Journal
JOURNAL OF POWER SOURCES
Volume 106, Issue 1-2, Pages 295-303Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S0378-7753(01)01032-1
Keywords
proton exchange membrane fuel cell (PEMFC); stack; lifetime analysis
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A counter-now type 40-cell proton exchange membrane fuel cell (PEMFC) stack with an effective electrode area of 200 cm 2 has been assembled and its performance was investigated. Under the condition of atmospheric pressure and 75 degreesC, the maximum power of the stack was 2.89 kW (0.36 W/cm(2) per cell) and 2.3 kW (0.29 W/cm(2) per cell) for H-2/O-2 and H-2/Air, respectively. However, the stack showed a rapid decay in performance after continuous operation of 1800 h. Electron probe micro analyzer (EPMA) and X-ray fluorescence (XRF) spectrometer analyses revealed that degradation of the catalyst and contamination of the polymer electrolyte membrane were the main causes of such sudden decay. (C) 2002 Elsevier Science B.V. All rights reserved.
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