Fabrication of graphene by electrochemical exfoliation in alkaline electrolytes

Li Chung Chang, Yu Chi Hsieh, Yong Min Chen, Pu-Wei Wu*, Jyh Fu Lee

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

Fabrication of graphene was demonstrated by electrochemical exfoliation of graphite in an ammonium hydroxide solution. The processing parameter of applied voltage was optimized to accomplish graphene productivity and desired chemical composition. Images from the atomic force microscopy showed graphene sheets with lateral sizes of several hundred nanometers. Images from the transmission electron microscopy indicated the existence of stacked graphene sheets with thickness of a few graphene layers. Raman spectroscopy confirmed variation of assynthesized graphene and bulk graphite. X-ray photoemission spectroscopy suggested the formation of graphene oxide at large voltage.

Original languageEnglish
Pages (from-to)33-38
Number of pages6
JournalECS Transactions
Volume58
Issue number24
DOIs
StatePublished - 1 Jan 2013

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