Highly efficient and large-scale synthesis of graphene by electrolytic exfoliation

Authors

Guoxiu Wang, University of WollongongFollow
Bei Wang, University of WollongongFollow
Jinsoo Park, University of WollongongFollow
Ying Wang, University of WollongongFollow
Bing Sun, University of WollongongFollow
Jane Yao, ISEM

RIS ID

31520

Publication Details

Wang, G., Wang, B., Park, J., Wang, Y., Sun, B. Yao, J. (2009). Highly efficient and large-scale synthesis of graphene by electrolytic exfoliation. Carbon, 47 (14), 3242-3246.

Abstract

Highly efficient and large-scale synthesis of graphene from graphite was produced by electrolytic exfoliation using poly(sodium-4-styrenesulfonate) as an effective electrolyte. Scanning and transmission electron microscopy, and atomic force microscopy confirmed the existence of monolayer graphene sheets and stacks containing a few graphene sheets. Raman spectroscopy demonstrated that the as-prepared graphene sheets have low defect content. Based on the measurement of FTIR spectra, the edge-to-face interaction (π–π interaction) between the graphene surface and aromatic rings of poly(sodium-4-styrenesulfonate) could be primarily responsible for producing exfoliation of the graphite electrode to graphene during electrolysis. In contrast to micromechanical exfoliation, electrolytic exfoliation can be scaled up for large-scale and continuous graphene production.