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:
- b c Abdullah, A. M. a, A. M. b c Mohammad, T. c Okajima, F. c Kitamura, and T. c Ohsaka, "Effect of relative humidity on temperature and current distributions within a segmented H 2/air PEM fuel cell", ECS Transactions, vol. 35, no. 34, Montreal, QC, pp. 293-302, 2011.
Abstract:
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:
cited By (since 1996)0; Conference of org.apache.xalan.xsltc.dom.DOMAdapter@586cdf4c ; Conference Date: org.apache.xalan.xsltc.dom.DOMAdapter@53b823ee Through org.apache.xalan.xsltc.dom.DOMAdapter@5e3f0932; Conference Code:93652