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Preparation method of polypyrrole/graphene sheet/nickel oxide nano composite conductive material

A graphene flake and nanocomposite technology, which is applied in the field of composite materials, can solve the problems of polypyrrole, such as brittle texture, infusibility, insolubility, and non-processability, so as to improve the electrical conductivity and solve the effect of agglomeration

Inactive Publication Date: 2013-04-03
NORTHWEST UNIVERSITY FOR NATIONALITIES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Normally, polypyrrole is brittle, infusible and insoluble, and cannot be processed

Method used

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  • Preparation method of polypyrrole/graphene sheet/nickel oxide nano composite conductive material
  • Preparation method of polypyrrole/graphene sheet/nickel oxide nano composite conductive material
  • Preparation method of polypyrrole/graphene sheet/nickel oxide nano composite conductive material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] ① Preparation of graphene flakes (GNS): Weigh 1 g of 200-mesh expandable graphite, place it in a muffle furnace, and expand it at a temperature of 950-1050°C for 10-15 seconds to obtain expanded graphite. Then use o-dichlorobenzene as a solvent, ultrasonically peel the expanded graphite for 3~4 hours, filter, wash, and dry to obtain GNS.

[0032] ②Preparation of nano-NiO: Add 50mL 0.2mol / L NiSO in a three-necked flask 4 ·6H 2 O, heat up to 70~80°C under ultrasonic conditions; adjust the pH value to about 10~12 with 0.4mol / L KOH solution, continue the ultrasonic reaction for 3~5h; cool for 6~12h, centrifuge, and wash repeatedly with distilled water until there is no SO 4 2- (with BaCl 2 inspection), finally washed with absolute ethanol, dried for 24 hours, ground, and then calcined at 350°C for 1~2 hours to obtain NiO with a particle size of 1~3nm.

[0033] ③Preparation of PPy / GNS / NiO: Take 0.015g GNS, 0.05 g NiO, 0.5g pyrrole monomer and 1 ml polyethylene glycol-400...

Embodiment 2

[0036] The preparation of nano-GNS and nano-NiO is the same as in Example 1.

[0037] ③Preparation of PPy / GNS / NiO: Take 0.016g GNS, 0.1 g NiO, 0.5g pyrrole monomer and 1 ml polyethylene glycol-400 in the reactor, add 6~10mL absolute ethanol, and ultrasonically disperse it evenly; Under ice bath conditions, add 0.4g p-toluenesulfonic acid, continue ultrasonic dispersion for 5min; add 50mL 0.34mol / L FeCl 3 solution, ultrasonically reacted for 2 to 4 hours, stood overnight, filtered with suction, washed until the filtrate was colorless, and dried to obtain a PPy / GNS / NiO conductive composite material.

[0038] The conductivity of the PPy / GNS / NiO conductive composite is 14.49 S / cm.

Embodiment 3

[0040] The preparation of nano-GNS and nano-NiO is the same as in Example 1.

[0041] Preparation of PPy / GNS / NiO: Take 0.028g GNS, 0.5g NiO, 0.5g pyrrole monomer and 1ml polyethylene glycol-400 in a reactor, add 6~10mL absolute ethanol, and ultrasonically disperse it evenly; Under the condition of ice bath, add 0.4g p-toluenesulfonic acid, ultrasonically disperse for 8min; add 50mL 0.34mol / L FeCl 3 solution, ultrasonically reacted for 2 to 4 hours, stood overnight, filtered with suction, washed until the filtrate was colorless, and dried to obtain a PPy / GNS / NiO conductive composite material.

[0042] The conductivity of the PPy / GNS / NiO conductive composite is 24.39 S / cm.

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Abstract

The invention provides a polypyrrole / graphene sheet / nickel oxide nano composite conductive material and a preparation method thereof, belonging to the technical field of composite materials. By using alcohol as a medium, polyethylene glycol-400 as a dispersing agent, p-toluenesulfonic acid as a doping agent, and FeCl3 as an initiating agent, a graphene sheet, nano nickel oxide and polypyrrole monomers are polymerized under the ultrasonic condition to ensure that the polypyrrole and the nickel oxide nano particles are uniformly dispersed on the surface of a GNS (Graphene Nano Sheet) and the GNS is completely wrapped, thus the problem of agglomeration during polypyrrole agglomeration is solved, and the conduction property of the polypyrrole is effectively improved.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and relates to the preparation of a polypyrrole-based nanocomposite conductive material, in particular to a polypyrrole (PPy) as the main body, and graphene nanosheets (GNS) and nickel oxide (NiO) as fillers The preparation method of the three-phase composite conductive material. Background technique [0002] Polypyrrole (PPy), a conductive polymer material containing conjugated double bonds, has higher conductivity and thermal stability than other conductive polymer materials, and is easy to synthesize. It is widely used in the production of biosensors and functional molecules. membranes, secondary batteries and nonlinear optical devices, etc. Normally, polypyrrole is brittle, infusible and insoluble, and cannot be processed. In order to improve the processing performance of polypyrrole and improve the conductivity of polypyrrole, polypyrrole / inorganic layer composite conductive ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/06C08K3/04C08K3/22C08L79/04
Inventor 孙万虹孟淑娟臧荣鑫李海玲林华典
Owner NORTHWEST UNIVERSITY FOR NATIONALITIES
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