A continuous preparation system for graphene
A preparation system and graphene technology, applied in the direction of graphene, nano-carbon, etc., can solve the problems of non-continuous production, high energy consumption, low production scale, etc., to avoid uneven heating, avoid secondary pollution, comprehensive Excellent performance
Active Publication Date: 2021-01-22
SICHUAN JUCHUANG SHIMOXI TECH CO LTD +1
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Problems solved by technology
On the one hand, the crystal structure of graphene prepared by redox method is easily destroyed in the process of oxidative intercalation, which leads to the increase of internal defects in graphene, which greatly affects the performance of graphene; On the one hand, there are still a large amount of metal and non-metallic impurities in the graphene produced by the redox method, which further affects the large-scale development and application of graphene; , high energy consumption, and inability to produce continuously will also affect the large-scale production of graphene
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[0029] Hereinafter, a graphene continuous production system according to the present invention will be described in detail with reference to the accompanying drawings and exemplary embodiments.
[0030]Specifically, in the existing preparation process for preparing graphene oxide, such as using Hummers to prepare graphene oxide, the products prepared therein contain more metal and / or non-metallic impurities, resulting in the impurity of the prepared graphene. In the existing graphene preparation process, especially the graphene prepared by the redox method, the graphene will contain a large amount of metal and / or non-metallic impurities. During the oxidation intercalation process, the graphene itself The crystal structure is easily destroyed, resulting in the increase of internal defects in graphene, which greatly affects the performance of graphene. The present invention utilizes the difference between the melting and boiling points of graphene and its impurities, controls th...
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Abstract
The invention provides a continuous graphene preparation system. The continuous graphene preparation system comprises a reaction unit and an atmosphere control unit. The reaction unit comprises a ithreaction area and an nth reaction area which are connected successively in a vertical direction, the reaction unit is capable of enabling oxidized graphene, with functional groups and metal impuritiesand / or nonmetallic impurities, to successively pass through the ith reaction area and the nth reaction area of the reaction unit to react by action of gravity, wherein n is a natural number which islarger than or equal to 2, and i can be any natural number smaller than n. The atmosphere control unit comprises a temperature control mechanism and a vacuum control mechanism which match with each other, the temperature control mechanism is capable of controlling a temperature of the nth reaction area at Tn and controlling a temperature of the ith reaction area at Ti. The continuous graphene preparation system has the advantages that the metal impurities and the nonmetallic impurities in graphene can be removed, a large amount of oxygen-containing functional groups carried in the graphene canbe removed at the same time, and hybridization defect of the graphene can be remedied.
Description
technical field [0001] The invention relates to the technical field of new material preparation, and more specifically, relates to a graphene continuous preparation system. Background technique [0002] In 2004, physicists Andre Heim and Konstantin Novoselov of the University of Manchester first separated single-layer graphene from graphite by mechanical exfoliation, and studied its quasi- Particle properties, and field effect properties. This discovery quickly triggered a graphene research boom all over the world. In just a few years, the research and application of graphene have developed vigorously. [0003] Graphene is a two-dimensional honeycomb network structure composed of carbon atoms. It is a surface material composed of a single layer of carbon atoms that can be directly peeled off from graphite. The arrangement of carbon atoms in graphene is the same as that of graphite. They all belong to the compound hexagonal crystal structure. On the two-dimensional plane, S...
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IPC IPC(8): C01B32/184
CPCC01B32/184
Inventor 李星刘长虹蔡雨婷漆长席蒋虎南
Owner SICHUAN JUCHUANG SHIMOXI TECH CO LTD