3) Preparation of nanofiber airgel: shape the nanofiber solution collected in step 2 according to the required density and shape,...

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Abstract

The invention provides a carbon nano fiber aerogel electrostatic spinning construction method, and belongs to the technical field of nano materials. The carbon nano fiber aerogel electrostatic spinning construction method particularly comprises the following steps: (a) preparing an electrostatic spinning solution; (b) selecting a proper solvent and directly receiving electrostatic spinning nano fibers so as to obtain a nano fiber solution; (c) sizing the nano fiber solution, refrigerating, putting into a freeze dryer and drying so as to obtain nano fiber aerogel; and (d) pre-oxidizing, carbonizing and activating so as to obtain the carbon nano fiber aerogel. The carbon nano fiber aerogel electrostatic spinning construction method not only is simple and feasible, is good in repeatability, but also the prepared carbon nano fiber aerogel is easy to control in formation and structure; the composite carbon nano fiber aerogel with diversified structures can be constructed so as to meet different requirements in practical application.

Description

technical field [0001] The invention relates to the technical field of nanomaterials, in particular to an electrospinning construction method of carbon nanofiber airgel. Background technique [0002] Carbon airgel is a new lightweight nanoporous material first discovered by Pekblb in the United States. Its basic characteristics are high porosity, large specific surface area and wide range of density changes. It has special properties in electrical, thermal and optical aspects, and has a wide range of applications. application prospects. For example, it can be used as supercapacitor, catalyst carrier, hydrogen storage material, electrode material, absorbent and gas detector, etc. Among them, light weight and doped carbon aerogels have great application prospects. For example, ultralight nitrogen-doped graphene structures are used as absorbers and supercapacitor electrodes, exhibiting extremely large absorption capacity and special capacitance. Carbon aerogels doped with me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F9/22D01F9/26D01F9/21D01F9/24
Inventor 钟鹭斌郑煜铭杨跃伞
Owner INST OF URBAN ENVIRONMENT CHINESE ACAD OF SCI
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