Abstract
Recent work at PSI based on anisotropic resolution improvement allowed reaching a combination of 20 μm of effective spatial resolution with 10 s exposure times for neutron imaging. This new setup was applied to dynamic in plane imaging of PEFCs in different applications such as the characterization of bulk and interfacial water transport parameters of membranes using 1H-2H contrast imaging, the study of water/ice behavior during sub-zero startup, and the correlation between water accumulation and diffusive voltage loss by combining neutron imaging with transient Helox operation. Future studies will take advantage of a new setup allowing the simultaneous operation and neutron imaging of 6 small scale differential cells.
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