Ultrasonic-assisted liquid phase exfoliation for high-yield monolayer graphene with enhanced crystallinity

TL;DR

This paper introduces a novel ultrasonic-assisted liquid phase exfoliation technique to produce high-yield, high-crystallinity monolayer graphene, offering a scalable and efficient alternative to traditional methods with improved material quality.

Contribution

The study presents a new ultrasonic high-energy intercalation exfoliation method that enhances graphene crystallinity and yield compared to conventional techniques.

Findings

Graphene nanosheets with superior crystallinity were successfully produced.

The method enables scalable production of high-quality graphene.

Enhanced physical performance of graphene derived from this method.

Abstract

Graphene stands as a promising material with vast potential across energy storage, electronics, etc. Here, we present a novel mechanical approach utilizing ultrasonic high-energy intercalation exfoliation to extract monolayer graphene from graphite, offering a simple yet efficient alternative to conventional methods. Through a comprehensive series of characterizations involving atomic force microscopy, scanning electron microscopy, Raman spectroscopy, X-ray diffraction, and X-ray photoelectron spectroscopy, the resulting graphene nanosheets demonstrate superior crystallinity compared to those obtained via the conventional method. The high-crystalline freestanding graphene nanosheets derived from this method not only facilitate easier separation but also significantly enhance the physical performance of the original materials. This method showcases the potential for scalable production of layered materials with increased yield and crystallinity, paving the way for their utilization in various applications.