Manufacturing system and method for graphene powder

Abstract

The invention provides a manufacturing system for graphene powder. The system is used to strip a graphite raw material to obtain the graphene powder having a molecular structure of less than ten layers; and the manufacturing system comprises a feeding unit, a rolling unit, a conveying unit and at least one energetic gas molecule impulse unit; the feeding unit is used for inputting the graphite rawmaterial; the rolling unit includes at least one rolling wheel rotating along a pivot and an auxiliary member corresponding to the rolling wheel, an included angle is formed between the rolling wheeland the auxiliary member for receiving the graphite raw material from the feeding unit, and the rolling wheel rotates along the pivot relative to the auxiliary member at a differential speed to applypressure and friction to the graphite raw material to form a graphene precursor intermediate product; the conveying unit is used for receiving the graphene precursor intermediate product; and the energetic gas molecule impulse unit is used for generating high-kinetic-energy gas molecular to impulse the graphene precursor intermediate product to make at least a portion of the graphene precursor intermediate product separated into the graphene powder.

Description

technical field [0001] A graphene powder manufacturing system and a manufacturing method using the manufacturing system. Background technique [0002] Graphite is mainly composed of multi-layer planar carbon atomic structures, and the multi-layer planar carbon atomic structures are combined by Van Der Waals Force. In the past, solid-state physicists advocated two-dimensional atomic crystallization theoretically. Instability, it is believed that two-dimensional atomic crystals cannot exist in a general environment. However, in 2004, many physicists such as Novoselov and Kostya used adhesive tape to repeatedly peel off graphite, and peeled off a small amount of single-layer two-dimensional graphene (Single-layer graphene) from natural graphite, and published this in "Carbon Electric Field Effect in Atomically Thin Carbon Films" (Electric Field Effect in Atomically Thin Carbon Films) was published in the October 2004 issue of "Science" (American Association for the Advancement...

AI Technical Summary

Problems solved by technology

However, due to each processing process, the gas in the chamber must be pressurized to 8 to 60 MPa, which is about 80 to 600 times the atmospheric pressure, and each batch of graphene to be processed must go through a process of reducing the pressure to one atmospheric pressure. Such repeated processing not only consumes a lot of energy, but also because the pressure of the processing process is too high, the volume of the chamber must be very small, and the output is very low, which is completely unsuitable for commercial operation and mass production.

[0011] In order to achieve the level of mass production, as disclosed in the Taiwan Invention Application No. 103140604 "Manufacturing Method of Sheet Graphene", the airflow interface between the first flow path and the second flow path is generated by using forward and reverse air flow. A shearing airflow is applied to the graphite block, and the shearing airflow has a wind speed between 1m / s and 200m / s, but according to the content of the case specification, the so-called sheet-shaped graphene obtained by it covers a range from 1 to 200m / s. 3,000,000 layers, such a wide range, compared with the general standard that the number of layers is less than 10 layers is defined as graphene, it can only be called exfoliated graphite powder, and most of this graphite powder does not have the characteristics of graphene. characteristics, and it is not possible to successfully obtain graphene ranging from single layer to ten layers

Images