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Title: A rejuvenation process to enhance the durability of low Pt loaded polymer electrolyte membrane fuel cells

Abstract

Here, an effective method to enhance the durability of polymer electrolyte membrane fuel cells (PEMFCs) is reported. PEMFC performance loss is mitigated by exposing the electrodes of fuel cells to dry nitrogen gas periodically at high temperature. This method extends the lifetime of fuel cells significantly compared to their non-treated counterparts. The impact of treatment temperature and exposure time on PEMFC durability is reported, using potential cycling accelerated stress tests. The enhanced durability is attributed to the suppression of “ionomer relaxation” that occurs under the nearly water saturated operating conditions of a PEMFC cathode.

Authors:
 [1]; ORCiD logo [1];  [1];  [1];  [1]; ORCiD logo [2]; ORCiD logo [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. Korea Inst. of Energy Research (KIER), Daejeon (Korea, Republic of). Fuel Cell Lab.
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE). Fuel Cell Technologies Program (EE-3F); USDOE National Nuclear Security Administration (NNSA); National Research Foundation of Korea (NRF)
OSTI Identifier:
1473809
Alternate Identifier(s):
OSTI ID: 1582721
Report Number(s):
LA-UR-17-30764
Journal ID: ISSN 0378-7753
Grant/Contract Number:  
AC52-06NA25396; NRF-2015M1A2A2056550
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Power Sources
Additional Journal Information:
Journal Volume: 396; Journal Issue: C; Journal ID: ISSN 0378-7753
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
30 DIRECT ENERGY CONVERSION; 36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; Fuel cells; Durability; Ionomer; Rejuvenation; Voltage cycling

Citation Formats

Langlois, David A., Lee, Albert S., Macauley, Natalia, Maurya, Sandip, Hawley, Marilyn E., Yim, Sung Dae, and Kim, Yu Seung. A rejuvenation process to enhance the durability of low Pt loaded polymer electrolyte membrane fuel cells. United States: N. p., 2018. Web. doi:10.1016/j.jpowsour.2018.06.013.
Langlois, David A., Lee, Albert S., Macauley, Natalia, Maurya, Sandip, Hawley, Marilyn E., Yim, Sung Dae, & Kim, Yu Seung. A rejuvenation process to enhance the durability of low Pt loaded polymer electrolyte membrane fuel cells. United States. doi:10.1016/j.jpowsour.2018.06.013.
Langlois, David A., Lee, Albert S., Macauley, Natalia, Maurya, Sandip, Hawley, Marilyn E., Yim, Sung Dae, and Kim, Yu Seung. Fri . "A rejuvenation process to enhance the durability of low Pt loaded polymer electrolyte membrane fuel cells". United States. doi:10.1016/j.jpowsour.2018.06.013. https://www.osti.gov/servlets/purl/1473809.
@article{osti_1473809,
title = {A rejuvenation process to enhance the durability of low Pt loaded polymer electrolyte membrane fuel cells},
author = {Langlois, David A. and Lee, Albert S. and Macauley, Natalia and Maurya, Sandip and Hawley, Marilyn E. and Yim, Sung Dae and Kim, Yu Seung},
abstractNote = {Here, an effective method to enhance the durability of polymer electrolyte membrane fuel cells (PEMFCs) is reported. PEMFC performance loss is mitigated by exposing the electrodes of fuel cells to dry nitrogen gas periodically at high temperature. This method extends the lifetime of fuel cells significantly compared to their non-treated counterparts. The impact of treatment temperature and exposure time on PEMFC durability is reported, using potential cycling accelerated stress tests. The enhanced durability is attributed to the suppression of “ionomer relaxation” that occurs under the nearly water saturated operating conditions of a PEMFC cathode.},
doi = {10.1016/j.jpowsour.2018.06.013},
journal = {Journal of Power Sources},
number = C,
volume = 396,
place = {United States},
year = {2018},
month = {8}
}

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