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

Journal Article · · Journal of the Electrochemical Society
DOI:https://doi.org/10.1149/2.0221806jes· OSTI ID:1509900
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

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.

Research Organization:
Univ. of Hawaii, Honolulu, HI (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
Grant/Contract Number:
EE0000467
OSTI ID:
1509900
Journal Information:
Journal of the Electrochemical Society, Vol. 165, Issue 6; ISSN 0013-4651
Publisher:
The Electrochemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 11 works
Citation information provided by
Web of Science

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