Ahmad M. Mohammad Alakraa
"Professor of Physical Chemistry"
Department of Chemistry, Faculty of Science, Cairo University, P.O. 12613 – Giza, Egypt (email)
Effect of relative humidity on temperature and current distributions within a segmented H 2/air PEM fuel cell
- Citation:
- Abdullah, A. M., A. M. Mohammad, T. Okajima, F. Kitamura, and T. Ohsaka, "Effect of relative humidity on temperature and current distributions within a segmented H 2/air PEM fuel cell", Nanostructured Materials for Energy Storage and Conversion - 219th ECS Meeting, vol. 35, issue 34, Montreal, QC, pp. 293 - 302, 2011.
Date Presented:
2011Abstract:
The effect of the operating relative humidity (RH) values on the temperature and current distributions within a 5-5 segmented H 2/air polymer electrolyte membrane fuel cell was studied. Different relative humidity values were applied ranging from 0 to 100%. All the measurements were done at a constant potential mode rather than a constant current mode. While the temperature distributions in front of the 5 subcells at different RH values were measured using thermocouples inserted at the back of the graphite current collectors, and the current distributions within these 5 subcells were measured using 5 potentiostats that have been used as zero resistance ammeters. The results show significant temperature gradients at the different loads as a function of the operating RH values. In addition, the fraction of current (α) passed through every subcell revealed interesting behaviors at the corresponding RH values. ©The Electrochemical Society.
Notes:
Conference code: 93652Export Date: 28 February 2016Correspondence Address: Abdullah, A.M.; Department of Chemical and Petrochemicals Engineering, Egypt Japan University of Science and Technology, New Borg El-Arab City, Alexandria 21934, EgyptReferences: Barbir, F., (2005) PEM Fuel Cells: Theory and Practice, p. 456. , Academic Press, USA, MA;Saleh, M.M., Okajima, T., Hayase, M., Kitamura, F., Ohsaka, T., (2007) J. Power Sources, 164, p. 503;
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