Preparation method of single-crystal graphene conductive ink and single-crystal graphene conductive ink

Abstract

The invention discloses a preparation method of single-crystal graphene conductive ink and the single-crystal graphene conductive ink. The preparation method comprises the following steps: obtaining a predetermined amount of single-crystal graphene; and preparing ink from the predetermined amount of single-crystal graphene. A quartz boat is provided, copper foil is put in the quartz boat, and processing is conducted to obtain a single crystal copper foil; and the pretreated copper foil is put into a quartz boat, and a heating procedure, a gas on-off procedure and a gas flow adjusting procedure are conducted to obtain the single-crystal graphene. The single-crystal graphene is used as a conductive filler, so that the conductivity of the graphene conductive ink is improved, strong scattering of electron movement caused by grain boundary defects generated by use of polycrystalline graphene is reduced, and the technical problem that the conductivity of the polycrystalline graphene conductive ink is relatively low is solved.

Description

technical field [0001] The invention relates to the technical field of graphene conductive ink preparation, in particular to a preparation method of single crystal graphene conductive ink and single crystal graphene conductive ink. Background technique [0002] Graphene conductive ink is a functional ink that makes the ink conductive by adding graphene conductive fillers to the ink. With the development of printed electronics technology, people's demand for graphene conductive ink is increasing. At present, most of the graphene conductive inks on the market are polycrystalline graphene conductive inks. Because the grain boundary defects of polycrystalline graphene will cause strong scattering effects on the movement of electrons, the square resistance of polycrystalline graphene is generally high, so The conductivity of conductive inks prepared from polycrystalline graphene is generally low, so it is necessary to add a certain proportion of nano-silver and other substances ...

AI Technical Summary

Problems solved by technology

At present, most of the graphene conductive inks on the market are polycrystalline graphene conductive inks. Because the grain boundary defects of polycrystalline graphene will cause strong scattering effects on the movement of electrons, the square resistance of polycrystalline graphene is generally high, so The conductivity of conductive inks prepared from polycrystalline graphene is generally low, so it is necessary to add a certain proportion of nano-silver and other substances to improve its conductivity

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