Unveiling the Mechanisms Behind Temperature-Dependent Impedance Behavior in Polymer Electrolyte Fuel Cells at High Current Loads
Santana-Villamar, Jordy ; Andersson, Martin LU
; Li, Tingshuai
and Espinoza-Andaluz, Mayken
LU
(2024)
7th International Conference on Electrical Engineering and Green Energy, CEEGE 2024
In 2024 7th International Conference on Electrical Engineering and Green Energy, CEEGE 2024
p.180-185
- Abstract
Positioning Polymer Electrolyte Fuel Cells (PEFCs) in the market depends on substantial advances that start from a deep knowledge concerning the influence of operating parameters, such as temperature-sweep and high-current density. In the present study, a comprehensive analysis of the impedance behavior of a single PEFC via Electrochemical Impedance Spectroscopy (EIS) was carried out in order to unveil the mechanisms that impact the performance. The tests were setup using a high current density (2. 0 A cm-2) and in a wide temperature range (40-90°C). The impedance response, i.e., ohmic, charge, and mass transport resistances, were obtained using an equivalent circuit model that fits adequately. It was found that for... (More)
Positioning Polymer Electrolyte Fuel Cells (PEFCs) in the market depends on substantial advances that start from a deep knowledge concerning the influence of operating parameters, such as temperature-sweep and high-current density. In the present study, a comprehensive analysis of the impedance behavior of a single PEFC via Electrochemical Impedance Spectroscopy (EIS) was carried out in order to unveil the mechanisms that impact the performance. The tests were setup using a high current density (2. 0 A cm-2) and in a wide temperature range (40-90°C). The impedance response, i.e., ohmic, charge, and mass transport resistances, were obtained using an equivalent circuit model that fits adequately. It was found that for temperatures below 70°C, the loss due to ohmic resistance is dominant with a 54% contribution. In contrast, for temperatures above 70°C, the loss due to charge transfer resistance became dominant, reaching a 72% contribution at 90°C, being the resistance most influenced when operating at high current load for a PEFC-type cell. Furthermore, empirical correlations were obtained to quantify the three internal resistances.
(Less)
- author
- Santana-Villamar, Jordy
; Andersson, Martin
LU
; Li, Tingshuai
and Espinoza-Andaluz, Mayken
LU
- organization
- publishing date
- 2024
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- keywords
- Charge transfer resistance, High current-density, Impedance Spectroscopy, Mass transport resistance, Ohmic resistance, PEFC
- host publication
- 2024 7th International Conference on Electrical Engineering and Green Energy, CEEGE 2024
- series title
- 2024 7th International Conference on Electrical Engineering and Green Energy, CEEGE 2024
- pages
- 6 pages
- publisher
- IEEE - Institute of Electrical and Electronics Engineers Inc.
- conference name
- 7th International Conference on Electrical Engineering and Green Energy, CEEGE 2024
- conference location
- Los Angeles, United States
- conference dates
- 2024-06-28 - 2024-07-01
- external identifiers
-
- scopus:85211895256
- ISBN
- 9798350350623
- DOI
- 10.1109/CEEGE62093.2024.10744120
- language
- English
- LU publication?
- yes
- additional info
- Publisher Copyright: © 2024 IEEE.
- id
- ca14f630-f6fe-4c54-bf0f-1e1b894e3d22
- date added to LUP
- 2024-12-26 16:24:23
- date last changed
- 2025-04-04 14:49:35
@inproceedings{ca14f630-f6fe-4c54-bf0f-1e1b894e3d22,
abstract = {{<p>Positioning Polymer Electrolyte Fuel Cells (PEFCs) in the market depends on substantial advances that start from a deep knowledge concerning the influence of operating parameters, such as temperature-sweep and high-current density. In the present study, a comprehensive analysis of the impedance behavior of a single PEFC via Electrochemical Impedance Spectroscopy (EIS) was carried out in order to unveil the mechanisms that impact the performance. The tests were setup using a high current density (2. 0 A cm<sup>-2</sup>) and in a wide temperature range (40-90°C). The impedance response, i.e., ohmic, charge, and mass transport resistances, were obtained using an equivalent circuit model that fits adequately. It was found that for temperatures below 70°C, the loss due to ohmic resistance is dominant with a 54% contribution. In contrast, for temperatures above 70°C, the loss due to charge transfer resistance became dominant, reaching a 72% contribution at 90°C, being the resistance most influenced when operating at high current load for a PEFC-type cell. Furthermore, empirical correlations were obtained to quantify the three internal resistances.</p>}},
author = {{Santana-Villamar, Jordy and Andersson, Martin and Li, Tingshuai and Espinoza-Andaluz, Mayken}},
booktitle = {{2024 7th International Conference on Electrical Engineering and Green Energy, CEEGE 2024}},
isbn = {{9798350350623}},
keywords = {{Charge transfer resistance; High current-density; Impedance Spectroscopy; Mass transport resistance; Ohmic resistance; PEFC}},
language = {{eng}},
pages = {{180--185}},
publisher = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}},
series = {{2024 7th International Conference on Electrical Engineering and Green Energy, CEEGE 2024}},
title = {{Unveiling the Mechanisms Behind Temperature-Dependent Impedance Behavior in Polymer Electrolyte Fuel Cells at High Current Loads}},
url = {{http://dx.doi.org/10.1109/CEEGE62093.2024.10744120}},
doi = {{10.1109/CEEGE62093.2024.10744120}},
year = {{2024}},
}