Preparation method of graphene oxide-clad spiral carbon pipe three-dimensional composite materials and photochemical reduction nitrogen doping

A technology of ene-coated helix and composite materials, which is applied in the field of performance improvement of graphene materials to achieve high electrical conductivity, improved performance, and easy design

Active Publication Date: 2018-10-26
GUILIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

So far, most reports on helical carbon tubes have focused on mechanics, electricity, magnetism, microwave absorption, etc., however, there are few reports on energy storage devices based on helical carbon tubes.

Method used

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  • Preparation method of graphene oxide-clad spiral carbon pipe three-dimensional composite materials and photochemical reduction nitrogen doping
  • Preparation method of graphene oxide-clad spiral carbon pipe three-dimensional composite materials and photochemical reduction nitrogen doping
  • Preparation method of graphene oxide-clad spiral carbon pipe three-dimensional composite materials and photochemical reduction nitrogen doping

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] (1) Mix 8g of flake graphite with 8g of sodium nitrate, add 384mL of concentrated sulfuric acid with a mass percentage concentration of 96.5% and soak for one day. The soaking process makes the sulfuric acid fully contact with the graphite, and the graphite will be more easily oxidized.

[0037] (2) Slowly add 48g potassium permanganate to the mixture obtained in step (1), note that the whole system is put into a low temperature constant temperature reaction bath, keep the temperature below zero degrees Celsius, and magnetically stir for 1.5 hours; the color of the reactant is changed from black After turning dark green, adjust the reaction temperature to 35°C and react for 2 hours. During this process, pay attention to temperature control so that the graphite is fully oxidized; then add 320mL water to the reactant dropwise with a dropping funnel, and stir for 15 minutes; continue Add 800mL of water and 40mL of 29.5% hydrogen peroxide solution by mass, and stir for 10 mi...

Embodiment 2

[0062] (1) Mix 8g of flake graphite with 8g of sodium nitrate, add 384mL of concentrated sulfuric acid with a mass percentage concentration of 96.5% and soak for one day. The soaking process makes the sulfuric acid fully contact with the graphite, and the graphite will be more easily oxidized.

[0063] (2) Slowly add 48g potassium permanganate to the mixture obtained in step (1), note that the whole system is put into a low temperature constant temperature reaction bath, keep the temperature below zero degrees Celsius, and magnetically stir for 1.5 hours; the color of the reactant is changed from black After turning dark green, adjust the reaction temperature to 35°C and react for 2 hours. During this process, pay attention to temperature control so that the graphite is fully oxidized; then add 320mL water to the reactant dropwise with a dropping funnel, and stir for 15 minutes; continue Add 800mL of water and 40mL of 29.5% hydrogen peroxide solution by mass, and stir for 10 mi...

Embodiment 3

[0081] (1) Mix 8g of flake graphite with 8g of sodium nitrate, add 384mL of concentrated sulfuric acid with a mass percentage concentration of 96.5% and soak for one day. The soaking process makes the sulfuric acid fully contact with the graphite, and the graphite will be more easily oxidized.

[0082] (2) Slowly add 48g potassium permanganate to the mixture obtained in step (1), note that the whole system is put into a low temperature constant temperature reaction bath, keep the temperature below zero degrees Celsius, and magnetically stir for 1.5 hours; the color of the reactant is changed from black After turning dark green, adjust the reaction temperature to 35°C and react for 2 hours. During this process, pay attention to temperature control so that the graphite is fully oxidized; then add 320mL water to the reactant dropwise with a dropping funnel, and stir for 15 minutes; continue Add 800mL of water and 40mL of 29.5% hydrogen peroxide solution by mass, and stir for 10 mi...

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Abstract

The invention discloses a preparation method of graphene oxide-clad spiral carbon pipe three-dimensional composite materials and photochemical reduction nitrogen doping. The method comprises steps oftaking graphene oxide prepared through chemical oxidation and spiral carbon pipes prepared through combustion chemical vapor deposition method as raw materials; mixing the graphene oxide and the spiral carbon pipes and coating foamed nickel with the mixer through a knife, thereby achieving high nitrogen doped graphene method through illumination; and carrying out illumination on the foamed nickelcoated with the mixer of the graphene oxide and the spiral carbon pipes through knife under the atmosphere of ammonia gas by use of laser with 100-120 mJ/cm<2> energy or a mercury lamp in a selectableregion position, wherein the illumination time is 1-30 minutes so as to obtain the high nitrogen-doped photo-reduction graphene oxide and the spiral carbon pipe three-dimensional composite materials.According to the invention, the operation is convenient; the cost is low; the large-scale preparation is achieved; through the special cross linking function of the illumination time, the intensity and the mixed spiral carbon pipes, modulation and control of the nitrogen doping contents and conductivity of graphene and machinery performance are achieved.

Description

technical field [0001] The invention relates to a preparation method of a helical carbon nanotube (HCNTs) / reduced graphene oxide (rGO) solution and a photochemical method to realize simultaneous reduction of helical carbon nanotubes / reduced graphene oxide (nitrogen-doped helical carbon nanotubes / reduced graphene oxide) It is carried out simultaneously with high nitrogen doping, and belongs to the technical field of graphene material performance improvement. Background technique [0002] Graphene is microscopically composed of carbon atoms sp 2 The hybrid orbital forms a two-dimensional carbon nanomaterial with a hexagonal honeycomb lattice, and macroscopically it is a two-dimensional crystal composed of carbon atoms with only one layer of thickness. Graphene has excellent optical and mechanical properties and is considered to be a revolutionary material in the future. In the field of electrochemistry, graphene is an important electrode material. The most important thing i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/24H01G11/36H01G11/38H01G11/30H01G11/86
CPCH01G11/24H01G11/30H01G11/36H01G11/38H01G11/86Y02E60/13
Inventor 李新宇罗涨宾徐丹丹许永杰文剑锋
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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