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International Journal of Electrochemistry
Volume 2011 (2011), Article ID 434186, 7 pages
http://dx.doi.org/10.4061/2011/434186
Research Article

A Graphite Oxide Paper Polymer Electrolyte for Direct Methanol Fuel Cells

School of Chemical Engineering and Advanced Materials, Newcastle University, Newcastle upon Tyne NE1 7RU, UK

Received 14 June 2011; Revised 12 August 2011; Accepted 12 August 2011

Academic Editor: Jiujun Zhang

Copyright © 2011 Ravi Kumar et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A flow directed assembly of graphite oxide solution was used in the formation of free-standing graphene oxide paper of approximate thickness of 100 μm. The GO papers were characterised by XRD and SEM. Electrochemical characterization of the GO paper membrane electrode assembly revealed proton conductivities of 4.1 × 10−2 S cm−1 to 8.2 × 10−2 S cm−1 at temperatures of 25–90°C. A direct methanol fuel cell, at 60°C, gave a peak power density of 8 mW cm−2 at a current density of 35 mA cm−2.