International Journal of Hydrogen Energy, volume 33, issue 12, pages 3137-3141
Effect of operative conditions on a PEFC stack performance
Publication type: Journal Article
Publication date: 2008-06-01
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor: 7.2
ISSN: 03603199
Condensed Matter Physics
Energy Engineering and Power Technology
Fuel Technology
Renewable Energy, Sustainability and the Environment
Abstract
The operative conditions influence the performance of a polymer electrolyte fuel cell (PEFC). In particular, when a multi-cell (stack) instead of a single cell is investigated, a proper water management and flow stoichiometric ratio are essential for obtaining high electrical conversion efficiency. In this paper, a five cell air cooled PEM fuel cell stack was designed and realized, and systematic studies on the influence of the reactants humidification have been carried out to optimize the operative conditions. Polarization curves and time test at a fixed current have been conducted for various cathode (RHC) and anode (RHA) inlet humidity conditions. In particular, a small decay and low performance were obtained for RHA and RHC 70 % and a considerable decay and low performance for RHA and RHC > 70 % . A good compromise for water management, in terms of decay and performance, is obtained when a symmetrical RH of 70% was used, because in this case an optimal water balance was probably reached considering that high flow of gases was used. In fact, insufficient water content implies a lower ion conductivity of the membrane whereas excess of water yields to flooding of the electrodes and parasitic losses due to the presence of water in the gas channels. Consequently, these effects lead to a lowering of voltages during lifetime tests. In any case, the cathode RH has a stronger influence on the stack decay compared to the anode one. In the optimal selected conditions of RH a constant and stable power of about 55 W (at 20 A) was obtained during the 15 h of operation.
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Citations by publishers
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1 publication, 2.94%
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1 publication, 2.94%
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1 publication, 2.94%
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Taylor & Francis
1 publication, 2.94%
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- We do not take into account publications without a DOI.
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Urbani F. et al. Effect of operative conditions on a PEFC stack performance // International Journal of Hydrogen Energy. 2008. Vol. 33. No. 12. pp. 3137-3141.
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Urbani F., Barbera O., Giacoppo G., Squadrito G., Passalacqua E. Effect of operative conditions on a PEFC stack performance // International Journal of Hydrogen Energy. 2008. Vol. 33. No. 12. pp. 3137-3141.
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TY - JOUR
DO - 10.1016/j.ijhydene.2007.11.014
UR - https://doi.org/10.1016/j.ijhydene.2007.11.014
TI - Effect of operative conditions on a PEFC stack performance
T2 - International Journal of Hydrogen Energy
AU - Urbani, Francesco
AU - Barbera, Orazio
AU - Giacoppo, Giosuè
AU - Squadrito, Gaetano
AU - Passalacqua, Enza
PY - 2008
DA - 2008/06/01 00:00:00
PB - Elsevier
SP - 3137-3141
IS - 12
VL - 33
SN - 0360-3199
ER -
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BibTex
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@article{2008_Urbani,
author = {Francesco Urbani and Orazio Barbera and Giosuè Giacoppo and Gaetano Squadrito and Enza Passalacqua},
title = {Effect of operative conditions on a PEFC stack performance},
journal = {International Journal of Hydrogen Energy},
year = {2008},
volume = {33},
publisher = {Elsevier},
month = {jun},
url = {https://doi.org/10.1016/j.ijhydene.2007.11.014},
number = {12},
pages = {3137--3141},
doi = {10.1016/j.ijhydene.2007.11.014}
}
Cite this
MLA
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Urbani, Francesco, et al. “Effect of operative conditions on a PEFC stack performance.” International Journal of Hydrogen Energy, vol. 33, no. 12, Jun. 2008, pp. 3137-3141. https://doi.org/10.1016/j.ijhydene.2007.11.014.