Experimental investigation of pinhole effect on MEA/cell aging in PEMFC
作者： Bo Tao Huang , Yohann Chatillon , Caroline Bonnet , François Lapicque , Sébastien Leclerc
DOI: 10.1016/J.IJHYDENE.2012.09.058
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摘要: Abstract The effect of MEA pinhole size on the aging single (10 × 10 cm 2 ) PEMFC was investigated. Two MEAs were perforated by two pins different diameters (0.7 and 1.2 mm), in both cases H inlet zone. performance losses degradation rates components compared to those exhibited a healthy, not MEA. Perforation smaller pin did promote immediate cell voltage decay hydrogen crossover increased only slightly. larger resulted reduction one decade increase crossover. LSV CV voltammograms performed for determination electrode active surface changed abruptly perforation, which confirmed existence an internal short circuit within Besides, perforation affected time variations diffusion charge transfer resistances.
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