Electrochimica Acta, volume 464, pages 142963
Relative humidity impact on the performance and internal resistances of a PEFC working at maximum output power
1
Escuela Superior Politécnica Del Litoral, ESPOL, Facultad de Ingeniería Mecánica y Ciencias de La Producción, Centro de Energías Renovables y Alternativas, Campus Gustavo Galindo Km. 30.5 Vía Perimetral, P.O. Box 09-01-5863, Guayaquil, Ecuador
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2
Escuela Superior Politécnica del Litoral, Facultad de Ingeniería Mecánica y Ciencias de la Producción, Campus Gustavo Galindo Km. 30.5 Vía Perimetral, Guayaquil, Ecuador
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Publication type: Journal Article
Publication date: 2023-10-01
General Chemical Engineering
Electrochemistry
Abstract
Polymer electrolyte fuel cell (PEFC) development goes hand in hand with a complete understanding of its behavior in realistic operating conditions. Hence, analysis based on characterizations is essential to determine the predominant effects strongly affecting PEFC performance. Experimental research is carried out using a single PEFC under controlled conditions. The primary objective is to examine the cell's maximum power output through polarization curves, Nyquist diagrams, and internal resistant graphs. The analysis is performed, varying the cell's relative humidity (RH) from 16% to 100%. The results are accomplished by employing current sweep load and electrochemical impedance spectroscopy. It was demonstrated that the operation at the maximum power of a PEFC is optimized in the relative humidity range of 66-100%. This range allows for a balance of proper hydration of the polymer membrane and the availability and activation of reaction sites. The internal resistances were evaluated individually and presented in graphs showing a decrease when the RH increases, where ohmic and mass transport resistances are the most affected by the RH. Furthermore, the mass transport and ohmic resistances were dominant at low RH. In contrast, ohmic and charge transfer resistance were prevalent at high RH, indicating the required improvements at these points. Finally, several correlations are proposed to obtain internal resistance values as a function of the RH with a confidence interval of 95%.
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Citations by journals
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International Journal of Hydrogen Energy
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Russian Chemical Reviews
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Citations by publishers
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Elsevier
1 publication, 50%
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Autonomous Non-profit Organization Editorial Board of the journal Uspekhi Khimii
1 publication, 50%
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Santana-Villamar J. et al. Relative humidity impact on the performance and internal resistances of a PEFC working at maximum output power // Electrochimica Acta. 2023. Vol. 464. p. 142963.
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Santana-Villamar J., Espinoza M., Echeverria S., Cedeño G., Andersson M. Relative humidity impact on the performance and internal resistances of a PEFC working at maximum output power // Electrochimica Acta. 2023. Vol. 464. p. 142963.
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TY - JOUR
DO - 10.1016/j.electacta.2023.142963
UR - https://doi.org/10.1016/j.electacta.2023.142963
TI - Relative humidity impact on the performance and internal resistances of a PEFC working at maximum output power
T2 - Electrochimica Acta
AU - Santana-Villamar, Jordy
AU - Espinoza, Mayken
AU - Echeverria, Samir
AU - Cedeño, Gabriel
AU - Andersson, Martin
PY - 2023
DA - 2023/10/01 00:00:00
PB - Elsevier
SP - 142963
VL - 464
SN - 0013-4686
ER -
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@article{2023_Santana-Villamar,
author = {Jordy Santana-Villamar and Mayken Espinoza and Samir Echeverria and Gabriel Cedeño and Martin Andersson},
title = {Relative humidity impact on the performance and internal resistances of a PEFC working at maximum output power},
journal = {Electrochimica Acta},
year = {2023},
volume = {464},
publisher = {Elsevier},
month = {oct},
url = {https://doi.org/10.1016/j.electacta.2023.142963},
pages = {142963},
doi = {10.1016/j.electacta.2023.142963}
}
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