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X-ray transparent proton-exchange membrane fuel cell design for in situ wide and small angle scattering tomography

TitleX-ray transparent proton-exchange membrane fuel cell design for in situ wide and small angle scattering tomography
Publication TypeJournal Article
Year of Publication2019
AuthorsMartens, I, Vamvakeros, A, Chattot, R, Blanco, MV, Rasola, M, Pusa, J, Jacques, SDM, Bizzotto, D, Wilkinson, DP, Ruffmann, B, Heidemann, S, Honkimäki, V, Drnec, J
JournalJournal of Power Sources
Volume437
Pagination226906
Abstract

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 auto- motive 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∘ trans- parency in the plane of the sample permits imaging coupled with advanced techniques, such as X-ray diffraction computed tomography.

URLhttps://linkinghub.elsevier.com/retrieve/pii/S0378775319308997
DOI10.1016/j.jpowsour.2019.226906