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

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...

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Autores principales: Gao, Xin, Hiraoka, Tomomasa, Ohmagari, Shunsuke, Tanaka, Shigeru, Sheng, Zemin, Liu, Kaiyuan, Xu, Meng, Chen, Pengwan, Hokamoto, Kazuyuki
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6955808/
https://www.ncbi.nlm.nih.gov/pubmed/31888135
http://dx.doi.org/10.3390/nano9121785
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author Gao, Xin
Hiraoka, Tomomasa
Ohmagari, Shunsuke
Tanaka, Shigeru
Sheng, Zemin
Liu, Kaiyuan
Xu, Meng
Chen, Pengwan
Hokamoto, Kazuyuki
author_facet Gao, Xin
Hiraoka, Tomomasa
Ohmagari, Shunsuke
Tanaka, Shigeru
Sheng, Zemin
Liu, Kaiyuan
Xu, Meng
Chen, Pengwan
Hokamoto, Kazuyuki
author_sort Gao, Xin
collection PubMed
description 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.
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spelling pubmed-69558082020-01-23 High-Efficiency Production of Large-Size Few-Layer Graphene Platelets via Pulsed Discharge of Graphite Strips Gao, Xin Hiraoka, Tomomasa Ohmagari, Shunsuke Tanaka, Shigeru Sheng, Zemin Liu, Kaiyuan Xu, Meng Chen, Pengwan Hokamoto, Kazuyuki Nanomaterials (Basel) Article 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. MDPI 2019-12-16 /pmc/articles/PMC6955808/ /pubmed/31888135 http://dx.doi.org/10.3390/nano9121785 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Gao, Xin
Hiraoka, Tomomasa
Ohmagari, Shunsuke
Tanaka, Shigeru
Sheng, Zemin
Liu, Kaiyuan
Xu, Meng
Chen, Pengwan
Hokamoto, Kazuyuki
High-Efficiency Production of Large-Size Few-Layer Graphene Platelets via Pulsed Discharge of Graphite Strips
title High-Efficiency Production of Large-Size Few-Layer Graphene Platelets via Pulsed Discharge of Graphite Strips
title_full High-Efficiency Production of Large-Size Few-Layer Graphene Platelets via Pulsed Discharge of Graphite Strips
title_fullStr High-Efficiency Production of Large-Size Few-Layer Graphene Platelets via Pulsed Discharge of Graphite Strips
title_full_unstemmed High-Efficiency Production of Large-Size Few-Layer Graphene Platelets via Pulsed Discharge of Graphite Strips
title_short High-Efficiency Production of Large-Size Few-Layer Graphene Platelets via Pulsed Discharge of Graphite Strips
title_sort high-efficiency production of large-size few-layer graphene platelets via pulsed discharge of graphite strips
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6955808/
https://www.ncbi.nlm.nih.gov/pubmed/31888135
http://dx.doi.org/10.3390/nano9121785
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