Issue 39, 2011

A green and ultrafast approach to the synthesis of scalable graphenenanosheets with Zn powder for electrochemical energy storage

Abstract

We developed a novel and ultrafast method to reduce graphene oxide (GO) with Zn powder in mild alkaline conditions under ultrasonication only for 10 min at room temperature. The as-prepared graphene nanosheets (GNs) are characterized by scanning electron microscopy, transmission electron microscopy, atomic force microscopy, X-ray photoelectron spectroscopy and so on. Moreover, we proposed the reducing mechanism under which Zn powder and GO formed numerous Zn-GO primary batteries in the presence of ammonia solution, which can effectively remove a significant fraction of the oxygen-containing functional groups and yield a C/O ratio as high as 8.09 and 8.58 reduced by ultrasonication for 10 min and 60 min, respectively. A maximum specific capacitance of 116 F gāˆ’1 in an aqueous KOH electrolyte solution has been obtained. This approach presents us with a possibility for an environmentally friendly, ultrafast, low-cost and large-scale production of GNs and great potentials in electrochemical energy storage applications of graphene-based materials.

Graphical abstract: A green and ultrafast approach to the synthesis of scalable graphene nanosheets with Zn powder for electrochemical energy storage

Supplementary files

Article information

Article type
Paper
Submitted
08 Jun 2011
Accepted
01 Aug 2011
First published
06 Sep 2011

J. Mater. Chem., 2011,21, 15449-15455

A green and ultrafast approach to the synthesis of scalable graphene nanosheets with Zn powder for electrochemical energy storage

Y. Liu, Y. Li, M. Zhong, Y. Yang, Yuefang Wen and M. Wang, J. Mater. Chem., 2011, 21, 15449 DOI: 10.1039/C1JM12599K

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Spotlight

Advertisements