Browsing by Author "Bizzotto, Dan"

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  • X-ray transparent proton-exchange membrane fuel cell design for in situ wide and small angle scattering tomography
    (2019-10-15) Martens, I.; Vamvakeros, Antonis; Chattot, Raphael; Blanco, Maria V.; Rasola, M.; Pusa, J.; Jacques, Simon D.M.; Bizzotto, Dan; Wilkinson, David P.; Ruffmann, Bastian; Heidemann, Stefan; Honkimäki, V.; Drnec, J.
     A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
    We have constructed a 5 cm2 proton exchange membrane hydrogen fuel cell optimized for transparency of high energy X-rays. This cell allows for in situ elastic scattering measurements (WAXS, SAXS) during electrochemical operation with minimal trade-offs in cell performance vs benchtop designs, and is capable of reaching automotive current densities. A key feature is that the beam enters the cell at grazing incidence to the electrodes, massively increasing the effective pathlength and therefore the signal-to-background ratio. The 360∘ transparency in the plane of the sample permits imaging coupled with advanced techniques, such as X-ray diffraction computed tomography.