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Journal of Materials
Volume 2013, Article ID 548026, 7 pages
http://dx.doi.org/10.1155/2013/548026
Research Article

Enhanced Performance of Membraneless Sodium Percarbonate Fuel Cells

1Department of Chemistry, Presidency College, Chennai 600 005, India
2Department of Chemical Engineering, SRM University, Chennai 603203, India

Received 17 December 2012; Revised 19 March 2013; Accepted 24 April 2013

Academic Editor: Mike McShane

Copyright © 2013 M. Gowdhamamoorthi 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

This paper presents the continuous flow operation of membraneless sodium percarbonate fuel cell (MLSPCFC) using acid/alkaline bipolar electrolyte. In the acid/alkaline bipolar electrolyte, percarbonate works both as an oxidant as well as reductant. Sodium percarbonate affords hydrogen peroxide in aqueous medium. The cell converts the energy released by H2O2 decomposition with H+ and OH ions into electricity and produces water and oxygen. At room temperature, the laminar flow based microfluidic membraneless fuel cell can reach a maximum power density of 28 mW/cm2 with the molar ratio of [Percarbonate]/[NaOH] = 1 as fuel and [Percarbonate]/[H2SO4] = 2 as oxidant. The paper reports for the first time the use of sodium percarbonate as the oxidant and reductant. The developed fuel cell emits no CO2 and features no proton exchange membrane, inexpensive catalysts, and simple planar structure, which enables high design flexibility and easy integration of the microscale fuel cell into actual microfluidic systems and portable power applications.