Preparation of few-layer graphene by pulsed discharge in graphite micro-flake suspension

Xin Gao; Naoaki Yokota; Hayato Oda; Shigeru Tanaka; Kazuyuki Hokamoto; Pengwan Chen; Meng Xu

doi:10.3390/cryst9030150

Preparation of few-layer graphene by pulsed discharge in graphite micro-flake suspension

Xin Gao, Naoaki Yokota, Hayato Oda, Shigeru Tanaka, Kazuyuki Hokamoto, Pengwan Chen^*, Meng Xu

^*Corresponding author for this work

School of Material Science and Engineering

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

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.

Original language	English
Article number	150
Journal	Crystals
Volume	9
Issue number	3
DOIs	https://doi.org/10.3390/cryst9030150
Publication status	Published - Mar 2019

Keywords

Graphene
Graphite flake
Liquid pulsed discharge
Shock wave

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10.3390/cryst9030150

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title = "Preparation of few-layer graphene by pulsed discharge in graphite micro-flake suspension",

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.",

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T1 - Preparation of few-layer graphene by pulsed discharge in graphite micro-flake suspension

AU - Gao, Xin

AU - Yokota, Naoaki

AU - Oda, Hayato

AU - Tanaka, Shigeru

AU - Hokamoto, Kazuyuki

AU - Chen, Pengwan

AU - Xu, Meng

PY - 2019/3

Y1 - 2019/3

N2 - 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.

AB - 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.

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KW - Shock wave

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Preparation of few-layer graphene by pulsed discharge in graphite micro-flake suspension

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