Validation of an externally oil-cooled 1 kWel HT-PEMFC stack operating at various experimental conditions
Loading...
Date
2013
Journal Title
Journal ISSN
Volume Title
Publisher
Elsevier
Abstract
The performance of 1 kWel 48-cell HT-PEMFC at various experimental conditions is presented, particularly at several CO concentrations (up to 1.0%). Polarization curves measured at various anode (1.0-2.5) and cathode (1.6-4.0) stoichiometries; stack operating temperatures (120-160 o C) and gas pressures (up to 0.5 barg) arereported and analysed. The minimum gas stoichiometries of 1.25 and 2.0 were determined for the anode and cathode, respectively. The highest stack power density of 225 mW cm-2 was measured at 160 o C and 0.4 A cm-2. Operation at COconcentrations up to 1% was achieved, although a loss of performance of about 4% was observed for low CO concentrations. The operating temperature enhanced fuel cell performance and tolerance to CO, even when supplied with higher CO concentration in the anode feed gas.
Description
Keywords
HT-PEMFC, Fuel cell stack, Externally cooled, Performance, CO tolerance
Citation
Bujlo, P. et al. (2013). Validation of an externally oil-cooled 1 kWel HT-PEMFC stack operating at various experimental conditions. International Journal of Hydrogen Energy, 38: 9847 – 9855