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Preparation method of graphene paper

A graphene paper, graphene technology, applied in graphene, chemical instruments and methods, inorganic chemistry and other directions, can solve the problems of no good research results, high energy consumption, difficult separation of materials and filter membranes, etc., to achieve easy separation , uniform thickness, simple operation effect

Inactive Publication Date: 2017-10-17
QINGDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the methods for preparing graphene paper mainly include vacuum suction filtration, liquid phase electrophoretic deposition, and gas-liquid surface self-assembly, etc., but there are some limitations in different aspects. There are also disadvantages such as high energy consumption and difficult separation of materials and membranes.
In addition, with the gradual development of wearable devices based on flexible electronics, building special structures or patterning is a common strategy to increase the tensile properties of materials, but there is no good method for preparing patterned graphene paper. Research results

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Such as figure 2 As shown in the flow chart, a method for preparing graphene paper includes the following steps:

[0035] (1) Electrospun nanofiber membrane substrate: Nylon and formic acid are mixed in a mass ratio of 3:22, stirred with a magnetic stirrer for 4 hours to obtain a uniform spinning precursor, and the obtained spinning precursor is added to the electrostatic spinning In the liquid storage mechanism of the device, the aluminum foil is used as the collector, and the nylon nanofiber membrane is prepared by the electrostatic spinning method. The spinning power source is 20kV, the spinning distance is 12-15cm, and the spinning solution is 3ml. The nanofiber membrane lining is obtained on the aluminum foil. bottom;

[0036] (2) Electrospray composite graphene oxide film: place the graphene oxide dispersion in figure 1 In the liquid storage mechanism 2 of the electrostatic spray device shown, the aluminum foil attached with the nanofiber film substrate of step (1) is...

Embodiment 2

[0043] A method for preparing graphene paper includes the following steps:

[0044] (1) Electrospun nanofiber membrane substrate: Nylon and formic acid are mixed in a mass ratio of 3:22, stirred with a magnetic stirrer for 4 hours to obtain a uniform spinning precursor, and the obtained spinning precursor is added to the electrostatic spinning In the liquid storage mechanism of the device, a metal plate with a hollow circular pattern is used as a collector, and a nylon nanofiber membrane is prepared by electrospinning. The spinning power source is 20kV, the spinning distance is 15cm, and the spinning solution is 3ml. Obtain a nanofiber membrane substrate on the surface of the metal plate with a circular pattern;

[0045] (2) Electrospray composite graphene oxide film: place the graphene oxide dispersion in figure 1 In the liquid storage mechanism 2 of the electrostatic spray device shown, the metal plate with the hollow circular pattern attached to the nanofiber membrane substrate ...

Embodiment 3

[0049] A method for preparing graphene paper includes the following steps:

[0050] (1) Electrospun nanofiber membrane substrate: Polyvinylpyrrolidone (PVP) is dissolved in deionized water to prepare a solution spinning precursor. The mass fraction of PVP in the spinning precursor is 12%. The silk precursor is added to the liquid storage mechanism of the electrospinning device, the metal plate with a hollow circular pattern is used as the collector, and the nylon nanofiber membrane is prepared by the electrospinning method. The spinning power supply is 20kV, the spinning distance is 15cm, and the spinning Time 20min, that is, the nanofiber membrane substrate is obtained on the surface of the metal plate with the hollow circular pattern;

[0051] (2) Electrospray composite graphene oxide film: place the graphene oxide dispersion in figure 1 In the liquid storage mechanism 2 of the electrostatic spray device shown, the metal plate with the hollow circular pattern attached to the nano...

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Abstract

The invention discloses a preparation method of graphene paper. The preparation method includes following steps: (1), electrospinning a nanofiber membrane substrate; (2), electrospraying to a composite graphene oxide thin film; (3), removing a substrate; (4), reducing graphene oxide. Compared with existing methods, the preparation method has the advantages that the preparation method is simpler to operate and low in cost, the graphene paper prepared by the method is uniform in thickness, has good electrochemical performance and easy to separate from a substrate material, large-area graphene paper can be prepared by the method, patterning of the graphene paper can be realized directly in the process of preparation, and application field of materials is expanded.

Description

Technical field [0001] The invention belongs to the technical field of graphene material preparation, and specifically relates to a method for preparing graphene paper. Background technique [0002] Graphene is a single-layer two-dimensional carbon atom crystal discovered in 2004. Its unique two-dimensional layered structure and excellent electrical, thermal and mechanical properties make it useful in flexible electronics, photoelectric detection, energy storage, etc. The field shows very excellent application prospects. Limited by the preparation methods of graphene, there are still difficulties in preparing large-size and good-quality single-layer graphene samples, most of which are limited to the micrometer scale. In order to realize applications, how to assemble graphene materials with macroscale has become a recent scientific research. One of the hotspots of worker research. Graphene paper, as a typical two-dimensional structure of graphene macroscopic assembly material, h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/184
CPCC01B2204/04C01P2004/03C01P2006/40
Inventor 韩文鹏龙云泽郭亚楠高志远燕军祥张红娣张君诚阎世英
Owner QINGDAO UNIV
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