Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for rapid preparation of nitrogen-doped carbon nanotube foam and application of foam

A technology of nitrogen-doped carbon and single-walled carbon nanotubes, applied in chemical instruments and methods, carbon compounds, inorganic chemistry, etc., to achieve ultra-light weight, good cycle stability, and good mechanical properties

Pending Publication Date: 2018-06-15
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
View PDF3 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the method of preparing carbon nanotube foam by combustion method has not been reported yet.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for rapid preparation of nitrogen-doped carbon nanotube foam and application of foam
  • Method for rapid preparation of nitrogen-doped carbon nanotube foam and application of foam
  • Method for rapid preparation of nitrogen-doped carbon nanotube foam and application of foam

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1) Preparation steps of acidified single-walled carbon nanotube dispersion: adding single-walled carbon nanotubes to H 2 SO 4 (95.0-98.0%) and HNO 3 (65.0-68.0%) in a mixed solution with a volume ratio of 3:1, reflux and stir at 70°C for 2h, filter with suction, take the filter residue and wash it with distilled water until the eluate is neutral, then disperse the filter residue in distilled water to obtain Concentration is the acidified single-walled carbon nanotube dispersion liquid of 2mg / mL;

[0036] (2) Cut polyurethane sponge (polyethylene sponge can also be used in specific operations) into 1×1×1cm 3cubes (in the specific implementation process, the sponge can be cut into the required size and shape according to the requirements), after being ultrasonically washed with ethanol and distilled water and dried, then immersed in the acidified single-walled carbon nanometers obtained in step (1). tube dispersion solution (the dispersion solution completely submerge...

Embodiment 2

[0042] (1) Preparation steps of acidified single-walled carbon nanotube dispersion: adding single-walled carbon nanotubes to H 2 SO 4 (95.0-98.0%) and HNO 3 (65.0-68.0%) in a mixed solution with a volume ratio of 3:1, reflux and stir at 70°C for 2h, filter with suction, take the filter residue and wash it with distilled water until the eluate is neutral, then disperse the filter residue in distilled water to obtain Concentration is the acidified single-walled carbon nanotube dispersion liquid of 2mg / mL;

[0043] (2) Cut polyurethane sponge (polyethylene sponge can also be used in specific operations) into 1×1×1cm 3 cubes (in the specific implementation process, the sponge can be cut into the required size and shape according to the requirements), after being ultrasonically washed with ethanol and distilled water and dried, then immersed in the acidified single-walled carbon nanometers obtained in step (1). tube dispersion liquid (the dispersion liquid is completely submerge...

Embodiment 3

[0047] (1) Preparation steps of acidified single-walled carbon nanotube dispersion: adding single-walled carbon nanotubes to H 2 SO 4 (95.0-98.0%) and HNO 3 (65.0-68.0%) in a mixed solution with a volume ratio of 3:1, reflux and stir at 70°C for 2h, filter with suction, take the filter residue and wash it with distilled water until the eluate is neutral, then disperse the filter residue in distilled water to obtain Concentration is the acidified single-walled carbon nanotube dispersion liquid of 2mg / mL;

[0048] (2) Cut polyurethane sponge (polyethylene sponge can also be used in specific operations) into 1×1×1cm 3 cubes (in the specific implementation process, the sponge can be cut into the required size and shape according to the requirements), after being ultrasonically washed with ethanol and distilled water and dried, then immersed in the acidified single-walled carbon nanometers obtained in step (1). Tube dispersion liquid (dispersion liquid completely submerged spong...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Densityaaaaaaaaaa
Current densityaaaaaaaaaa
Densityaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method for rapid preparation of a nitrogen-doped carbon nanotube foam material and an application of the material. The preparation method comprises the followingsteps: a) adding single-wall carbon nanotubes into a mixed solution of H2SO4 and HNO3, washing and dispersing after refluxing for 2 h at the temperature of 70 DEG C, and preparing an acidified single-wall carbon nanotube dispersing solution with the concentration of 2 mg / mL; b), successively carrying out ultrasonic washing of polyurethane sponge with ethanol and distilled water and drying, then transferring into the acidified single-wall carbon nanotube dispersing solution obtained in the step a, infiltrating and drying, then infiltrating in the acidified carbon nanotube dispersing solution again and drying, and repeating the steps for 1-5 times, to obtain a sponge complex; and c) placing the dried sponge complex in flame, treating for 15-20 s, and thus obtaining the nitrogen-doped carbonnanotube foam. The preparation method only needs 20 s, and the obtained nitrogen-doped carbon nanotube foam material is light in weight and low in density, can be applied to preparation of an electrochemical energy storage material, has good circulatory stability, and is suitable for large-scale production and application.

Description

technical field [0001] The present application relates to the technical field of preparation of three-dimensional carbon nanotube bulk materials, in particular to a method and application for rapid preparation of nitrogen-doped carbon nanotube foam. Background technique [0002] Carbon nanotubes have good electrical conductivity and mechanical properties, so more and more people pay attention to them. And different from powder materials, carbon nanotube-based macroscopic materials have self-supporting and compressible properties, so they have become a hot spot of research and attention. research over the past few decades. Due to its low density, high electrical conductivity and excellent mechanical properties, three-dimensional carbon nanotube foam provides a fast channel for the transport of electrons and ions, so it can be widely used as an electrode support for batteries and sensor electrode materials. In addition, the material also has excellent adsorption, filtration ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C01B32/168
Inventor 佟浩卢亮张校刚岳世鸿金凤巧孟晴
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS