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Method for preparing powder oxygen-containing graphene and powder of oxygen-containing grapheme/tetrapolyaniline

A technology of graphene powder and graphene, applied in the field of preparation of supercapacitor electrode materials, can solve the problem of low capacitance

Inactive Publication Date: 2012-03-28
INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims at the low specific capacitance of the graphene supercapacitor electrode material prepared by the existing preparation method, and proposes a new method for preparing oxygen-containing graphene and oxygen-containing graphene / tetraaniline composite material with high specific capacitance

Method used

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  • Method for preparing powder oxygen-containing graphene and powder of oxygen-containing grapheme/tetrapolyaniline
  • Method for preparing powder oxygen-containing graphene and powder of oxygen-containing grapheme/tetrapolyaniline
  • Method for preparing powder oxygen-containing graphene and powder of oxygen-containing grapheme/tetrapolyaniline

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Preparation of Tetraaniline: Add 80 gram of sodium chloride and 0.8 gram of N-phenyl-1,4-phenylenediamine to 400 milliliters of 1 mole per liter of hydrochloric acid, add 12 milliliters of hydrogen peroxide (mass fraction 30% ) After the reaction, tetrapolyaniline powder is obtained.

[0017] Add 0.1 gram of graphite oxide into 100 milliliters of water, and ultrasonically disperse it for 2 hours to form a graphene oxide colloid whose mass concentration is 1 mg / ml uniformly dispersed in a monolithic layer; 3 milliliters of hydrobromic acid is added to the resulting graphene oxide colloid, Pour into a three-neck round-bottomed flask equipped with a condenser tube, an electric stirrer and a glass stopper, boil and reflux at an oil bath temperature of 110° C. and stir for 24 hours to obtain a black oxygen-containing graphene colloid. Filter the obtained black oxygen-containing graphene colloid, wash with ethanol and water, and dry to obtain the oxygen-containing graphene po...

Embodiment 2

[0021] Add 0.1 gram of graphite oxide into 200 milliliters of water, and ultrasonically disperse for 2 hours to form a uniformly dispersed graphene oxide colloid with a mass concentration of 0.5 mg / ml; add 3 milliliters of hydrobromic acid to the resulting graphene oxide colloid , poured into a three-neck round-bottomed flask equipped with a condenser, an electric stirrer and a glass stopper, boiled and refluxed at an oil bath temperature of 110°C and stirred for 24 hours to obtain a black oxygen-containing graphene colloid. Filter the obtained black oxygen-containing graphene colloid, wash with ethanol and water, and dry to obtain the oxygen-containing graphene powder;

[0022] Add 0.1 gram of graphite oxide into 200 milliliters of water, and ultrasonically disperse for 2 hours to form a graphene oxide colloid with a mass concentration of 0.5 mg / ml uniformly dispersed in a single layer; dissolve 0.1 gram of tetraaniline in 100 milliliters of N, N- Methylformamide, made into t...

Embodiment 3

[0024] Add 0.1 gram of graphite oxide into 150 milliliters of water, and ultrasonically disperse for 2 hours to form a uniformly dispersed graphene oxide colloid with a mass concentration of 0.67 mg / ml; add 3 milliliters of hydrobromic acid to the resulting graphene oxide colloid , poured into a three-neck round-bottomed flask equipped with a condenser, an electric stirrer and a glass stopper, boiled and refluxed at an oil bath temperature of 110°C and stirred for 24 hours to obtain a black oxygen-containing graphene colloid. Filter the obtained black oxygen-containing graphene colloid, wash with ethanol and water, and dry to obtain the oxygen-containing graphene powder;

[0025] Add 0.1 gram of graphite oxide into 150 milliliters of water, and ultrasonically disperse for 2 hours to form a single-layer uniformly dispersed graphene oxide colloid with a mass concentration of 0.67 mg / ml; dissolve 0.1 gram of tetraaniline in 100 milliliters of N, N-di Methylformamide, made into te...

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Abstract

The invention provides a method for preparing powder oxygen-containing graphene and powder of oxygen-containing grapheme / tetrapolyaniline. The method comprises: adding hydrobromic acid to graphite oxide colloid subjected to ultrasonic peeling; performing oil bath and filtration on obtained colloid; obtaining oxygen-containing grapheme powder by drying the obtained product washed with ethanol and water; adding tetrapolyaniline and hydrobromic acid in turn to the graphite oxide colloid subjected to ultrasonic peeling; performing oil bath and filtration on the obtained colloid; and obtaining composite powder of oxygen-containing grapheme / tetrapolyaniline by drying the obtained product washed with acetone, ethanol and water. The oxygen-containing graphene and the powder of oxygen-containing grapheme / tetrapolyaniline can be used as electrode materials for super capacitors.

Description

technical field [0001] The invention relates to a preparation method of a supercapacitor electrode material, in particular to a preparation method of an oxygen-containing graphene and an oxygen-containing graphene / tetrapaniline supercapacitor electrode material. Background technique [0002] Graphene is a new type of carbon material with a two-dimensional lattice structure in which carbon atoms are tightly packed, with a thickness of about 0.34 nanometers. It is the basic unit of other dimensional carbon materials. According to the number of layers, it can be divided into one-layer or few-layer graphene. Theoretical research on graphene has a history of 60 years, but the two-dimensional graphene that can truly exist independently was obtained by Novoselov et al. from the University of Manchester in 2004 by stripping highly oriented pyrolytic graphite with adhesive tape. Since the discovery of graphene, graphene has become a hot spot in material science due to its excellent ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G9/058H01G11/86
CPCY02E60/13
Inventor 陈尧张熊余鹏张大成马衍伟
Owner INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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