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Crystals 2019, 9(3), 150; https://doi.org/10.3390/cryst9030150

Preparation of Few-Layer Graphene by Pulsed Discharge in Graphite Micro-Flake Suspension

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
*
Author to whom correspondence should be addressed.
Received: 28 January 2019 / Revised: 3 March 2019 / Accepted: 8 March 2019 / Published: 13 March 2019
(This article belongs to the Special Issue Graphene Mechanics)
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Abstract

Few-layer graphene nanosheets were produced by pulsed discharge in graphite micro-flake suspension at room temperature. In this study, the discharging current and voltage data were recorded for the analysis of the pulsed discharge processes. The as-prepared samples were recovered and characterized by various techniques, such as TEM, SEM, Raman, XRD, XPS, FT-IR, etc. The presence of few-layer graphene (3–9 L) in micrometer scale was confirmed. In addition, it is investigated that the size of recovered graphene nanosheets are influenced by the initial size of utilized graphite micro-flake powder. Based on the process of pulsed discharge and our experimental results, the formation mechanism of few-layer graphene was discussed. The influence of charging voltage on as-prepared samples is also investigated. View Full-Text
Keywords: graphene; graphite flake; liquid pulsed discharge; shock wave graphene; graphite flake; liquid pulsed discharge; shock wave
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Gao, X.; Yokota, N.; Oda, H.; Tanaka, S.; Hokamoto, K.; Chen, P.; Xu, M. Preparation of Few-Layer Graphene by Pulsed Discharge in Graphite Micro-Flake Suspension. Crystals 2019, 9, 150.

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