Selvarani, G. and Sahu, A.K. and Sridhar, P. and Pitchumani, S. and Shukla, A.K. (2008) Effect of diffusion-layer porosity on the performance of polymer electrolyte fuel cells. Journal of Applied Electrochemistry, 38 (3). pp. 357-362. ISSN 0021-891X

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Abstract

The gas-diffusion layer (GDL) influences the performance of electrodes employed with polymer electrolyte fuel cells (PEFCs). A simple and effective method for incorporating a porous structure in the electrode GDL using sucrose as the pore former is reported. Optimal (50 w/o) incorporation of a pore former in the electrode GDL facilitates the access of the gaseous reactants to the catalyst sites and improves the fuel cell performance. Data obtained from permeability and porosity measurements, single-cell performance, and impedance spectroscopy suggest that an optimal porosity helps mitigating masspolarization losses in the fuel cell resulting in a substantially enhanced performance.

Item Type:	Article
Uncontrolled Keywords:	Gas-diffusion layer; Mass transport; PEFC; Pore former; Porosity
Subjects:	Fuel Cells Electrochemical Power Sources
Divisions:	UNSPECIFIED
Depositing User:	ttbdu cecri
Date Deposited:	18 Jan 2012 03:40
Last Modified:	18 Jan 2012 16:01
URI:	http://cecri.csircentral.net/id/eprint/238

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