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Title: Analysis of alkaline exchange membrane fuel cells performance at different operating conditions using DC and AC methods

Abstract

We report membrane electrode assemblies (MEAs) for anion exchange membrane fuel cells (AEMFCs) were manufactured from commercial materials: Pt/C catalyst, A201 AEM and AS4 ionomer by using an industrial mass-production digital printing method. The MEA designs selected are close to those recommended by US Department of Energy, including low loading of platinum on the cathode side (0.2 mg cm-2). Polarization curves and electrochemical impedance spectroscopy (EIS) were applied for MEA evaluation in fuel cell conditions with variation of gas humidification and oxygen partial pressure (air vs oxygen). The typical impedance curves recorded at H2/O2 gas configuration consist of high- and medium-frequency arcs responsible for hydrogen oxidation and oxygen reduction, respectively. Operation with air as a cathode feed gas resulted in a decrease in AEMFC performance due to possible CO2 poisoning and mass transfer losses. At the same time, EIS demonstrated formation of a low frequency loop due to diffusion limitations. Despite the low loading of platinum on the cathode (0.2 mg cm-2), a peak power density of ~330 mW cm-2 was achieved (at 50/50% of RH on anode and cathode), which is substantially higher performance than for AEMFC MEAs tested at similar conditions.

Authors:
 [1];  [2];  [2]; ORCiD logo [3]
  1. University of Hawaii, Honolulu, HI (United States)
  2. EWII Fuel Cells, LLC., Albuquerque, NM (United States)
  3. Pajarito Powder, LLC, Albuquerque, NM (United States)
Publication Date:
Research Org.:
Univ. of New Mexico, Albuquerque, NM (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE); US Department of the Navy, Office of Naval Research (ONR)
OSTI Identifier:
1538529
Alternate Identifier(s):
OSTI ID: 1549026
Grant/Contract Number:  
EE0006962; N00014-12-1-0496
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Power Sources
Additional Journal Information:
Journal Volume: 375; Journal Issue: C; Journal ID: ISSN 0378-7753
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; alkaline exchange membrane fuel cell; AEMFC; pt catalyst; electrochemical impedance spectroscopy

Citation Formats

Reshetenko, Tatyana, Odgaard, Madeleine, Schlueter, Debbie, and Serov, Alexey. Analysis of alkaline exchange membrane fuel cells performance at different operating conditions using DC and AC methods. United States: N. p., 2017. Web. doi:10.1016/j.jpowsour.2017.11.030.
Reshetenko, Tatyana, Odgaard, Madeleine, Schlueter, Debbie, & Serov, Alexey. Analysis of alkaline exchange membrane fuel cells performance at different operating conditions using DC and AC methods. United States. https://doi.org/10.1016/j.jpowsour.2017.11.030
Reshetenko, Tatyana, Odgaard, Madeleine, Schlueter, Debbie, and Serov, Alexey. Mon . "Analysis of alkaline exchange membrane fuel cells performance at different operating conditions using DC and AC methods". United States. https://doi.org/10.1016/j.jpowsour.2017.11.030. https://www.osti.gov/servlets/purl/1538529.
@article{osti_1538529,
title = {Analysis of alkaline exchange membrane fuel cells performance at different operating conditions using DC and AC methods},
author = {Reshetenko, Tatyana and Odgaard, Madeleine and Schlueter, Debbie and Serov, Alexey},
abstractNote = {We report membrane electrode assemblies (MEAs) for anion exchange membrane fuel cells (AEMFCs) were manufactured from commercial materials: Pt/C catalyst, A201 AEM and AS4 ionomer by using an industrial mass-production digital printing method. The MEA designs selected are close to those recommended by US Department of Energy, including low loading of platinum on the cathode side (0.2 mg cm-2). Polarization curves and electrochemical impedance spectroscopy (EIS) were applied for MEA evaluation in fuel cell conditions with variation of gas humidification and oxygen partial pressure (air vs oxygen). The typical impedance curves recorded at H2/O2 gas configuration consist of high- and medium-frequency arcs responsible for hydrogen oxidation and oxygen reduction, respectively. Operation with air as a cathode feed gas resulted in a decrease in AEMFC performance due to possible CO2 poisoning and mass transfer losses. At the same time, EIS demonstrated formation of a low frequency loop due to diffusion limitations. Despite the low loading of platinum on the cathode (0.2 mg cm-2), a peak power density of ~330 mW cm-2 was achieved (at 50/50% of RH on anode and cathode), which is substantially higher performance than for AEMFC MEAs tested at similar conditions.},
doi = {10.1016/j.jpowsour.2017.11.030},
journal = {Journal of Power Sources},
number = C,
volume = 375,
place = {United States},
year = {Mon Nov 13 00:00:00 EST 2017},
month = {Mon Nov 13 00:00:00 EST 2017}
}

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Cited by: 18 works
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