Production and preparation method of graphene powder

Abstract

The invention discloses a production and preparation method of graphene powder. The production and preparation method comprises the preparation steps of S1, preparing a raw material graphite oxide, carrying out dispersion treatment on graphite oxide, then carrying out acid washing and water washing, and finally carrying out ultrasonic vibration treatment to form a graphene oxide nano-layer mixed solution; S2, adding a reducing agent and a catalyst into the mixed solution, heating, and then carrying out reflux treatment; S3, filtering the refluxed mixed solution, and then cleaning to form a filter cake; S4, drying the filter cake in a drying oven to form a graphene powder crude product; and S5, firing the graphene powder crude product in an inert gas atmosphere for 3-4 hours to form the graphene powder. The production and preparation method of the graphene powder is high in preparation efficiency, capable of rapidly producing the graphene powder and suitable for application and popularization.

Description

technical field [0001] The invention relates to the technical field of graphene powder, in particular to a production and preparation method of graphene powder. Background technique [0002] Graphene is a sp 2 A new material in which hybrid-connected carbon atoms are tightly packed into a single-layer two-dimensional honeycomb lattice structure. Graphene has excellent optical, electrical, and mechanical properties, and has important application prospects in materials science, micro-nano processing, energy, biomedicine, and drug delivery, and is considered to be a revolutionary material in the future. [0003] Andre Geim and Konstantin Novoselov, physicists at the University of Manchester in the United Kingdom, successfully separated graphene from graphite by micromechanical exfoliation, so they jointly won the 2010 Nobel Prize in Physics. The common powder production methods of graphene are mechanical exfoliation method, redox method, and SiC epitaxial growth method, and t...

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Problems solved by technology

Among the obtained products, the product with the highest degree of oxidation is a yellow solid with a ratio of carbon to oxygen between 2.1 and 2.9, and still retains the layered structure of graphite, but the structure becomes more complex

Existing graphene powder preparation method efficiency is relatively low, and the method for preparing graphene powder by graphite oxide is more complicated, and efficiency is relatively low, and graphene in the prior art is used in paint seldom, and the graphene powder of preparation Poor physical properties;

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