A kind of graphene and continuous production method thereof

Abstract

The invention provides graphene and a continuous production method thereof. The production method includes the step: enabling graphene oxide containing a functional group, metal impurities and / or non-metal impurities to sequentially pass an i reaction area and an n reaction area to obtain the graphene. The temperature and the pressure intensity of the n reaction area are controlled tobe Tn and Pn, the temperature and the pressure intensity of the i reaction area are controlled to be Ti and Pi, wherein Ti=w1*i / n*Tn, Pi=(P0-Pn)*(1-i / n), the w1 is selected from 0.80 to 1.20, P0 serves as one standard atmospheric pressure, n is a natural number and larger than or equal to 2, and i is all natural numbers smaller than n. According to the production method, metal and non-metal impurities in the graphene can be effectively removed at different temperatures and pressure intensities, a lot of oxygen-containing functional groups brought by the graphene oxide are removed, waste heat can be effectively utilized, reduction efficiency is improved, and continuous production of the graphene can be achieved.

Description

technical field [0001] The invention relates to the technical field of new material preparation, more specifically, to a graphene and its continuous production method. 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, which belongs to the compound hexagonal crystal structure. 2 The hybridized orbitals are stacked...

AI Technical Summary

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 lot of metal and non-metal impurities in graphene produced by redox method, which further affects the large-scale development and application of graphene.

Images