A kind of device and method for preparing graphene powder

Abstract

A device for preparing graphene powder, the reaction chamber is connected to the atmosphere generating component; the high-energy discharge component includes a graphene synthesis tube, a first electrode and a second electrode installed at both ends of the graphene synthesis tube, a main controller, an adjustable output power supply and Feed assembly; the graphene synthesis tube, the first electrode and the second electrode are all arranged in a sealed dish, and the first electrode and the second electrode form a ventilation structure with the graphene synthesis tube; the graphene synthesis tube is provided with a carbon source chamber and In the graphene powder chamber, the carbon source chamber is provided with a carbon source addition port; the feeding component is connected to the first control conductive copper column and the second control conductive copper column, and the feeding component is also connected to the adjustable output power supply and the second electrode; the first The electrodes are electrically connected to the main controller, and the main controller is connected to the adjustable output power supply; the second electrode is electrically connected to the adjustable output power supply. The present invention uses lignin as a carbon source, adds a carbon source additive and mixes an activated carbon source, and generates graphene powder under the action of a strong current pulse discharge.

Description

technical field [0001] The invention relates to the technical field of graphene material preparation technology, in particular to a device and method for preparing graphene powder. Background technique [0002] Lignosulfonate is derived from sulfite pulping in the acid pulping process. This process is widely used and is currently the dominant process in the papermaking process. Due to the presence of sulfonic acid groups in the molecule, lignosulfonate The introduction makes it have good water solubility, which greatly improves its reaction ability. Therefore, sodium lignosulfonate is an industrial lignin with abundant sources and wide application. The world's paper industry produces about 50 million tons of lignin every year, 90% of which is concentrated by the alkali recovery system and then incinerated for steam and power generation, and the high-value utilization of lignin has not been realized. Lignin has a very high carbon content, generally 55-65%, and is rich in ben...

AI Technical Summary

Problems solved by technology

This method uses the explosive gas hydrogen, which has potential safety hazards, high requirements for instruments and equipment, and is not conducive to large-scale production

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