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Degradation of catalyst electrochemical active surface is a major issue that hinders polymer electrolyte fuel cells commercialization. Several degradation mechanisms that have been reported in the literature are known to result in heterogeneity of ageing, whose effects on performance loss have not been previously investigated. In this work experimental and theoretical methodologies are combined to...
The study focuses of the electrochemical impedance spectroscopy (EIS) response of tethered bilayer membranes (tBLMs) populated with heterogeneously distributed defects (pores). Such defects are common and may form spontaneously, or they may be produced by pore-forming agents, proteins, protein toxins, and peptides. To model heterogeneity in the populations of defects we assumed a log- normal distribution...
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