期刊
JOURNAL OF POWER SOURCES
卷 195, 期 15, 页码 4928-4934出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2009.12.061
关键词
Fuel cells; Diagnostic tools; Current mapping; OCV
A 10-cell Mk 9 stack was characterized using current/voltage mapping during automotive drive cycle testing. A minimally invasive current mapping technique was used to determine localized polarization curves which together with open circuit voltage (OCV) profile measurements provide useful information about crossover leak formation and location. Through a systematic variation of reactant gas pressures it is further possible to distinguish between electrical shorts, diffusive and convective leaks. (C) 2010 Published by Elsevier B.V.
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