Issue 21, 2012
From the journal:

Journal of Materials Chemistry

Highly efficient electrolytic exfoliation of graphite into graphene sheets based on Li ions intercalation–expansion–microexplosion mechanism†

Hui Huang,*a   Yang Xia,a   Xinyong Tao,a   Jun Du,a   Junwu Fang,a   Yongping Gana  and  Wenkui Zhang*a  

* Corresponding authors

a College of Chemical Engineering and Materials Science, Zhejiang University of Technology, Hangzhou, P. R. China
E-mail: hhui@zjut.edu.cn, msechem@zjut.edu.cn.
Tel: +86-571-88320394

Abstract

In this communication, we report a facile and novel molten salt electrolysis method to prepare high-quality graphene sheets. Transmission electron microscopy (TEM) and atomic force microscopy (AFM) confirmed that the final products exfoliated from the electrolysis of graphite cathode in the molten LiOH medium are mainly graphene sheets (approx. 80 wt% conversion efficiency). Raman spectroscopy revealed that the as-formed graphene sheets have significantly low density of defects. Based on these observations, the exfoliation mechanism of graphite cathode into graphene sheets through lithium intercalation–expansion–microexplosion processes was proposed. The discovery of a molten salt electrolysis method presents us with the possibility for large scale and continuous production of graphene.

Graphical abstract: Highly efficient electrolytic exfoliation of graphite into graphene sheets based on Li ions intercalation–expansion–microexplosion mechanism

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Article information

DOI
https://doi.org/10.1039/C2JM00092J
Article type
Communication
Submitted
05 Jan 2012
Accepted
03 Apr 2012
First published
25 Apr 2012

J. Mater. Chem., 2012,22, 10452-10456

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Highly efficient electrolytic exfoliation of graphite into graphene sheets based on Li ions intercalation–expansion–microexplosion mechanism

H. Huang, Y. Xia, X. Tao, J. Du, J. Fang, Y. Gan and W. Zhang, J. Mater. Chem., 2012, 22, 10452 DOI: 10.1039/C2JM00092J

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