Submillimeter resolved transient techniques for polymer electrolyte membrane fuel cell characterization: local in situ diagnostics for channel and land areas
作者： I.A. Schneider , M.H. Bayer , S. Von Dahlen
DOI: 10.1533/9780857095480.3.353
关键词:
摘要: Abstract: Key results of submillimeter resolved local in situ diagnostics channel and land areas polymer electrolyte fuel cells (PEFCs) are presented. Cyclic voltammetry (CV) electrochemical impedance spectroscopy (EIS) employed with resolution to demonstrate how lateral inhomogeneities affect the value electrochemically available surface area as obtained from CV experiments their contribution can lead misinterpretation EIS results. The correlation between liquid water accumulation cell performance is demonstrated by using simultaneous current density distribution measurement in-plane neutron radiography transient experiments. Finally, reverse phenomenon assessed during start-up shutdown a PEFC.
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