Next Article in Journal
Facile Synthesis of Triphenylamine Based Hyperbranched Polymer for Organic Field Effect Transistors
Next Article in Special Issue
Nanotip Contacts for Electric Transport and Field Emission Characterization of Ultrathin MoS2 Flakes
Previous Article in Journal
The Flexible Lubrication Performance of Graphene Used in Diamond Interface as a Solid Lubricant: First-Principles Calculations
Previous Article in Special Issue
The Electronic and Optical Properties of InSe-GeTe Heterobilayer via Applying Biaxial Strain
Open AccessArticle

High-Efficiency Production of Large-Size Few-Layer Graphene Platelets via Pulsed Discharge of Graphite Strips

1
State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China
2
Institute of Pulsed Power Science, Kumamoto University, Kumamoto 860-8555, Japan
3
School of Material Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
*
Authors to whom correspondence should be addressed.
Nanomaterials 2019, 9(12), 1785; https://doi.org/10.3390/nano9121785
Received: 22 November 2019 / Revised: 10 December 2019 / Accepted: 11 December 2019 / Published: 16 December 2019
(This article belongs to the Special Issue 2D Materials and Their Heterostructures and Superlattices)
The synthesis of large-size graphene materials is still a central focus of research into additional potential applications in various areas. In this study, large-size graphene platelets were successfully produced by pulsed discharge of loose graphite strips with a dimension of 2 mm × 0.5 mm × 80 mm in distilled water. The graphite strips were made by pressing and cutting well-oriented expanded graphite paper. The recovered samples were characterized by various techniques, including TEM, SEM, optical microscopy (OM), atomic force microscopy (AFM), XRD and Raman spectroscopy. Highly crystalline graphene platelets with a lateral dimension of 100–200 μm were identified. The high yield of recovered graphene platelets is in a range of 90–95%. The results also indicate that increasing charging voltage improves the yield of graphene platelets and decreases the number of graphitic layers in produced graphene platelets. The formation mechanism of graphene platelets was discussed. This study provides a one-step cost-effective route to prepare highly crystalline graphene platelets with a sub-millimeter lateral size. View Full-Text
Keywords: graphene; large size; pulsed wire discharge; graphite strip graphene; large size; pulsed wire discharge; graphite strip
Show Figures

Graphical abstract

MDPI and ACS Style

Gao, X.; Hiraoka, T.; Ohmagari, S.; Tanaka, S.; Sheng, Z.; Liu, K.; Xu, M.; Chen, P.; Hokamoto, K. High-Efficiency Production of Large-Size Few-Layer Graphene Platelets via Pulsed Discharge of Graphite Strips. Nanomaterials 2019, 9, 1785.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop