Abstract
This works illustrates the capability of scanning Small-Angle X-ray Scattering (sSAXS) and Ptychographic X-ray nano Tomography (PXCT) to characterize nanoporous composite materials over multiple length scales on a fuel cell catalyst. Results comprise direct images of the nanostructure in a 30µm catalyst pillar at 20 nm resolution in combination with statistically averaged information of the nanostructure between 1-200nm from sSAXS with a spatial resolution of few tens of µm over macroscopic areas. The ex-situ material study is complemented by in-situ dynamic imaging of vapor condensation in 3D at 20nm spatial and temporal resolution of 10minutes.
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