The contamination mechanism and behavior of amide bond containing organic contaminant on PEMFC
Abstract
In this paper, a study is presented of the effects of an organic contaminant containing an amide bond (-CONH-), ε-caprolactam, on polymer electrolyte membrane fuel cells (PEMFCs). The ε-caprolactam has been detected in leachates from polyphthalamide materials that are being considered for use as balance-of-plant structural materials for PEMFCs. Contamination effects from ε-caprolactam in Nafion membranes are shown to be controlled by temperature. A possible explanation of the temperature effect is the endothermic ring-opening reaction of the amide bond (-NHCO-) of the cyclic ε-caprolactam. UV-vis and ATR-IR spectroscopy studies confirmed the presence of open ring structure of ε-caprolactam in membranes. The ECSA and kinetic current for the ORR of the Pt/C catalyst were also investigated and were observed to decrease upon contamination by the ε-caprolactam. By comparison of the CVs of ammonia and acetic acid, we confirmed the adsorption of carboxylic acid (-COOH) or carboxylate anion (-COO-) onto the surface of the Pt. In conclusion, a comparison of in situ voltage losses at 80°C and 50°C also revealed temperature effects, especially in the membrane, as a result of the dramatic increase in the HFR.
- Authors:
-
- Univ. of South Carolina, Columbia, SC (United States). Dept. of Chemical Engineering
- National Renewable Energy Lab. (NREL), Golden, CO (United States). Chemical and Materials Science Center
- Univ. of Alabama, Tuscaloosa, AL (United States). Dept. of Chemical and Biological Engineering
- Publication Date:
- Research Org.:
- National Renewable Energy Laboratory (NREL), Golden, CO (United States); Univ. of South Carolina, Columbia, SC (United States)
- Sponsoring Org.:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Sustainable Transportation Office. Hydrogen Fuel Cell Technologies Office
- OSTI Identifier:
- 1220615
- Report Number(s):
- NREL/JA-5900-62537
Journal ID: ISSN 0013-4651
- Grant/Contract Number:
- AC36-08GO28308; ZGB-0-99180-1
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of the Electrochemical Society
- Additional Journal Information:
- Journal Volume: 162; Journal Issue: 4; Related Information: Journal of the Electrochemical Society; Journal ID: ISSN 0013-4651
- Publisher:
- The Electrochemical Society
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 14 SOLAR ENERGY; 77 NANOSCIENCE AND NANOTECHNOLOGY; caprolactam; absorption; organic contaminant; amide bond
Citation Formats
Cho, Hyun -Seok, Das, Mayukhee, Wang, Heli, Dinh, Huyen N., and Van Zee, J. W. The contamination mechanism and behavior of amide bond containing organic contaminant on PEMFC. United States: N. p., 2015.
Web. doi:10.1149/2.0631504jes.
Cho, Hyun -Seok, Das, Mayukhee, Wang, Heli, Dinh, Huyen N., & Van Zee, J. W. The contamination mechanism and behavior of amide bond containing organic contaminant on PEMFC. United States. https://doi.org/10.1149/2.0631504jes
Cho, Hyun -Seok, Das, Mayukhee, Wang, Heli, Dinh, Huyen N., and Van Zee, J. W. Tue .
"The contamination mechanism and behavior of amide bond containing organic contaminant on PEMFC". United States. https://doi.org/10.1149/2.0631504jes. https://www.osti.gov/servlets/purl/1220615.
@article{osti_1220615,
title = {The contamination mechanism and behavior of amide bond containing organic contaminant on PEMFC},
author = {Cho, Hyun -Seok and Das, Mayukhee and Wang, Heli and Dinh, Huyen N. and Van Zee, J. W.},
abstractNote = {In this paper, a study is presented of the effects of an organic contaminant containing an amide bond (-CONH-), ε-caprolactam, on polymer electrolyte membrane fuel cells (PEMFCs). The ε-caprolactam has been detected in leachates from polyphthalamide materials that are being considered for use as balance-of-plant structural materials for PEMFCs. Contamination effects from ε-caprolactam in Nafion membranes are shown to be controlled by temperature. A possible explanation of the temperature effect is the endothermic ring-opening reaction of the amide bond (-NHCO-) of the cyclic ε-caprolactam. UV-vis and ATR-IR spectroscopy studies confirmed the presence of open ring structure of ε-caprolactam in membranes. The ECSA and kinetic current for the ORR of the Pt/C catalyst were also investigated and were observed to decrease upon contamination by the ε-caprolactam. By comparison of the CVs of ammonia and acetic acid, we confirmed the adsorption of carboxylic acid (-COOH) or carboxylate anion (-COO-) onto the surface of the Pt. In conclusion, a comparison of in situ voltage losses at 80°C and 50°C also revealed temperature effects, especially in the membrane, as a result of the dramatic increase in the HFR.},
doi = {10.1149/2.0631504jes},
journal = {Journal of the Electrochemical Society},
number = 4,
volume = 162,
place = {United States},
year = {Tue Feb 03 00:00:00 EST 2015},
month = {Tue Feb 03 00:00:00 EST 2015}
}
Web of Science
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