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Method for transferring fluorinated graphene

A technology of fluorinated graphene and graphene, which is applied in the field of new materials, can solve problems such as inapplicable fluorinated graphene, and achieve the effects of promoting application and mass production, high degree of fluorination, and good controllability

Inactive Publication Date: 2015-09-23
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, transfer is the first problem that needs to be considered after the preparation of fluorinated graphene. The transfer method of conventional graphene is not suitable for fluorinated graphene, which will produce more defects and reduce fluorinated graphene.

Method used

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  • Method for transferring fluorinated graphene
  • Method for transferring fluorinated graphene

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Experimental program
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Effect test

Embodiment 1

[0020] 1) The purchased graphene sample is a single-layer graphene grown on copper foil, taking a size of 1x1cm, using XeF 2 Fluorinating it as a fluorinating agent to obtain a fluorinated graphene sample;

[0021] 2) Put it on a 2-inch glass and fix it with PI tape. Spin-coat PMMA uniformly at a speed of 500r / min for 5 seconds and 4000r / min for 60 seconds. The thickness of PMMA is 270nm;

[0022] 3) Bake the sample at 105 degrees Celsius for 3 minutes;

[0023] 4) Remove the adhesive tape that fixes the fluorinated graphene, and cut off the tape to ensure that the fluorinated graphene is covered by PMMA. Adjust the regulated power supply to 1.37V, use the Pt electrode as the anode, the copper foil of fluorinated graphene as the cathode, and use the NaOH solution with a concentration of 2.5mol / L as the electrolyte. It can be seen that the fluorinated graphene and copper foil are slow Slowly peel off.

[0024] 5) After the complete peeling off, the fluorinated graphene falls...

Embodiment 2

[0027] 1) The purchased graphene sample is a single-layer graphene grown on copper foil, with a size of 5x5mm, using SF 6 Plasma fluorinated it to obtain a fluorinated graphene sample;

[0028] 2) Put it on a 2-inch glass and fix it with PI tape, spin-coat PMMA evenly at a speed of 500r / min for 5 seconds and 4000r / min for 60 seconds, and the thickness of PMMA is: 280nm;

[0029] 3) Bake the sample at 110 degrees Celsius for 3 minutes;

[0030] 4) Remove the adhesive tape that fixes the fluorinated graphene, and cut off the tape to ensure that the fluorinated graphene is covered by PMMA. Adjust the regulated power supply to 1.37V, use the Pt electrode as the anode, the copper foil of fluorinated graphene as the cathode, and use the NaOH solution with a concentration of 2.5mol / L as the electrolyte. It can be seen that the fluorinated graphene and copper foil are slow Slowly peel off.

[0031] 5) After the complete peeling off, the fluorinated graphene falls into the electroly...

Embodiment 3

[0034] 1) The purchased graphene sample is multilayer graphene grown on copper foil, with a size of 5x5mm, and fluorinated it with SF6 plasma to obtain a fluorinated graphene sample;

[0035] 2) Put it on a 2-inch glass and fix it with PI tape, spin-coat PMMA evenly at a speed of 500r / min for 5 seconds and 4000r / min for 60 seconds, and the thickness of PMMA is: 260nm;

[0036] 3) Bake the sample at 110 degrees Celsius for 3 minutes;

[0037] 4) Remove the adhesive tape that fixes the fluorinated graphene, and cut off the tape to ensure that the fluorinated graphene is covered by PMMA. Adjust the regulated power supply to 1.37V, use the Pt electrode as the anode, the copper foil of fluorinated graphene as the cathode, and use the NaOH solution with a concentration of 2.5mol / L as the electrolyte. It can be seen that the fluorinated graphene and copper foil are slow Slowly peel off.

[0038] 5) After the complete peeling off, the fluorinated graphene falls into the electrolyte,...

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Abstract

The invention discloses a method for transferring graphene. The method mainly includes: fluorinating a graphene sample; spin-coating PMMA; adopting an electrochemical method to strip the fluorinated graphene from an original substrate after drying; adopting a target substrate to fish up the fluorinated graphene; removing glue, and drying to complete the transferring process. Compared with existing transferring methods, the method has the advantages of being simple and convenient in equipment and process, high in controllability and low in cost, lays a good foundation for property exploration of the fluorinated graphene and machining of fluorinated graphene devices and is conducive to popularization, application and mass production.

Description

technical field [0001] The invention belongs to the field of new materials and relates to a method for transferring fluorinated graphene. Background technique [0002] As a new derivative of graphene, fluorinated graphene not only maintains the high-strength performance of graphene, but also brings novel interface and physical and chemical properties such as reduced surface energy, enhanced hydrophobicity and widened band gap due to the introduction of fluorine atoms. . At the same time, fluorinated graphene is resistant to high temperature and has stable chemical properties, showing properties similar to polytetrafluoroethylene, and is called "two-dimensional Teflon". These unique properties of fluorinated graphene make it have broad application prospects in the fields of interfaces, new nanoelectronic devices, and lubricant materials. [0003] At present, one method of routinely synthesizing fluorinated graphene is to use XeF 2 Fluorinating agents such as fluorinating g...

Claims

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Application Information

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IPC IPC(8): C01B31/04
Inventor 徐杨陆薇阿亚兹孟楠万霞程呈郭宏伟周翰铭王雪施添锦王锋马玲玲刘雪梅李炜刘威
Owner ZHEJIANG UNIV
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