Device for quickly peeling graphene under ultrasonic and electric field synergistic effect and method for quickly peeling graphene by using same

A technology of exfoliating graphene and synergistic effect, applied in the field of materials, to achieve the effects of good uniformity, low equipment requirements, and simple device configuration

Inactive Publication Date: 2016-06-08
焦云 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of various defects in the above-mentioned method for preparing graphene, and provide a device for quickly peeling graphene by the synergy of ultrasound and electric field and a method for quickly peeling graphene by using the device

Method used

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  • Device for quickly peeling graphene under ultrasonic and electric field synergistic effect and method for quickly peeling graphene by using same

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specific Embodiment approach 1

[0014] Specific implementation mode one: combine figure 1 Shown, a kind of device that ultrasound and electric field synergistically peel off graphene rapidly, it comprises ultrasonic device 1, graphite positive electrode 2-1, graphite negative electrode 2-2 and container 3; Fill electrolyte solution in the described container 3; The ultrasonic device 1, the graphite positive electrode 2-1 and the graphite negative electrode 2-2 are placed in the container 3; the ultrasonic device 1 is placed in the middle of the graphite positive electrode 2-1 and the graphite negative electrode 2-2.

specific Embodiment approach 2

[0015] Embodiment 2: This embodiment is different from Embodiment 1 in that the container 3 is a plexiglass container. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0016] Embodiment 3: This embodiment is different from Embodiment 1 in that the container 3 is placed in the water tank 4, and the water tank 4 is filled with cooling water. Others are the same as in the first embodiment.

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Abstract

The invention relates to a device for quickly peeling graphene under an ultrasonic and electric field synergistic effect and a method for quickly peeling the graphene by using the device, and belongs to the technical field of materials. The problem that various defects exist in an existing method for preparing the graphene is solved. The device comprises an ultrasonic device, a graphite positive electrode, a graphite negative electrode and a container. The method comprises the following steps: firstly, preparing the device; secondly, applying ultrasonic wave to control the forward and reverse voltages of graphite electrodes; thirdly, after the reaction is finished, filtering, collecting sediments, washing and carrying out freeze drying to obtain the graphene. High-purity graphite is taken as the positive and negative electrodes, an intercalation agent in electrolyte enters into the graphite electrodes under the ultrasonic and electric field synergistic effect, so that the graphene is quickly peeled from the surface of a graphite block body and is further crashed, and the obtained graphene is good in uniformity and dispersibility. The device is simple, simple in technology and low in cost, cannot cause influence on the structure and performance of the graphene, is green and environment-friendly, and is convenient for industrial production.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to a device for rapidly exfoliating graphene through the synergistic action of ultrasound and an electric field and a method for rapidly exfoliating graphene by using the device. Background technique [0002] Graphene has excellent mechanical properties, thermal conductivity, electrical conductivity and optical properties, in addition, graphene also has excellent magnetic properties, ultra-high specific surface area (theoretical value up to 2630m 2 / g) and adsorption properties. [0003] Geim et al obtained graphene by sticking the two sides of the graphite sheet with adhesive tape and repeatedly sticking and tearing the graphite sheet to peel off the graphite sheet. The process is simple and the quality of the prepared graphene is high, but the size of the graphene sheet prepared by this method is small and the yield is low, which is not suitable for large-scale prod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/04
Inventor 焦云马庆
Owner 焦云
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