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Title: Effect of Acetonitrile Contamination on Long-Term Degradation of Proton Exchange Membrane Fuel Cells

Abstract

A long-term contamination (for 1000 hrs) test is conducted under constant current operation with 5 ppm acetonitrile in the air stream, and the results are compared to those for a controlled blank single-cell test. The long-term effects of the contaminant on cell performance and the structure of the membrane electrodes assembly are identified by a series of analyses, including electrochemical impedance spectroscopy, cyclic voltammetry, ion chromatography, transmission electron microscopy and scanning electron microscopy. During the long-term test, the acetonitrile significantly decreases the cell performance for a 0.1-mg Pt cm-2 catalyst coated membrane. The acetonitrile contamination accelerates catalyst particle growth; however, interestingly, it inhibited membrane degradation. This result may provide a possible approach for improving fuel cell durability.

Authors:
ORCiD logo [1];  [2];  [1];  [1]
  1. Univ. of Hawaii - Manoa, Honolulu, HI (United States). Hawaii Natural Energy Inst.
  2. Univ. of Hawaii - Manoa, Honolulu, HI (United States). Hawaii Natural Energy Inst.; Chinese Academy of Sciences (CAS), Jilin (People's Republic of China). Changchun Inst. of Applied Chemistry
Publication Date:
Research Org.:
Univ. of Hawaii, Honolulu, HI (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
OSTI Identifier:
1509900
Grant/Contract Number:  
EE0000467
Resource Type:
Accepted Manuscript
Journal Name:
Journal of the Electrochemical Society
Additional Journal Information:
Journal Volume: 165; Journal Issue: 6; Journal ID: ISSN 0013-4651
Publisher:
The Electrochemical Society
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; Acetonitrile Contamination; MEA Degradation; PEMFCs

Citation Formats

Zhai, Yunfeng, Ge, Junjie, Qi, Jing, and St-Pierre, Jean. Effect of Acetonitrile Contamination on Long-Term Degradation of Proton Exchange Membrane Fuel Cells. United States: N. p., 2018. Web. doi:10.1149/2.0221806jes.
Zhai, Yunfeng, Ge, Junjie, Qi, Jing, & St-Pierre, Jean. Effect of Acetonitrile Contamination on Long-Term Degradation of Proton Exchange Membrane Fuel Cells. United States. doi:10.1149/2.0221806jes.
Zhai, Yunfeng, Ge, Junjie, Qi, Jing, and St-Pierre, Jean. Wed . "Effect of Acetonitrile Contamination on Long-Term Degradation of Proton Exchange Membrane Fuel Cells". United States. doi:10.1149/2.0221806jes. https://www.osti.gov/servlets/purl/1509900.
@article{osti_1509900,
title = {Effect of Acetonitrile Contamination on Long-Term Degradation of Proton Exchange Membrane Fuel Cells},
author = {Zhai, Yunfeng and Ge, Junjie and Qi, Jing and St-Pierre, Jean},
abstractNote = {A long-term contamination (for 1000 hrs) test is conducted under constant current operation with 5 ppm acetonitrile in the air stream, and the results are compared to those for a controlled blank single-cell test. The long-term effects of the contaminant on cell performance and the structure of the membrane electrodes assembly are identified by a series of analyses, including electrochemical impedance spectroscopy, cyclic voltammetry, ion chromatography, transmission electron microscopy and scanning electron microscopy. During the long-term test, the acetonitrile significantly decreases the cell performance for a 0.1-mg Pt cm-2 catalyst coated membrane. The acetonitrile contamination accelerates catalyst particle growth; however, interestingly, it inhibited membrane degradation. This result may provide a possible approach for improving fuel cell durability.},
doi = {10.1149/2.0221806jes},
journal = {Journal of the Electrochemical Society},
number = 6,
volume = 165,
place = {United States},
year = {2018},
month = {3}
}

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