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Preparation of multifunctional graphene-based material and application of multifunctional graphene-based material in supercapacitor and water treatment

A graphene-based, ultrasonic technology, used in graphene, water/sewage treatment, hybrid capacitor electrodes, etc., can solve problems such as general electrochemical performance, achieve excellent performance, prevent agglomeration, and enhance the effect of enrichment.

Inactive Publication Date: 2018-07-03
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the electrochemical properties of these titanium dioxide / graphene composite aerogels are mediocre, which limits their application.

Method used

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  • Preparation of multifunctional graphene-based material and application of multifunctional graphene-based material in supercapacitor and water treatment
  • Preparation of multifunctional graphene-based material and application of multifunctional graphene-based material in supercapacitor and water treatment
  • Preparation of multifunctional graphene-based material and application of multifunctional graphene-based material in supercapacitor and water treatment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Sonicate 200 mg graphene oxide in 100 ml ultrapure water with an ultrasonic cell disruptor for 10 h to obtain a uniformly dispersed graphene oxide solution for use;

[0031] (2) Distill the pyrrole monomer solution under reduced pressure, vacuumize the combined device, wrap the whole device with tin foil to prevent the re-oxidation of the distilled pyrrole, and distill it in a hot water bath at 100°C under nitrogen to obtain fresh pyrrole Single stand-by;

[0032] (3) Add an appropriate amount of FeCl 3 ·6H 2 O was added to 10 ml deionized and ultrasonically dispersed into FeCl 3 ·6H 2 O is completely dissolved for use;

[0033] (4) Take 25 ml of polytetrafluoroethylene lining, add 5 ml of graphene oxide dispersion, and then add 0.5 ml of fresh pyrrole monomer, sonicate the mixed solution for 10 min in an ultrasonic cell disruptor to mix the two solutions evenly ready for use;

[0034] (5) Put the lining into the ultrasonic cleaner, and then put the FeCl 3 ·6...

Embodiment approach 2

[0039] (1) Sonicate 200 mg graphene oxide in 100 ml ultrapure water with an ultrasonic cell disruptor for 10 h to obtain a uniformly dispersed graphene oxide solution for use;

[0040] (2) Distill the pyrrole monomer solution under reduced pressure, vacuumize the combined device, wrap the whole device with tin foil to prevent the re-oxidation of the distilled pyrrole, and distill it in a hot water bath at 100°C under nitrogen to obtain fresh pyrrole Single stand-by;

[0041] (3) Add an appropriate amount of FeCl 3 ·6H 2 O was added to 10 ml deionized and ultrasonically dispersed into FeCl 3 ·6H 2 O is completely dissolved for use;

[0042] (4) Take 25 ml of polytetrafluoroethylene lining, add 5 ml of graphene oxide dispersion, and then add 0.5 ml of fresh pyrrole monomer, sonicate the mixed solution for 10 min in an ultrasonic cell disruptor to mix the two solutions evenly ready for use;

[0043] (5) Put the lining into the ultrasonic cleaner, and then put the FeCl 3 ·6...

Embodiment approach 3

[0048] (1) Sonicate 200 mg graphene oxide in 100 ml ultrapure water with an ultrasonic cell disruptor for 10 h to obtain a uniformly dispersed graphene oxide solution for use;

[0049] (2) Distill the pyrrole monomer solution under reduced pressure, vacuumize the combined device, wrap the whole device with tin foil to prevent the re-oxidation of the distilled pyrrole, and distill it in a hot water bath at 100°C under nitrogen to obtain fresh pyrrole Single stand-by;

[0050] (3) Add an appropriate amount of FeCl 3 ·6H 2 O was added to 10 ml deionized and ultrasonically dispersed into FeCl 3 ·6H 2 O is completely dissolved for use;

[0051] (4) Take 25 ml of polytetrafluoroethylene lining, add 5 ml of graphene oxide dispersion, and then add 0.5 ml of fresh pyrrole monomer, sonicate the mixed solution for 10 min in an ultrasonic cell disruptor to mix the two solutions evenly ready for use;

[0052] (5) Put the lining into the ultrasonic cleaner, and then put the FeCl 3 ·6...

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Abstract

The invention discloses the preparation of a multifunctional graphene-based material and the application of the multifunctional graphene-based material in a supercapacitor and water treatment. A graphene and a pyrrole monomer are combined by using a hydrothermal method to obtain a polypyrrole / reduced graphene oxide aerogel (PGAs). The aerogel has the porosity of graphene and the reducibility of polypyrrole. The disadvantage of excessive agglomeration of pyrrole can be solved well by the porosity and dispersibility of the graphene, and thus the advantages are fully exerted. A prepared graphene-based aerogel is placed into a three-dimensional electrode reaction system to play a role of as a third particle electrode and is used for removing a mixed solution of hexavalent chromium (Cr(VI)) andbisphenol A (BPA). In addition, the prepared material is used as an electrode and is applied to the supercapacitor, and the related performance is tested. The realization of a multifunctional material facilitates the alleviation of environmental pressure and accords with the current trend of energy conservation and environmental protection.

Description

technical field [0001] The invention relates to the preparation of a multifunctional graphene-based material and its application in supercapacitors and water treatment, belonging to the field of water treatment and electrochemical technology. Background technique [0002] In recent years, supercapacitors have attracted a lot of attention due to their advantages of higher energy density than conventional capacitors and higher power density than secondary batteries, as well as long cycle life, superior low temperature performance, high stability and low environmental pollution. focus on. Supercapacitors have a wide range of application prospects, such as portable instruments and equipment, data memory storage systems, electric vehicle power supplies and emergency backup power supplies, etc. Especially in electric vehicles, supercapacitors and batteries are combined to provide high power and high energy respectively. The volume of the power supply is small, and the life of the...

Claims

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Application Information

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IPC IPC(8): H01G11/24H01G11/36H01G11/48B01J31/06C01B32/184C08L79/04C08K3/04C08J3/075C02F1/42C02F1/467C02F1/469C02F1/72C02F101/20
CPCH01G11/24H01G11/36H01G11/48C02F1/42C02F1/4672C02F1/469C02F1/725C08J3/075B01J31/06C02F2101/20C08J2379/04B01J35/23B01J35/33Y02E60/13Y02P20/10
Inventor 张一梅张丹丹武盼盼赖毓娴
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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