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Method for manufacturing graphene paper

A graphene paper and graphene technology, applied in the field of preparation of new graphene paper, can solve the problems of cumbersome preparation process, high cost, poor film quality hindering a wide range of applications, etc., and achieve high conductivity and high specific surface area. Effect

Active Publication Date: 2015-10-07
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the preparation process of these graphene films is usually cumbersome and costly, and the poor quality of the prepared films hinders their wide-scale application.

Method used

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  • Method for manufacturing graphene paper
  • Method for manufacturing graphene paper

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Experimental program
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Effect test

Embodiment 1

[0025] (1) Graphite oxide was prepared by the modified Hummers method, and was repeatedly centrifuged and washed with deionized water until neutral. Get graphite oxide (0.05g) and isopropanol solvent (500mL) and mix, in the ultrasonic pool, under the condition that the power is 53KHz, the temperature is 42 ℃ of ultrasonic 3h, obtain graphene oxide isopropanol dispersion liquid, its concentration is 0.1g / l.

[0026] (2) Put a copper sheet at the bottom of a petri dish as a substrate, pour 50ml of the graphene oxide isopropanol dispersion prepared above, put it in a constant temperature and humidity chamber set at 35°C, and volatilize it for 12 hours. The solvent isopropanol in the allyl isopropanol dispersion is completely volatilized, that is, one layer of graphene oxide film is formed on the surface of the copper sheet.

[0027] (3) Take out the copper sheet covered with the graphene oxide film prepared above, and wipe off the graphene oxide film at one end with a paper towe...

Embodiment 2

[0030] (1) Graphite oxide was prepared by the modified Hummers method, and was repeatedly centrifuged and washed with deionized water until neutral. Get graphite oxide (0.05g) and isopropanol solvent (500mL) and mix, in the ultrasonic pool, under the condition that the power is 53KHz, the temperature is 42 ℃ of ultrasonic 3h, obtain graphene oxide isopropanol dispersion liquid, its concentration is 0.1g / l.

[0031] (2) Put ITO glass at the bottom of a petri dish as the substrate, pour 50ml of the graphene oxide isopropanol dispersion prepared above, put it in a constant temperature and humidity chamber set at 35°C, volatilize for 12 hours, and graphite oxide The solvent isopropanol in the allyl isopropanol dispersion is completely volatilized, that is, a graphene oxide film is formed on the surface of the ITO glass.

[0032] (3) Take out the ITO glass covered with the graphene oxide film prepared above, and wipe off the graphene oxide film at one end with a paper towel dipped...

Embodiment 3

[0035] (1) Graphite oxide was prepared by the modified Hummers method, and was repeatedly centrifuged and washed with deionized water until neutral. Get graphite oxide (0.05g) and isopropanol solvent (500mL) and mix, in the ultrasonic pool, under the condition that the power is 53KHz, the temperature is 42 ℃ of ultrasonic 3h, obtain graphene oxide isopropanol dispersion liquid, its concentration is 0.1g / l.

[0036] (2) Put Pt sheet A at the bottom of a petri dish as a substrate, pour 50ml of the graphene oxide isopropanol dispersion prepared above, put it in a constant temperature and humidity chamber set at 35°C, volatilize for 12 hours, and oxidize The solvent isopropanol in the graphene isopropanol dispersion is completely volatilized, that is, one layer of graphene oxide film is formed on the surface of the Pt sheet A.

[0037] (3) Take out the Pt sheet A covered with the graphene oxide film prepared above, and wipe off the graphene oxide film at one end with a paper towe...

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Abstract

The invention provides a method for manufacturing graphene paper. The method includes manufacturing graphene oxide thin films by the aid of a solvent evaporation-induced self-assembly process; reducing the graphene oxide thin films by the aid of an electrochemical reduction process to obtain reduced graphene oxide thin films; peeling the reduced graphene oxide thin films from substrates to obtain the graphene paper. The method has the advantages that the specific surface area of the graphene paper manufactured by the aid of the method can reach 105m<2> / g, the electric conductivity of the graphene paper can reach 12S / m as tested by four-point probes, and accordingly the graphene paper with the high specific surface area and the high electric conductivity has a great prospect in the aspect of energy storage.

Description

(1) Technical field [0001] The invention belongs to the technical field of graphene paper preparation and relates to a preparation method of a novel graphene paper. (2) Background technology [0002] Graphene is a carbon material with a two-dimensional honeycomb crystal structure formed by a single layer of a large number of sp2 hybridized carbon atoms closely arranged. Its unique structure makes it have excellent physical properties such as high theoretical specific surface area, ultrafast electron mobility, high Young's modulus, high strength and high thermal conductivity. Based on the excellent properties of the above graphene materials, graphene materials have broad application prospects in the fields of energy storage, catalysis, sensors, and functional composite materials, especially in the future of nanoelectronic devices, composite materials, solar cells, and supercapacitors. It has great application prospect. Compared with the preparation of graphene materials by ...

Claims

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Application Information

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IPC IPC(8): C01B31/04
Inventor 张诚杜惟实吕耀康纪律律蔡志威朱晓刚何晖晖刘幼幼
Owner ZHEJIANG UNIV OF TECH
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